Re: Stroked R16

[R Haug <haugchiro@moscow.com>]

Adam Bradley wrote:

> That is, is the limiting factor of our engine RPM the stroke or
> something else?

I remember reading something about the design of older Ferrari engines a
few years back.  They tried to keep the piston and rod velocity below 4000
feet per second.  If you increase the stroke of the engine, you effectively
increase the velocity of the piston and rods.  If you exceed this limit
then something will come loose (read that as break).
Many of those high revving F1 engines have relatively short strokes.  The
use of titanium probably helps significantly as well.  They may even use
other high tech materials to withstand the extreme rpms.
I thought they were going to replace the valve springs with solenoids to
actuate the valves so they could control opening and closing more
accurately at high rpms.  I could be wrong.  They run 2 - 3 times the rpm
capability of our engines.
Bob