main gear rubbing

[wiseman]

after a little rebuild i put the Trex450 up for a test flight this morning, all ok except the main gear seems to rub the frame, all parts replaced are Align, any pointers to look for as i strip it down

[GIXERMAN]

If it wasnt rubbing before , you have possibly assembled wrong, or from memory is there a little spacer that goes on top of maingear. If sport or v2, if pro might want a different thickness washer under main shaft on top of bearing block

[wiseman]

Hi, Brian, its a sport, there is a spacer between main gear and bottom bearing but as every thing is align surly every thing will be fine, im going to strip it down and have a close look with the spacer being top of the list of culprits..

[GIXERMAN]

Hi, Brian, its a sport, there is a spacer between main gear and bottom bearing but as every thing is align surly every thing will be fine, im going to strip it down and have a close look with the spacer being top of the list of culprits..

In that case if spacer was not there, would be higher and closer to frame

[Paz26181]

On my 450 sports v2 i had to put a spacer on top of the gear to stop it rubbing the frame. Hope it helps..

[wiseman]

its stripped out now i cant find any thing that would cause the main gear to rub, wondering if an additional brass shim placed on top of the brass spacer would cure, any thoughts on that idea, then again i have to locat one

[GIXERMAN]

its stripped out now i cant find any thing that would cause the main gear to rub, wondering if an additional brass shim placed on top of the brass spacer would cure, any thoughts on that idea, then again i have to locat one

Is it assembled as manual? Is it a 450 align or clone, parts used align or clone.

[GIXERMAN]

There is 6x8 x 1.6mm oneway shaft ring that goes on top of maingear case is this fitted as manual ?

[Ian_R]

Is the one-way bearing sitting flush with the top of the gear hub? If the bearing is low in the housing it results in a high hub and gear on the main shaft; then the gear rubs on the frame.

[wiseman]

every thing is to the manual, the one way bearing is sitting slightly higher than the hub so that should give the clearance needed, if i allow for the clearance between frame and gear ive then verticle slop with the main shaft.