Forks Clunking
-
- Avgas Sniffer
- Posts: 2120
- Joined: Sat Jun 09, 2007 10:10 am
- Location: Pig on the wall country
Forks Clunking
The KR1S forks are clunking on my Hybrid
It's not the brakes as I put the front wheel against a post and pushed down
Also put fingers on headstock and rocked it backwards and forwards but couldn't detect any play
Bushes didn't have signs of wear when I fitted them but they were the ones that came with the forks
Sounds like it is coming from the upper forks or headstock though,unless the sound is travelling?
Got me stumped
It's not the brakes as I put the front wheel against a post and pushed down
Also put fingers on headstock and rocked it backwards and forwards but couldn't detect any play
Bushes didn't have signs of wear when I fitted them but they were the ones that came with the forks
Sounds like it is coming from the upper forks or headstock though,unless the sound is travelling?
Got me stumped
Can it yer old boiler
- JanBros
- Avgas Sniffer
- Posts: 3306
- Joined: Wed Jul 26, 2006 11:50 pm
- Location: the land of Francorchamps
Re: Forks Clunking
worn bushings inside the forks ?
My ultimate goal is to die young as late as possible !
-
- Avgas Sniffer
- Posts: 3926
- Joined: Fri Jun 18, 2010 11:29 am
- Location: Oxfordshire
Re: Forks Clunking
Yes, it sounds like the glide bushes Martin
-
- Avgas Sniffer
- Posts: 2120
- Joined: Sat Jun 09, 2007 10:10 am
- Location: Pig on the wall country
Re: Forks Clunking
Well I was going to take forks off to give the bottoms a blast with my new can of Tough black so will have to take forks apart
The clunk happens right at the beginning of travel if that's any help
Never got my head around the correct level of fork oil as in the air gap with spring out and fork compressed
What do folks do here
The clunk happens right at the beginning of travel if that's any help
Never got my head around the correct level of fork oil as in the air gap with spring out and fork compressed
What do folks do here
Can it yer old boiler
-
- Avgas Sniffer
- Posts: 3926
- Joined: Fri Jun 18, 2010 11:29 am
- Location: Oxfordshire
Re: Forks Clunking
I measure the oil on the KR-1S, 336ml per leg for a straight change, or 396ml if they've had a rebuild.
-
- Avgas Sniffer
- Posts: 2120
- Joined: Sat Jun 09, 2007 10:10 am
- Location: Pig on the wall country
Re: Forks Clunking
Cheers Benjamin but don't yer use the air gap,dipstick method
Can it yer old boiler
-
- Avgas Sniffer
- Posts: 3926
- Joined: Fri Jun 18, 2010 11:29 am
- Location: Oxfordshire
Re: Forks Clunking
Nope, just measure the oil and wack it in
-
- Avgas Sniffer
- Posts: 2120
- Joined: Sat Jun 09, 2007 10:10 am
- Location: Pig on the wall country
Re: Forks Clunking
If I take each fork leg off then would I be able to feel the clunk just pushing one leg down at a time ?
Or is it something you can only feel on the bike because of the weight etc
Or is it something you can only feel on the bike because of the weight etc
Can it yer old boiler
- JanBros
- Avgas Sniffer
- Posts: 3306
- Joined: Wed Jul 26, 2006 11:50 pm
- Location: the land of Francorchamps
Re: Forks Clunking
just take out the wheel , remove the front fender with it's brace and release the springs. now test each fork leg seperatly just like you would test for play on the headstock bearrings.
My ultimate goal is to die young as late as possible !
-
- Avgas Sniffer
- Posts: 2120
- Joined: Sat Jun 09, 2007 10:10 am
- Location: Pig on the wall country
Re: Forks Clunking
Well it's back together !! Not sure if I have cured it
One thing for sure was the state of the fork oil which I guess was 4 years old but not many miles
It's one thing a lot of peeps ignore
One thing for sure was the state of the fork oil which I guess was 4 years old but not many miles
It's one thing a lot of peeps ignore
Can it yer old boiler
-
- Avgas Sniffer
- Posts: 3926
- Joined: Fri Jun 18, 2010 11:29 am
- Location: Oxfordshire
Re: Forks Clunking
It is Martin, that and the rear shock.
- Garry
- Premix Junkie
- Posts: 1436
- Joined: Tue Jul 25, 2006 8:01 pm
- Location: E.Midlands
Re: Forks Clunking
mine does the same thing
think its head bearings
they feel tight - even pass the MOT
think its head bearings
they feel tight - even pass the MOT
Smokings Good For You
-
- Avgas Sniffer
- Posts: 2120
- Joined: Sat Jun 09, 2007 10:10 am
- Location: Pig on the wall country
Re: Forks Clunking
May have got to the bottom of it and I think it was the taper bearing shell that fits in the top of the LC frame,it was a loose fit
I used some bearing Loctite in there so will have to see what happens
I used some bearing Loctite in there so will have to see what happens
Can it yer old boiler
-
- Oil Injector
- Posts: 926
- Joined: Sat Mar 22, 2008 5:42 pm
- Location: retford n,nott`s working in cotswolds
- Contact:
Re: Forks Clunking
easy fix ,if ever the bikes stripped down ish ,if you know any one with oxy acetaline ,with a very oxydising flame ,test on a bit of normal mild steel just till you get like lemonade bubbles ,once the torch is set just do a warm on the inside of the bearing cup at 12 ,6 ,3 and 9 o`clock this will shrink to take up the play ,if not enough ,let it cool ,then go inbetween where youve heated,plastic fantastic filler will always fail ,take a hour or so ,glad you sussed it out