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i've spent a bit of time this afternoon tinkering with the outer ring and bash guard - on the crank arms there is a slight ramp so it won't mount properly.

i whipped out the ol' vernier callipers and gave it a measure anyway, it's about 6mm out :( so i'm going to take smith's original advice and ditch the freewheel :) well, as soon as I have the money...

prob go for the surly 130 mm fixed/free hub. the chain line on that is 42mm, and my crank chainline is 41mm so should be ok. Phil Wood hubs look nicccceee but the price is crazy, and they'd look bloody weird on a roadrat i reckon.

ta for all replies.

hmm. i'm not sure if i can even get any chainring spacers onto the cranks, there is this chain guard on the outside of the spider and then chainring attached to the spider on the inside:

i'm rather puzzled by this whole chainline business - sheldon brown's page seems overly complicated. At the moment on my singlespeed the freewheel is further from the centre line of the bike than the chainring. It's noisy (well, not silent!), and pisses me off big time because i can't have my chain as tight as i'd like.

Any ideas to get it straight? I'm not sure if it's possible to simply put spacers between the chainring and spider, I need to have another look later on. I've got Bontrager GXP cranks.

Tom

They give quite a bumpy ride on the road then? or not?

I've got Mavic CXP22s at the moment, and the eyelets aren't flush with the rim, they come away either side of the rim where it's profiled. It bugs me for some reason, and the spoke tension isn't even that high :-/

Thinking about getting some deep v rims... they look so good, plus I want to go fixed as opposed to just singlespeed at the moment on my Cotic Roadrat.

Anyone else here use them? Do they build up to a nice solid wheel? I'll probably use them with surly hubs, i'd like phil wood ones but they are just way too expensive :(

Tom