hi all what method is used to set crank end float, i'm not sure if a main is about to collapse ive got a metalic clank every now and then at tickover ,i checked in the cam box and behind the clutch cover, the only thing i can see wrong is the flywheel moves in and out when running and i'm sure it did'nt before, anyone come across this clank every now and then? 1995 501 :?
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Easy way to check crank end float: get a magnetic base dial indicator they are cheap on ebay or get good mitutoyo one if your fussy.
clamp about 1 foot long piece of 8mm steel strap to your frame in front of the engine with g clamps, set the dial guage up go from there.
sorry I can't say how to set the end float. my engines only 55 hours old so I've not been in yet. It will be on this site somewhere I'm sure.
type "crank end float site:husaberg.org" into google that will show more results there is a huge thread on main bearings too.
clamp about 1 foot long piece of 8mm steel strap to your frame in front of the engine with g clamps, set the dial guage up go from there.
sorry I can't say how to set the end float. my engines only 55 hours old so I've not been in yet. It will be on this site somewhere I'm sure.
type "crank end float site:husaberg.org" into google that will show more results there is a huge thread on main bearings too.
thanks for the reply , i realise that you use a dial gauge, i just wondered if it could be shimmed behind the primary gear , without splitting the box, i have no rumbles and the bearings feel tight , but the crank floats sideways about 3 or 4 mm when its running. maybe i should just bite the bullet and rip it down, i bought the bike recently and i know the engine is a bit of a frankenstein , its supposed to be a 350 but has 535cc on the log book,the stroke and barrel is the same as the 501 ,but i aint got a clue what piston is in there and who originally built it.....ian
Joined Nov 2001
17K Posts | 774+
Ely, England
you must strip the engine ASAP! you have problems sir!
on some bikes the end float is NIL on others there is a small allowance. say .010" - .020" which is .25-0.5mm.
the way i would do it in the bike is to use a dead weight plastic hammer and tap the crank at each end left to right and back. i have a mitutoya vernier and all you need to do is put the 'heel' on the bearing and the bottom of the vernier on the shoulder of the crank. by measuring this at it's extremes you get the float.
it's not rocket science.
regards
Taffy
on some bikes the end float is NIL on others there is a small allowance. say .010" - .020" which is .25-0.5mm.
the way i would do it in the bike is to use a dead weight plastic hammer and tap the crank at each end left to right and back. i have a mitutoya vernier and all you need to do is put the 'heel' on the bearing and the bottom of the vernier on the shoulder of the crank. by measuring this at it's extremes you get the float.
it's not rocket science.
regards
Taffy
agreed , i think a main may have gone south , or who ever built it just crammed it back together without checking the float, and you can push -pull the crank with your hands , i suspect that will be the unfortunate metalic sound i am getting every now and then, you've been around bergs for a while, did the earlier ones suffer badly from duff mains and what bearing would you go for I.E who's brand and what load rating, iv'e read the threads and there are so many different opinions,but if you've found something that works ,it would save me a lot of hastle.
regards
ian
regards
ian
sorry , we seem to be getting off the subject a bit, ok , i know how to check the end float i have done this many times , some bikes , cars , are shimmed to take the float out, others are set when you press the crank together and you measure by assembling the crank into the the cases and reapeating untill you get the required end float,which is a pain in the a***, just wondered if any one had come across the same sort of noise and found it to be a main giving up or a collapsed bearing cage...? what is throwing me a bit is i have loads of end float and no up and down movement in the crank, which suggests the bearings are ok, maybe the bearings were locktighted in place when it was last built and its let go,any way i'm going to strip it and i will let you know the results......ian
ok, got it to bits, it has been loctighted in and the bearings are floating around in the casings!
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