Shaft drive to bevel box oil leak

bikerboy · Post by **bikerboy** » Wed Jun 01, 2016 6:59 am

Me-109 wrote:Good write-up.

Just need to be able to weld and to have stores of suitably-sized scaffold tubing (or similar) to make the necessary tools. And maybe buy an electric impact driver.

Not that I have a shaft-drive to worry about! Ah, the simplicity of chains....

And The Longevity of ShaftDrive!!

Blackal · Post by **Blackal** » Wed Jun 01, 2016 7:25 am

The newer BMW shaft-drives don't appear to have the longevity of the older ones.

Reasons? I suspect that the tripling or quadrupling of horsepower and torque pulses exceed the capabilities.

Chain has its advantages............

Al

The Teutonic Tangerine · Wed Jun 01, 2016 10:52 am

I don't want to be the voice of doom here but when my oil seal went on my 1100 it was because the double bearing for the input shaft had died. I removed the bevel box and took it to a local firm of BMW specialists who charged me about £130 to supply & fit new bearing and oil seal (they had to get the old one pressed out in a hydraulic press - they also re-set the backlash which made the transmission sweeter..

Humbug · Post by **Humbug** » Wed Jun 01, 2016 1:08 pm

Just been to Mike Overy of Overland and Classic to let him look at the final drive on my 1200s which appears to be leaking oil. £400 for a rebuild or £500 if I want the rear drive powder coated again as its a bit bubbly.
He seems to think a rebuild is normal given the 69000 mileage, which makes shaft drive an expensive if convenient option considering the shaft snapped at 60000 at a cost of £545 fitted myself!
Anyone know if any other final drives fit on a 1200S? There are loads of low mileage examples on ebay from other 1200s but no 1200s ones.

bikerboy · Post by **bikerboy** » Mon Jun 13, 2016 4:45 pm

Humbug wrote:Just been to Mike Overy of Overland and Classic to let him look at the final drive on my 1200s which appears to be leaking oil. £400 for a rebuild or £500 if I want the rear drive powder coated again as its a bit bubbly.
He seems to think a rebuild is normal given the 69000 mileage, which makes shaft drive an expensive if convenient option considering the shaft snapped at 60000 at a cost of £545 fitted myself!
Anyone know if any other final drives fit on a 1200S? There are loads of low mileage examples on ebay from other 1200s but no 1200s ones.

or buy a S/H unit!!

dave the german · Post by **dave the german** » Mon Jun 13, 2016 5:45 pm

Last sentence seems to reveal the problem with S/H units

Humbug · Post by **Humbug** » Tue Jun 14, 2016 7:39 pm

Yes, the question was 'do any others fit as there are never any for the 1200S'