Drilled clutch cover ????????????

discussion about the 750 Sport and '89/'90 900SS, which share many mechanicals with the Paso series
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anton88
Posts: 35
Joined: Mon Aug 04, 2008 10:36 pm
model: 750 Sport
year: 1989
Location: Colchester United Kingdom

Drilled clutch cover ????????????

Post by anton88 »

Just wondering - has anyone had any sucess in drilling vent holes in their clutch cover - for aesthetics and to help release old clutch dust ? Or would it weaken the cover too much ?

I was thinking about a few houles around the outside edge of it (i.e. not on the face of the cover which may weaken it due to the piston being in there).

Oh, and ive double checked - mine is a dry clutch :beer:
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jcslocum
paso grand pooh-bah
Posts: 1714
Joined: Mon Jul 19, 2004 12:00 am
model: 750 Paso
year: 1988
Location: Eastern Shore, MD
Contact:

Re: Drilled clutch cover ????????????

Post by jcslocum »

It's done all the time. Here's a pic to guide you:


http://bp3.blogger.com/_-ZEdypyIzLQ/SJc ... 43003a.jpg
anton88
Posts: 35
Joined: Mon Aug 04, 2008 10:36 pm
model: 750 Sport
year: 1989
Location: Colchester United Kingdom

Re: Drilled clutch cover ????????????

Post by anton88 »

Thats brilliant --- thanks jc :thumbup:
pikey

Re: Drilled clutch cover ????????????

Post by pikey »

Mine was custom machined by the previous owner. Its really cool because you can hear the dry clutch jingle really loud after the cover is vented.
fester

Re: Drilled clutch cover ????????????

Post by fester »

I've got a vented clutch cover that I'm interested in selling. The pattern copies what was used on the factory race bikes of the era so I've been told. It takes out a bit more meat than the oval holes already shown. It follows the edge of the internal ribbing but all ribbing remains intact and it only takes out materail from the outer ring. Look on the underside you'll know what I mean. It took me ages to find a drawing for this and then to make it cost effective I had to learn to do the CNC programming, dra it all out then take it to a guy to do. I did 2 so I could test the first one and I don't think I really need the spare so if I can get good money for it it may as well go to a good home. It's freshly machined and satin black powdercoated so it looks new and the bore is good also.

I want $300AUD for it and it is presently on ebay with a day to go.

If there were a few wanting them I suppose it's possible I could arrange to get a series done but not sure if it would be worth it with overseas postage both ways then the cost of the milling operator etc.

If someone is keen on this one let me know but I won't give it away as it's fairly rare, Ive onyl seen one other vented this way. Oh doesn't seem to weaken clutch at all I've been running it for over a year now.

Sorry I don't have the photo hosted anywhere but it's on ebay here - http://cgi.ebay.com.au/ws/eBayISAPI.dll ... 0363532897
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jetboy
Posts: 86
Joined: Sat Nov 08, 2008 3:51 am
model: 750 Sport
year: 1990
Location: oakland, ca, usa

Re: Drilled clutch cover ????????????

Post by jetboy »

Image

seems to work, definitely tells everyone within 100 meters that there is a ducati around.
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timmetje
Posts: 56
Joined: Tue Feb 17, 2009 10:22 am
model: 906 Paso
year: 1989
Location: holland

Re: Drilled clutch cover ????????????

Post by timmetje »

here's mine, easy
Image
gpz9biker
Posts: 5
Joined: Tue Apr 14, 2009 7:17 pm
model: 750 Sport
year: 1990
Location: Denver, Colorado

Re: Drilled clutch cover ????????????

Post by gpz9biker »

I an not sure what "HC" stands for but they apperently made alot of them for the time. As you can see in my pic they can also take a beating...

Image
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jcslocum
paso grand pooh-bah
Posts: 1714
Joined: Mon Jul 19, 2004 12:00 am
model: 750 Paso
year: 1988
Location: Eastern Shore, MD
Contact:

Re: Drilled clutch cover ????????????

Post by jcslocum »

HC = Hydraulic Clutch!

It was a unique feature back in the olden days.....
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timmetje
Posts: 56
Joined: Tue Feb 17, 2009 10:22 am
model: 906 Paso
year: 1989
Location: holland

Re: Drilled clutch cover ????????????

Post by timmetje »

Ha, like all the minivans from the early "90 with airbag on the rear pannel :lol: :lol: :lol:
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jetboy
Posts: 86
Joined: Sat Nov 08, 2008 3:51 am
model: 750 Sport
year: 1990
Location: oakland, ca, usa

Re: Drilled clutch cover ????????????

Post by jetboy »

did you just compare an Italian sport bike to a minivan?
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timmetje
Posts: 56
Joined: Tue Feb 17, 2009 10:22 am
model: 906 Paso
year: 1989
Location: holland

Re: Drilled clutch cover ????????????

Post by timmetje »

im so glad youre in oakland and im in holland!

but no, im talking about the text on the rear side of vehicles.
and if you drive a minivan, sorry!
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