Ducati Monster Forum

Moto Board => Tech => Topic started by: bdfinally on May 15, 2016, 11:51:09 AM



Title: 2000 M750 cush drive
Post by: bdfinally on May 15, 2016, 11:51:09 AM
Anyone know if the cush drives for the 750 stayed the same from 1999 to 2000. Found a used one on fleabay from a 1999.  Appearance is the same. Ducati Omaha parts list only goes back to 2000

As always thanks in advance.


Title: Re: 2000 M750 cush drive
Post by: ducpainter on May 15, 2016, 05:30:56 PM
I don't know for certain...

I'd take the chance as long as the wheel size was the same.


Title: Re: 2000 M750 cush drive
Post by: Speeddog on May 15, 2016, 09:39:51 PM
AFAIK, excluding S*R and later models, the only differences on the cush drives are small axle/big axle and 4.5"/5.5" rim.

So, you should be good to go.


Title: Re: 2000 M750 cush drive
Post by: Nibor on May 16, 2016, 03:24:36 AM
yes they are the same.

between 1999 and 2000, they are two different part numbers, BUT, one was simply superceding the other.

https://amsducati.com/no-longer-available-replaced-by-sku-70090051a (https://amsducati.com/no-longer-available-replaced-by-sku-70090051a)

save the following link, you will love it! parts fische for your bike, (and every other year!)

http://www.millwaysparesonline.com.au/partFinder/model/2315#anchor_component (http://www.millwaysparesonline.com.au/partFinder/model/2315#anchor_component)
it's help me out immensely on my 97 750 build.


Title: Re: 2000 M750 cush drive
Post by: bdfinally on May 16, 2016, 04:09:13 AM
Thanks guys. Story is I was on the way to the MotoAmerica racing on Saturday and my SuperLite Sprocket wallowed out and sheared the pins on the flange off. Ill post pics this evening and see if anyone has a theory on how that happens on a 3 year old sprocket.


Title: Re: 2000 M750 cush drive
Post by: bdfinally on May 16, 2016, 04:39:45 PM
It appears they've re-designed their sprockets since I bought this one about 3 years ago.

(http://i757.photobucket.com/albums/xx213/bddg007/sheared%20cush%20drive%20006.jpg)

the resulting cush drive

(http://i757.photobucket.com/albums/xx213/bddg007/sheared%20cush%20drive%20011.jpg)

I lubed the chain last Thursday prepping for my trip and didn't notice anything amiss.



Title: Re: 2000 M750 cush drive
Post by: Speeddog on May 17, 2016, 05:01:02 PM
The pin-studs thread in from the back side, and are left hand thread.
Occasionally, when removing the nuts to get the sprocket off, the pin-studs will loosen.
If they don't re-tighten when putting the nuts back on, the nuts will come up tight, but the pin-studs will eventually loosen.
Then the power pulses will eventually fatigue off the threaded ends.


Title: Re: 2000 M750 cush drive
Post by: bdfinally on May 18, 2016, 09:48:04 AM
Thanks Dog, that certainly sounds like something I should have caught. Damn expensive lesson learned.


Title: Re: 2000 M750 cush drive
Post by: Speeddog on May 18, 2016, 10:50:19 AM
It's also possible that the shallow counterbore in the sprocket was *slightly* too small, such that the rim on the flange of the nuts was contacting, and thus not staying tight.


Title: Re: 2000 M750 cush drive
Post by: bdfinally on May 18, 2016, 02:07:26 PM
Looks like in the redesign they've done away with the counter bore and it's a lots more stout in that area to boot.

(http://sprocketcenter.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/s/u/superlite_rs8r_sprocket.jpg)


Title: Re: 2000 M750 cush drive
Post by: Speeddog on May 18, 2016, 03:10:12 PM
That's a 5-bolt sprocket, so definitely not for your bike, and it looks like a CAD image to boot.


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