During the first 50 hrs or so on my 20B I had no collector at all on the breather.  I’d occasionally notice a few drops of oil on the rotor housing.  I put a tube on it and collect it in a little pill bottle just to get a measure of how much there was.  Every 20-30 hrs it collects something like a teaspoonful.  Not much of an issue.

 

Running at higher rpm with 2.85:1 redrive will up that amount a bit.

 

Al

 

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley
Sent: Thursday, March 10, 2011 8:36 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Crankcase ventilation

 

I've not provided for clean way to vent the crankcase, yet.  And I'm also not going to use the oil injection ports.  As

I understand it, the injection ports should always be at a negative pressure.  Would it be a crazy idea to have the

ports pull the dirty air out of the crankcase and not spread it across my airplane's belly?

 

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