Topic: Clunk from transmission under load

[scotty]

If I drive normally and accelerate in 1st 2nd and 3rd gear there is a clunk noise a momentary loss of power and some transmission slipping.  Feels like gears are jumping.  Sometime if makes a rattle after the clunk.  If I ride very slowly it hardly happens.

Any ideas? 

 Also,  the clutch is pretty worn out, and needs to be replaced.

[scottly]

What do your sprockets look like? If severely worn, the links of the chain can jump over the worn teeth..

[PeWe]

I hade a chain whereappr.  1/3 of all the rollers were gone... similar problem until the chain jumped off in low speed, 30mph. Before that drove like a racer champ 100-110 mph on a small winding road....