I just put a 16 cb and a 66 spur on my rc10gt. it goes ok on the road up until about 10mph then i think the clutch slips out and the engine revs out. i dont know what the problem is, i looked at the clutch and everything looks ok so what are some other things i can check out, the engine is the stock .15
thanks

Slipper clutch and diff. are suspect.

I'll second the motion on the diff. tigthen it up before it gets gritty

i have tried to tighten the diff before but i cannot seem to find where im supposed to do it at. i have taken off both tires and cvds and i cannot find where im supposed to puit the allen wrench. everyone ive talked to said it is super east to find so i must be the only person who doesnt know where to find it. also do you guys think that my gearing is to much for the stock .15?]

thanks

the gearing shouldn't be too much.

You'll need a small allen (I don't remmeber what size..3/32?) you put the allen driver into the side of the diff with the white plastic piece inside the outdrive

alright ill take a look at that. i was told to tighten the screw all the way then back out a half turn. is that correct? and also you seem pretty knowledgeable, what are some other small little things i can do to get everything i can out of this truck?

thanks

a .12 CV-R and a torque tuned pipe

All I can tell ya is keep your truck clean between runs, and make sure ya keep your screws tight, and don't run into stuff, lol

Would the torque tuned pipe from AE help me at all in the bottom end on my stock motor? and also i have been lookin into getting that OS motor so would that AE pipe work well with it or is there another pipe that would be better?

Keep an eye on the e-clips on the ends of the shafts, they have a tendency to dissapear. Also periodically check the tightness of the rear pivot block screws.(The big phillips heads on the bottom of the chassis in the rear)
Keep a supply of clutch bell bearings on hand.

Have you checked the slipper clutch?

The diff adjust screw is on the right side of the diff(passenger side). I'm not sure how far you will have to back it out...1/2 turn is the standard starting point, but you may have to change from that to compensate for wear, tolerances, tire selection, driving surface, driving style, prevailing solar winds, allignment of moons and stars, etc.

The way to test the diff to see if it is slipping is to set it on a bench and hold both rear tires. Now turn the spur gear with your thumb. First off...It should be hard to turn the spur, and make the driveline slip. Next, make sure that it is slipping in the slipper clutch.(the assembly that the spur is mounted to)
If the slipper is too loose, tighten it with the nut on a spring assembly sticking out the middle of the spur. Don't over-tighten this, as it is your stress relief for the drivetrain...every time you land off a jump or hop from a bump under throttle, it is like doing a neutral drop at WOT.[:@]

Yes the slipper clutch was the problem. i figured it out last night when i was running the truck with no body on, it was waaaay too loose. i tightened it too tight i think so i will check it out later today. i havent been able to find a allen that will fit the diff assembly, i need to go buy some more i guess.. after i tightened the slipper last night it acted normal again. i dont know if i like the new gearing tho. it took quite abit off of the bottem end and the top end isnt to noticable. i thought i would enjoy more speed but i think i enjoyed the torque more.