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DesmoDue - General Questions and Chat
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  #1  
Old 30-Jan-2012, 10:55
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DSC Member antonye antonye is offline
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Old 30-Jan-2012, 22:42
DSC Member Spjallen Spjallen is offline
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That's one brilliant post.
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Old 30-Jan-2012, 22:59
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But not relevant to our little bikes. Superbike a have a chamber with pressurised air, where our tiddlers don't. Certainly not from research I've been reading

Only way to know is back to back dyno which SP has done, hope to do the same and see the outcome. Shame if it's worse tho, have to keep the weight and look of the monster tank
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Old 30-Jan-2012, 23:42
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Quote:
Originally Posted by bradders
But not relevant to our little bikes.

Not quite true - there's a lot of good information in there about the venturi effect, the plenum effect, Helmholtz resonation and filter performance which are all relevant to any bike and the power it makes as well as the way it makes it.


I'd rather die peacefully in my sleep like my Grandfather,
than screaming in terror like his passengers.- Jim Harkins

Ducati 748S | Ducati Hypermotard 1100S | Ducati Panigale V4 SP #876 | 600-620SS DesmoDue Racebike #111 <-- Sold!!
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Old 31-Jan-2012, 00:06
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Also makes a difference wether your running CV Carbs, Slide carbs or fuel injection
Engines are essentially air pumps but to work they need need a air fuel ratio within a certain range. One end of the range will give good economy the other the best power.
So its not only a matter of drawing in two lots of 300cc (probably less as engines aren't 100% efficient, especially older two valve SOHC ones) 5000 times a minute but also getting not only the correct amount of fuel but also getting it to mix with the inrushing air as best as you can.

What I would like to know at exactly what point do the injectors switch on to fit in with the opening cams duration


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Old 31-Jan-2012, 11:43
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Quote:
Originally Posted by skidlids
What I would like to know at exactly what point do the injectors switch on to fit in with the opening cams duration

Purple.

You techy boys are ace, I press the red button and twist the grippy thing and it goes vroom till the fuel runs out or I crash.


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Old 31-Jan-2012, 12:16
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Crash....................
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Old 31-Jan-2012, 12:17
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Yep,
very interesting, but I am with Badger on this one (apart from the crashing bit)

Mark
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Old 07-Feb-2012, 12:52
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love it.

Quote:
Originally Posted by badgerpilot
Purple.

You techy boys are ace, I press the red button and twist the grippy thing and it goes vroom till the fuel runs out or I crash.

love it, thats my philosophy as well! (and most in DD I think)
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Old 30-Jan-2012, 23:07
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Quote:
Originally Posted by Spjallen
That's one brilliant post.


+1 to that.
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