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Discussion Starter · #3 ·
He said that the increased delivery ratio is causing a huge change needed in the jetting. Now he has a Lectron and is having to make his own metering rod for it, much leaner than anything they make available. Once he gets the jetting straightened out then he will quantify the power increase.
 

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Discussion Starter · #5 ·
I know the inventor and he showed me a video of him blasting down the street with it, no problem.
From his description it is creating a higher delivery ratio which is causing a need for the jetting to be much leaner (for the same amount of gasoline ingested). The valve itself is very lightweight and is moved back and forth by the air forces applied to it. Reeds can't utilize the end-of-intake-cycle pressure wave to close it right away which means at high RPM it can take 30 degrees of crank rotation to close, allowing intake reversion. This new valve has no reversion.
 

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Discussion Starter · #7 ·
the spring is soft because the valve easily catches any reversion to rapidly close it. At low RPM the spring closes it before the reversion would happen.
It's a design that can be sized for any engine although the inventor is testing it on his YZ125. He says he tested it up to 13K RPM, no problem.
 
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