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From: <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: turbo oil drain
Date: Tue, 14 Jun 2005 17:54:45 -0400
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Rusty, you can create a 5 psi bypass of the pump. In suction the pressure relieve valve 
http://enginegearonline.com/prreva.html
will be shut. If the pump stops, the engine will pressurize the pump intake side and the spring loaded valve will open and let the engine push the oil through at only 5 psi. How about that?
Buly

> From: "Russell Duffy" <13brv3@bellsouth.net>
> Date: 2005/06/14 Tue PM 05:19:56 EDT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: turbo oil drain
> 
> Here is a company that sells a turbo oil scavenge pump.
> http://westech.home.mindspring.com/   
>  
> Thanks, but as it turns out, I already bought one from Buly.  His is a bit
> smaller and lighter, but higher flow and (unfortunately) current draw.  I
> always take these specs with a grain of salt though, so we'll see how it
> works in reality.
>  
> I've already thought of one problem, which is what will happen if the motor
> ever stops running.  If that happens, depending on the flow resistance of
> the stopped pump, it could blow the turbo seal instantly.  The plan will be
> to route a normal oil drain line to the front cover, which will be about 12"
> uphill.  Near the turbo, I'll T into the line, and attach the pump, which
> will send the oil to anywhere convenient. This will also keep the pump from
> creating a suction on the turbo bearings.  
>  
> Yep, I guess this makes Rev-5 official, though I'm planning to (try to) hold
> off until get the Kolb ready to fly.
>  
> Cheers,
> Rusty 
> .  
>  
>  
> 
>