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

Posted: Thu Aug 28, 2008 9:23 pm
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:

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

Posted: Fri Aug 29, 2008 12:44 am
by jcslocum
It's done all the time. Here's a pic to guide you:


http://bp3.blogger.com/_-ZEdypyIzLQ/SJc ... 43003a.jpg

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

Posted: Fri Aug 29, 2008 7:43 pm
by anton88
Thats brilliant --- thanks jc :thumbup:

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

Posted: Sun Sep 07, 2008 1:38 am
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.

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

Posted: Mon Feb 23, 2009 10:27 am
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

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

Posted: Sat Feb 28, 2009 1:22 am
by jetboy
Image

seems to work, definitely tells everyone within 100 meters that there is a ducati around.

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

Posted: Sun Mar 01, 2009 6:52 am
by timmetje
here's mine, easy
Image

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

Posted: Tue Apr 14, 2009 8:04 pm
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

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

Posted: Tue Apr 14, 2009 9:57 pm
by jcslocum
HC = Hydraulic Clutch!

It was a unique feature back in the olden days.....

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

Posted: Fri Apr 24, 2009 7:56 pm
by timmetje
Ha, like all the minivans from the early "90 with airbag on the rear pannel :lol: :lol: :lol:

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

Posted: Sun Apr 26, 2009 12:59 am
by jetboy
did you just compare an Italian sport bike to a minivan?

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

Posted: Thu Apr 30, 2009 7:29 pm
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!