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j0pp3 wrote:
For a serious runner it's possible to replace the diff balls with modern ceramic balls.

/j0pp3

What size are the balls and are they the same size as the ZX-5 balls? I want to get some for my two runners

Jay Dub wrote:I have always been a fan of the associated stealth grease for the diff, and black grease for the thrust. -Jeff

Thanks Jeff and j0pp3. I did as recommended, black grease for the thrust and Kyosho diff grease for the ball diff.

I'm still unclear on how to properly adjust the diff, though...the aforementioned instructions are useless because "the diff body should not turn idly" is arbitrary and makes no sense. I got the diff outdrive on one side to reverse-rotate nice and smooth to the other side, but it seemed otherwise to be quite loose--maybe that's how it's supposed to be? When I tighten it even just a bit more, the reverse-rotation seems to have too much friction/resistance, and a bit more tight and it feels scrapey, which can't be right.

How do you guys recommend adjusting the ball diff, in empirical terms if possible?

j0pp3 wrote:

uniquenamehere wrote:Wow...nice work with the dremel!

Thanks!

Jerzi wrote:Very nice parts.
With dremel you can do what ever you want. And the finish is superb.
Jerzi

Word! Next part to create will be a Rear Plate (L). For that I will use an OT-114 as a blueprint even if I won't use it to mount a mechanical speed control. And after that I may try to do my own chassis designed to use saddle pack LiPo's but by then I think my runner will have it's own thread

If its any help I have had Fibrelyte make me this SWB chassis, along with some other custom parts which will turn up in my thread if I start this build next now the SP is nearing completion

Hey Joel,

Would you mind if I posted this build on my Website?

www.kyosho-optima.com

I will give you credit and link back to the forum thread.

Thanks.

This is an amazing thread. It deserves a bump.

Lavigna wrote: ↑Sun Apr 14, 2019 12:09 pm This is an amazing thread. It deserves a bump.

Damn right! Thank you for doing that. I just read the whole thing. Amazing.Never seen anything like it. I need to step up my game! Congrats to the OP.

Such a shame that all the incredible pictures from this thread are gone.

The build thread still lives on here https://www.kyosho-optima.com/midse.html

I referred to it many times during my ongoing Turbo Optima Mid SE thread.

Chuck

radioactivity wrote: ↑Sat Sep 25, 2021 5:58 pm The build thread still lives on here https://www.kyosho-optima.com/midse.html

I referred to it many times during my ongoing Turbo Optima Mid SE thread.

Chuck

Thanks for hosting all of that! It is such a bummer when images go away and I appreciate you archiving posts like this.