RC India

I am starting this new thread to keep you all posted about my latest possession the HobbyKing 450MT (Align T-Rex 450 clone/replica )
I just got off hobbyking as I ordered my stuff, here is what all I have ordered

HK-450MT CCPM 3D Alloy Barebone Kit (Align T-Rex Comp.)
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=12390

TP 450-Size 2415-03T Brushless Heli Motor 4850kv
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6261

Hobbyking SS Series 50-60A ESC
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7339

Hobby King 401B AVCS Digital Head Lock Gyro
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10113

ZIPPY Flightmax 2200mAh 3S1P 20C
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6306

Turnigy Carbon Fiber Main Blade 325mm (1pair)
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=12900

Fiberglass Canopy for Trex-450
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10956

Pinions
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8574


Tools

Main Rotor Blade Assembly Tool (5mm)
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11041

R/C Helicopter Pitch Gauge
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9653

HK-171 Thread Locker & Sealant Medium Strength (Blue)
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11409


Apart from these I will be using my own HXT900 Servo, Spektrum AR6100 RX and Spektrum DX6i TX

Next step is to wait for those stuff to arrive, I will post my build pictures and the first flight video here and will try to keep this thread alive. Wish me luck :)

All the best for your build :)

Very interested in knowing the performance of the motors, it is 1000 more KV than the original Align ones !

4850 KV???? I read few reviews and people using 11 T ? What the heck? that would be super duper fast then, probably lower throttle curve then.

Yes, I read some reviews that it is more of a rocket than a heli... I got both 11 & 13 T so will do some experiments.. I have a stock 3850KV as well.. may be I will try that too. Waiting for stuff to arrive... which could be pain at times :(

Dont ever bother about the 13 T there  ;D

:) I am just learning and need help from all the veterans.. I wont be doing any 3D as of yet, playing with Simulator so far.

Buy yourself some good hex driver set first.

I have couple of them... but still please recommend if you have any good recommendation on the same.

hello to all

from where in india we can get good pair of Hex drivers.

nehal kapadia

I would not recommend anything other than the MIP Thorp 1.5 mm hex. But its expensive at 15 USD.

The problem I saw with align is that align is 1.5 mm and HK screws are 1/32 inch which is slightly larger than Align Hex. Hence the screws get stripped easily.

If u plan to stay longer in hobby MIP is a decent investment.

wait for others to reply.

German WIHA Hex Driver set available best price at TOWER******* -  Excellent quality - order for delivery by air mail - much cheaper than available from anywhere including Delhi & Bombay

Regards

please PM me with the web link or some store where I can get those.

Current status of shipment...


Date #   Location   Delivery Status
22-Oct-2010   Hong Kong   Item posted and is being processed.
22-Oct-2010   Hong Kong   Processed for departure.
22-Oct-2010   Hong Kong   The item left Hong Kong for its destination on 22-Oct-2010
23-Oct-2010   India   Arrived and is being processed.
23-Oct-2010   India   In transit.

Thanks findvikas for starting this thread. I am planning to buy the same Heli kit. Please keep updating regularly - it will help us all.  :thumbsup:

Would be grateful if the Senior Heli Flyers would spend some time going through the chart and advise us of the expected flight characteristics of both aircraft. They are largely similar with a few differences here and there. I feel both findvikas and I would benefit from your suggestions / advice.

Vikas, I hope this is OK with you, this is your thread, after all.

Thanks and Regards,

VC

Sure bud... but I could not see the text on the picture... better post some text with Hyperlinks or some high resolution picture.

I know what you mean. I've been trying to post an excel sheet as a jpg - it is not working out. Will try again later. The only diff is the motor and therefore the ESC, I am using a 30A ESC and an extra Tail Hold Servo, while your motor is more powerful and needs a 60A ESC. Other than that, we are on the same track.

All the best!

VC

Post the links directly VC, otherwise we need to individually type all those links just to find out what those products are.

And none of us needs a 60 amps ESC. even Align ship their products with 35 amps. You need 60 amps if you are flying like a Pro with 4S and a 3300+ HS. Else even for an extremely good heli, I dont see the need for a 40+ ESC, but a good one like plush is better.

I also remember reading that one of those scorpion motors needed a 60 amps ones, but those motors are expensive and our turnigys are equally good at 1/4 the price but are slightly inefficient.

again a begineer question, could there be a problem having 60a ESC on my setup I read somewhere in reviews that 60a is better so I got it and also 30-40a was in backorder. HK has very limited ESCs or they sell like hot cakes, either ways the are mostly sold out.

Hey hope yoou get it soon :)

bigger is better

but heavier on the downside.

