Espen's Reed Valves

[Howard Wilkinson]

Dave:
    I'm not sure if you are speaking of the many "hit & Miss" type
engines which used an ordinary valve with a light spring which was
sucked open during the intake stroke..... I presume this is what you
mean by "reed valve".....or was there some other form of reed valve
used?  A friend of mine has a number of these engines still in use.
H.W.

-----Original Message-----
From: Dave Williams <dave.williams at chaos.lrk.ar.us>
To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, May 02, 1999 10:24 PM
Subject: Espen's Reed Valves



-> cam to get variable duration and the reed valves would take care of
-> the blowback problem at the low end......    At least a first
thought

Alfa Romeo built some engines like that 20 years ago.  There were also
some stationary engines using reed valves at the beginning of the
century.

The Alfa setup let them run a long duration cam without confusing the
carburetor with reversion pulses or contaminating one cylinder's
intake
charge with another's exhaust coming through on overlap.  It looked
like
a fine idea to me, and I have no idea why they dropped it.