Making my own vented clutch cover!! - Sportbike Forum: Sportbike Motorcycle Forums
 
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post #1 of 7 (permalink) Old 07-03-2002, 11:27 AM Thread Starter
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Making my own vented clutch cover!!

Hey, I came across a spare clutch cover and I'm going to drill it out with holes for vents as opposed to buying one for way too much money. Any suggestions on what vent patterns I should use? Let me know

I'd rather be on my Duck!
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post #2 of 7 (permalink) Old 08-14-2002, 08:14 PM
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Did you ever drill out the clutch cover? Let's see some pics!

Eric

It's not as bad as it looks
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post #3 of 7 (permalink) Old 08-14-2002, 10:27 PM
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Those covers are actually two sheets of steel sandwiched and stamped together, then staked around several of the bolt holes. They are a bitch to drill because of that. It's easy for the drill or end mill to grab while breaking through and a bitch to grip because of the shape and lack of ridgidity. Transfer punching, drilling, and tapping a block of aluminum would make a decent fixture to hold it and a hole saw might actually be better to make the holes.

Yes I've done it. Ever wonder why they have such a "dead" sound instead of a ring when you tap on them? Good luck.

Keeping the "Hap" in "Happy Holidays"!

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post #4 of 7 (permalink) Old 08-16-2002, 04:29 AM
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Talked me out of it,

Sounds like a real bitch. I may use transfer punches as you decribe to hold it to the table of the mill. I have two clutch covers that are doing me no good whatsoever, so I may still try it.

After machining through two layers of material, how did the edges look on yours? Thinmk it's worth persuing?

Eric

It's not as bad as it looks
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post #5 of 7 (permalink) Old 08-16-2002, 11:55 PM
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Quote:
Originally posted by EaracheB
... After machining through two layers of material, how did the edges look on yours? Thinmk it's worth persuing?

Eric
Yes, if you make the fixture to have a solid grip and have access to a mill. It came out O.K. Because it's steel, it will be best to plan on painting it when done. I eventually found that a hole saw with the pilot drill removed and a drilled and tapped block to bolt it down and grip in the vise worked best. I think I wound up with five 1", maybe 1 1/4" holes and it looked O.K. Good luck.

Keeping the "Hap" in "Happy Holidays"!

Regime change begins at home.

Blind patriotism is worse than no patriotism.
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post #6 of 7 (permalink) Old 08-17-2002, 04:21 AM
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I have a milling machine in the shop at home. Think I'll go with a slotted look with the middle slot being the longest and then smaller ones above and below it.

We'll see what it looks like when done, I guess. I'd still llike to see a picture of yours if you get the chance.

Eric

It's not as bad as it looks
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post #7 of 7 (permalink) Old 08-17-2002, 08:50 PM
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Quote:
Originally posted by EaracheB
[B... I'd still llike to see a picture of yours if you get the chance.

Eric [/B]
I did it for a buddy of mine so I don't see it often and I don't have a digital camera so it wouldn't be easy. It wound up similar to the layout of the vented carbon fiber ones I've seen. Hope that helps.

Keeping the "Hap" in "Happy Holidays"!

Regime change begins at home.

Blind patriotism is worse than no patriotism.
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