RC10Talk - The Net's Largest Vintage R/C Community

You can also order the wheels and tires from the Ultima rerelease. https://www.rcmart.com/kyosho-optima-50x83x36mm-block-tire-hard-2-pcs-ott244h-00083336 https://www.rcmart.com/kyosho-scorpion-2014-front-tire-medium-2-pcs-black-sct001mb-00074061 https://www.rcmart.com/kyosho-ultima-8d-50mm-front-rim...

If you're concerned about overheating, putting larger diameter tires on AND going with a bigger pinion gear will increase the chances of overheating...just saying. You're already pulling wheelies, so try reducing the punch a notch or two, and lessen the drag brake setting. I wouldn't mess around wit...

I'd be careful with the gearing. For off-road applications, that esc only looks to be rated down to 13.5 turns.

I think that they used a 3/8" OD bearing, which is ~9.5mm.

Depending on the wheels, you "might" be able to open them up to 10mm. I don't know about bearing availability.

Or you might can try a piece of 3/8 to 5/16 shim bushing material. 8mm and 5/16 are nearly identical.

The RC10 says 8.68:1with 10.5

So.....

If that's the case I would start with a 28 or 29 tooth pinion

76 ÷ 28 × 3.3 = 8.96 FDR
76 ÷ 29 × 3.3 = 8.65 FDR

Does the esc have timing function? Yes it does. By default it is set to 0. I have not tried to adjust the timing as I figured even at 0 it should be pretty darn quick. :? This will be your problem, there's a reason the ESC comes with the default timing set at 15 degrees. 0 degrees timing is only re...

I was referring to the diameter of the rods. Mine were 2mm. Most commonly available ends are made to me used with 4-40 and 3mm rods.

And the original ends aren't tapped. They are just drilled a little undersized and the rods cut new threads when installed.

I know this thread is 6 years old, but I just bought this exact motor from the OP. Thought it was pretty cool.

Interesting reading, thanks for sharing I don't own a Raider, but im always interested in gearing cars correctly etc, What i dont quite understand is, I'm assuming that when they say 32 idler or 36 idler, thats effectively like a spur gear (as in the 36t or 32t gear matches up to the pinion) and if ...

I finally came up with a sacrificial dogbone to complete my drive line assembly. I also decided to swap in a spare Traxxas ESC for the testing duties. What I found out with my initial testing is: 1. This RPM meter is are constant drain on a connected battery when not in use. It's definitely a batter...

https://www.rcmart.com/xtra-speed-spring-steel-universal-drive-shaft-set-for-kyosho-1-10-ultima-optima-2016-javelin-xs-om27011-00100843
They sell for about $19
I use them in my new and old Ultimas, My Rampage GP10 , and my Optima.

Thanks Cas22!! Also I know its been spoken about in here but I haven't actually seen anyone state it exactly. Can anyone confirm that when running the 32 tooth idler, that the 18 tooth pinion fits using the one of the standard motor mount holes with no modification? Cheers Also if I wanted to run s...

Found an easier solution for the rocky, ran the 3racing universals for the optima ( very reasonably priced) and swapped out the M10 x 5 x4 mm bearings for M10x5x3mm, gives 2mm of wiggle room and they fitted nice with some shimming. Also the Tamiya hard outdrives splines fit right up to the factory d...

Bonkers