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Date:  9-19-2017
Number of Hours:  0.00
Manual Reference:  
Brief Description:  Oil Seperator

While waiting for the weather to improve for the next test flight, I decided to add an air/oil separator to stop the lubrication of the plane’s belly.

The separator was designed in 3D-CAD and fabricated from aluminum. The crankcase breather air comes into the separator tangentially, impinging on the interior wall. The oil runs down the walls and is fed back to the engine through a 3/8” I.D. tube. This tube is temporarily clear vinyl so I can see if I’m returning clean oil or a frothy crud to the engine.

The air, along with any small oil droplets or vapor move upward, passing through a stainless steel scouring pad and an Scotch-Brite non-scratch scouring pad. Theoretically the suspended oil droplets and oil vapor will collect in these pads and eventually drip down to be sent back to the engine.

The oil free air continues upward and enters a ventilated standpipe extending to the top of the separator. The bottom of the standpipe exits the bottom of the separator, and dumps the clean air out the bottom of the cowling. At least that’s the theory. We’ll see how it works.
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Fabricated Oil Seperator Components

Fabricated Oil Seperator Components

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Completed Assembly

Completed Assembly

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Mounted on the Firewall

Mounted on the Firewall

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