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Re: Kyosho Transmission ??s
Posted: Thu May 31, 2012 12:23 am
by Mad Racer
I'm pretty sure they are the same screws that are used to screw the old 3 part wheels together . Small self tappers.
Re: Kyosho Transmission ??s
Posted: Thu May 31, 2012 12:59 am
by fredswain
I just don't know what size that is. I don't have any Kyosho cars for reference. I need them for a Bullet Power Glide belt drive for an RC10. It was based on the Ultima gear diff and uses the same screws, which I am missing.
Re: Kyosho Transmission ??s
Posted: Thu May 31, 2012 1:51 am
by aip47-2008
fredswain wrote:I just don't know what size that is. I don't have any Kyosho cars for reference. I need them for a Bullet Power Glide belt drive for an RC10. It was based on the Ultima gear diff and uses the same screws, which I am missing.
Here is a shot of the Ultima differential assembly.

Re: Kyosho Transmission ??s
Posted: Thu May 31, 2012 8:25 am
by fredswain
Sweet. That's them! Thanks.
Re: Kyosho Transmission ??s UPDATE: Cluster gear solution/Mo
Posted: Thu Jul 26, 2012 10:50 pm
by losiXXXman
So here's a solution to the cluster gear for all other Ultima and Optima guys needing the gear...
Traxxas PN1884 from the hawk/sledgehammer/bullet. The gear takes (2) 5X11 bearings. It is a 44t main gear/20t secondary. This changes your ratio with the stock counter gear to 2.73. The gear comes with a tapped 5mm shaft, you just have to drill your motor plate a new hole ~.75 (maybe an extra .0625 or so mine meshed to tight.) from the center of the top shaft. You can also use the 26t counter from the Thorp OD set, and I don't think you'd have to drill a hole at all. That outside setup is 26/20 - 2.54 ratio.