Crank Runout
Thread Starter
|
Stellar HDF Member
Joined: Apr 2009
Posts: 3,039
Likes: 11
From: Northern Ontario
Crank Runout
Trying to help out my buddy he has what appears to be a shake when letting off the throttle. The bike is a 1985 flht with quite a few miles on it. He had someone replace the belt on the bike and he had found that the comp nut was quite tight and had to use a 2 foot pipe on the end of a large ratchet and socket so took a bit to ease it off.
Couple questions as I have to ask and would be first for me but is it possible to bend a crankshaft by removing the compensator nut with the clutch basket and chain locked used the nylon step tool at the basket end?
He had a guy check the runout on the crank and found it to be .006 thou although I'm not exactly sure where the measurement was done other than it was done on primary side with clutch chain and sprocket removed.
My Softail 1984 to 1999 manual shows:
Flywheels Runout ( @ Rim) to 0.000 - 0.010 inch with a wear limit of 0.015
Runout ( @ Shaft ) 0.000-0.002 and wear limit of .003
Where is Flywheel Runout ( @Rim ) measured and where is Runout ( @ Shaft ) measured ?
Thanks
Couple questions as I have to ask and would be first for me but is it possible to bend a crankshaft by removing the compensator nut with the clutch basket and chain locked used the nylon step tool at the basket end?
He had a guy check the runout on the crank and found it to be .006 thou although I'm not exactly sure where the measurement was done other than it was done on primary side with clutch chain and sprocket removed.
My Softail 1984 to 1999 manual shows:
Flywheels Runout ( @ Rim) to 0.000 - 0.010 inch with a wear limit of 0.015
Runout ( @ Shaft ) 0.000-0.002 and wear limit of .003
Where is Flywheel Runout ( @Rim ) measured and where is Runout ( @ Shaft ) measured ?
Thanks
Last edited by RidemyEVO; Jul 31, 2015 at 05:14 PM.
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
the flywheels are measured at the inside section of the sprocket shaft and the pinion as close to the wheels as possible we like to see .001 but that is not possible sometimes
at the rim if you are .010 you start hitting the insides
at the rim if you are .010 you start hitting the insides
Thread Starter
|
Stellar HDF Member
Joined: Apr 2009
Posts: 3,039
Likes: 11
From: Northern Ontario
Is it possible to bend the primary side of the shaft just by loosening a stubborn comp nut?
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Unlikely that you would do that, them flywheels are pretty tight and the whole set up is designed for you to take a pipe to the comp nut, it's at 160 ft/ibs and Red Loctited.
Shakes and stuff are often motor mounts.
Crank runout can give you some random figures if checking it with the motor assembled, it's best done with the crank on forks or whatever device your engineer uses to check runout.
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Nice to be missed...I have been busy at the day job plus dealing with several major issues all at once....a stalker, having to go through a withdrawal programme caused by my doc keeping me on some nasty prescription meds for waaaaay too long, an ankle rebuild and winter...not that we really get a winter but everything is getting sorted ready for summer
Stellar HDF Member
Joined: Jan 2013
Posts: 2,747
Likes: 419
From: Vermont
Nice to be missed...I have been busy at the day job plus dealing with several major issues all at once....a stalker, having to go through a withdrawal programme caused by my doc keeping me on some nasty prescription meds for waaaaay too long, an ankle rebuild and winter...not that we really get a winter but everything is getting sorted ready for summer
Trending Topics
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Cheers Bro...or "Chur Bro" as they say down here...every good wish helps.
Getting better by the day
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
2 pound ball peen hammer get the stalker off your case - 10 or 15 wacks in jersey is all it takes, then some how they never come into that area again maybe its the street light being dim or something
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Lol!!!