[NSRCA-discussion] 2C Pipe vs Muffler

[Rcmaster199 at aol.com]

In a message dated 3/6/2006 6:57:30 PM Eastern Standard Time,  
jeffghughes at comcast.net writes:

was  going through the data on Ed Hartley's 2 stroke page and noted that 
there is  virtually no difference between a piped OS1.40 and a muffled OS1.40 for 
the  prop sizes being used.  I assume that is because to get a nice linear  
throttle curve on a pipe, the pipe is deliberately set too long for peak  
horsepower. My question is why run a tuned pipe at all if you are going to set  it 
too long for peak power?. Has anyone run back to back tests with same  engine 
and plane with a pipe vs a muffler to see if there is truly a  difference in 
power or feel?


Yes and there is
 
MattK
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