G/S 80 Drive Shaft

[(RIP) maverick]

This morning on my way to work I suddenly felt a vibration through the footpegs. Stopped at the traffic light and when I pulled away just heard this horrible noises coming from what I suspected was the gearbox. Long story short after pushing the bike to a parking spot close to work and spent a good 4 hours awaiting the AA recovery to take me home stripped it and found the following:

I thought monolovers are less prone to break shafts Either way glad the gearbox and final drive oil is clean and free of metal bits

Now is motorworks the best place to source a reconditioned monolever shaft(£200 about as I am sure this one won't be reconditioned ) and how the hell do you split the big spline bit from the rest of the shaft This is my only mode of transport and need to get it back on the road ASAP. If I need a special tool to split the shaft where do I borrow one

Thanks for your kind replies that will hopefully follow

 

[Canuck]

Do you ever get to devon... I have a full rear end off of my ST sitting in the garage doing nothing.. you'd be welcome to borrow it until you can sort your out... it would be a bolt on job!

 

[(RIP) maverick]

Do you ever get to devon... I have a full rear end off of my ST sitting in the garage doing nothing.. you'd be welcome to borrow it until you can sort your out... it's be a bolt on job!

Very tempting but I am the other side of London, thanks for the offer mate really appreciate it. I am trying to avoid a temporary fix as I then tend to never get around finishing it properly then

Just checked the Clymer and there is a special tool to split the shaft, will see if I can sort something out with threaded rod and bits and pieces else I will give Mr Steptoe a call and ask if he can help

 

[Rob Farmer]

Mav,

That drive shaft looks pretty dry, There's supposed to be oil in that swinging arm

Drive shaft failures on the monos are more common than the owners would have you believe. It's just that they don't get ridden as much as paralevers so it seems like they are few and far between

To be honest your going to struggle to get the driveshaft out of the swinging arm. The best way is to hold the whole thing on end in a large vice, with the flared piece of the drive shaft sitting under the bottom of the vice teeth. You will need something to chock the driveshaft into the shaft though to be able to compress the spring.

As you suggest the best things to take it round to Steptoe.

 

[Rob Farmer]

Just grubbing through my spares and I have a driveshaft with no apparent wear. Let me know if you need it. It'll be a lot less than a new one.

 

[(RIP) maverick]

Just grubbing through my spares and I have a driveshaft with no apparent wear. Let me know if you need it. It'll be a lot less than a new one.

Hi Rob,

Will send you a pm tomorrow but yes I will take it! PM me payment details in the mean time. On tapatalk now and it's being silly if I try to send a pm.

Thanks!

 

[mendoje]

...I thought monolovers are less prone to break shafts ...

Dry indeed. And rusty, meaning it hasnt had any oil in it for a long time! No wonder it failed .

 

[(RIP) maverick]

I must admit there was hardly any oil in the mid section, should of checked it but before I knew another 5000 miles passed Anyho as they say school fee's are expensive even if you are 40

 

[judge]

Tut tut tut, very poor maintenance

 

[Canuck]

Tut tut tut, very poor maintenance

And from the first photo... looking like mav was going to try to fix it with packing tape and wood shavings!!!

 

[DrFarkoff]

Anyhow as they say school fee's are expensive even if you are 40

Hardly a truer word spoken! Even if you are older than that!

 

[(RIP) maverick]

And from the first photo... looking like mav was going to try to fix it with packing tape and wood shavings!!!

I will try anything once, suppose I should sweep the shed now and again Of course it was just put down there for the photo opp, the work was done on the immaculate clean paisley garage floor carpet

 

[(RIP) maverick]

The best way is to hold the whole thing on end in a large vice, with the flared piece of the drive shaft sitting under the bottom of the vice teeth. You will need something to chock the driveshaft into the shaft though to be able to compress the spring.

I had a look at this tonight and basically put a socket under the broken universal to prop it up into the housing a bit and fixed it in the vice. I then took two car coil spring compressors and hooked them into the spline section that goes onto the final drive and the other two ends onto the flange that bolts onto the final drive. Slowly turned both nuts until it was compressed and removed the little snap ring that keeps the lot in place. Slowly undid the two bolts and everything came apart

Took me ten minutes to figure out what I was going to use and how and about three minutes to get the shaft out

When I put the lot together again will take some photo's to explain in more detail. I reckon to make the "special tool" is quite easy if you got a decent size offcut of a metal pipe with two flanges welded on which can screw into the swingarm. Then again this is not something you would do very often I suppose.

Interesting exercise and learned something new. NOW do I keep this old shaft for when I want to extend the swingarm by 100mm or not