Thursday, June 18, 2009

Bike Of The Week - DesmoHarley

One of the more interesting aspects of motorcycles is the variation in the design of the motors that move the bikes down the road. Chris Barber has come up with a variation he calls the DesmoHog. Chris started out with a Harley Davidson crankcase and cylinders, and put them together with a pair of Ducati heads. Chris explains how he did it:

“The heads are the early large valve 900 SuperSport type, both the heads are rear heads with the front turned around 180 degrees and running a front head cam, this gives me two heads with horizontal fins and orients the carbs and exhausts in better positions for the 45 degree layout.

I didn't need to do any head work to get a 10.3:1 ratio because the Ducati has a fairly low ratio with domed pistons, so by going with flat top pistons with the extra displacement, the ratio worked out perfectly.”

Here’s what it looks and sounds like.
 
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