Quote from: Bill on October 23, 2010, 05:10:07 PM
German WIHA Hex Driver set available best price at TOWER******* - 

What's up with the "TOWER*******" ? :headscratch:  If you mean TOWER HOBBIES, just say it so !!!!  You can speak your mind here ;)

hello

is this set up ok

model :- HK-450MT
Motor :- Turnigy Typhoon 450H 2215H Heli motor 3550k.
ESC    :- Turnigy Plush 40 amp.
Gyro   :- HK401B.
Tail servo :-  Turnigy MG90S.
Battery :- Turnigy 2200mAh 20C 3S1P.

if some thing is missing plz add it

thanks
nehal kapadia

Thanks... I think 4850kv should be able to accommodate extra weight

Quote from: vinay on October 24, 2010, 09:49:09 AM
bigger is better

but heavier on the downside.

Here is the link for the wiha hex driver set http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXKN80&P=ML

Regards

Quote from: Nehutech on October 24, 2010, 01:20:45 PM
Tail servo :-  Turnigy MG90S.

You need 3 more servos for the body. Use mg 14 or 933MG servos. For the tail better use a ds480. its expensive, but learning curve on a well behaved heli is always better. that mt kit does not come with blades or canopy. Buy some yellow looking canopy and some cheap white Fiber glass blades with good reviews.

From what I understand, a total of 4 servos are required in this Heli. A lot of people are using 3 standard 9 gram HXT 900 servos and one is a more advanced Tail hold servo. Is my understanding correct or am I way off?

hi vinay

sorry forget to mension it. i m planning to use D922MG. will it be ok?

any suggestion for this

Taking the liberty to comment on the above post, even though my opinion was not called for. D922MG seems good from what I read in the reviews. That is what I am going in for too.

suggestions r always welcome VC sir

sorry for not asking ur suggestion.. ;)

I am not sure if using Digital is going to make any big difference if I am not doing any 3D. I have 4 Spektrum DSP75.
As the name suggest they are 7.5 gms so not sure if they will fit in the body or not..

VC could you please send me a mail attachment of that list you've made?
I have almost the same things in my cart, but with a little extras of some electronics and a 5 blade main rotor..
and it comes to $210

This is how my list looks like. 8-)

Quote from: VC on October 24, 2010, 10:19:28 PM
From what I understand, a total of 4 servos are required in this Heli. A lot of people are using 3 standard 9 gram HXT 900 servos and one is a more advanced Tail hold servo. Is my understanding correct or am I way off?

Yes, a lot of people are using HXT900s.  The only thing to note is to get 1 or 2 extra, and also get a few sets of servo gears.  Crashes will take the gears out, so better to be prepared.  Vinay suggested metal gears ones to avoid this scenario, at a higher price point.

Quote from: VC on October 24, 2010, 12:43:25 AM
I know what you mean. I've been trying to post an excel sheet as a jpg - it is not working out. Will try again later.

We support PDF ;)  You can use one of the online converters from DOC to PDF or XLS to PDF.

If you have a snipping tool or a screen capture, you can just capture the image and it gets saved as a jpeg or a png!

Anwar Sahib - Thanks! Have plenty of HXT 900's in stock.
Dorwin - You seem to be way over the top - my set up works out to $95 + $24 postage = $ 119 = 
            Rs. 5500/- landed India. Trying to enclose my list here.
Nehutech - No issues, just trying to maintain protocol! ;D
Findvikas - I agree with you 100% - we are not trying any 3D here, let's just keep it simple. :thumbsup:

Quote from: controlflyer on October 24, 2010, 11:58:42 PM
If you have a snipping tool or a screen capture, you can just capture the image and it gets saved as a jpeg or a png!

The issue is the 800pixel size limit on images, so the contents are unreadable even at full size of the image.  PDF is definitely the sure shot solution.

If you must post JPG then upload to tinypic or some other image hosting server and post the link... you can post anysize then :). I prefer plain text which will have working links as well..

Oye you guys - you mind telling me if you can see the JPG that I posted? This is beginning to sound like a graphics designing workshop! ;D

:) I can

yup! its visible!!!

None of us are experienced Heli flyers and neither are we interested in 3D to start off with. I suggest we keep the pricing down to the lowest possible. In fact, I am thinking of downgrading to a Fibreglass set of main rotors instead of the CF set. What do you gentlemen feel about this? Shall we take the plunge?

