Avispad Build Log (Without Dihedral)

Started by vishalrao, August 17, 2012, 05:53:24 PM

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vishalrao

 ;D Really missed seeing that. Too bad, my landing gear has to be rebuilt. I think having that horizontal strut is not a good idea. Even short pebbles can damage the gear. Had no option as couldn't get m2 bolts here.

girishsarwal

Hmmm, will moving the strut a little up help?, or perhaps having a cross bar design; might add a little to the clearance...just an idea...
gs

vishalrao

The strut serves dual purpose. For the wheels to rest on it and support. So moving up will not help.

samlikespad

 {:)} nice flying vishal  :thumbsup: good job! Whats next ?  ;)

vishalrao

Thank you Sameer!

Haven't really thought about next. I'm yet to absorb the fact that I could build a plane that can fly as well as shop RTFs! Just want to enjoy flying this till I get bored  ;D

VC

Bravo! The background chatter makes gives it a realism that is adorable.
Growing old is mandatory, growing up is optional!

hyd_quads

I'm thrilled at every plane's FFF, which quads don't have... cool videos!!! :)

VinayakR

Hey Vishal,

Congrats man , very nice and clean build, and good flying too  {:)}

QuoteShot by my technically challenged wife
Hope your wifee havn't read this post  :giggle:

-Vinayak

girishsarwal

...a cross member construction might help...

Totally agree on the gravel spoiling the landing gear. I've been toying around with the idea of having a portable runway, something I can roll off like a carpet and take along to the field :D
gs

kamaraj74

Very very nice build sir and she is flying very well without dihedral what is the auw  :hatsoff: :hatsoff: :hatsoff:

vishalrao

Quote from: VC on August 20, 2012, 12:11:43 PM
Bravo! The background chatter makes gives it a realism that is adorable.

Thank you VC sir! Yes, the chatter really spices up the video.

Regarding amps draw, for 9x6 prop it was around 22 amps. I checked with 10x7 prop as I didn't have 10x5 and it was still within 28amps. Finally flew with 9x6. Appeared to be very efficient. I think we flew for 10 mins (3/4th throttle. Not very sure but it was not more than 3/4th) and it had drawn about 700 amps.

Quote from: hyd_quads on August 20, 2012, 12:25:27 PM
I'm thrilled at every plane's FFF, which quads don't have... cool videos!!! :)

What is FFF?

Quote from: VinayakR on August 20, 2012, 12:38:33 PM
Hope your wifee havn't read this post  :giggle:

-Vinayak

Thank you Vinayak! She definitely wouldn't mind. She is proud to be technically challenged :)  And I don't mind either! Like we (most of us) are culinarily challenged. It's good to maintain your individuality, else life would be boring if all were of same IQ/interests :)

Quote from: girishsarwal on August 20, 2012, 01:30:09 PM
...a cross member construction might help...

Thank you Girish! I doubt whether it would be easy to achieve. I think the original BEX's idea of landing gear for the Avispad might serve well. The only think I hate is pushing the landing wire inside the fuse sidewalls. I have got an idea now, will see how it works out.

Quote from: kamaraj74 on August 20, 2012, 02:04:28 PM
Very very nice build sir and she is flying very well without dihedral what is the auw  :hatsoff: :hatsoff: :hatsoff:

Thank you Kamaraj! Please don't address me as sir :bow: The AUW is around 970gms.

hyd_quads

FFF = fast forward flight (I know the term is generally used for helis..)

I'd love to build a plane one day, as fine as yours.  ;D

umeshk

Wow great build and flight... Can you please tell me what stabelisation gadget are you using.. I am looking for something similar for my scratch built .. Thanks

vishalrao

FY 30A. Please check the first post Umesh. Actually I have not used the stabilization for most of the flight in the videos. The plane is very stable without the stabilization system itself.

kamaraj74

here is the picture

vishalrao

Nice build Kamaraj! Is the landing gear scratch built?

kamaraj74

hai vishal,
iam using 3mm aluminium strip, let me know any other option,

auw is 1200 grams
suggest me motor,battery,esc and prop

Mjet

Hi All,

My previous landing gear was made from GI wires and as forecasted in forum, that was band during landing :banghead:.

For experiment, I have made landing gear from Iron Rods used to support cycle fenders ( 2.5 mm and 4 mm Rods).Specs are same for both design except thickness of rod.

A Nut / Bolt arrangement is provided on TOP ( Gas welding)  , which will be  fitted on ply and two small nut to hold axle of wheels ( Gas welding) . This arrangement  has very good strength.

I don't know , it will work or not .All of you are requested to review this design and suggest(weight- not measured , may be 30-40 Gms apx).

Pictures were taken from Mobile , so sorry for poor quality of pictures.

Regards
Mohan

vishalrao

Quote from: kamaraj74 on August 23, 2012, 04:29:50 PM
hai vishal,
iam using 3mm aluminium strip, let me know any other option,

auw is 1200 grams
suggest me motor,battery,esc and prop

Are you sure it's 3mm? Looks like 2mm. 3mm would be too thick I guess. The reason I asked you is because I wanted to implement the same thing! Do you get flat aluminum sheets or rolled ones? If it's rolled, then I think there would be some work straightening it. How did you cut it?

Regarding your setup, I would recommend this motor:
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=517

...with a 10x5 prop, 30A ESC and 3s 2200 mah battery.


vishalrao

Dear Mohan,

Can't make out clearly from the pic about the fixing mechanism in the top.

While browsing today, I just found this web page:
http://www.foamflyer.info/landinggear.pdf

I think it's a very efficient one to try out.

kamaraj74

sorry about thickness it is 2mm i bought from aluminium fabricator shop it is stright and iam using 1.5 inch bolt for wheel mounting

because when it is landing the total shock will be absorbed in the bolt
bolt only bend

vishalrao


kamaraj74

#47
iam using following motor and speed controller

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=12919

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18966

when i connect this all servos working fine and  also motor responding initially

when i give throttle motor does not spin
advise me


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SunLikeStar

Make sure your throttle stick is all the way down to the "Full off" position when you connect your battery to esc.

rastsaurabh

also the trimmer to be on the lowest..... if you have a FS TX 6 ch the left switch is for throttle cut try changing that. ( throttle is 3rd channel - just for info)