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HomeAircraftHelicopterCentury Radikal G20-30 N640 Hawk Predator › Gasser Exhaust Question
01-14-2010 07:33 PM  8 years agoPost 1
tigertym

rrNovice

Cleveland , Alabama-USA

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I just got involved in gas heli's and bought the radikal. My question is I bought the torpedo muffler and it comes with a washer that goes into the rear of the muffler to create back pressure on the motor, do I need to use it or not ? thanks in advance for people who post the answer

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01-14-2010 08:07 PM  8 years agoPost 2
Sean Bosse

rrApprentice

Germantown, MD.

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It's mainly used for sound control. Add it and it should drop the noise level by a couple Db's.

Hope this helps.

Sean

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01-14-2010 08:19 PM  8 years agoPost 3
tigertym

rrNovice

Cleveland , Alabama-USA

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Thanks I appreciate the reply. Does it affect the power output at all or sound only ?

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01-14-2010 08:22 PM  8 years agoPost 4
Zman

rrKey Veteran

Florida

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we tried with it and without. I recommend without, let it breath

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01-14-2010 09:59 PM  8 years agoPost 5
rccarguy

rrVeteran

Boston MA

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I've run it both ways. No appreciable difference in performance either way that I could see, measured with a DB meter we found it to be about 2 DB quieter with the washer installed.

XCell Spectra G
Radikal G20
Some obsolete nitro helis too...

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01-15-2010 12:31 AM  8 years agoPost 6
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Was that 2dB difference noticeable?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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01-15-2010 01:35 AM  8 years agoPost 7
rccarguy

rrVeteran

Boston MA

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Was that 2dB difference noticeable?
Barely, it takes the sharp edge off the sound, but not much else.

XCell Spectra G
Radikal G20
Some obsolete nitro helis too...

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