Sir i don't think same threaded shaft will be available here anywhere. No idea about hobbyking, I see some here too
http://rc4all.co.in/index1.php?cPath=2_87
I bought allen key(10rs) from local hardware store because hex screw driver didn't worked, removed grub screws using it and pulled the shaft out of the bell.

Quote from: Dharmik on September 21, 2012, 06:03:58 PM
As you know i am using these motors for my quad but their 65mm long shafts are unnecessarily long.

The same goes for dt700s/750s as well. Extra long shafts that need to be cut. :/

@dreamfly: Nice to see you come back! Are you still flying OP (if i remember correctly) or switched to Naza???

hey Hyd_quad,  I am glad to be back.  Had a lot of crashes off late.  Guess my stars were not aligned.!!!!
Anyway I am re-building the quad and should be up in the air.  Drying off my electronics since they fell into the water.  I have tested them all and they seem to be fine.  I love my OP board.  Hey I sold the Naza to a friend in delhi and guess what!!!!!!!!!!!!!! I was told that the quad flew away!!!!!  I really feel soooo bad for him for loosing the quad + board+ motors and all that was flying with it.   I really hope he finds it.  That's the problem with the Naza I think but I didn't have any such problems with it.  Wonder what really happened.  Poor chap.

Quote from: dreamfly on September 22, 2012, 06:13:47 PM
Wonder what really happened.

Perhaps it was a problem with the radio? Was there anything equivalent to failsafe? Was it a flysky/turnigy/hobbyking radio? If yes, then the receiver (the OEM of all these is flysky) sends the last receivd signal to the FC incase of signal loss. So if it was flying before the singal got cut, it will continue to fly!!!
This happened with me once (with props off), whenever I switch off the radio when my board is armed with some throttle, the throttle continued until the signal was back and I reduced it = flysky sends the last received signal until signal is back.

After reading this i decided to try what happens on my quad once single is lost. It went to full throttle!  
I then immediately switched the Tx back on and it came back to normal.
I haven't setup failsafe correctly or forgot about it completely - will figure it out

Which FC was that?
In multiwii there's a #define named MOTOR_STOP that enables/disables the feature you mentioned.
I always like to have it uncommented so that the motors don't spin up when I accidentally switch the Tx off (with board armed).

Quote from: raja_mastana on September 23, 2012, 10:05:16 AM
I haven't setup failsafe correctly or forgot about it completely - will figure it out

Meh, my radio doesn't have failsafe...! 

FC is KK2

I guess there will be an option similar to motor_stop either in the LCD menu (not probable...) or the firmware .hex file...

Maybe this
http://www.rcgroups.com/forums/showthread.php?t=1702739
or this
http://www.rcgroups.com/forums/showthread.php?t=1727872

Well all I can say is that the Naza could still be way off being a production FC.  I think a lot of testing is still required after reading these posts.  We are happy to see a product from the outside.... But when it flies away from you... That's when the bashing starts.  Well it could happen to any FC but some lessons to be learnt here.  May be I was just lucky and survived the fly-off.

Quote from: dreamfly on September 23, 2012, 12:36:25 PM
Well all I can say is that the Naza could still be way off being a production FC.

It doesn't seem to be naza's fault at all, i think it's an issue with the radio.
Btw, what did that guy do? Did he start searching for it, and did you ask his opinion as to what he thinks might have caused the quad to fly away?

Quote from: Dharmik on September 23, 2012, 12:04:00 PM
Maybe this
http://www.rcgroups.com/forums/showthread.php?t=1702739
or this
http://www.rcgroups.com/forums/showthread.php?t=1727872

Yes, nice and relevant threads.
@dreamfly: i hope the radio ur friend used was 2.4ghz

I too dont believe that naza has any issues.  Yes my friend used the Turnigy Transmitter which is a 2.4GHZ.  If the Naza has the RTH it should have worked flawlessly.  Also when the transmitter was turned off, which my friend was actually trying out,  it should have stayed put and not start going higher and higher very slowly. The Naza has to go only upto 20 ft and then RTH. Where was the FC getting the signal from to go higher and higher when the transmitter was turned off.... I Don't get it.  Well May be it was the transmitter, But what when it was turned off? 
He is still searching for it.  No word of it as yet.  Really hope he finds it soon. 

now that's strange and confusing....

