K11 Owners Group

gpzoduibh · Posted: Fri Feb 08, 2008 8:46 am Post subject: Clutch bits

I pulled the gearbox out of the scorp ( K1 ) and some "bits" fell out of the clutch housing the friction "disc" actually has three double sided "brake pad" pieces at 120 degrees apart , the bits were pieces of the sheet metal "straps" that attach the pressure plate to the clutch assembly , anyone seen this three pad friction plate before ? most of the pieces have F and S stamped on them . The break-up is from too much wheel spinning and quick getaways I reckon , are their heavy duty clutch kits out their ? any recommendations ?
Regards
Bill Black
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1995 Grinnall Scorpion III(1990 K100 16v motor)
2010 KTM 450 EXC
Moto Guzzi V50 powered hovercraft !
1989 K100RS (8V) special edition
1974 Yamaha DT360
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1980 BMW R100RS
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duckbubbles · Posted: Fri Feb 08, 2008 7:45 pm Post subject:

I have seen several "petal" style clutch plates designed for cars. They are mainly for high performance use. The standard K1 and any other K bike (brick) type is the full circle plate. I suppose somebody put one of this type in your bike. If the engine is stock or near it, that clutch isn't any benefit, in my opinion. It is supposed to stand up to more abuse, and I guess it may have.
I had the same thing happen to my bike about a year ago. The spring leafs around the perimeter started to break. I replaced the pressure plates. I don't abuse the thing, so it may have just been chance. Didn't notice any change in feel or performance of the clutch.

Frank
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85 K100/1100RS, 321,000 miles, 25 years
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Flying Duck · Posted: Fri Feb 08, 2008 8:16 pm Post subject:

I'll bet that Scorpion weighs just a tad bit more than a K bike. Wink

So it would make sense to me that the clutch is putting up with more "abuse" and that a high perf clutch plate would be warranted.

Just my .02 Rolling Eyes

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