B17

Just (I mean just now, ten minutes ago) bought an SR road double crankset off the 'bay, and I need the correct spindle length for 42mm on the OUTSIDE ring. I'm assuming the crank is ISO tapered. The crank is marked "SR Custom" and is 165mm, 144 BCD. Did the search, search wouldn't accept the words "sr" or "BB", so I didn't get any posts that helped. Thanks to anyone who can help here.

Also- is it safe to dremel off the tiny lip that holds the inner ring in place? That might help get said chainline if it's a really close fit next to the chainstays. I don't expect it to be close (track frame, not conversion), but it might.

xthugmurderx

it may not be possible for you to run it on the outside. i don't know what spindle length you need, but you may end up hitting the back of the crankarms against the cups. they don't spin when that happens. just something to look out for.

-jason

brokenrobot

On the SR / Sakae cranks I've got, 116mm provides a road-standard 45mm chainline on the outer ring. But the 116 is asymmetrical, I think. 110 or 112 would be my guess - but it's just a guess!

B17

Thanks to the both of you. I'll try the 110 or a 109.

I hope this works. BTW, I made an error describing the crank- it says "Super Custom", not "SR Custom". It looks a bit like a Sugino 75, if this helps anyone out there I.D. it.

<Tale of woe>

I've been trying to get a nice bike built up for about a year now, to no avail- partially because I lucked into a lugged unknown track frame that just happens to be Italian threaded, and I've been too cheap to spring for the Campagnolo Pista stuff I know would fit it. Even a Miche crank + Chorus BB puts me over my limit right now, and since this crank was 165mm and 144 BCD, I thought I could find inexpensive 1/8" rings a lot more easily than I could with Miche's 135 BCD (I'm trying to use the allegedly stronger 1/8" chain to avoid chain breakage and the 165mm arms to avoid pedal strike). For $50, I didn't think I could go wrong. But I've been going wrong since I got this frame, tho. First, it came with no fork. Took me until recently to find a fork with suitable rake, and it's threadless. But it's straight-bladed, and I love straight-blade lugged forks, so I'll live with it. It takes a 27.0 post, and finding one that was aesthetically compatible with a lugged frame (IOW, silver and not a Thomson or like a Thomson) was another trial. Maybe I'm just snakebitten, I don't know.

</tale of woe>

Bottom line? I just want a really nice bike and I can't afford one, so I'm trying to assemble one that looks like a nicer bike than it is.

BlastRadius

I cut the inner ring lips with a hacksaw. It worked great. As mentioned above, try a 110 or even a 107 although the Shimano ones differ only in the non-drive side being longer.

trons

throw it on someone's bike and measure the chainline and the spindle.