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Forum: Walkera Helis - Dragonfly, etc..

05-04-2007, 12:37 PM

Replies: 9,493

Walkera #4 Fixed Pitch Helicopter Forum

Views: 853,321

Posted By robotronski

RE: Walkera #4 Fixed Pitch Helicopter Forum

Wow, thats a good price. Last one I found (avail to ship) was $38.00 US.

Hard to beat that deal...

Forum: Walkera Helis - Dragonfly, etc..

05-04-2007, 11:20 AM

Replies: 9,493

Walkera #4 Fixed Pitch Helicopter Forum

Views: 853,321

Posted By robotronski

RE: Walkera #4 Fixed Pitch Helicopter Forum

4-in 1 Motor Controller Repair Survey:

Lately I have been fixing a few 4-in-1's for many DF4/Falcon 40 pilots. Typically the failure is a dead main motor from a crash, no fuse protection so...

Forum: Walkera Helis - Dragonfly, etc..

10-26-2006, 08:14 PM

Replies: 9,493

Walkera #4 Fixed Pitch Helicopter Forum

Views: 853,321

Posted By robotronski

RE: Walkera #4 Fixed Pitch Helicopter Forum

Sure no problem, a camera rig will do the trick, but where do you mount the spacebar to recover from the inevitable CRASH!!!

[X(]

(G2 Sim spacebar = reset)

Forum: Walkera Helis - Dragonfly, etc..

10-26-2006, 02:47 PM

Replies: 9,493

Walkera #4 Fixed Pitch Helicopter Forum

Views: 853,321

Posted By robotronski

RE: Walkera #4 Fixed Pitch Helicopter Forum

Check out a quick fix I did yesterday...Funny story too...Learned alot

http://www.rcuniverse.com/forum/m_4914740/tm.htm

Diode is deliberatley connected backwards on purpose (stripe on...

Forum: Walkera Helis - Dragonfly, etc..

09-15-2006, 11:58 PM

Replies: 9,493

Walkera #4 Fixed Pitch Helicopter Forum

Views: 853,321

Posted By robotronski

RE: Walkera #4 Fixed Pitch Helicopter Forum

I've been following the motor control problems with the DF4. I did some digging and found the ultimate FET (mosfet) that has amazing specs. ON state resistance of 8 milli-ohms, with 100A
current...

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