B
Bob
Guest
I have some later model (LY-9?) 7spd freewheels that I am trying
to run. I mounted them up on a bike with some Sachs SC-40 chains.
The derailleurs are friction.
This has resulted in a very serious - as in totally unrideable -
chain skip/slip problem. It actually seems to be skipping several
teeth at once every couple revolutions. It all works fine in the
stand but on the road there's a serious issue.I tried two chains and
freewheels, both new, same problem.
I switched
the freewheel over to a Suntour 7spd and it ran fine on a long run
with lots of pumping action. So, it really appears to be a
freewheel/chain issue.
Is this a known incompatibility? I thought the Sachs SC-40 chain and
the Sachs freewheel were about the same vintage and both for 7spd
setups (?)
THanks,
to run. I mounted them up on a bike with some Sachs SC-40 chains.
The derailleurs are friction.
This has resulted in a very serious - as in totally unrideable -
chain skip/slip problem. It actually seems to be skipping several
teeth at once every couple revolutions. It all works fine in the
stand but on the road there's a serious issue.I tried two chains and
freewheels, both new, same problem.
I switched
the freewheel over to a Suntour 7spd and it ran fine on a long run
with lots of pumping action. So, it really appears to be a
freewheel/chain issue.
Is this a known incompatibility? I thought the Sachs SC-40 chain and
the Sachs freewheel were about the same vintage and both for 7spd
setups (?)
THanks,