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View Full Version : SOLVED: Main gear rubbing frame


flyanything
05-23-2008, 01:59 AM
Hey guys. Is anybody having a problem with the top of the main gear rubbing the frame toward the rear of the heli? I've installed the gears and bearing blocks per the manual AND Bob's video and the gear set is not sitting parallel to the slot in the frame. The top of the main gear has about 1mm of clearance in the front and zero clearance toward the rear. When I spin the gear there is a slight wobble and the high spot rubs the frame pretty good... you can hear it scrape as the high spot passes. I made sure to tighten all the gear bolts in a star pattern to avoid warping the gear.

I've tried loosening up all the bearing block bolts to reposition the gears but there is really no wiggle room that I can tell. The bolt holes in the frame are exact and don't allow for any adjustment. I've already posted this question on the AvantRC forum but thought I'd ask here too.

Thanks,
John

Solution: bottom bearing block was on backwards. While bolting on the top bearing blocks, the bottom one fell off (just like in Bob's video!!!) and I just put it back on without checking the orientation to make sure the notch was toward the back...IT DEFINITELY MAKES A DIFFERENCE!!! Thanks Augusto!

Finless
05-23-2008, 06:34 AM
Hey it happens! This heli has TIGHT tollerences and anything put in wrong will show up FAST... Don;t feel bad! We all make mistakes :)
I am glad you figured it out!

Bob

CoronaL
07-28-2008, 09:00 AM
my gear is/was hitting too. My bearing blocks are all oriented correctly. It appears my gear is slightly warped. I mean so very slight, but still there. I've loosed the blocks and tried to "adjust" it out, and it appears I may have gotten it, but still a bit concerned.

The quality of the the Aurora kit is very nice, I'm not trying to bash on it in any way btw. I'm just a bit nervous b/c I've only had Align kits before and alot of stuff is already figured out for you there. I'm just worried I'll goof something up on my build and fubar the lot of it. I'm wating Bob's videos like 10x before I do anything. I think I'm saying "bear with" in my sleep now :YeaBaby: