Monday, November 28, 2016

Stock vs "Open" Clutch Cover

The first upgrade I did was the clutch housing.
The 2002 Monster 750 had what is called a "wet" clutch, or one that is bathed in motor oil (the same stuff in the crankcase). Earlier Monsters and even current ones if I am correct that are higher engine displacement had what is called a "dry clutch". The dry clutch has no hydraulic fluid, its completely dry. Many Ducati enthusiasts prefer to take the stock cover off and put a custom (there are hundreds of variants) cover on that allows you to see the clutch spinning inside as well.

The dry clutch is very loud and noisy as well (in a good way), it sounds like the valves are badly in need of an adjustment and most owners of dry clutch models have probably pissed off and made enemies of their neighbors because of the noise, particularly when they leave for work early in the morning.

By contrast, the wet clutch is quiet. I wanted the open clutch, so I bought a custom cover machined by a guy in Portland (Mark Riley of SatoriMoto out of Portland, OR). I think I found him on Ebay and asked if his covers would work on an M750; they wouldn't but Mark had an extra 750 cover laying around The cover is basically a stock cover with a hole machined in it and a piece of glass inserted and sealed in. Its not cheap, but its worth the price.  Images below show the stock cover with the cover after replacing. The final appearance is at the end of the blog.

The bike with stock clutch cover. After the new cover has been added. The pressure 
plate is a stock, cast aluminum one, which will eventually be upgraded

So, after I had added the open (windowed) clutch cover, I thought it looked too plain. This is the cover after having it powder coated. I opted for powder coating because its resistant to petroleum, will not bleach or fade in UV light like anodized metal, and because cast aluminum does not anodize well. Most of the parts you see anodized are milled, which works well.

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