Tom: With 11 tooth cog you can't go fast enough on the downhill??
365 # of muscle mass hurtling down the slope?
Just how the hell fast do you want to go?
At 40mph downhill with my wife on the back seat we were sorta coasting in 52
x14 albeit 700 C wheels and she was beseeching me to slow down as she was in
the white knuckle zone.
Sounds like X-Games Adams! WOW!
Ted Ernst
Palos Verdes Estates
CA USA
> Just got back from PEI Canada, where lots of time on crushed stone bike
> trails made we wish for much fatter tires/ wheels on the tandem. Anyone
> know of a source for fairly modern, 40 or 48 hole drilled 650b rims for a
> new tandem project? The Rigida Sphinx is available in 36 hole, Velocity
> Synergy in 32. Given a team weight of 365 plus pounds (mostly me, my
> stoker weighs a whispy 125 pounds), a 36 hole rear rim would make me
> nervous. Should I worry? I know a smaller diameter wheel is stronger,
> and 650b tires tend to be big and puffy, but still a 40 hole rim would be
> a comfort. If I can't find a rim, alternative is to go with a 26 inch MTB
> rim (Sun rims like the CR 18 and Rhyno lite available in 40/48 holes), but
> that makes it hard to get a high enough gear on the downhills.
> Suggestions/advice appreciated. Frame will be KOF fillet brazed, with
> Brooks saddles, so on topic, I hope!
>
> Tom Adams, Shrewsbury NJ
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