On May 15, 7:21 pm, Michael Warner wrote:
On 15 May 2007 10:05:24 -0700, Chris Nelson wrote:

So I picked up a used tandem (Trek T900) and its a hoot but it has
some rear shifting problems. More specifically, when shifting the
chain momentarily sits on top of the cogs before settling in, creating
a temporary cadence increase. Once shifted, it runs fine. It happens
on up and downshifts, and I believe to have it adjusted correctly as
far as indexing, because it shifts flawlessly in the workstand. It
only has problems under load.

IME a bike which shifts perfectly on the stand but badly under load
has an over-worn chain and/or cluster. Try replacing the chain, but
you'll probably also have to replace the cluster.

--
Home page:http://members.westnet.com.au/mvw

I ordered a new chain, its an 8-speed SRAM chain so it may fit the cog
better. Derailleur looks straight, cable is nice a smooth. I guess its
OK that the derailleur is a 9-speed?

If the chain doesn't work out, I'm ready to just get all new 9-speed
MTB stuff, this way I can get higher quality XT level. The hub is a
noname. If the hub fits an 8-speed cog, will it also fit a 9-speed
cog, or will I have a problem there?

Chris