No Go!

[team-red-rider]

i was out on the mx track riding my 85 110 it was goin great then the chain poped i put back on the rear sprocket and its still on the front sprocket buy iy wont go at all it just sits there ideling why?

[atctim]

I'd start with the secondary drive unit (hi-lo range selector). All of that is on the outside of the front sprocket. Did the chain ball up bad? Are you sure the chain is on the front sprocket?

[team-red-rider]

yea the chain is on both it really didnt break just came off the rear sproket

[atctim]

what does it do when it is in gear? Does it rev freely, or does it bog when you give it gas?

Could be transmission related or even output shaft related - how tight was the chain? Was it super tight or was it normal.

[team-red-rider]

chain was kinda loose and it just revs freely like its in neutral

[ScottZJ]

Check that high/low switch on the side of the case. Sounds like it could have knocked it into neutral.

[team-red-rider]

i found the problem the lil arm under the right cover and the big gear thing are shattered from i guess shifting hard?