Gearbox advise please

[MattW]

Thanks for that.
This was one of my major concerns. I don't mind short shifting and utilising the accerelation in the other gears If I continued to use it as is for now.

BUT....

would it cause further more expensive damage by doing so and potentially have a serious failure which could result in a lock up and spit me off?

Eventually it will probably wear the third gear dogs to the point that they can't be salvaged and undercut (a usual part of an M94 rebuild) - assuming they haven't gone too far already? It's pretty unlikely that continuing to let it skip will lead to catastrophic failure but if you leave it too long you run the risk of a bigger repair bill.

However, the rattle you talk about in your first post points to fairly damaged bearings (probably to be expected if you're suffering the 'skip' ). Leaving these too long is a bit of a lottery as they could break up and shed shrapnel into the gearbox potentially buggering the box quite seriously and / or locking it?

Just my take on it - hopefully people who've rebuilt these boxes or had their own done will offer advice.

M

 

[Trullion]

The skipping in third gear also wears the selector fork; you get the infamous 'golden shower' when you drain the gearbox oil (i.e. gold coloured particles in the oil). If you hold the gear lever up after changing gear until the clutch is fully home you may find that it doesn't skip out of third because it is fully engaged. I'm afraid you'll only delay the inevitable; it sounds like the box wants an overhaul (or replacement with a good M97 box).

Regards

 

[Skid]

Thanks Mattw, (and Trullion)

I made a few calls today and found out what sort of money it's going to cost to fix.

In fairness, even after the expenditure, it il still be a good bike at a reasonable price with a decent post 97 box in it. So if I did decide to sell it on at some point in the future, I don't think that I'll lose much, if anything.

Not that I'm planning to do so anytime soon though.

Thanks for all your comments / help guys. Until next time..............

 

[Eugene]

gearbox servie

Thanks Mattw, (and Trullion)

I made a few calls today and found out what sort of money it's going to cost to fix.

In fairness, even after the expenditure, it il still be a good bike at a reasonable price with a decent post 97 box in it. So if I did decide to sell it on at some point in the future, I don't think that I'll lose much, if anything.

Not that I'm planning to do so anytime soon though.

Thanks for all your comments / help guys. Until next time..............

So what does it cost to bring the gearbox to Scrimingers as I'm probably facing that pain soon

 

[Skid]

Hi,

Well, I decided to go down the line of getting a replacement gearbox fitted to mine.

I was quoted about £650 including labour to have one replacement box supplied and fitted (box from Motorworks).

I think I was quoted about £350 to have the original box stripped / recut / reconditioned etc. To that, I would have had to have added the labour / transportation cost of having the box taken out and delivered and then returned and refitted.

As luck would have it, when I decided to takle the plunge, the guy that I entrusted the work to (Russ at Bemers, Gants Hill), had just broken a 99 R11GS with 40k on the clock. I had the box out of that which was sent off for a decent paint job before being fitted.

I also had the clutch plate replaced while the box was out, the paralever bearings adjusted, a minor service, MOT and a new set of Tourances.

All in, it stood me just under a grand. BUT...............the bike is now really sweet with nothing needing doing for at least another year.

I believe that the later boxes go on for years without giving problems and as I'm not a high mileage user, I don't anticipate any further issues.

Sadly, my finances have recently taken a pounding and it's not beyond the realms of possibility that I may have to sell the bike to recoup some much needed funds. I will however, hold off for as long as I possibly can before I have to do so.

Cheers

Skid