Pair of 6-day bikes on the bay
 

Whats with the relaxed seat angles on these bikes? Maybe built for a specific track? I dont think I've seen anything like them before.

http://www.ebay.com/itm/Pair-vintage...#ht_500wt_1202

http://i.ebayimg.com/t/Pair-vintage-...0+Q~~60_58.JPG

I think its to make the chain stay super short. I *think*

It does not do that. Think about the geometry of it for a moment
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Rider or coach preference. Genreally a big set back will help a big gear guy, or a guy with a long femur.
If they are truly "six day" bikes. they are probably from one rider of a team and one who would not be the "sprinter" of the team, but a guy who set the sprinter up.
More weight aft might help when throwing a teammate in to the frey, I have to think about that, the rider slinging or throwing the sprinter in will have his mass aft of the guy he is throwing in sooner, might help.

My thought was perhaps they were built for a super short track where you are almost always in a turn. Maybe then the centrifugal force doesnt jam you into the bars. So by sitting back it relieves the pressure on your arms. Interesting anyway. I'd love to see what one of those rides like, and take it into a banking really fast.

Torchy Pedan's bike, 1930's. Maybe the ebay bikes are older than their components?
http://1.bp.blogspot.com/-dZhPU8z1me...6eb98477_z.jpg

Ends early on Sunday morning. Worth skipping church....

Perhaps, the older frames with slack angles sometimes had a gallows seatpost that could set the rider over the cranks even with a slack geometry. I've got a vintage 1910'ish frame with a 21" seat tube and a 24" top tube :eek:

This is what I was thinking. Back in the heyday of the sport, these guys spent countless hours sitting up, reading a paper and steering with one foot. Relaxed angles were "de rigeur" and most of the bikes from the thirties were built this way.

I think they were in the appraisal threads a month or so ago. Beautiful bikes