4#3b Rotor Head Problem

papu · 05-04-2012, 09:26 AM

One of the brass collar bushings that the flybar goes through keeps coming loose and crashing my 4#3b. What is supposed to be holding the little @$#%&*( in place?
Use a drop of Ca?

Steve Joblin · 05-05-2012, 09:06 AM

You can certainly try a drop of CA, but make sure it doesn't get on anything else. I don't think you can just buy that small portion of the head, which means that you might have to spend the $15 or so to get the entire head assembly. Luckily, many places still carry them. I think it is part HM-4#3B-Z-09

papu · 05-06-2012, 11:21 AM

The Ca worked wonders. This was the first head I had rebuilt from scratch. I rebuilt it as vibration from a bent shaft was making the tail go crazy. Its flying almost as precisely now as it did brand new, but the tail is still making somewhat repetitive forcefull, but small, corrections in a hover. I had hoped it would now be perfect. It has the Turbo Ace outrunner and the 2.9 gm brushless tail and the 2605a receiver. I now have the flat spot on the receiver's MIX control at about four o'clock and it seems to twitch the least there. I don't know if getting it back to factory spec is unrealistic or even unessasary at this point. but if you think there are bases I have not covered yet feel free to speak up.
Phil

05-04-2012, 09:26 AM	#1
papu Registered Users Join Date: Mar 2012 Location: Grand Rapids, MI USA	4#3b Rotor Head Problem One of the brass collar bushings that the flybar goes through keeps coming loose and crashing my 4#3b. What is supposed to be holding the little @$#%&*( in place? Use a drop of Ca?

05-05-2012, 09:06 AM	#2
Steve Joblin Registered Users My HF Map location Join Date: Aug 2008 Location: Blue Bell, PA USA	You can certainly try a drop of CA, but make sure it doesn't get on anything else. I don't think you can just buy that small portion of the head, which means that you might have to spend the $15 or so to get the entire head assembly. Luckily, many places still carry them. I think it is part HM-4#3B-Z-09 __________________ Walkera 4#3B, 4G6 Align 250SE, Gaui 200 Gootch 450PRO

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05-06-2012, 11:21 AM	#3
papu Registered Users Thread Starter Join Date: Mar 2012 Location: Grand Rapids, MI USA	The Ca worked wonders. This was the first head I had rebuilt from scratch. I rebuilt it as vibration from a bent shaft was making the tail go crazy. Its flying almost as precisely now as it did brand new, but the tail is still making somewhat repetitive forcefull, but small, corrections in a hover. I had hoped it would now be perfect. It has the Turbo Ace outrunner and the 2.9 gm brushless tail and the 2605a receiver. I now have the flat spot on the receiver's MIX control at about four o'clock and it seems to twitch the least there. I don't know if getting it back to factory spec is unrealistic or even unessasary at this point. but if you think there are bases I have not covered yet feel free to speak up. Phil