Espen's Reed Valves

[Espen Hilde]

Hi!

I want to use a reed cage from a outboard two stroke engine or crosser
bike.
With carbon fiber reed pedals for minimum restriction,or boyesen
reeds.There is  little difference in max output from two stroke with
reedvalve and rotary valve.By using a hotter cam than you would do without
reeds,
I think you can have more hp at max and gobs of torque down low.I would be 
difficult to mount the reeds as close to the valves as possible, I think a
4 valver is most suited because of the two inlet runners making a easy
transition to the wide reed cage. Using a rotary file and file the two
runners 
together and mount the reed cage as the start of the intakemanifold.
Espen.
> 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.
> 
>