I myself ordered both, start with fiberglass but if needed I dont want to pay shipping cost again just for blades. Also, I ordered tons of HXT900 instead of going after metal gear servos... the reason is they are cheap and "anyways" I am going to crash it... :)

Guys, At the beginning Even I thought I wanted to build a cheapest heli first and decided on the HXT 900. Just after the first crash I realized that changing servo and gears took more time than the metal gear servos worth.

Also if you bump the heli hard to the ground, there are chances that the plastic gears may strip and crash the heli. I had similar times twice where at the end of the loop the heli bounced off from the ground breaking the landing gear but I believe If I HAD used the plastic gears they would have stripped off and the whole heli would have crashed.

Also when ordering servos order atleast 4 to 5 since all servos may not move at the same speed as they are cheap. If a servo is moving more then it can be corrected by the radio, but one of the servo is moving faster than it cannot be corrected by the radio. I had this problem with MG 14s.

MG922 is the best buy for the price. Here is a good config.

1)MG922 X 4 (1 as spare). - MG933 is suggested, but they are little slow. Here again, MG 14s are cheaper and MORE sturdier, but you need to buy more as the speeds may vary between them. - I would have brought 5 X mg14.
2)HK401 - If it dosent hold the tail, do the sponge mod. - http://www.rcindia.org/helis/hobby-king-401b-sponge-mod/
3)DS480 tail servo. - I would never compromise here!
4)2215H for learning to hover - the most efficient motor on HK
5)Plush 40A. Even the Tower pro 40 (purple colour is good enough.)
6)11T pinion.
7)A good training gear.
8)Motor does not come with mounting screws. - http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idproduct=8714
9)Gyro foam. - http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idproduct=8999

Make sure your radios support 120 degree CCPM.

You can see a lot of info here! - http://www.rcindia.org/helis/hk-450-mt-build-thread/

~Vinay.

For Training gear - I would suggest u guys use - http://cgi.ebay.com/Alum-Hub-450-Series-Heli-3D-Big-Training-kit-Silver-/170489786635?pt=Radio_Control_Parts_Accessories&hash=item27b1fbb10b

Check out how the heli crashes with the plastic hub in the fourth video. http://www.rcindia.org/helis/hk-450-mt-build-thread/msg13420/#msg13420

Thats Y i suggest the above hub and metal gear servos.

I Strongly suggest you go through 4 pages of that thread. It answers 100 percent of your questions for sure! And dont forget finless bob videos.

Thanks Vinay... I already ordered this guy :)
http://cgi.ebay.com/3D-Big-Training-kit-Alum-Metal-Center-450-Heli-/180555273285?pt=Radio_Control_Parts_Accessories&hash=item2a09eed445

We think alike , I guess :) The link you gave me was only for center piece while this link is for entire kit.. for few bucks extra..

Quote from: VC on October 25, 2010, 12:07:50 AM
Anwar Sahib - Thanks! Have plenty of HXT 900's in stock.
Dorwin - You seem to be way over the top - my set up works out to $95 + $24 postage = $ 119 = 
            Rs. 5500/- landed India. Trying to enclose my list here.
Nehutech - No issues, just trying to maintain protocol! ;D
Findvikas - I agree with you 100% - we are not trying any 3D here, let's just keep it simple. :thumbsup:

VC if you see my thread on HK450 V2 http://www.rcindia.org/helis/hk-450-v2-plastic-build-thread/,

I faced several issues. I already had building experience and tons of spares hence I got it resolved. You may be lucky and all may work out like the other reviewers.

Also the Head of the V2 broke out on the first Crash! My MT took 3 crashes before I discarded it.

I suggest you go with MT and have a trouble free experience for the first time build. coz for the first time builders, building a trouble free kit itself is already a pain ;)

thank God i ordered the MT ver.

thanks Vinay for help in finding right version.

Its all luck/ Building experience. I was not able to build the stock V2, but Anwar's Brother could do it w/o a single add on.  ;)

True ;) with the following caveats...

1.  He does not fly hard at all.

2.  Some thing still needed replacement/fixing (tail servo holder, tail belt pulley etc).

Which rating esc u ppl prefer for this?

Typically, around 40A would be good.  A bit higher is OK. 

In terms of minimum that can be used, take a look at the peak load of the motor, and add about 20%.

