Originally Posted by
Darth Lefty
With the captain's a little ahead... might be on purpose.
That no-crank spider has got to be either custom or a rare part. I recall seeing one that was on a Bike-E tandem recumbent that was for sale around here last year, but it was more recent Shimano I think. And what does it have for spiders on the timing chain?
It's pretty easy to make them:
1. Take one TA crankarm and saw off most of it.
2. Bolt the remnant to a bottom bracket spindle.
3. Chuck the BB spindle in a metal-turning lathe.
4. Round off what's left.
5. Polish to your heart's content.