Really, what an astounding noobness regarding how brakes work. Heavy shaking (as hitting a pothole or bump) can distance brake pads from rotor, thus the next braking will have more slack than usual. Race drivers have crashed for this very reason.
Disc brake pad are always in contact with the rotor,even when not touching the lever, they do not retract when bumped or shaken.
air in the line faulty master cyl, or faulty caliper, or possibly a weak bulging brake line could case those symptoms
DOT 5, the silicone type. It's hard to keep track with them switching all over the place. They went to DOT 4 when they started offering ABS on bikes.
Since you have a 2002, I'm sure you're correct. I should have mentioned that it's easy to verify. I believe it's printed on the brake fluid cover on all recently manufactured HD machines.
Last edited by SportyPig; 11-16-2011 at 10:50 PM.
Reason: To once again correct the post to the words I had written. When will this crap be fixed, hdforms????!!!!
I may be wrong but I believe in the case of a true floater brake system the pistons getting pushed back is possible. But in this case on a stock vehicle I don't see it. Just my opinion.