Status Update: No Update

Status still shows as in transit on HK Postal Website. No letter from customs office as well, so giving it the benefit of doubt and will wait until Monday to see if anything comes or I will walk into Bangalore GPO. Since I had an experience earlier, it should not be that tough :)

Just to share last experience, it was back in 2007 when I ordered 12 pieces of Bluetooth Stereo Headphones (Jabra BT620s) and the package cost was over INR 28,000. The seller was not stupid but I was.. he pasted an invoice on the package and I got the letter from Bangalore GPO :). First experience and I got it out with the help of Gandhi Ji + some tax (whatever was applicable). Still they were way too cheap than what I was getting in India and hey I kept just 2 and sold the rest with margin over my cost for per piece :)

Awright.. got some more information. They got a new system to track EMS Speed Post Items.. and it was quick to enter India through Mumbai and then also very quick in departing from Mumbai to Bangalore... but looks like Bangalore folks did not bother to update the site and I must visit GPO to cross verify.


(http://i54.tinypic.com/28cm0kg.png)

Have patience man, wait for a week, it will get updated, dont get urself into hassle by visiting the Post office. From what I am seeing since a month is that they are updating the web tracking as promptly as possible.

Got an update for you all... checked with Bangalore Customs office and its lying with them. I will try to visit in the evening and get it released. Wish me luck :)

Hey all the best. :)

It went smooth so far, I reached at 5:39pm and as expected the officer had left already. I gave all the documents required, they should release it tomorrow if the officer does not have any objection or they should call me. So I am expecting I should get it to my local post office somewhere by next week.

Cool :) What documents did you furnish?

Good news... It has cleared the customs today at 11:33am IST :)


11/1/2010 11:33:00 AM    INDIA    BANGALORE SUB FGN POST    Send item to domestic location (Inb)

I checked with local post office but it has not arrived/processed yet. They say by tomorrow I should receive it.

@Rajath... no much documents, the parcel has value declared of $38 so they need to see a proof that it is really $38 worth. I gave them invoice and declared that it is a gift item.

Here is a quick update that I am sure you all have been waiting for including me :)
I got the package with me and except little dent on canopy all looks intact and in perfect condition.

I ordered it on 22nd October, and it shipped the very same day.. reached Bangalore on 23-24th Oct. and I walk into Customs office on last Friday (29th Oct.) and I have it in my hand today on 2nd Nov. Total 7 working days and I got it :) :) Super excited about it.

Pics to follow soon

Here are the pics

some more

Awesome! let me know when i can come and have a look. Why are the pics not visible???

the space is just reserved... I am uploading the pics to my server as they are 1mb+ in size. I haven't slept since I came from office in the morning and had been running around to get it in my hands... I will catch some sleep after uploading the pics and then maybe if I wake up on time then you can come in the evening or tomorrow noon.. :)

Ya sure. Just let me know :) Hey why dont you resize and post it here itself? 20 pics will take 2mb and itl be convenient for viewers and yourself (less uploading).

I prefer viewers to see high resolution image... I set the thumbnail to 800x600 size so should be easy on them as well...

I ordered some extra stuff to save the cost of shipping... like extra blades... extra gyro for my plane project... medium strength thread lock, multi utility tool.. turn out to be very good and heavy in weight. ESC is big as well... gonna be fun. :)

Congrats and all the best Vikas! Keeping my fingers crossed. Hope my deal goes off as smooth. Paid last night.

Wish you luck bro :)

You must be super excited to stand on the bed and take snaps for us :D  Enjoy the build :thumbsup: Lucky you - nice space to test fly her right next to your house!

Quote from: rajathv8 on November 02, 2010, 12:16:24 PM
Ya sure. Just let me know :) Hey why dont you resize and post it here itself? 20 pics will take 2mb and itl be convenient for viewers and yourself (less uploading).

Actually this method makes this thread unusable to many.  It takes a while to load even on my high speed connection. The net effect is that your efforts will end up backfiring.  800x600 is more than enough for depict any amount of detail.  And this method of embedding causes all images to be loaded in full initially itself, unlike the other one where the user gets to expand pictures that are of interest to them.

The second aspect is that there are too many pictures that are just too similar to one another, which adds no value to the thread.  Combined with the size, I have to say this is a bad idea. 

First time excitement leads to such detailed posts, but they tend to work the other way around :) I would suggest that the number of images be cut down, and the sizes adjusted for broader viewership !

Only 1 battery? And CF blades for a first timer?  ???

BTW All the best for your builds.  :thumbsup: Nice canopy there.

After seeing 500, I am loosing interest in 450s.

Thanks... CF blades were just extra piece... I have regular blades to begin with and CF I ordered to save some shipping.

@Anwar.. I will fix my excitement :)

O boy... just realized that the ESC I ordered is without UBEC :( How sad.. now I will need another power source to power up my receiver??? Please advice

u can use 4 aa sized batteries, but that will become heavy for a heli that size.

Can I purchase a UBEC seperately? Any recommendations?

