tc3 drivetrain

Old 09-02-2004, 08:19 PM
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what are somethings i can do that cost no money, to free up my not so free tc3 drivetrain, any links?
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Old 09-02-2004, 08:30 PM
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Clean and get your bearings spinning as free as possible. Also shim the gears to get it spinning as smooth as possible.
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Old 09-02-2004, 08:56 PM
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i read an article once that the two bearings that are in the diff caseing like the two bearings that are on the ends of the outdrive well as most of you know if you take one of those bearings off you can push it in to the top part of the caseing and it wont fall out because its a nice tight fit, the article said you should carfully shave down the space where that bearing sits so that when you put the bearing in it and tip the case over it should fall out under its own weight, is that a good idea?
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Old 09-02-2004, 11:01 PM
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go buy the latest edition of Radio Control Touring Car. It tells you everything.
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Old 09-03-2004, 06:10 AM
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kh15- That's correct but don't dremel too much or it gets sloppy and the diff will move around in the case. I have dremel bit about the same size as the bearing curvature, just a light touch which appears to just "scuff" the case is usually all it takes. However, the most important thing is using shims correctly to get proper backlash on the ring-pinion gears. Getting proper mesh would help more so than proper treatment of bearing with bad backlash, so get that right first. The way they tell you to shim in the manual isn't "always" the best for each car, so play with that for a bit.
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Old 09-05-2004, 08:26 AM
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That's interesting some of you suggest shimming, I got the best amount of freespin out of the drivetrain by removing all the shims in the car. The spur can walk a little in it's hub but it spins much more free than it did when it was properly shimmed. It tends to stay loose from the diff rather than being tight and adding drag.

I'd try both and see what happens.

mtc3od is right, that mag has clear pictures and everything in case your confused at all.

If your willing to keep up on the maintenance, I found removing all the bearing seals off all the bearings and running them dry helped a little too. But it requires cleaning more frequently, I have to clean mine every week.
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Old 09-05-2004, 01:21 PM
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I got the same results from not shimming, much more free, kind of floating.
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Old 09-05-2004, 02:37 PM
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I tried it without the shims and it was more free, but it also resulted in more torque steer. I ended up putting the shims back in.
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Old 09-05-2004, 07:11 PM
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whats tourque steer?
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Old 09-05-2004, 07:32 PM
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Kh15,

Torque Steer is when you punch the throttle and the car tends to turn off in one direction on its own.

Brandon Melton,

What do you mean by "backlash"?

Thanks,

Blake
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Old 09-05-2004, 08:38 PM
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oh
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