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Old 10-01-2007, 04:32 PM   #1
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Default NTC3 Two speed issues... NEED HELP

Okay, whenever i start running my nitro tc3, it starts and runs great except for right around the time it should engage into 2nd gear the motor free revs like its in nuetral. I have tried slight adjustments on both set screws on both clutchs shoes just thinking that the shoes are slipping on the clutch bell. after that didnt fix it i tried some major adjustments and that has yet to yeild any results. Then today i was running it and i would start it on the bump box and the tranny was engaged with the wheels and spinning them the way they should. When i blipped the throttle it engaged second gear and then i grabbed a handful of brake, the tires and driveshaft stopped but the spur gears and clutch bell kept turning. I stuck my tuning driver against the clutch bell to get the spur gears to slow down and then it seemed like the one-way engaged again. Is my one-way bad or is it just an adjustment issue? I am about at my wits end with this two speed and i am about to just buy all new components.

Kyosho 777 WC w/ big bores, RB S5, ACE 1313 s., Air 357 t., JP-3
HPI Savage X SS, Axial .28, Hitec 5645 Steering servo
Nitro TC3, O.S. .18 CV-R
Associated RC18T, Brushless, Lipo
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Old 10-01-2007, 04:41 PM   #2
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try this post in the RC10NTC3 Post....
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Old 10-01-2007, 06:34 PM   #3
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I haven't ran a ntc3 in couple of years but it seems like your one needle bearing is going bad. Try to clean your oneway needle bearing with some motor spray or brake clean( something with no oil in it) this should help keep your oneway engaged if it still occurs you may want to replace your 1st gear oneway. but check out the Rcntc3 thread it has a ton of info in it.... hope this helps

Also you may need to take the 2speed apart and check for the cross pin that latches the 2 speed shoes to the shaft.
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Old 10-01-2007, 07:58 PM   #4
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Mine did the same thing last year. I cleaned the two way bearing and lubed it. Problem went away.
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