210 Gear DIFF

[hottuna]

Originally Posted by Aran

when you open the gearbox stick the gear diff in one half of the gearbox (with the rest of the gears installed) without any shims and you'll notice it is level with the rest of the gears, adding the shims with only cause this tight friction people are getting.

It's true that no shims should be used. But the problem with friction is because of the gear being to big. Durango is looking at the problem.

[OneKiwi]

What have people used for orings? Are you using the ones that come with the kit or the 330099 orange ones?
Any leakage?

What grease are you coating it with? Black, clear or green slime? Or just soaking them in diff/shock oil under the build

[/tobys]

I used the kit ones with Green slime. I also soaked the gaskets in diff oil prior to fitting.

However, I have yet to run it but just standing out of the gearbox on the workbench shows no leaks

[stephenh]

Kit ones, with black grease and soaked gaskets in some shock oil for a while. Running 650cst and no leaking - ran it last sunday for about 8 runs.

[OneKiwi]

Thanks did the soaking and slime.

What did you think of 650? I just built mine with 2000 durango oil, I have 60wt losi oil that is about the same. What are you running on?

[hottuna]

I used 2000 WT that's delivered with the 410 diff, mostly because it's the best I had at home.
It's hard to say if that was good or not, as I had big problems with the diff. ESC ran hot, no speed on the straight, bearing in gearbox went to 1000 pieces.

I used the orange Kyosho o-rings, wet them with the diff oil.
The diff itself feels great, no leakage, if only the diff gear was a bit smaller... I've contacted Durango and they are looking into the problem.

[stephenh]

Started with 2k but the car felt lazy in the chicanes and tight turns. I went to 1k a liked it a lot. Tried 650 last week a thought it was too light. made the car snatchy and square up to quick. So back to 1k. Suggest you try that. I am racing on med-high grip astro.

[stephenh]

Sorry meant to add I am using the Schumacher Ultimate Diff Oil ranges. As long as you have the CST ratings it will be fine whatever you use......

[OneKiwi]

When I turn the outdrives on the bench (in hand) it does feel notchy, is that because it hasn't been run yet and needs a little running in or have I tightened it up too much or something?

[Big G]

mine's the same. I'll race it tomorrow and report back

[acorn28]

Mine also feels a little notchy, one side more so than the other. Nothing major though, sure it'll smooth out after a few runs.

Originally Posted by OneKiwi

When I turn the outdrives on the bench (in hand) it does feel notchy, is that because it hasn't been run yet and needs a little running in or have I tightened it up too much or something?

[stephenh]

Yes mine was notchy in my hand the first time and also in the gearbox. It was fine after a run or two. Also each time I have rebuilt it with new oil the diff will feel fine in my hand (having been run) but still notchy in the gearbox until I give it a run and the diff seats again with the idle gears such is the fine mesh between all the gears. Just make sure there are no big notchy bits when turning the spur/outdrives when the gearbox is in the hand. sometimes it takes me 3 or 4 attempts to put it all back in the gearbox and have it feel someway smooth prior to a run.
One last point. I race on Astro with some sand, and you do need to go round every gear and remove any small traces of sand grains to stop it from feeling even worse. the mesh is sooooo tight you cant even have the smallest of blemishes in any of the gears
HTH

[MatJohnson]

Ran mine for the first time last night. There was a slight notch when I turned the diff by the layshaft but it was fine last night, no overheating or anything.

[Big G]

What oil did you start with Toadeh? I'm gonna try 3k on carpet tonight and see where to do from there

[MatJohnson]

Used 5k in it at Oz. Am running it tomorrow so will know more then mate, was just a quick test to see if the car worked mainly

[corsa148]

Well running mine for the first time tonight I am running 3k in mine

[Philim]

Ran mine on Tuesday with 2k in it. Felt really good and very quiet. Action a little stiff ...felt like drag brake was on but other than that it was good

[Big G]

I'm unsure if I should start on 3k given how it feels in my hands, but you gotta start somewhere.

[corsa148]

Well run mine tonight for the first time used 3k well impressed drove better than I ever thought

[jonathan may]

so i have put the gear diff in my 210 but mine to with the gearbox closed is a very tight fit. Do they bed in or is the main gear to big. My sc10 geardiff feels alot loser and a lot smoother then the durango diff