My latest 650b low trail fredmobile for the peanut gallery

[blasdelf]

thanks Fred, I had already told my builder 73 HTA and 60mm fork rake.

What tires are you going to use? That spec was predicated on 650b x 42mm slicks and 54mm knobbies

As far as front center, with 700C wheels and my need for a slack seat tube, My size 12 shoes force me in to a longer top tube to eliminate TCO.

A slacker seat tube should always mean the physical top tube gets longer to keep the wheels in the same place, it'd be very silly to make the actual bike shorter just to preserve a virtual measurement

It's pretty hard to get TCO on a low-trail bike, you'd have to be quite short and be using very big tires