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37% S-12
Macho
Stinker

Multi-Wing Model Aircraft Specialists
 
Providing Your SOLUTIONS for Model Flight

Model Aircraft C.A.D. Services    Plan Development Services

Take the BARK out of your
S.I. Models 42% Weeks Solution
with
3W Tuned Canister Mufflers

When I test flew the aircraft with these mufflers I did notice a
definite decrease in engine noise, with an increase in power !!!
I did not have a dB meter at that time but it was defiantly quieter than
the twin stack Johnson canister mufflers that were previously installed.

Front view of the 3W Tuned Canister Muffler installation

Side views of the installation, this installation is much different than a monoplaes installation,
in that the mufflers will rest just above the bottom wing, and just below the radio/fuel
tank area. Good air flow is a must to keep the heat migration from damaging components.

Top views of the installation, for a large aircraft the area for the mufflers is small,
but with the proper ducting cooling can be completed. The mufflers are resting on lite ply rails,
protected by surgical tubing, and held in place by surgical tubing wraped around
the mufflers and the rails. One of the top covers is left off for viewing purposes.

Underside view, to protect the bottom wing from the heat of the mufflers there
is a 1/64" plywood shield that will cover the bottom of the pipe area.
This will generate the bottom of the muffler cooling duct.

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Squeak

S.I. Models the"Multi-Wing Model Aircraft Specialists"
Rd #3 Box #153, Dalton, Pa. 18414, 570-563-1445, tom@simodels.com