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New Ducati engine

Started by krolik, August 30, 2008, 01:44:12 PM

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Popeye the Sailor

Quote from: monsterduc on September 02, 2008, 10:37:17 PM
I don't know why Ducati would abandon desmodromic valve actuation.  I mean the advantage of being able to open the valves without the power robbing effect of fighting the valve springs and then mechanically close the valves as well seems so efficient. 

Yet smaller motors produce just as much power with the traditional design.....
If the state had not cut funding for the mental institutions, this project could never have happened.

silentbob

Quote from: someguy on September 02, 2008, 11:07:37 PM
Yet smaller motors produce just as much power with the traditional design.....

Not for the same number of cylinders.  HP is work per unit of time.  Produce the same torque at a higher rpm and you'll have more HP.  Given the same displacement and bore to stroke ratio, the engine with more cylinders will rev higher and therefore produce more HP.  Right now Ducati makes the highest HP 2 cylinder engine.

bulldogs2k


Smitch

Quote from: Evil_Ductator on September 02, 2008, 01:24:44 PM
All this talk of belt drives...

Ducati is a company with real actual racing heritage (not just brochure copy).  Now personally, I love belt drives for their easy of use and maintenance free operation.  But they don't allow gearing changes.

I think a belt drive with the proper ratio would be great on a new ST though!

I think you misunderstood.  They're talking about the cam-timing belts in the engine being changed to chain.

Evil_Ductator

Quote from: Smitch on September 03, 2008, 03:24:13 PM
I think you misunderstood.  They're talking about the cam-timing belts in the engine being changed to chain.

Yea, going back and looking again I think you're right, I was just not thinkin' straight   [thumbsup]