Just checked crank runout on the bike over the weekend, Faaaark couldn't believe what the dial gauge was telling me. 0.07mm out which equates to about 0.0028" and andrews recommends no more than 0.003". I was going to put gear drives in it but now going towards the hydrachain setup. As bike has only 16000 Km on it this came as real shock to me so if anybody is planning on going geardrives, for the sake of a cam cover gasket & a couple of hours of your time it is worth checking, glad I did now I can go off & order my 37N camshafts

hi,  sorry to hear that ,  do you give the bike a hard time or not smooth on the throttle ?  as 0.028" is a lot of run-out  that means that  the crank mains  is about several + thou out  , not a good sign maybe have to fix crank,   cheers

hi, i read that number wrong  sorry i though it read 28 thou , 0.0028" at the  cam cover end of  the pinion shaft  is within spec , sorry i stuff-up  on the number ,  cheers

hi, on crank run-out , if you have about 0.002" to 0.003" run-out  with the motor stopped, what do you think it could be  @ 4,000 to 6500 RPM ,     as e.g. the older style shovel & evo + sporty 3 & 5 piece  cranks  with there tapered crank pins  & shafts set-up .   i think the pinion shaft bush in the cam cover  would be under a lot of hard work ,     the t.cam later crank  with the straight crank pin is stronger  but at 6,500 RPM i hate to think  whats going on down stairs ,       the cam plate must be under a lot a stress as e,g you can set the squish shelf up at 0.20" but you can't rev it up when cold  have the piston hit the head ,    or have no carbon build up on  the piston crown of squish area , but the  head will grow away  from the piston crown , with opp temp or heat expansion from the barrel , evo's can grow up to 0.020" to 0.040 "  in deck height   they say,  there is a differance from on the bench to on the bike ,      the harley spec  is just a spec to keep within limits  but would be outerlimits at speed ,      i will be doing 6,500 + rev's  in every gear this weekend,   the good thing it's not my bike  , cheers

hi, the reason i put as & e.g. ref against the early cranks is not a great deal  has changed  , there better materials, & fatter than early  & have gone to a 3 piece crank comparied with the early 5 piece , but it's still the same concept as from about 1916 or so ,   knife & fork rod's with big dia  flywheels  ,  

out rigger bearing mains support  is for sure the way  for less flex, + the pri side is not the best  as the drive sprocket   is to far from the l/hand main bearing  with the alt & rotor  + compensator  in between  if the alt & rotor   was on the out side  of the drive sprocket with  a bearing shaft  support  + no compensator  the drive sprocket would be a lot closer to the l/h main  for less  crank flex ,

the compensator could be swap to a cush drive in the clutch or rear wheel but as harley is we are not realy to be riding them like we do,   so modified &  riding them hard is pushing a very old design beyond there limits, last wed nite on the way to the drags  i blew off a honda blackbird  on this dyna  it was bye  bye  blackbird  bye bye he was shocked  ? . at the drags  she went  11.2 & 122 mph  & i rode her there & back , not in the back of a ute like a cattledog .  the pour crank is stock late model ,     cheers

hi. hey what did  god say to harley davidson ,?  don't do too  much untill i get back,    lol