While out on the G9 today my back wheel locked.
The sleeve which adjusts the wheel bearings appears to threaded its self out, spreading the swinging arm apart.
Any suggestion as to why this has happened please?
Thanks
JK
Back wheel lock up
-
- Posts: 42
- Joined: Tue Dec 10, 2002 12:00 am
- Location: PETERBOROUGH UK
- Biscuit
- Deceased
- Posts: 3924
- Joined: Thu Jan 01, 1998 12:00 am
- Location: KENT UK
- Colin F
- Member
- Posts: 936
- Joined: Mon Jan 01, 1990 12:00 am
- Location: NORWICH UK
- Contact:
Back wheel lock up
The common cause of this is misassembly of the rear wheel spacers, one "top hat" which looks like a seal holder should actually be a spacer!
-
- Posts: 42
- Joined: Tue Dec 10, 2002 12:00 am
- Location: PETERBOROUGH UK
Back wheel lock up
Colin,
could you give me some more information?
Is the top hat in question the one at the speedo drive end of the axle?
Is the spacer available from the spares scheme?
I have also heard that there is a miss printed exploded drawing of the wheel assembly which makes me wonder if I have done something wrong?
could you give me some more information?
Is the top hat in question the one at the speedo drive end of the axle?
Is the spacer available from the spares scheme?
I have also heard that there is a miss printed exploded drawing of the wheel assembly which makes me wonder if I have done something wrong?
- Biscuit
- Deceased
- Posts: 3924
- Joined: Thu Jan 01, 1998 12:00 am
- Location: KENT UK
Back wheel lock up
Given the not insubstantial wheel spindle, how has the swinging arm been spread apart?.
-
- Member
- Posts: 21
- Joined: Mon Jan 01, 1990 12:00 am
- Location: OXFORDSHIRE UK
Back wheel lock up
John,
As Alan suggests, I too would be very surprised if it's not the speedo drive. This is a common problem and I've had it occur on my own bike. As the speedo drive starts to seize the cable stops it turning with the back wheel and as the drive is from the bearing adjusting collar, the whole thing unwinds. It then usually proceeds to chew up the threads for the adjusting collar, thus wrecking the hub. If your lucky it will be just the last couple of threads and you may be able to salvage the hub. The answer is then to rebuild with a 'new' speedo drive. Don't buy one from a jumble as it's probably as knackered as the one that caused the problem.
Also, remember to pump a small quantity of grease into the speedo drive on an annual basis. This, hopefully, will stop a re-occurance of the fault.
Regards,
Dave.
As Alan suggests, I too would be very surprised if it's not the speedo drive. This is a common problem and I've had it occur on my own bike. As the speedo drive starts to seize the cable stops it turning with the back wheel and as the drive is from the bearing adjusting collar, the whole thing unwinds. It then usually proceeds to chew up the threads for the adjusting collar, thus wrecking the hub. If your lucky it will be just the last couple of threads and you may be able to salvage the hub. The answer is then to rebuild with a 'new' speedo drive. Don't buy one from a jumble as it's probably as knackered as the one that caused the problem.
Also, remember to pump a small quantity of grease into the speedo drive on an annual basis. This, hopefully, will stop a re-occurance of the fault.
Regards,
Dave.
-
- Member
- Posts: 206
- Joined: Fri Jan 01, 1999 12:00 am
- Location: BERKSHIRE UK
Back wheel lock up
John,
If it is the speedo drive that has locked up and unscrewed the bearing adjusting collar, there is a way to get this re-engineered by having a new collar made with a left hand thread and re-cutting the thread in the hub. Have a word with Malcolm Saggers who advertises in the jampot as I believe he has done this several times. It cleans up the hub thereby saving you sourcing a replacement and ensures the problem does not happen again or that if it does, you can at least get the wheel out of the swinging arm to free everything up.
Regards
Charles
If it is the speedo drive that has locked up and unscrewed the bearing adjusting collar, there is a way to get this re-engineered by having a new collar made with a left hand thread and re-cutting the thread in the hub. Have a word with Malcolm Saggers who advertises in the jampot as I believe he has done this several times. It cleans up the hub thereby saving you sourcing a replacement and ensures the problem does not happen again or that if it does, you can at least get the wheel out of the swinging arm to free everything up.
Regards
Charles
- Merlin
- Member
- Posts: 3683
- Joined: Mon Jan 01, 2001 12:00 am
- Location: BLACKPOOL UK
Back wheel lock up
Sorry to be out of date but been on hols.Silly question I think the problem above is similar to mine will the speedo gearbox listed in the spares list be suitable for my G3LS?[:I]
Chemists do it with test tubes