How about this one?
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=3735


Also if I plan to use this one, how the setup will look like?
Lipo => UBEC => RX
then what goes in ESC ? Do I really need two Lipos or can a single one be used?

I think there is a turnigy ones for 4 or 5 usd. Dont worry abt the connections for now. You can order a UBEC or another ESC with U BEC altogether.

YES - > Lipo to UBEC to RX. the same lipo used to power motor can be used.

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10312

for few more dollars u can buy a tower pro ESC itself.

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9299

Isn't that SBEC or am I missing something?

EDIT: Ok.. you updated it, I think I am too quick and this is no IM :)

SBEC is better than linear UBEC.

ok so should it be good with my 4850kv motor?

Check PM and call.

Quote from: findvikas on November 03, 2010, 07:08:55 AM
ok so should it be good with my 4850kv motor?

SBEC/LBEC has Nothing to do with the motor. it just powers up the RX and servos.

Plush link u asked for:

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2165

Its on back order. Cant say for sure when it will be back.  ;D

I guess I found an easy and cheap solution..

I have this 2cell 500mah 7.4v lipo which I am not really using for any good.
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9187

I verified that spectrum RX worked in the range of 3.5v-9v so I could directly plug in this lipo to power up my AR6110E. The weight compromise is just 33gm.. should not be any problem. right???

Awright... I just tested the power of this motor... and I did not dare to test it for long as the sound (noise??) scared me :)

Here is a quick video of me testing the power of this motor, equipments used
DX6i, AR6110E, HK 50-60A ESC, Zippy 2200mAh 3cell for ESC, Turnigy 500mAh 2cell for RX, Stick mount, pliers and my scared hands :)


http://www.youtube.com/watch?v=43RRovaYH_I


PS.: Notice how the nuts unscrewed from the stick mount as the motor rev up to full power

Quote from: findvikas on November 03, 2010, 10:15:13 AM
I verified that spectrum RX worked in the range of 3.5v-9v so I could directly plug in this lipo to power up my AR6110E. The weight compromise is just 33gm.. should not be any problem. right???

Ur RX will work, but servo/gyros may go up in smoke. Weight of 33 gm is not a problem though.

ahh.. yeah.. the servos... lol... how I missed that :)

which tail servo is good for this?? looking for tat hk's link..thanks

Quote from: vinay on October 22, 2010, 10:59:50 PM
Buy yourself some good hex driver set first.

Since I could not use any of the three hex drivers that I have for all the screws. The same driver fits in couple of screws while slip in others... I could blame it on screws as well and also on drivers.. what I feel that they are not accurate 1.5 screws.. I had a 1.3 driver too.. which works in couple of them. To test it I used 1.5 driver that came with my spektrum radio and it too slipped from couple of them.

hmmm... so where to get the driver which is guaranteed to be 99.9% accurate atleast. I chosen no other but Alien
Just ordered this set of 1.5, 2, 2.5, 3 hex screw driver
http://www.align-trex.com/hexagon-screw-driver-hz024-p-2936.html

What I also observed that HK450MT has cheap plastic motor holder and the screw can widen the plastic if I screw it hard enough, dont want to take any chance when it comes to motor. So I decided to get a Trex 450 SE v2 motor mount as well from Alien. Total order comes around 2k including shipping. Now the wait starts. :-(

Waiting for 15 days is a long period just to get the hex driver... :( does anyone has a quality hex driver in Bangalore that I can beg/borrow for couple of days?

Align will strip! They will strip the screws as well as strip them selves!  :P

Each strip costs you 250 Rs. Thats quite a lot of money! They wont work because Align is 1.5 mm and Hk is 1/32 inch or something like that. If you read back a couple of pages of this same thread , I had clearly mentioned this!

Ask me how I lost 500 Rs. I will tell you a whole different story.

The plastic Motor mount was good enough, but if you feel metal is the way to go then you will find upgrading many parts soon  :giggle:

The perfect hex driver is mip thorp, you will find the link a couple of pages back. however I have ordered 1.5 mm Heli direct built hex driver. Wanna check if they work well or not.

Dont know If anyone will lend you a 1.5mm Hex for an entire build here in bangalore. Cause they are so precious!  ;)

Quote from: vinay on November 09, 2010, 01:15:15 PM
Align will strip! They will strip the screws as well as strip them selves!  :P

Not my experience at all on Align helis using the Align hex drivers. I still use the Align hex set I procured more than  years ago.  So does others who have it. 

Now it is a different story if the screws are of a different size/quality.  That said... I did build my HK bird with them, and I help others at the field with the same set !

