Clonk?

Got a technical query? Found another 0.02bhp? Ask/tell the world.

Moderators: slparry, Gromit, Paul

Onebag
Posts: 38
Joined: Mon Apr 02, 2007 5:09 pm
Location: Scarborough. N.Yorks.
Contact:

Clonk?

Post by Onebag »

Advice please. Recently I've noticed when going over bumps/dips I hear a loud clonk from the back end. Had a good look round, nothing loose, leaking, sagging, scraping, sidestand seems ok. Can't replicate it by bouncing the bike at standstill. Had a look round the Forum, could it be the cat or drive related? Anything I should be worrying about?
Cheers. Glenn.
Harry
Member
Posts: 752
Joined: Fri Feb 20, 2004 10:08 am
Location: Home of the Saints

Post by Harry »

wearing a hole in your hugger?
exhaust seated on the flanges ok?
rear shock bolts tight?
tool kit loose?
Onebag
Posts: 38
Joined: Mon Apr 02, 2007 5:09 pm
Location: Scarborough. N.Yorks.
Contact:

Post by Onebag »

No, yes, yes and no as far as I can tell...
Thanks. Glenn.
User avatar
PBBoxer
Posts: 3211
Joined: Wed Mar 03, 2004 5:41 pm
Location: Yorkshire

Post by PBBoxer »

I had that when my torque arm was either loosely fitted at one end or the other time when te rubber had persihed
1997 CBR1100XXV
1999 CBR1100XX
2009 HP2 Sport
2006 R1200s
2013 R1200RT anniversary
Onebag
Posts: 38
Joined: Mon Apr 02, 2007 5:09 pm
Location: Scarborough. N.Yorks.
Contact:

Post by Onebag »

Torque arm solid enough...
Thanks.
User avatar
Paul
Wanna buy a sticker mister?
Posts: 2906
Joined: Mon Feb 16, 2004 8:44 pm
Location: Boxertrix Towers, Norfolk
Contact:

Post by Paul »

Worn brake pads rattling in the calipers?
You really need only two tools: WD-40 and duct tape. If it doesn't move and it should, use WD-40. If it moves and shouldn't, use the tape.
User avatar
oyster
Posts: 1236
Joined: Fri Jul 02, 2004 1:03 pm
Location: retirementland kent

Post by oyster »

Shagged Showa shock?
Oyster. 1999 R1100S. Almost original.
User avatar
tripe
Posts: 669
Joined: Sat Aug 20, 2005 1:25 pm
Location: West London
Contact:

Post by tripe »

if you have a centrestand and the stop has come off/doesn't have one it will bang on torque arm over bumps?
Onebag
Posts: 38
Joined: Mon Apr 02, 2007 5:09 pm
Location: Scarborough. N.Yorks.
Contact:

Post by Onebag »

Thanks for the suggestions...

Paul:
Don't think so, not that kind of 'clonk'..? It's quite loud, and - maybe my imagination - getting louder?

Oyster:
Maybe? But I can't replicate it at standstill or around <10mph.
I'm taking it a bit cautiously 'til I know what it is, so it's hard to know whether the handling is particularly affected. We had a good (albeit clonky!) run to/from Cadwell today though.

Tripe:
Sidestand only and the stop is fine. No sign of it rubbing against the bellypan either. Had my mates take a look on the ride out today, nothing obvious to them on the move.

:?: Glenn
r550s
Posts: 570
Joined: Sun Apr 18, 2004 9:47 pm
Location: Baaarnsley

Post by r550s »

if you've still got the cat, then it's common for the innards to come loose with age - that'll clonk over bumps.
'Hinterachsge' translates as 'rear axle'.(Not 'Differential', so f*** off)
Me-109
Posts: 863
Joined: Mon Feb 06, 2006 12:13 pm
Location: Trauma Ward

Post by Me-109 »

If you still have the cat then I would not think it possible that the cans have slipped off the mounting posts the way they might do with a y-piece. If you cannot move anything loose by hand, then I would suggest the next most likely thing, given that you mention bumps/dips is that the shock has lost its damping. At a standstill the spring still has enough effect to avoid bottoming out, but pick up the pace and the forces involved allow it to compress and extend at considerable rates with no damping to slow things down.
Onebag
Posts: 38
Joined: Mon Apr 02, 2007 5:09 pm
Location: Scarborough. N.Yorks.
Contact:

Post by Onebag »

Thanks r550s & Me-109. Got the bike booked for a service on the 18th. Let's hope it holds out 'til then... :shock:
I'll let you know the outcome...
Cheers. Glenn
Onebag
Posts: 38
Joined: Mon Apr 02, 2007 5:09 pm
Location: Scarborough. N.Yorks.
Contact:

Post by Onebag »

Mystery clonk... solved!

Just needed a little torque on the frame rail bolts. :D
Image

Thanks for all your help and suggestions!
Cheers. Glenn
Post Reply Previous topicNext topic