Jett Muffler - Performance Decrease With Deflector.  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Jett Muffler - Performance Decrease With Deflector.
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Jett Muffler - Performance Decrease With Deflector. - 7/18/2008 8:16:03 AM   
PlaneHeli


 

Posts: 607
Joined: 2/1/2006
From: Australia & Asia &, NEW ZEALAND
Status: offline 		I have purchased two Jett Red Tuned mufflers for my OS 46AX and OS 55AX engines.

I see silicone exhaust deflectors have been used with your mufflers.

What sort of power decrease (if any) could I expect to see using silicone exhaust deflectors.

I noticed you recommended an internal diameter larger than the exhaust outlet. I would fit one as you recommended.

Cheers

_____________________________

Useless Things...Runway behind you, Sky above you, Air in your Tanks, Engine Oil in the Hanger.
       Post #: 1

RE: Jett Muffler - Performance Decrease With Deflector. - 7/18/2008 5:55:43 PM   
bob27s



Posts: 4821
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		No effect on power output or performance.

You want a tube that has an inside diameter that slips over the tail piece on the muffler. Then secure it with a thin zip tie. Try and keep the length to a minimum.... under 2.5" is a good target.

Typically the 40-90 size deflectors from Great Planes and Dubro work ok. You would want to avoid anything much longer than that.





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Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to PlaneHeli)
       Post #: 2

RE: Jett Muffler - Performance Decrease With Deflector. - 7/19/2008 12:46:24 AM   
PlaneHeli


 

Posts: 607
Joined: 2/1/2006
From: Australia & Asia &, NEW ZEALAND
Status: offline 		Thanks bob27s.

Will do.

_____________________________

Useless Things...Runway behind you, Sky above you, Air in your Tanks, Engine Oil in the Hanger.

(in reply to bob27s)
       Post #: 3

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Jett Muffler - Performance Decrease With Deflector.
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