[Ducati] 17000 RPM MotoGP Limit?

[Jim Calandro]

There is a pump that must maintain the pressure to operate the pneumatic 
valves.  I wonder if that is an additional load on the motors  I have not 
studied pneumatic motors to see how they operate so cannot guess any better 
than that.  Other wise I would expect that they would be very low friction 
and certainly low mass to achieve the rpm they do in cars.

I think the point was the smaller the motor the more the advantage the desmo 
system produces so the F1 motors would be going in the wrong direction if 
that theory was correct.  Not sure what the individual piston in F1 
displaces but I think it is greater than 200 cc.

I have read some where that Ducati gave emphasis to design of the bike for 
top speed where Honda gave emphasis on the ability to turn the bike.  At 
high speeds aerodynamics plays a very big role so that would make sense from 
what you see at the track.

Jim

Jim Calandro
il Capo
US DESMO
www.usdesmo.com
704-843-0429
----- Original Message ----- 
From: "Tony Pagliaroli" <ajpags at gmail.com>
To: "Ducati Owners Group" <ducati at ducati.net>
Sent: Tuesday, March 11, 2008 4:41 PM
Subject: Re: [Ducati] 17000 RPM MotoGP Limit?


> So I'm not sure I understand how the pneumatic motors have additional
> friction to operate valves over desmo.  Also, unless there's some rule
> scenario that specifically prohibits this technology, I can't imagine
> why F1 wouldn't adopt it at any displacement if what you're saying is
> true.  Being naive about pneumatic motors, could you enlighten me?
>
> Now perhaps the Desmo system has the upper hand at the moment, and the
> Japanese factories are behind in their pneumatic development right
> now.  That much I can buy at this point.  Ducati hasn't had to develop
> a new valve train, so they clearly have the upper hand in this one.
> If your statements are correct, they'll always have it, and if not, we
> may see the pneumatic valved motors being the norm at the front soon.
> Time will tell I guess.
>
> Also, do we have any real verification that HP alone is what's causing
> the higher trap speeds?  I mean drive (meaning the ability to get that
> power to the ground electronically or otherwise) and aerodynamics are
> contributing factors, and every bit as important as the outright HP
> number, no?
>
> Pags
>
> *****
>
> Ducati.net is sponsored by Oncycles.com, who has the largest selection and
> lowest prices, on the finest motorcycle products anywhere, all served with
> world-class customer service.  Check them out!
> _______________________________________________
> Ducati mailing list
> Ducati at ducati.net
> http://list.ducati.net/cgi-bin/mailman/listinfo/ducati
> Mailto: capo at carolina.rr.com