I wonder if it is an issue of not stopping at the right tension on the screws :headscratch:

I just got back from my local hardware shop and did not forgot to take my heli body... he was trying to sell me the same screw driver set that I had for 100 bucks while I needed only H1.5 bit.. uhmmm actually H1.5 bit fit nice and snug in all the screws of the body, ofcourse except those who are H2.0.. so I tried to bargain.. I need only single bit.

After he showed up interest in the Heli itself, he got back and bring a broken screw driver kit of same brand and asked me to see if it has that bit. There was one H1.5 bit lying with him.. I took that for just 10 bucks , yeah little costly when compared to 100 for 32 bit set... but I needed only single bit and that too fit nicely in all screws.

The problem with cheap drivers is that their tip gets the damage if the screw is tighten up.. they just strip. Another idea to fix them is, just cut the stripped tip off using a nice sharp metal cutting blade. Yeah I need to pay close attention to use those and make sure dont tight too much. I am just trying to put the pieces together for now and waiting for the driver to come to see if that works.

With the given fact that China made H1.5 is working fine, Alien should work too ... lets hope for the best :)

The plastic thing didn't look quiet good to me.. seriously. yeah sure I just want to try a driver to make sure I can buy that. Alien driver is going to be a good investment in long term for my hobby I guess. :)

Quote from: vinay on November 09, 2010, 01:15:15 PM
The plastic Motor mount was good enough, but if you feel metal is the way to go then you will find upgrading many parts soon  :giggle:

The perfect hex driver is mip thorp, you will find the link a couple of pages back. however I have ordered 1.5 mm Heli direct built hex driver. Wanna check if they work well or not.

Couple more things...

1.  I do have a US hex set, that people borrow from me time to time to handle odd sockets.  But I did not have to use it on my HK450 TT Pro.

http://hand-tools.hardwarestore.com/22-413-allen-wrench-sets-folding/gorilla-grip-hex-key-set-255471.aspx

2.  For a simple hex set, this one has everything you need for around Rs.100.   I saw another version of the same set (flat packing) at Ashta's house also :)

http://www.rcindia.org/tools-materials-and-building-techniques/allen-keys/msg30613/#msg30613

This is commonly available in India... and I see the same in department stores in Qatar too ! In fact, this is all I needed while I was in India, while fixing Trex 450s, 500s and 600s !  Only the 250 required special drivers, but they are supplied in the kit !

Jackly... yeah I have 3 of such sets comes in different packing and size... but I hate it for the same reason.. cheap metal. He tried to sell me the same for 100 buck. Never tried the Gorilla.

You can hate for any reason :giggle:  Question is... does it serve the purpose ?

for just couple of time.. they slip when opening thread locked screws :(

Hmm, I must have gotten lucky... doing the same things ! 

One thing to remember is that a tiny bit of loctite is what should hold the screws in place, not the pressure of your arm ;)

:) yep... I am using the medium strength blue loctite , what do you or others use?

This is what I have got so far...

Quote from: findvikas on November 09, 2010, 02:01:48 PM
:) yep... I am using the medium strength blue loctite , what do you or others use?

That is the right loctite. The trick is to use bare minimum on the last 2 or 3 threads, and never to over-tighten the screws.

Thanks Anwar and others trying to help this novice..

Anwar, I learnt it the hard way, some screw requires a little more loctite, head screws/tail boom screw, main gear jesus bolt etc, which cant be heated with plastic parts nearby.

Align driver worked well on the first go, but on the same HK screws 2nd or the 3rd time they stripped, due to size issue. No wonder why people complain about HK screw quality. coz most use align hex driver. On the other hand MIP thorp fits perfectly on HK screws and they work well on the same screws 3 to 4 times w/o issues. I will post the difference in the head pics once I reach bangalore.

BTW I maidened my 2 birds, one with HK401 and another with gy401(my first original gyro). What a difference. the GY was plug and fly. Just wondering how the quark mks8901 combo would be on the TT 450.  :o

BTW I have jackly and its PURE CRAP! Butter is stronger  ;D

Hey BTW from the pics, the flybar weights should be on the edge(near the paddles) for beginners. Its stable there.

