Bendy toy
Registered user
I'll be out there tomorrow with a 3mm drill.
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Seized! Driveshaft to Final Drive - only 16K miles
- Thread starter robinsonjoe
- Start date
Bendy toy
Registered user
Another example of bad practice is the gearbox input shaft has no nose bearing into the crankshaft. So the clutch shaft can whip chatter and wear the spines.
I'm sure bike engineers deliberately ignore the design practice everyone else takes for granted.
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I'm sure bike engineers deliberately ignore the design practice everyone else takes for granted.
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Undo the final drive. Pull it off with the drive shaft attached. Remove drive shaft.
robinsonjoe
Registered user
Haha, I am the guy who rang you on Saturday morning and I'll be calling back during the week to agree the date I can get it over to you! So I am going to let you do exactly this
As an aside, pal of mine riding my old bike noticed that on the main stand the rear edhe of the front boot wasnt fitting properly. Only a tiny gap and I thought it would close up as the bike came down onto ist suspension. Anyway, to cut a long story short he decided to replace the boot and in so doing found a cup and a half of water inside the swing arm. He hadnt used a pressure washer.
Rather confirms that the swing arm is vulnerable to water getting in and no doubt causing your problem.
Rather confirms that the swing arm is vulnerable to water getting in and no doubt causing your problem.
This is basically what happened to me with the rear boot. As part of my new service regime I will be dropping the final drive and cleaning everything inside on a regular basis. A bit of extra work at regular intervals might save some grief in the long run. Not sure why a drain hole was never put on these drives.
Mine too. Quite a bit of water in the boot a 1000 miles after work had been done.
Dealer I bought mine from changed the GB shaft seal. 1000 miles later I changed the Fd oil. No drain on mine hence I found water in there.
I put mine back on carefully with lots of silicone grease to help keep it out.
Dealer I bought mine from changed the GB shaft seal. 1000 miles later I changed the Fd oil. No drain on mine hence I found water in there.
I put mine back on carefully with lots of silicone grease to help keep it out.
Stupid crap design for the boot, why BMW did away with the steel bands or zip ties of earlier bike's, I fail to understand
Cost dear boy cost !
Driven by bean counters, who know nowt !!
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Bendy toy
Registered user
My super basic Yamaha shaft drive had a tough boot at the swing arm and a drain hole at the back end. It never had water inside.
There is on the HP2E
Didn't stop this though
To let the water out that better design would have prevented in the first place !!
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Has anyone mentioned Steptoe yet 
Bendy toy
Registered user
Cars have constant velocity joints. They dont accelerate/decelerate twice with every turn, are fully weather sealed and dont fail catastrophically like this.
We'll be told its a cost issue. Really? What about its a bike and bikes don't use car engineering even where its well proven.
We'll be told its a cost issue. Really? What about its a bike and bikes don't use car engineering even where its well proven.
King Key
Registered user
What's the story behind that picture above Bendy?
Shep
Shep of the Dessert
I think its an operating angle thing, cars shafts are generally longer and the suspension travel a lot less.
Shep
Shep of the Dessert
Fair point! Weight perhaps? I dunno!
Cars have constant velocity joints. They dont accelerate/decelerate twice with every turn, are fully weather sealed and dont fail catastrophically like this.
We'll be told its a cost issue. Really? What about its a bike and bikes don't use car engineering even where its well proven.
One of the problems with CV joints is the weight, by design they are massively heavier than a Cardan joint. I'm not sure how you would significantly reduce the size/weight without weakening the joint. I wonder what the bike would feel like with another few kilo's of unsprung weight?
On more than one occasion I have seen the result of the cage breaking and the joint grenading - they do fail catastrophically as they are only fully sealed if the boot is intact....
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