Reed Valves

"Can anyone recommend a good s

"Can anyone recommend a good site for me to learn about reed vavles, what they do and how they work,do not have any problem at this time, just information HUNGRY.
Mike "

"[url=""]http://science.howstu

"http://science.howstuffworks.com/two-stroke.htm

Just as a quick "here's what they do" it's really pretty simple...

The reed valves are nothing more than a "one-way" valve...
When the piston is being forced down by the combustion the reed valves "close off". This builds pressure in the crankcase (where fuel/air mixture exists) and once the inlet is exposed (the piston has moved far enough) the pressure, combined with the vacuum created by the escaping exhaust gas forces the fuel/air up into the cylinder.

If the reeds valves didn't exist at this point, all the fuel/air would just be blown back out through the carb opening...

On the flip side, when the cylinder is on it's upstroke there is a vacuum created in the crankcase... This draws air IN through the carb and the reed valves open up allowing the fuel/air to flow into the crankcase so the cycle can start all over again..."