Join Date: Dec 2004
Location: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, homebuilt recumbent
My advice would be that, if you want something that's fast, look to what's being used in racing now and copy/improve on the fastest designs. Or, you can go off in a totally different direction and design something that hasn't been done before but *should* work. A RWD narrow-track tilter* would fit the bill, if you could figure out how to implement it.
1. Narrow track would keep the frontal area low, which is a major problem with most trikes
2. I'm a big-wheel chauvinist, but if you're trying to keep a small frontal area, using rear tires that stick out above your head would be counter-productive.
3. In some instances, fat tires can be faster than skinny, and where they're sheltered behind the rider might be one of those; but 29-er tires aren't generally designed for low rolling resistance.
*The reason tilters are popular is because the track is so narrow that they'd otherwise tip horribly on turns.