Espen's Reed Valves

[Aaron Willis]

At 06:35 PM 5/3/99 -0700, you wrote:
>Espen:
>    That's one I've never heard..... or even considered...... what a
>thought.... Has someone been doing that.....Wow the possibilities are
>fantastic..... With such a setup you could use a centrifugal advanced
>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
>it seems like a brilliant solution.... wish I'd thought of that
>one..... I'm going to have to think on that a bit more.  It takes care
>of the intake at least.             H.W.
>
>>
>>Offcourse.......you are right , I have wanted to try a 4 stroke with reed
valves
>>in the intake and run a camshaft thats good for top end......
>>Espen
>>
>>
>
>
	Honda did this in 1982 in their XR500 four-stroke dirt bike.  It was a
500cc (saw that coming) single and the reed valve apparently was used to
eliminate low-speed reversion which caused big singles to stumble or stall
at very low RPM.
	A friend of mine owned and rode one but I don't suppose he ever removed
the valve to evaluate its effectiveness.


	Aaron Willis
	ICQ #27386985
	AOL IM: hemiyota
	http://surf.to/garage-te51 Garage TE51 International