STOP skipping

[Nailr65]

Just completed a fresh'n up on my 1995 GT RTS 2. Existing 8 speed Hyperglide in great shape on the rear, Shimano XTR M925 crank set replaced center ring with good used part (impossible to find new) and a new Shimano IG 8 speed chain. Everything went great. Took a ride and when I am in the center ring up front and the large ring in the rear the chain skips. Does anyone know what might cause this?

[painkiller]

how about a pic from the rear with the chain on the big in back and the middle up front, and a closeup side shot straight down from above, and one from the side with the chain off the big cog in back so I can look at the shape of the teeth.
What rear cluster do have on it right now? i.e. brand and model

[1FJEF]

Existing 8 speed Hyperglide in great shape on the rear,

[Nailr65]

1FJEF,[/align] Is there a question there

[painkiller]

I think he was telling me that you have, a shimano hyperglide cassette, but forgot to tell me what model i.e. Hg-30, hg 40, 70,90, or xtr. so ask him what you have exactly and let me know. and get the pics for me to look at too.

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If you are using XTR and decide you want to replace it let me know. I am sure I have a new old stock one hidden somewhere

[Bill]

How many teeth on the middle ring in the front? As pain killer asked some pictures up close would be helpful too. Nice GT too