Harris framed Ducati

[GuzziMoto]

[czakky]

More appropriate, my bad.

[czakky]

I always ask people with highly modified machines.

Looks like these guys started life as 750ss'.How much time do you lose on a lap after all this beautiful kit compared to the way Ducati delivered them?

[GuzziMoto]

Well, first off; Yes, I was lucky enough to be the rider.

I did not own the bikes (I do now, through attrition), they were owned by a friend. And I did not have to do all the mechanical work, another dear friend took care of that. I had the fun job on the team.

The stock chassis bike is easily 10 seconds a lap faster than a stock Ducati 750SS at our local track Summit Point. The Harris framed bike was about 3 seconds a lap faster still. Clearly the differences go down as you get further and further moddified. Each additional bit of speed gets harder and harder to achieve.

Part of the reason the difference between a stock bike and the race bikes is the stock bike we started with was rather under developed from Ducati. With a modern sport bike the differences are likely half what we had.

The motor makes close to double what the stock motor weighed, somewhere in the 80's at the rear wheel. The bike weighs about 325 lbs. That is about 100 lbs less than stock.

[GuzziMoto]

Some more info on the bike.

The forks are Ohlins off a WSBK Kawasaki.

The rear shock is Ohlins with a rising rate linkage (the Ducati 750SS used a cantilever set up like that of the V11).

The brakes are Brembo iron disks and Performance Machine billet calipers ( with a Lockheed adjustable master.

The front wheel in the picture is not the original front wheel, I need to mount that back on there. The correct front wheel is a carbon fiber wheel.

The rear subframe is a custom titanium piece.

It uses a radial steering damper.

It has a quick shifter (from back in the mid '90's when few did).

The exhaust (other than that muffler) is hand made out of stainless by a guy who made exhaust systems for NASCAR.

[czakky]

That is so cool! Titanium swing arm!

I used to have a customer that was an avid bicycle racer I asked him the same what the difference was between him on his $20k+ race bike and the steel frame bikes he raced in the 70s. He was like maybe a second on a relatively long sprint (30 miles or so). I'm sure it's harder to say with a bicyclist but still interesting.

Thanks for sharing

[GuzziMoto]

The titanium rear subframe is the yellow structure that is holding up the rear seat section. You can see it at the bottom front of the seat section. It runs all the way to the back where the oil cooler is mounted.

[czakky]

Subframe. I misspoke I thought it was swing arm. That's some serious dough for the subframe, 90s titanium 2010s carbon fiber... Personally I like titanium aesthetically along with finely carved aluminum.

Makes sense why your such a cornering guru now!