Exhaust weight savings

[Micro Mong Bldr]

My 2 into 1 HKS exhaust with tractor muffler was getting rusty. I substituted 2 piccolo tubes - same rate of climb, no noticeable change in noise, much easier maintenance, and 9 lb less weight. It makes the exhaust come out as a series of tiny barks instead of a few big ones. Holes face to the sides and aft, have a total area larger than the cross sectional area of the pipe. Finisned it with old fashioned black wood/coal stove polish.
Larry

[Dusty]

Keep an eye on this,I would be wary of a failure near the flange!

[SkySteve]

My 912 model I has dual exhaust. I installed 2 Volkswagen mufflers for weight savings. In the photo they look like exhaust pipes, but they are actually two Volkswagen mufflers siting side by side.
http://i237.photobucket.com/albums/ff12/KitfoxSteve/85DD/Mexican%20Mt%2085DD3.jpg (http://s237.photobucket.com/user/KitfoxSteve/media/85DD/Mexican%20Mt%2085DD3.jpg.html)

[jrevens]

My 912 model I has dual exhaust. I installed 2 Volkswagen mufflers for weight savings. In the photo they look like exhaust pipes, but they are actually two Volkswagen mufflers siting side by side.


How did you pipe those Steve... a simple 2 into 1 on each side? Can you make any kind of comparison noise-level wise to the Rotax muffler?

By the way, that's a beautiful picture!

[Micro Mong Bldr]

Keep an eye on this,I would be wary of a failure near the flange!

Yes, I'll keep an eye on that, may add a brace. I have seen similar systems that worked fine. Thanks for the thought.

[Micro Mong Bldr]

My 912 model I has dual exhaust. I installed 2 Volkswagen mufflers for weight savings. In the photo they look like exhaust pipes, but they are actually two Volkswagen mufflers siting side by side.
http://i237.photobucket.com/albums/ff12/KitfoxSteve/85DD/Mexican%20Mt%2085DD3.jpg (http://s237.photobucket.com/user/KitfoxSteve/media/85DD/Mexican%20Mt%2085DD3.jpg.html)

The old aircooled VW exhaust tips?

[SkySteve]

How did you pipe those Steve... a simple 2 into 1 on each side? Can you make any kind of comparison noise-level wise to the Rotax muffler?

By the way, that's a beautiful picture!

John,
Dan Denny did a left side 2 to 1 and a right side 2 to 1 before I got the plane. They are held in place with the old half a link of chain welded on with a spring holding them. I've never had a Rotax muffler but have tried several other mufflers (all too heavy in my opinion). I would consider my plane fairly loud.

[SkySteve]

The old aircooled VW exhaust tips?

Micro,
The ones I have aren't chrome, but I really like that look. Maybe, just maybe, I'll check with the local muffler guy and see if I can get some. I would then look "cool" and perhaps throw a set of baby moons on the wheels!!! :cool:
(By the way, I already have a round gear shift ball on my flap handle, and a hula girl on the dash, but no dice)

[Av8r3400]

Be careful, SkySteve, this could lead to a horrible, horrible redneck-ey end…

http://strangecosmos.com/images/content/120495.jpg









:D:D:rolleyes:

[SkySteve]

Dude, that muffler is a cherry!!:eek::D