Yep... that was not tight then... I moved it next to paddles... sharp eyes I must say.. thanks :)

Quote from: vinay on November 09, 2010, 03:23:30 PM
BTW I have jackly and its PURE CRAP! Butter is stronger  ;D

:giggle:  Of course you get what you pay for (:Rs: 100). But I also hope you are building RC helis, not all terrain vehicles ;)

So a quick fix for Jackly drivers... their metal is too soft that you can re-use its Hex bits atleast.
Take a metal file , one like this (http://cdn.sella.co.nz/images/thumb/6/w/r/4mp6wr-640x500.jpg) and keep filing it till the damaged part gets off... it was around 2 mins for me and I managed to fix all the damaged bits of Jackly. How kind they were to make it so soft :p

Quote from: findvikas on November 08, 2010, 07:49:46 AM
So I decided to get a Trex 450 SE v2 motor mount as well from Alien. Total order comes around 2k including shipping. Now the wait starts. :-(

This was quick, relatively, and I had the postman at my doorstep in the morning with the package. First impression... sweet... very sweet. These are made in Taiwan and not china... fits on most of the screws fine the remaining very few seem to be wrong sized screws. Also the motor mount looks like made of alloy.. very lightweight and stiff. loved it.

I finished the build by setting up all screws with thread lock, installed 4 servos , gyro and motor... now I may need some help in setting up configuration of servos...

@Vinay... will you be able to spare some time to have a look at it and help me in finishing the build. Thanks.

I even unscrew all the screws from rotor head (one by one) and put them back in place with thread lock (one by one). The Align Hex driver working perfect.. no slipage yet... entire build is completed (well almost entire)

have u seen finless bob videos? If not I suggest u watch them here http://www.helifreak.com/showthread.php?t=11373, BEAUTIFUL! they teach it better than I have tried to.  :giggle:

U can also give me a call.. I may be going out this evening with friends. Thread locking is the easiest part. U should always thread lock all the screws in the body after programming the head. If servos move at different speed its a nightmare to change.

Thanks for the links Vinay... they are all awesome...

Here is how it looks now and the transition.. :)

http://www.youtube.com/watch?v=-bJt04r6bjg

I dont know how HXT 900 holds for the tail. People have found hxt 500 to be better than hxt 900 for the tail. This should be only for simple hovering.

I was planning a better servo for tail as well... just put it as I didnt had any other and was doing only testing. should I go for metal gear digital servo in back?

In the descending order of betterness:

MKS 8910 - wont work with HK gyro. need assan converter or a better gyro.
Futaba S9257
Align DS520
Turnigy DS480- recommended.
Henge 922

Cant find a Turnigy DS420... is that Align DS420 cause I can find that :) Please see if you can find a link over HK or some other place to buy. Should I also change the swashplate servos too ?

sorry its ds480. Updated the above post.

thanks... I will have to wait for next month's salary for the budget for new servos... darn it.. same story with salaried class people :(

Atleast we know that we WILL get it at the end of the month  ;)

is that T-rex 450SE building same for the Hk450 too?? I can see only one set of building videos from RWMAA,anymore is available?

pls check on helifreak for bob finless videoa.. or jsut google .. bob finless videos for trex 450 build on helifreak

Quote from: vinay on November 21, 2010, 12:25:29 PM
have u seen finless bob videos? If not I suggest u watch them here http://www.helifreak.com/showthread.php?t=11373

Direct link to the videos

Can i use

HobbyKing 939MG Metal Gear Servo 2.5kg/ 12.5g/ 0.14sec
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idproduct=14458
or
HobbyKing 929MG Metal Gear Servo 2.2kg/ 12.5g/ 0.10sec
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idproduct=11856

for my HK450 gt(all four servos)?
what is the difference between hk450 gt & hk450 mt?

MT is metal body and GT is carbon fibre

So carbon fiber is light & strong rgt? what would you suggest?

Answer to usage of the servos please.

Here is a very detailed comparison of both... choose wisely, just few dollars difference

Part 1

http://www.youtube.com/watch?v=qWOT10VzzYg

Part 2

http://www.youtube.com/watch?v=9le8LjSznQM&feature=related

This might be a silly question but just wanna know.
Can i replace the hex screws in the HK450 heli's to normal screws which i can find in hardware shops or electrical shops.

Sure, if the screw size is same why not?

Have somebody tried replacing the hex screws with screws locally available?
I tried a cheap hex screw driver on the screws in hk450 & stripped one  :(  :banghead:.
It would be great if the hex screws can be replaced with ordinary screws of same size(length can be reduced to necessary, best is to find bigger screws & reduce it to necessary sizes).

Some spare screws should be in the kit, have you checked ?  Not too sure about HK ones.

OK Guys here is a comparison. I was recently unscrewing the screw of the tail blade holder on my 500. It was 1.5 mm hex. The screw also had grip on the outer edge so that I could unscrew it using a cutting plier as well.

The screw was tight and hence I did not want to strip my hex driver. Instead I tried using the cutting plier with FULL FORCE and I was not able to unscrew it. So I heated the screw a lot and then tried the cutting plier with full force and the screw didnt even budge.  :P So i decided I will use my hex driver, this time the screw came out like a butter.

