I still have pound on re-bound, but I think Robert Luland, nailed the problem (yrs. back) when he suggested that he and his buddies thought that the smooth surface of hard chromed tubes allowed the tube to rebound on compression too fast (past the honed bushings). He said that the cross-hatching surface of OEM and Forking by Frank would cure the problem.Anyone know what the clearance should be between the fork tubes and the slider bushings?
No I don't know the clearances between the tube and upper and lower bushings, but Robert was right in my opinion. Slick tubes won't help the top-out clunk problem and I sure wish somebody would get the cross-hatched tubes from Frank and apply Roberts theory.
Because fork slamming is driving me nertz.
But here's the continued article on FHP. The search stopped with the last post.
http://flatheadpower.com/tech/viewtopic.php?f=13&t=9750
Synopsis as of 3/23/09:
Nobody's popped for forks from Frank yet. Something as important as this, I would be on the phone asking Frank about the cross-hatch theory and cure this problem, if possible.
If you call him, tell Frank we're using his parts over at http://hydra-glide.com/
http://www.frankmain.qpg.com/