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After Muffler

by Seamus Brennan in 912 / 914 Technical Questions 6 years ago

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Re: After Muffler

by Seamus Brennan » 6 years ago

Seamus Brennan

3 5 4

Yes that is the after muffler that I have seen on the 914T.
Is it ok to put one on.?

Shay

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Re: After Muffler

by Bill Hertzel » 6 years ago

Bill Hertzel

13 1.95k 7.96k

It is common in the European Market to install after mufflers.
Some countries, Germany in particular, structure their registration fees in part by the sound level produced by the aircraft.
The quieter the aircraft, the lower the fee.
Autogyro (Germany) ships their kits with 912ULS Engines with after mufflers welded in place.
I do not know if they do the same with the 914 engines.

Inspection of the After Muffler reveals that it is a Thru-Tube Glass-Pack style of muffler.
It is essentially an exhaust extension pipe.
It will produce a very minimal amount of Back Pressure.

You have an Experimental Aircraft.
This is exactly what they are made for!
EXPERIMENT!
Let us know the results.

Bill Hertzel
Rotax 912is
North Ridgeville, OH, USA
Clicking the "Thank You" is Always Appreciated by Everyone.

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Re: After Muffler

by Seamus Brennan » 6 years ago

Seamus Brennan

3 5 4

Thanks to you all for the input .
I will try it out and let you know shortly.

Shay

Thank you said by: Garrett Wysocki

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