Quote from: dreamfly on September 23, 2012, 04:42:26 PM
... Where was the FC getting the signal from to go higher and higher when the transmitter was turned off.... I Don't get it.  Well May be it was the transmitter, But what when it was turned off? ...

It is a good question.
I also understand that setting failsafe will solve the problem i.e. whatever position the Tx stick was during the bind process, the Rx would go to that setting whenever signal is lost. Normally we set failsafe to 0 throttle.

What i don't understand is; (assuming failsafe is not set)
what causes this full throttle at signal loss?

Raja_mastana,  On Naza the failsafe feature is set using software.  It's a very simple click of the mouse. and it's done.   On the other FC's we use the bind process and when there is loss of signal the quad just slowly decends or falls to the ground instead of flying away. 
On the Naza though there are 2 failsafe settings. 
1. To land immediately
2. To RTH and land.

I have heard of the Naza flying away on some other forums as well and since there is no way we can set the binding process unlike other FC's  we are at the mercy of the software.  That's one big drawback of the naza.  When it flies, it really flies like a dream but there are not many fine tuning features one can tweak with. 

Quote from: dreamfly on September 24, 2012, 03:12:56 PM
That's one big drawback of the naza.  When it flies, it really flies like a dream but there are not many fine tuning features one can tweak with. 

That's why i call it an iFC (note, 'i' does NOT stand for intelligent)
I don't mean to offend you, but naza is just pure proprietery crap. The protocols, sensors, processors and platforms are all either proprietary or undiscolsed. No question of tweaking anything/anywhere...
I guess tht is why u switched to OP?

For me the fun lies in the Tweaking.  May be for some others it lies in the flying.  I want to spend time tweaking and looking at the GCS. and once we get into the tweaking.  I guess no other Closed source FC's are going to be fun to work with.  I have also looked at the other Open source like the multiwii and they also can be fine tuned. Mr. Ashta uses the Multiwii interface to tune his copter and you wont believe how well his copter flies even with most of the propellers and motors way out of balance.
The opensource community is spewing out quality code these days and it's just a matter of time when every body can fly the quad.

So true... more fun lies in tweaking but then it depends on the user too.
Yeah, I am aware of ashta sir's multiwii. It flies great.

Quote from: dreamfly on September 25, 2012, 10:05:59 AM
The opensource community is spewing out quality code these days and it's just a matter of time when every body can fly the quad.

I have switched to the AfroFlight (32-bit multiwii) community now! This ~$70 board (with it's 32-bit cpu) is comparable to most ~$150 FCs and is completely open-source! All four sensors are integrated onto a small 36mm x 36mm board with an onboard serial programmer too. Has gps, bluetooth and CPPM rx supprt too.

Hey you are flying the Afro  from TimeCop!!!!! Would like to get some feedback on that.  TC's a great guy.  Have you started flying with the Afro as yet.  So it uses the Multiwii code huh?
Do you have any videos of it flying.  

Me too excited to see AfroFlight in action. I see CC3D in news here.
http://www.rcgroups.com/forums/showthread.php?t=1738634

Ah that's Good news.  I used to be a diamond before ( first preference to test th boards) but now I have to stand in queue like the rest. 

yeah the naze32 white pcb version from timecop...
No i haven't started building yet.
It pertains to multiwii only in the sense that it uses it's gui and programming logic. The downside is that it's not ardu-based (with which most of us are familiar).

hey, I got a notification that I was one of the lucky few to lay my hands on  the CC3D.  So my order is on the way.  yepeeeeeeeeeeeeeeeeee.  Software isn't officially released yet! but I have access to it anyway.

That's really good news sir. Can you post new features of CC3D?