rear wheel cush drive

H

harpmeister

Full member
Location
UK
Hi. Can anyone give me the torque setting for the four 8mm bolts that hold the rear wheel cush drive onto the wheel of a SF1.

Is it just the generic 13 - 18 ft-lbs ( 18 - 25Nm ) or is there a different torque setting for them.

Joe
 
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Always wondered where you could get new Rubber Crush Pucks when they died?
Kept moving them around.

PS: Never let that 1 1/2" (approx) Nut loosen off, or your in for a Bad Day.

The SF with a locked rear hub was one of the 1st motorcycles that allowed you to take off the rear wheel without having to readjust the chain.

You will wear your fingers to the bone polishing them Borrani Rims ;o)

The example is a 70 1/2 - 71 1/2 SF0 with BREV Drums.

Looking at that inverted Mondel Re-Set - NEVER raced a Bike that did not have a Sole.

Andy: Note the Chain - JAP KIWI 0-Ring - Requires some filing clearance in the Output Tranny Cavity to fit.

I sacrificed some light spinning performance with the KIWI compared to changing a 530 Barrel Chain every season; however, that KIWI does loosen up after a season or two and as quick as a barrel chain but will last forever with proper care ;o)
 
I think it was pretty common practice, notably in off road bikes, for the chain drive to stay in place when taking the wheel out.

Paul
 
"The SF with a locked rear hub was one of the 1st motorcycles that allowed you to take off the rear wheel without having to readjust the chain."

where were you in the 40's/50's/60's Ron??? literally hundreds of makers did that!

My 1959 AJS being just one of them, 12 or 13 years earlier

CLEM
 
On the contrary, I'd say the rear drum-braked Laverdas were one of the LAST bikes that had this (almost universal) feature!  Even the most humblest MZ would allow wheel removal without touching the chain. 

Guess the accountants are to blame...

piet
 
Tempted to convert my Triumph legend disc rear hub to that sys - not impossible if you can fit a large ID bearing and find the big thumping threaded insert and nut - but it runs a 20mm axle, so could be tricky. So I think I'll just think about it and build it, get it on the road and ride it instead! :-*
 
Piranha Brother 2 said:
Tempted to convert my Triumph legend disc rear hub to that sys - not impossible if you can fit a large ID bearing and find the big thumping threaded insert and nut - but it runs a 20mm axle, so could be tricky. So I think I'll just think about it and build it, get it on the road and ride it instead! :-*
Click to expand...

Quentin,

I've manged to retain the system on my 3C with Suzuki wheels!  Does limit the size of the inflated rear tyre that can be squeezed through, works fine with the 150 I've been using, but a deflated 170 will pass through as well.

There is enough metal in the cush drive to fit a second bearing, the rest is easy-peasy... :D  I did the conversion mainly because the RGS swingarm I used had already been modified to take the quick removal rear drum brake.  Glad I did, rear wheel changes are now a 3-minute doddle!

Dummy/hollow axle, spacer and nut are readily available.

piet
 
Neither my 67 650 BSA Lightning or my 69 Bonney nor my 71 750 Commando had that set up but my 72 BMW 750S did but it wasn't chain drive ;o)

off road bikes
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Yes perhaps Husqvarna and Benelli but I QUIT riding Off Road as I was too careless for my own good and concentrated on Cafe.

In my time it was Laverda and Ducati that used this design for Cafe on Spoke Borrani Rims with drum brakes. No such thing as Cast Alu-Rims with Disc Brakes back then.

Had a great (approx 74) 2 stroke Suzuki 500 Titan Cafe - BACK THEN and it didn't have a knock off rear wheel either ;o)
 
sfcpiet said:
Quentin,

I've manged to retain the system on my 3C with Suzuki wheels!  Does limit the size of the inflated rear tyre that can be squeezed through, works fine with the 150 I've been using, but a deflated 170 will pass through as well.

There is enough metal in the cush drive to fit a second bearing, the rest is easy-peasy... :D  I did the conversion mainly because the RGS swingarm I used had already been modified to take the quick removal rear drum brake.  Glad I did, rear wheel changes are now a 3-minute doddle!

Dummy/hollow axle, spacer and nut are readily available.

piet
Click to expand...
Nice to know, Piet. I'll have to check that i have sufficient clearance to be able to remove the wheel with the cush assembly in place, otherwise I'll be doing some major work only to discover it all has to come out to remove the wheel anyway  :-\

With the fairly wide rear rotor spacing I'm using I don't have much room to the swingarm, so may not be poss if there's isn't sufficient sideways clearance once the cush rubbers are disengaged. Don't think I'd be able to fit two bearings either, but with a single it would still function the same way it does at the moment, once the axle is bolted up.
 
Apparently their are members in this forum are further advanced then me.

In my opinion there was nothing better then a Chain Drive Knock Off Rear Wheel for Cafe and the SF had it ;o)

Makes me wonder why so many fellow motorcyclist are have issues with this rear drive when it was 2nd nature to me.

Probably because I bought the bike New and experienced it for some 47 years.

 
sfcpiet said:
I've managed to retain the system on my 3C with Suzuki wheels!  Does limit the size of the inflated rear tyre that can be squeezed through, works fine with the 150 I've been using, but a deflated 170 will pass through as well.
Click to expand...

If you want to fit a bigger tyre, you could put a hinge in the other side of the swing-arm so it opens like a garden gate.  :D
 
sfcpiet said:
On the contrary, I'd say the rear drum-braked Laverdas were one of the LAST bikes that had this (almost universal) feature!  Even the most humblest MZ would allow wheel removal without touching the chain. 

Guess the accountants are to blame...

piet
Click to expand...

Back now with the single swingarm bikes.
 
Like what - The BMW F 800.Sturdy rear end that had rear bearing issues that you can FIX - Great Motorcycle.
Should have been a Breganzie !

BMW_F_800_S.jpg

Cruise at over 100mph and get 60+ mpg.
 
such a shame that they didn't make the engine (Rotax)
and maybe didn't build the bike (the Funduro was built/assembled in Italy under subcontract, might have been Aprillia)
CLEM
 
OZ or NZ KTM did up to a 1320cc V-Twin, Canadian Bombardier sponsored - Why because Bombardier owns Rotax built in Bulgaria ?

Guess what a Canadian Mining En-Devour Corp found the biggest strike of Gold in world within the last week in southern OZ.

Wish I had bought penny stocks ;o(

gold-nugget.jpeg


Canadians are about to rape OZ for all their Gold. After all Canadians did supply Wood and Iron for all the Allied forces through WWI and WWII and sacrificed more soldiers then Americans with 1/10th the population.

We got 100rds of thousands of dead soldiers resting in 1000nd's of acres in our fields.

Canadian Foresters, Miners, Railway, Navy, Air Force and Soldiers are some of the best in the world. 

Don't get me wrong lot's of Canadian Ozzies and Kiwi's but it's pay back time.

Scotch HIC! Should have posted in General under "Crush Drive" In respect for Irish Canadians ;o)
 
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