Flippin' 'eck it's a lot of work to get to it.
As part of The Great Sort Out, I've got around to starting to fit the replacement gearbox I got for the ex-Turby GS.
Simon Wilson <siwilson@nodamnspamn.hotmail.com> wrote:
As part of The Great Sort Out, I've got around to starting to fit the
replacement gearbox I got for the ex-Turby GS.
What went wrong with the original gearbox? I didn't think that bike
had done immense mileage or suffered from neglect/abuse.
Is it common for these to fail or was this a bit of an outlier?
On 11/01/2026 15:30, Mark Olson wrote:
Simon Wilson <siwilson@nodamnspamn.hotmail.com> wrote:
As part of The Great Sort Out, I've got around to starting to fit the
replacement gearbox I got for the ex-Turby GS.
What went wrong with the original gearbox? I didn't think that bike
had done immense mileage or suffered from neglect/abuse.
Is it common for these to fail or was this a bit of an outlier?
It's done ~70K miles, so not huge. I've just finished removing the
gearbox and clutch.
Clutch friction plate is still in spec. (just).
Balancer shaft oil seal is leaking quite badly (common problem).
It's got a loud, annoying, rattle when in neutral and the clutch is out.
On 11/01/2026 15:30, Mark Olson wrote:
Simon Wilson <siwilson@nodamnspamn.hotmail.com> wrote:
As part of The Great Sort Out, I've got around to starting to fit the
replacement gearbox I got for the ex-Turby GS.
What went wrong with the original gearbox? I didn't think that bike
had done immense mileage or suffered from neglect/abuse.
Is it common for these to fail or was this a bit of an outlier?
It's done ~70K miles, so not huge. I've just finished removing the
gearbox and clutch.
Clutch friction plate is still in spec. (just).
Balancer shaft oil seal is leaking quite badly (common problem).
It's got a loud, annoying, rattle when in neutral and the clutch is out. Common issue on the 2008 models, I *think* it's the internal input shaft shock absorber/cush drive. This little, expensive, bugger: https:// www.advrider.com/f/attachments/input-shaft-jpg.5428667/
On 11/01/2026 16:59, Simon Wilson wrote:Some Guzzis also rattle but conversely, when when the clutch is pulled
It's got a loud, annoying, rattle when in neutral and the clutch is out.
It's a Ducati :-)
It doesn't look centred, which suggests that the spring is broken or something's shifted or the cush thrust bearing has worn badly.
I'll be thoroughly inspecting my shaft later on today, once I've whippedFnaar.
it out.
As part of The Great Sort Out, I've got around to starting to fit the replacement gearbox I got for the ex-Turby GS.
Flippin' 'eck it's a lot of work to get to it. I've pretty much undone everything, untangled all the loom etc. to split the bike in two.
It's ll factory as far as I can tell - no-one's been in there already,
not bad for a ~20 year old bike.
Decided to stop for today as it hasn't easily separated so I'll double
check tomorrow I haven't missed anything.
I can see why it's a cost prohibitive job to have done at a dealer. I
think putting it back together is going to take quite a long time.
On 10/01/2026 20:35, Simon Wilson wrote:
As part of The Great Sort Out, I've got around to starting to fit the
replacement gearbox I got for the ex-Turby GS.
Flippin' 'eck it's a lot of work to get to it. I've pretty much undone
everything, untangled all the loom etc. to split the bike in two.
It's ll factory as far as I can tell - no-one's been in there already,
not bad for a ~20 year old bike.
Decided to stop for today as it hasn't easily separated so I'll double
check tomorrow I haven't missed anything.
I can see why it's a cost prohibitive job to have done at a dealer. I
think putting it back together is going to take quite a long time.
I've got the original gearbox apart and the shock absorber shaft seems
in good condition, the tabs holding the spring in compression are all
fine. So maybe it's just a trait of these gearboxes they are noisy in neutral. There does seem to be quite a lot of backlash between the input drive shaft and the gear it engages with.
Do I swap the gearbox out for the unknown quantity replacement I have
for it, or just put the original one back in? Hmmmm choices.
At least the job will not have been a waste of time as the balancer
shaft seal and clutch plate definitely needed replacing.
On Mon, 12 Jan 2026 10:31:53 +0000, Simon Wilson ><siwilson@nodamnspamn.hotmail.com> wrote:
I'll be thoroughly inspecting my shaft later on today, once I've whipped >>it out.
Fnaar.
https://www.youtube.com/watch?v=pelfWEEwseQ
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