C
Hi
Having recently built a wheel for a fixed gear set up, am now onto the
next problem.
Parts ...
new SRAM PC58 chain 3/32",
new 16 tooth cog (supposed to be 3/32" - bought from the same place as
hub),
well-used 42 tooth chainring reversed, put on outer (still needs to be
1 - 2 mm further out).
The idea is that once I've briefly tested the thing out, I'll get a new
chainring.
Got the chain tension correct (I think) after reading various methods
(e.g. tight as it can be without binding).
Spinning the cranks, there's a regular, light, discrete rubbing coming
from around the cog. Didn't think that was too bad but I took the chain
off and there are two sets of scores/marks along every other roller.
i.e. on one roller the mark is near to lhs plate, next roller the mark
is near to rhs plate.
Any idea what's causing this grinding and how to solve it? It's made
quite a mess of the rollers given the small numbers of revolutions.
ccr
Having recently built a wheel for a fixed gear set up, am now onto the
next problem.
Parts ...
new SRAM PC58 chain 3/32",
new 16 tooth cog (supposed to be 3/32" - bought from the same place as
hub),
well-used 42 tooth chainring reversed, put on outer (still needs to be
1 - 2 mm further out).
The idea is that once I've briefly tested the thing out, I'll get a new
chainring.
Got the chain tension correct (I think) after reading various methods
(e.g. tight as it can be without binding).
Spinning the cranks, there's a regular, light, discrete rubbing coming
from around the cog. Didn't think that was too bad but I took the chain
off and there are two sets of scores/marks along every other roller.
i.e. on one roller the mark is near to lhs plate, next roller the mark
is near to rhs plate.
Any idea what's causing this grinding and how to solve it? It's made
quite a mess of the rollers given the small numbers of revolutions.
ccr