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View Full Version : main shaft ad drive gear wobble


Muck76
01-28-2007, 11:58 AM
This is probably a no brainer question, but i have to ask.
In watching to make sure every thing spins fine on my CPP i noticed the center shaft wobbles. I took the blades off to see if it was them and it still does. Not a huge wobble but enough it makes the heli vibrate.
My question is whether or not the main shaft will be a little crooked and whether or not i should replace be fore i fly it again?

(MAin shaft= one that drives the main rotors)
(CPP= CP PRO)

thansk Matt

carlo_the_wonder_frog
01-28-2007, 05:31 PM
Replace it, no questions asked. Its a fairly easy task, and if you crash again you will be doing it again, so might as well get through the first one. Vibrations=bad.

livesounder
01-28-2007, 06:19 PM
The shaft bends quite easily in the event of a crash. It can also be staightened quite easily if you have a known flat hard surface (I use the top of my table saw) and a light hammer.

fast
01-28-2007, 07:15 PM
I don't want to hijack but I am having a similar problem. I just replaced the main shaft and the plastic piece at the top of the shaft that connects the flybar. Now I noticed that my main blades wobble a lot. When I work the cyclic it looks like if I want full towards the tail that it would chop right into the boom. The helecopter also shakes violently when the head is spinning up. I would swear that I put it together right but not sure.

Anyone have sugestions or questions that can help me figure this out.

carlo_the_wonder_frog
01-28-2007, 11:04 PM
Check your Feathering shaft, it is also probably bent. Also make sure all the screws are tight.