need a 42t single speed chainset and bb

Posted on Mon 1st, May 2017

• #1

jonny

Silver or black. nothing fancy but half decent please. to complete a build for a friend
• #2

Scilly.Suffolk
Touched by the hand of god! Well, Mike Burrows...
- DA 7402: some heel rub but nothing excessive.
- Shimano 42t 'ring: "shark's tooth" wear but this is from when it was run in a double, so reversed to suit the outer position it's unworn.
- Token British threaded, 103mm BB: TT miles only!
- Allen key crank bolts.
- No chainring bolts.
Mike Burrows? I had him shorten them for TT action and they're now 150mm!

1 Attachment
• #3

jonny

awesome. 150 mm though. that is too short I reckon for a daily rig.

love this though. someone should snap these up if they are struggling with toe overlap
• #4

Scilly.Suffolk in reply to @jonny

too short I reckon for a daily rig

Obviously the research is being done at the racier end of the spectrum, but notable benefits that are transferable to promuting are the reduced footspeed (for the same cadence) and greater efficiency (less oxygen burned for the same power).

https://www.cervelo.com/en/engineering-field-notes/a-new-spin-on-crank-length
http://www.bhpc.org.uk/short-and-sweet-a-discussion-on-crank-length-by-mike-burrows.aspx
http://www.cobbcycling.com/crank-length-coming-full-circle/
• #5

jonny in reply to @Scilly.Suffolk

got you with that final sentence dude.

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