New to nitro with a question

[GAZ-V-21]

I recently bought a losi 8ight t 2.0 every once in a while when the truck is not running and i try to roll it freely across floor by hand it feels like the wheels are locked up but if i give it a hard push it seems to break free a guy at track said clutch shoes does that sound right? another thing is since my last race now when i run the truck it will drive fine but when i let off throttle it will only sit at idle a few seconds before it dies is this just a tuning issue thanks ahead for any help you can give me.

[K_B]

The rolling thing could be a few things. Definitely check to see if the clutch shoes are hanging up. My guess is that the clutchbell bearings are shot. There's a slight chance that it's a diff issue. The next time it happens, roll it on the front wheels only and on the back wheels only. If they both lock up, then it's either the clutch shoes or the clutch bearings.

As far as the idle goes, if this thing is fairly new, the engine is still breaking in and the tune will have to change accordingly. I would just turn the idle stop screw in 1/8 turn or so. It could be that the low speed needle needs to be leaned out a bit, but it's hard to tell without seeing it in person.

Your best bet with tuning issuses is to do like you've been doing and talk with guys at the track. Most guys are more than happy to help you with a few problems; even on a race day.

[duanet]

i had a similar problem with my hyper. it could your brakes dragging with dirt or your servo is not centered and is applying your brakes. as far as your idle i would just google "rc nitro tuning" there are tons of tuning articles

[wolf16731]

If your clutch shoes or bearings have gone bad somehow, that could cause enough drag to where it will not allow you engine to spin freely at idle. Since it won't spin freely, the resistance will be enough to stop your engine much like how it would stop the engine if I put my finger on the flywheel to stop it (Yes, I have done that before, lol). Get those bearings and clutch checked out, I have a feeling that is the culprit.

[Chucksolo69]

I have a Losi Ten T and had the exact same issue you described. I'll bet if you move the air filter slightly upward and then try to roll the car, it will roll effortlessly. My airfilter was binding the brake servo rod and it was preventing my car from rolling free like it should when not running the engine. I also thought my diffs were bad until I moved the airfilter by accident and it freed up the drive train.

[lindada]

great answers