i recently noticed that when spinning the crank (tryall isis on fsa plat. pro) that the chainline moves back and forth. upon further inspection i realized that the crank/freewheel was moving back and forth as if it was warped. i was wondering if anyone else has experienced this. i'm not sure if i have a warped bb spindel or warped (or misalligned) isis threads inside the crank. thanks for any info
My echo cranks started doing the exact same thing three days after I put them on. It's just bent on mine, probably from doing four 9 foot drops in two days with no style.
pancho, what did you do after that? can you get em warrantied? mine seem to have come like that because they are practically brand new. or do i have to live with it?
Yo Cam, that is just the nature of freewheels. They have the slight wobble action to them. It's not your cranks or bottom bracket or brain playing tricks on you. It just due to the fact that the driver body (inside of the freewheel) rests at a slight angle due to the threads of the cranks, when compared with the bash ring. When the teeth rotate around the driver body that angle causes the teeth to translate slightly in the z plane, giving you a "wobble".
yep, mine does so to. speaking of freewheels, my echo one skipped three times tonight and is making bad sounds. i have only had it for a week.
speaking of freewheels, my new White Industries trials FW is cranking along with zero problems. have had it for almost two weeks. (well, on the bike anyway)
the wobble isn't really a wobble. It just that all freewheel's rest at a super slight angle when screwed on the cranks. When the cranks rotate, the "wobble" look is due to this slight angle. If you don't have the wobble those are some crazy threads on your cranks.
