[NSRCA-discussion] gassers

[JonLowe at aol.com]

In a message dated 9/8/2007 5:21:04 AM Central Daylight Time, 
bob at toprudder.com writes:

Large gas engines can be quiet, as anyone who attended the Don Lowe Masters 
can attest to. Cannister mufflers or muffled tuned pipes and the right choice 
of prop makes a HUGE difference. IMAC is going through the same thing that 
pattern went through 15 years ago, the big planes are getting quieter at every 
meet.
 


Absolutely.  I went to the DL Masters, and two weeks or so later to the 
Tucson Shootout.  Unbelievable how much quieter the airplanes were at the Masters.  
Most at the masters ran 3 blade props, and very effective canisters.  Yeah, a 
couple whined about 3 blade props, and slight performance differences, but I 
heard the same things in the 60s when plain old mufflers were first introduced 
for RC engines, instead of straight exhausts.  The guys at the Masters who 
did their homework had no issues (that is, the top finishers).
 
When the sound restrictions were first announced for the Masters, people said 
it was too low a noise level.  Guess what?  Everyone made it.

 
Jon Lowe




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