[Milsurplus] On the edge of off topic - muffler for WWII Navy generator

[WA5CAB at cs.com]

John,

I agree with the "other" John.  It should work fine.  I checked the generator 
manual but it doesn't mention use of an auxliary muffler.  However, it does 
mention the requirement when operated within an enclosed space (room or 
vehicle) to attach pipe to the muffler and run the pipe outside of the space.  Small 
engine mufflers have quite small insertion losses, probably less than several 
feet of pipe and fittings.

In a message dated 5/7/2008 6:16:21 PM Central Daylight Time, 
jmccarty at alcatel-lucent.com writes: 
> I've trying to finish up the project radios for this years Armed Forces Day
> special event station. I have a Navy CDO-73004 800 Hz generator to power the
> GP-7 (thanks to everyone for the suggestions on the AC meter). The generator 
> has
> a muffler that looks like a straight pipe that connects the exhaust 
> manifolds
> from the two cylinders. It runs pretty loud. There is a one inch tail pipe 
> that
> is threaded to take more pipe for the purpose of directing exhaust out of a
> building or enclosed vehicle. Included with the generator when I got it was 
> a
> modern screw on muffler that would have gone on a lawn tractor and does fit 
> the
> threaded tail pipe of the generator. Can I use this additional muffler to 
> quite
> things down or would the additional back pressure make bad things happen 
> like
> burnt valves or cause the engine to stop running?
> 

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at comcast.net> (Backup email)
   
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