Originally Posted by
Maelochs
Fork length has nothing to do with it.
Make your argument to Empfield. He devised the stack & reach system. He sez:
if you put a different fork on the bike, or a tire that's got a higher profile, you now no longer have the same seat angle on your bike. however, the difference is not typically a lot. having said that, when i was a bike maker and kestrel started selling its EMS fork to OEMs, we used to have to make two different frames: one for our standard steel forks, one to accept the EMS fork, because the distance from the center of the brake hole to the crown race seat was 8mm greater on the EMS fork than was evident on our own fork crowns.