I'm going to be sourcing parts over summer to build a second cx bike.
I want to go 1x10 with a chain guard.
last season I raced a 2x10 with 34/46 - 11-28 (never went into 46 ring in a race though)
can I get a chain guard for a 34t ring (in a 5 bolt fitment)?
or is a 39 ring the lowest I could go?
with regards to building the crankset do I find a double I like, remove the rings and then use the spider, crank arms & bb to build my 34t setup?
or can I buy spiders/crank arms separately?
any help would be great
thanks
You'll need a compact crank to get a 34T ring on it.
As for the chainguide, something like [url= http://superstar.tibolts.co.uk/product_info.php?cPath=56&products_id=475 ]this[/url] will work fine.
I'd worry the chain would carry all the mud from a race through that kind of chain catcher and ultimately jam?
can I get a chain guard for a 34t ring (in a 5 bolt fitment)?
Yes, Stronglight do one, heres one at [url= http://spacycles.co.uk/products.php?plid=m2b2s149p2384 ]Spa Cycles[/url]
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or is a 39 ring the lowest I could go?
Stronglight do a 130BCD version as well if you decide to go that route.
with regards to building the crankset do I find a double I like, remove the rings and then use the spider, crank arms & bb to build my 34t setup? or can I buy spiders/crank arms separately?
Chainsets normally don't sell as spider only so you're probably better off buying a full chainset and selling the outer ring. But for £20 and if you don't mind having old school square taper then I've got one of these on my winter bikes and they're not bad.
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Again, from [url= http://spacycles.co.uk/products.php?plid=m2b0s109p2003 ]Spa[/url] (and I don't work there, honest!)
These work well with a chainguard: http://www.billys.co.uk/english/group.php?prod=chng-js
34/11 is a pretty small top gear, have you thought of trying a smaller outer ring first, like a 42?
might move upto a 39