Round two:
Are F model front discs much stronger than K model front discs? Reason I ask is the chopper brakes are pitiful. It has an early K model caliper which has alot smaller piston then the F's use. Same m/c on both bikes. On my F you can just barely squueze the lever and you cannot roll the bike by hand. On the K you have to hit about half lever travel before you can no longer roll the bike.
That was the original phantom question
But I got the chopper running tonight ( not well) and took it down the driveway and back. Thats a little over a mile,down and back. The front brake does seem to impair forward travel,but thats about it. If it was the only brake on the bike I would def wreck and die. So,sorry for the question,looks like I need to do some work.