Wanted 45 or 52 tooth chain ring, w ramps and pins 130mm

[Lister Farrar]

Alex had a nasty chain jam at walla walla with an old school unramped 45 she is using to get the junior gears with a 12 cassette. It's the conventional road bolt circle ( not compact) so likely very rare. But trying anyway.

[bikehart]

Blackspire has 42, 44 and 46 tooth with ramps and pins online...
http://www.blackspire.com/SuperPro-Cycl ... Chainrings

They are in Delta so it might be worth giving them a call.

Hugh

[Lister Farrar]

Thanks Hugh. Good source to know about.

But I'm pretty sure she needs the 45t to make the roll-out rule.

L

[Lister Farrar]

Called blackspire, and though very nice there, they don't make a ramped 45 and don't plan to. Didn't bite when i suggested custom ones. No ideas where else to get. Back to the drawing board.

[Lister Farrar]

Giving up on a 45, how about a 52 with ramps and pins?

Hers is a 53 which puts her over the limit, or well under it on a 15 t cog. Maybe a trade if 1 tooth doens't matter to you?