Moral of the story. Hex makes life easier. They didnt simply choose hex over philip or flat screw. Hex eases the unscrewing especially on a application like a heli.

U should be fine using local screw. But going with a good hex driver solves most of the issues, especially if u guys plan to stay long with HK helis.. I learnt it the hard way.

I am very confused and fighting with two questions in my mind.

- Do I really like flying Heli as much as I thought?
- Should I really fly a big 3D Heli?

I am unable to get a clear answer and that is why I have kept the build idle for some time, while its almost complete and just configuring Radio & electronics tweaking is pending. I need to have a clear answer before I decide anything.

Just a heads up, If I decide to not fly big 3D helis (at least at this time), I will be looking for buyers for the entire kit. Please suggest :(

Its Not like its gona deprciate or anything and not like you are going to have a shortage of buyers. Hey keep it aside for now untill you answer those questions - cos only you can answer them.  Hope you will see the light soon :D Take a chill pill and have some pizza :)

AFAIK, I hated helis. I was a plane guy  ;) I loved them. Until I realized that it was tough to carry it around on my bike.

Thought I will get a heli and practice it till I get a car. Initially it was tough! I felt like I will never learn hovering. I had 100s of hrs of sim, still I felt it was tough. But I had nothing else to fly! So I had to continue with my 450 - FORCEFULLY! My 3rd flight was my major crash. YOu can see the video on my 450 build thread.

I had to replace most of the parts. PAINFUL! Not money wise but work wise.

After learning how to fly and realizing the 3D potential of an heli and seeing lot of 3D videos and knowing that I am standing out of the Easy flying plane group gave me a lot of interest!

Today I dont even feel like flying planes! If i buy planes in the future it would be an yak or an extra,  a bipe and a fast moving EDF. Just 3.

TOday I already have 4 helis with me.  :giggle:

IF u are planning to sell the kit at a fair price, let me know rc crazy doc was interested.

Thanks Vinay, I will take some time before taking any action. And try to create my interest in it... the problem in SIM is that if it goes little far its almost invisible does that happen in real too? I mean I cannot make out where its heading, what orientation.

That is true for any sized model, that they get small and cause disorientation as they fly far, both on the sim, and in real life.  For helis like the 450 (which are small, NOT BIG!), you fly them not too far from you.  There are some tricks to improve the visibility (like painting the canopy with fluorescent orange paint with a black windshield, which is the best combination I have seen yet).

Believe me the visibility is worse in real life, coz on the sim the camera zooms as the heli goes far, but in real life there is no zooming  >:D

The zoom is something you control from the sim settings, and I keep it turned off !

I have a small 22" LCD so I need the zoom.  ;) If i had a 30+ incher then I would have gone for zoom switched off.

Trust me even on my 40" it gets invisible :) while the screen size is increasing the resolution also increases. I play the AeroFly on true HD (1080p).. really amazing :)

I am setting up my Dx6i with the heli... does anyone has Dx6i with 3 servo Swash Plate heli similar to trex 450 and mind sharing his settings with me ?

The settings cannot be copied verbatim from one heli to another.  Some of it can be reused, but not everything.

This video should cover your needs quite a bit.

http://www.youtube.com/watch?v=hhF8ikWNJZ4

Thanks Anwar... I looked at this video and this guy is using DX6 and NOT DX6i so its little different but yeah gave me much of the information that I had looking for. And then I cross verified with Bob Finless's CCPM config video... so far looks good... but maybe another 400-500 hours of Sim practice before I have enough guts to take it out in open :)

400 to 500 Hrs?  :headscratch: Then u will be taking it out next year.  ;D

What I suggest is that you should be able to do a FFF and be able to get the heli back and land it in front of you. THat is the time to take it out. The reason Iam telling u this is coz when I tried my heli I gave a little more throttle and the heli took off and went like a 100 feet away from me. Lucky for me rajesh was there   ;D

And I have decided to sell it for now... I might get into helis once I get bored from planes... but for now.. I am giving it away.

http://www.rcindia.org/for-sale/for-sale-hk-450mt-3d-helicopter-%28t-rex-450-clone%29/new/#new

Wanted to see that thing fly. :(

for findvikas pm sent

Hi friends,Where can I find the screws for mounting my turnigy typhoon 450 size motor? Wats the specification for tat screws?

I believe u can use the screws that are used to mount CDROM or HARD disk (both are slightly different size) so try both. one of them is a perfect fit from what i have read.

how much custom did you paid??