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Old 02-20-2007, 08:52 AM
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Default RE: Really want to go fast??

The quickee airvalve is 9mm, the q40 venturi is 9mm. The only thing limiting the airflow is the shape. I doubt Henry would care less if you put a $15 airvalve on one of these motors, they work fine. For sport use, I would recommend the airvalve over the line pinch method.

There is at least on q40 competitor that uses the airvalve in competition and says that there is no difference in performance. I believe he shaped the airvalve in more of a cone like shape, similar to a venturi. As long as you don't make the hole over 9mm, it is still legal in Q40.

His RCU name is DHG, you can look him up.