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Old 06-03-2017, 11:43 PM   #1
I wanna be Dave
 
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Default Check your gear mesh guys

After my first "testing session" just messing around the house, I checked temps on the motor and ESC and both were much warmer than I thought they should've been for such a short run. I decided to check gear mesh and low and behold, I found this. The pinion was pushed out of alignment from the spur and the mesh was tight to the point of binding. The RTR setup has both motor screws in the "C" holes. I realigned the pinion back to the center of the spur first then moved the motor mount screws to the "D" position. Perfect! Just a slight *tick* and no more binding and I'm making full contact with the spur now. It's only three screws to pull the top spur and pinion cover so 5 minutes of your time will ensure a lot more life out of your motor and spur.
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Old 06-04-2017, 08:23 AM   #2
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Default Re: Check your gear mesh guys

I just checked the mesh on mine and it was super tight. It's on the "D" hole now. Also, I adjusted the pinion and had a bit of an issue with the pinion set screw hitting the spur gear so in my case it had to be moved out a bit. Just keep that in mind. All is good with the truck now.

Thanks for posting Screamer!
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Old 06-04-2017, 11:59 AM   #3
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Default Re: Check your gear mesh guys

Im glad I read this. Mine was set in the C holes and was very tight.
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Old 06-04-2017, 02:56 PM   #4
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Default Re: Check your gear mesh guys

So there are different holes for mesh and not a 'slider hole' ?
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Old 06-04-2017, 03:24 PM   #5
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Default Re: Check your gear mesh guys

Quote:
Originally Posted by crazee horse View Post
So there are different holes for mesh and not a 'slider hole' ?


That is correct.
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Old 06-05-2017, 08:17 AM   #6
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Default Re: Check your gear mesh guys

my mesh was fine but the pinion was 1/2 way fwd on the mtr shaft like your's.....
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Old 06-05-2017, 08:34 AM   #7
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Default Re: Check your gear mesh guys

Mesh will be fine, its the gear placement. Harley posted about this.

I checked mine and it was alright (no contact or issues), but I did move it slightly to get 100% engagement.
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Old 06-05-2017, 08:39 AM   #8
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Default Re: Check your gear mesh guys

This is poor assembly and quality control on the part of Traxxas. Traxxas is typically better than this.

Quote:
Originally Posted by crazee horse View Post
So there are different holes for mesh and not a 'slider hole' ?
Yes. It's a system that many companies have used and it works well.
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Old 06-05-2017, 09:49 AM   #9
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Default Re: Check your gear mesh guys

Always go over a RTR checking assembly, gear mesh, oil in shocks, etc...especially the "first batch" Production issues are bound to pop up.
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Old 06-05-2017, 12:38 PM   #10
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Default Re: Check your gear mesh guys

Screamer, thanks for the headsup and great pic!

Quote:
Originally Posted by JatoTheRipper View Post
Yes. It's a system that many companies have used and it works well.
Yes, the preset holes for different pinion/spur gear combos works very well!

Quote:
Originally Posted by OSRC View Post
Always go over a RTR checking assembly, gear mesh, oil in shocks, etc...especially the "first batch" Production issues are bound to pop up.
X1000
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Old 06-05-2017, 02:35 PM   #11
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Default Re: Check your gear mesh guys




Gear meshing
Involute gears have the invaluable ability of providing conjugate action when the gears' centre distance is varied either deliberately or involuntarily due to manufacturing and/or mounting errors.

Easy!
DANotes: Spur gears: Gear meshing
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