chaparral wrote:
jackmott wrote:
They still have a lot more give than a seat tube equipped bike.
That is probably true, but you could always just have have the seat tube mounted to the beam with some compliance. Or even design the seat post with some leaf springs for vertical compliance. I would not be shocked if something like the Felt IA with its elastomers in the seat post would be pretty close to the Dimond.
Keep in mind there is no seat stay on a beam bike and no seat tube. While the seat tube fairs the rear wheel in a conventional superbike, the seat stay causes drag.
Perhaps the fastest would be a bike with a seat tube, but no seat stays by beefing up the chain stays like on a Dimond. Just draw a line from the BB to the seat on the Dimond and fill in behind it with fairing up to the wheel and that is what i am talking about....just leave the seat stays out.