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       KAWASAKI KH & S SERIES FORUM Forum Index -> KH250/400 chat
BIG AL

Is it my crank whats goosed


well i have been out on the kh400 tonight , after I put some new steering head bearings in because i had issues with it not turning in right, that all seems to be ok now, turns in really good but my other main issue is that as all you gurus know is the vibration on the front , konky as said its the crank whats fooked but its not on acceleration its on decceleration took it gently up to 70 as i am still running it in and it feels ok not planted to the ground like the 250, a bit bouncy in fact but as soon as you take the throttle off the vibration at the front is noticeable it more a up and down motion not a side to side

could it be the crank ??? as i have said I would have thought it would be have been the crank on acceleration not decceleration

cheers
Al
simonh

even when i rode my bike for 20 miles with a broken left hand big end, it didnt vibrate, just a load of noise

dunno mate, but i dont think its the crank
kas750

I reckon theres summet loose.Engine bolt,rotor etc......
steve f

i will give £50 more than konky has offered    
simonh

kas750 wrote:
I reckon theres summet loose.Engine bolt,rotor etc......
me too, but i was trying to think of what before i posted.

maybe even something in the final drive, gearbox/clutch/chain alignment (tightness) espcially as it only happens when youre decelerating - ie when the roads turning the engine
BIG AL

swapped the front wheel today with the 250 , then family turned up so i could'nt get chance to take it out this evening 'Bollocks'

anyway after inspecting the wheel which i took of i noticed that the beading ring that grab the rim  are not even displaced all way round and where its weighted the were no bead rings showing

i took it up to my local bikers shop and they re set the tyre on the rim i dont know if this is where my problem is   ???

but will be able to tell when i take the 400 out tomorrow with the 250 wheel on
Heres hoping

cheers Al
The Wolfman

An uneven tyre will certainly shake your fillings out (especially at the front), but you said that it had been fitted properly in an earlier post...
simonh

someone may need a hefty clout
BIG AL

Gra,

you would expect a fookin bike tyre fitter to fit a bloody tyre on properly wouldnt you, thats why i didnt fit it myself  
Its not dead certain that this is the problem but hope it is might do anice little run up to yours after all

cheers

Al
The Wolfman

I've done enough gardening now so feel free mate, just gimme a ring first.
BIG AL

well it was the front wheel, all that pissing around tighten nuts and bolts up even more

took the 400 out sat evening goes ok but needs the carbs setting correctly  but other than that sorted, will put the 400 front wheel back on and see if its now ok as its still got the 250 front wheel on at the moment

just did 30 miles on her and the gears feels really smooth ,nice and positive and clicks in really well  not like the 250 where i seem to get a lot of false neutrals

just cant wait to get her run in , then i can give it some

thanks for all your helps guys

graham couldnt make it today,got to do loads of odd jobs around the house and keep the missus happy

cheers
Al
steve f

whats the front wheel to do with the crank ??????????
The Wolfman

After all that buggering about, at least you go to the bottom of it, I waited ALL DAY for you mate and eventually went out for a ride meself and called in at Gary and Jo's on the way round, Ray also turned up.

BIG AL wrote:
.... and keep the missus happy


Does Jo mind you telling us these things?...
The Wolfman

did you ring me because I said I had waited all day?? only jokin'!    
simonh

steve f wrote:
whats the front wheel to do with the crank ??????????
aint that the truth
simonh

simonh wrote:
someone may need a hefty clout
glad its sorted mate, but me and simon told you about twenty years ago to change the front end  to isolate the problem, you bloody assclown
kas750

simonh wrote:
simonh wrote:
someone may need a hefty clout
glad its sorted mate, but me and simon told you about twenty years ago to change the front end  to isolate the problem, you bloody assclown

Problem is people always want to go for complicated solutions rather than just checking the simple things first......glad it sorted Al,but don't give up your day job

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