Chain Wrap/compatibility Problem?

[Matthew62]

I'm replacing my drivetrain and i've just bought a KHE Collapse chain and Surly 15 tooth cog to go with my Heatsink Cloud 9 set up, its all brand new, no old parts.

I've just set up the chainline perfectly straight and im trying to get the chain to the right length but it doesn't seem to want to wrap around the cog. I can get about three entire links to sit in the grooves of the cogs teeth, but every other link in contact with the cog doesn't line up, wherever the links in the chain join (the pins) seems to line up with the top of one of the cog's teeth meanig the chain wont sit in the cog.

Having only three links in contact doesn't seem to great. I was wondering if i'm missing anything blindingly obvious or whether there is a problem of compatability between these two items, or has something just plain been manufactured wrong. I've heard of chain wrap issues with 14 tooth cogs, but not 15, is it due to the thickness of the KHE and would perhaps a KMC chain be better.

Or does anyone else have this set-up and have either any problems, or finds it no poblem at all?

Any feedback or info would be massively appreciated.

Cheers,

Matt.

[NVWOCI WVS]

1/2 by 1/8 chain with a 1/2 by 3/32 sprocket or viceversa?

[Netherking]

I'm replacing my drivetrain and i've just bought a KHE Collapse chain and Surly 15 tooth cog to go with my Heatsink Cloud 9 set up, its all brand new, no old parts.

I've just set up the chainline perfectly straight and im trying to get the chain to the right length but it doesn't seem to want to wrap around the cog. I can get about three entire links to sit in the grooves of the cogs teeth, but every other link in contact with the cog doesn't line up, wherever the links in the chain join (the pins) seems to line up with the top of one of the cog's teeth meanig the chain wont sit in the cog.

Having only three links in contact doesn't seem to great. I was wondering if i'm missing anything blindingly obvious or whether there is a problem of compatability between these two items, or has something just plain been manufactured wrong. I've heard of chain wrap issues with 14 tooth cogs, but not 15, is it due to the thickness of the KHE and would perhaps a KMC chain be better.

Or does anyone else have this set-up and have either any problems, or finds it no poblem at all?

Any feedback or info would be massively appreciated.

Cheers,

Matt.

may be the chain needs to bed in, because it will stretch a little and bed into the new cogs u've got.

otherwise maybe you got the tensioner set up wrong? pushing down to much>? 15tooth is a small cog

[Matthew62]

I haven't even put the tensioner on yet, i was just wrapping the chain round to see what length it needs to be shortened too, thats when i noticed it wasn't really wrapping around. I'm hoping it is a matter of bedding in, as it wraps perfectly around the 18tooth cog that comes with the cloud9 bashguard - but its soo tight with the surly its unbelievable.

[AdamR28]

Ah right... get the tensioner on and try it

[scousertrials]

I have the same setup and it works fine.

Sorry to hijack your thread but could i add a half link to the KHE collapse chain

Image borrowed from http://www.alansbmx.com/product_info.php?c...products_id=897

Edited September 27, 2007 by scousertrials