View Single Post
Old 03-12-2011, 07:54 PM   #13 (permalink)
Mojappa
Registered Users
 
Posts: 11,438
 

Join Date: Nov 2009
Default

Quote:
Originally Posted by lenrev View Post
ISSUE
Can probably add that the main gear and shaft are a press fit and the gear will shift until there is about 1/16-inch gap between top of gear and the frame.

SYMPTOMS
Heli won't lift and vibration occurs at high RPM (blades appear out of track).

FIX

Remove landing skids and hold opposite end of main shaft while pressing the main gear until there is approximately 1/16" of the main shaft end protruding out of the main gear.
Would add that the gear can spin on the main shaft, make sure the flat spot on the shaft is lined up with the flat spot in the hole of the main gear.

Also, this is by design that it slips, it helps absorb energy in a crash and should be one of the first things to check after a crash.
__________________
THIS IS MY SIGNATURE. THERE ARE MANY LIKE IT BUT THIS ONE IS MINE.
Mojappa is offline        Reply With Quote