Pumpless Smoke System

For Smaller 4-stroke Radio Control Airplane Engines

by Michael Myers

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Photos to accompany the explanation of my pumpless smoke system on a .91 4-stroke.

smoke tanks
The throttle servo (top), the smoke valve servo, the two tanks and the two fill tubes.

smoke tubing
This shows the one-way check valve, the three tubes coming off the muffler and the plugged smoke oil overflow tube.

smoke valve
A good view of the on-off valve and the smoke tube going into the muffler

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