Judder/snatch from drivetrain

Judder/snatch from drivetrain

Author
Discussion

Biker9090

Original Poster:

1,135 posts

44 months

Monday 29th July
quotequote all
I'm noticing a juddering/snatch on my CBF500 when accelerating hard in 1st. Not so noticeable in the other gears or if I'm REALLY smooth with the clutch.

It's almost as if when it's 3/4 the way through engaging it snaps tension/engages fully - you can feel it in the rear wheel.

Its not slipping snd the wheel isn't spinning up.

The chain and sprockets have less than 1500 miles on them and the problem was there prior.

Adjusting tension makes no difference.

Clutch itself was changed circa 15,000 miles ago. I've tried adjusting it via the cable and still the same issue.

No other issues with changing.

It has the notorious CB500 clutch basket rattle. Just about to hit 80k miles.

Any ideas? It's more annoying than anything.

FazerBoy

974 posts

157 months

Monday 29th July
quotequote all
Could it be the cush drive?

Krikkit

26,995 posts

188 months

Monday 29th July
quotequote all
FazerBoy said:
Could it be the cush drive?
I'd say it sounds like it, especially on 80k

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
I did try and jiggle the hub carrier around a bit. Got maybe 4 or 5mm movement on it by hand?

Krikkit

26,995 posts

188 months

Tuesday 30th July
quotequote all
Biker9090 said:
I did try and jiggle the hub carrier around a bit. Got maybe 4 or 5mm movement on it by hand?
Sounds knackered then

Steve Bass

10,364 posts

240 months

Tuesday 30th July
quotequote all
Biker9090 said:
I did try and jiggle the hub carrier around a bit. Got maybe 4 or 5mm movement on it by hand?
Cush drive rubbers have had it, especially with 80k on the clock.
Sprocket carrier should be snug in the hub, no play by hand. So 4 or 5mm movement is definitely not good.

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
Thanks.

Couldn't find any references to a service limit so that must be it.

Looks like I'll have to pack it as no longer available....

Krikkit

26,995 posts

188 months

Tuesday 30th July
quotequote all
Plenty of new ones listed on eBay assuming yours is a 2004-2008 bike?

https://www.ebay.co.uk/sch/i.html?_from=R40&_t...

And a few lightly used sprocket carriers with them too, should be able to make something work

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
Can't find any new ones unfortunately.

Getting bloody annoying finding specific parts for this now. Managed to source a centrestand for £30 last week but all the springs are unavailable.

Hearing I can pack out the space with innertube or aluminium plate if I can't get a set to work?

I was convinced it was the clutch as I've never had an issue with cush drives before......

fred bloggs

1,354 posts

207 months

Tuesday 30th July
quotequote all
Biker9090 said:
Thanks.

Couldn't find any references to a service limit so that must be it.

Looks like I'll have to pack it as no longer available....
It must be availible. Try hi-level, or the likes

Hungrymc

6,870 posts

144 months

Tuesday 30th July
quotequote all
Could this be a notched clutch basket ?
Is a Cush drive is more obvious when going on and off the throttle with the clutch fully engaged ?

Krikkit

26,995 posts

188 months

Tuesday 30th July
quotequote all
Biker9090 said:
Can't find any new ones unfortunately.
Give us your year etc, maybe our google fu is luckier today!

Alternatively you could pack it out, or cast a new one with poly resin - you can buy PU resin pretty cheaply and it'd be an easy enough job

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
2006 CBF500 ABS

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
Hungrymc said:
Could this be a notched clutch basket ?
Is a Cush drive is more obvious when going on and off the throttle with the clutch fully engaged ?
It is quite snatchy on the throttle I will say. It just feels as though it's coming from the rear and almost akin to chain tightening it's tension.

TheInternet

4,928 posts

170 months

Tuesday 30th July
quotequote all
Biker9090 said:
2006 CBF500 ABS
That any good?
https://www.davidsilverspares.co.uk/CBF500A6-ABS-2...

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
TheInternet said:
Ahhhh. Thank you

Potentially, albeit different part number from fowlers? I'll email them!

TheInternet

4,928 posts

170 months

Tuesday 30th July
quotequote all
Oh. Maybe it's compatible? Might be worth trying even if you have to return it.

Busa mav

2,692 posts

161 months

Tuesday 30th July
quotequote all
Just get an old cycle inner tube and cut to suit .

Biker9090

Original Poster:

1,135 posts

44 months

Tuesday 30th July
quotequote all
Put it in gear and rocked it back and forth. Reasonable amount of movement there.

David Silvers confirmed they added the wrong info on that one - it's for the 600.

Managed to find another set on ebay secondhand that look OK......

Krikkit

26,995 posts

188 months

Tuesday 30th July
quotequote all
Biker9090 said:
2006 CBF500 ABS
From my eBay link earlier:

https://www.ebay.co.uk/itm/134532838071
https://www.ebay.co.uk/itm/134502709591