96 900ss/cr - upgrade from 4.5 to 5.5 rear rim - Page 2 - Ducati.ms - The Ultimate Ducati Forum
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post #11 of 43 (permalink) Old Jun 30th, 2012, 1:13 pm
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Hey guys,

Got a 750 SSie and had a misshap with the local tire shop who ended up offering to pay for a "new" rear rim. I eventually found a brand new 5.5 rim for the >99 900 series on ebay for 200 Euros + shipping and went for it so now it's kinda to late.. Realized the 160/60 is to small so I've ordered a 170/60. Really do not want to loose agility but with the extra rim weight I suppose I lost anyways.

So now I'm anticipating the delivery guys within a week or two and am concerned about the "bolt on" match.

Basically it seems my options are:

a. flip the front sprocket and adjust the chain guide

b. use a conical spacer "if I don't have one already" When I removed the rear tire there was a conical spacer inbetween the sprocket and the rim bairings. Just reuse this and I'll have no issues? Or add a spacer to the rear wheel which would offset (uncenter) the wheel to the right??

Also read somewhere that the cush drive and spacer for the 4.5 and 5.5 differ, should I go looking for the 5.5 setup or will I be fine with what I've got?

Current: Silver grey ´00 ST4, '86 Suzuki Madura
Past: Yellow but not chicken '00 750SS, '87 Yamaha FZX

Last edited by Nikke; Jun 30th, 2012 at 2:08 pm.
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post #12 of 43 (permalink) Old Jul 20th, 2017, 3:32 pm
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Quote:
Originally Posted by catilover View Post
as above, spacer is all you need to align up the chain, i swapped my 4.5 for a 5.5 no props.
Would you happen to know the part number for that?

Cheers
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post #13 of 43 (permalink) Old Jul 25th, 2017, 7:31 am
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My '96 SS CR came to me with steel swing arm and 5.5 wheel. I find the 180 tires to be cheaper and more plentiful than 170's.
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post #14 of 43 (permalink) Old Jul 25th, 2017, 10:37 am
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OEM wheel assembly is the same regardless of the wheel width or swingarm material. If you already have a functioning bike you have everything you need to swap wheel widths or swingarm types. The only thing you need to do is flip the front sprocket around to align the chain correctly; biased to the inside for the 4.5" rim, biased to the outside for the 5.5" rim.
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post #15 of 43 (permalink) Old Jul 25th, 2017, 7:55 pm
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Never heard about flipping the front sprocket. I just measured the width on my 4.5 and spare 5.5 rim.
There is no difference in hub widths. (approx 6 1/8")back of disk to outer cush hub rubber.

95CR. front tire 120/70/17, Rear 180/55/17 speedometer ten MPH higher.

Front sprocket flat both sides , i see no way flipping it will make a difference.
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post #16 of 43 (permalink) Old Jul 25th, 2017, 8:06 pm
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5.5 rear rim.....

Sent you a PM....

Fred

1996 SS/SP B52 40k miles
MBP collets / 748 front rotors / 4.5" rear wheel / Sharkskins / Nichols frame bolts
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post #17 of 43 (permalink) Old Jul 26th, 2017, 4:52 am
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Quote:
Originally Posted by 450RT View Post
Never heard about flipping the front sprocket. I just measured the width on my 4.5 and spare 5.5 rim.
There is no difference in hub widths. (approx 6 1/8")back of disk to outer cush hub rubber.

95CR. front tire 120/70/17, Rear 180/55/17 speedometer ten MPH higher.

Front sprocket flat both sides , i see no way flipping it will make a difference.
The front sprocket should have a protrusion on one side, about 1.5 CM or so. See attached photo.

Take a look at the parts diagrams, the only part number differences showing are the wheel itself, all the other parts are shared across all models.
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post #18 of 43 (permalink) Old Jul 26th, 2017, 9:14 pm
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Ok I see the offset now. So your picture shows offset for a 4.5" rim ?

So spacing on the SP swing arm is is different than the steel CR swing arm.
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post #19 of 43 (permalink) Old Jul 27th, 2017, 11:05 am
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swingarm spacing is the same. the sprocket carrier is often different. With the 4.5 wheel and the rear sprocket closer to the centerline of the bike you have the front sprocket protrusion facing out. When using a 5.5" the front sprocket is flipped with the protrusion facing in.

IIRC the 750 and 900cr carriers are the same, later models (monsters SS?) the factory started using the same carrier on all but different cone spacers to center the wheels.
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post #20 of 43 (permalink) Old Jul 27th, 2017, 11:23 am
 
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Quote:
Originally Posted by catilover View Post
haha the fat cati!!

no with a 180 rear you get more tread on the sides when leaning so have more grip my theory anyway haha plus it looks better :P :P :P :P :P
I have tried a 180 rear and a 170 rear on my ST4 and much prefer the 170. The bike turns quicker and easier with the narrower tire.

Mike
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