4s lipo in a TC3, drive shaft issues - RC-Monster Forums

**4s lipo in a TC3, drive shaft issues -** 10.08.2006, 03:27 PM

I just bought a mamba 4600 and a 4s 4000 lipo pack for my TC3. I had an old main driveshaft in it that was slightly bent from a previous accident. The first time I revved the motor (maybe 1/4 throttle), the driveshaft bent further (from being out of balance), and started hitting the chassis. I already had a new one waiting to go in, so I have a brand new shaft in there now, but it still does almost the same thing. Free revving it with the wheels in the air, the main shaft starts to bend and and go out of balance by the time I get to about half throttle. It comes back straight when I let off though. Should I be worried about this when I drive it? It might not be an issue at all, since there would be a load on the shaft with the wheels on the ground, but I dont want it to start bending while Im driving, because it could bend far enough to hit my battery (brand new lipo). Ive searched the internet for upgraded stiffer driveshafts with no luck. Thanks for any help/ ideas.

Serum · 10.08.2006, 03:29 PM

Can you shoot a picture of the situation?

You are using 4S with the 4600? == too hot.

MetalMan · 10.08.2006, 03:43 PM

I'm using 4s with the 4600 in my Rustler. It's under the 65k RPM limit with the batteries giving 3.5v/cell. Granted, it's not the best setup, but it's within the limits.

You could try contacting Team Associated about this issue and see what they say.
http://teamassociated.com/feedbackre...contacting.htm

10.08.2006, 05:14 PM

Thanks for the replies.
I just drove it for the first time. It turns out this only a secondary issue, because I completely shredded my rear diff gears without touching full throttle once. Does anyone know of an aluminum diff ring gear and pinion for the TC3? I already have a spool in the rear, thats fine, its just the gear teeth that stripped. When I pulled the stock diff out to put the spool in there were no shims on it, so I didnt put any on the spool. But now I seethis and Im thinking I should have. I think Ill try new stock gears and shim them right. If anyone has any better ideas please let me know.
Thanks for any help.