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
Trikes are more complicated than 2-wheelers, but I think you're over-thinking it already. Think about where the chain will go and how you will link the front wheels. I have heard that the head tubes should point at the contact patch and that the trail values you'd want for a 2-wheeler are still valid. Beyond that, cut and braze, man! Oh, and ask in the builder's section when, not if, you mess up. I think the first two or three will be learning experiences.