Well I've got bikeCad Pro which allows me to put in all the demesions and lets me mess with the scale but when I don't have a remotely close size to work off of my scale is just too small or too big.
I'm trying to build a 1911 Indian motorcycle bicycle frame from thin air and can't for the life of me find a single dimension for the thing. I've found the repop schwinn springer forks online and called for the specs but am still having trouble working out the headset angle and seat angle that...