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From: "kathy" <kathy@atkinsrotary.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>,
  "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Oil Cooling/Pumping
Date: Wed, 15 Dec 2004 19:23:18 +0000
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Joe,
The Mazda Oil pump is pretty good. If you are concerned with the amount it produces we have racing ones that will flow more. The only time they fail is when the shaft locks up as the gears and chain are a strong design.
Kathy

-------Original Message-------
> From: "Joe" <jewen@comporium.net>
> Subject: [FlyRotary] Re: Oil Cooling/Pumping
> Sent: 15 Dec 2004 16:56:35
>
>  Kelly,
>  
>  My first thought was to find a suitable mechanical pump and belt drive it.  If an electric were chosen I would include a backup pump.
>  
>  Joe
>  
>  ----- Original Message -----
>  FROM:   Kelly Troyer
>  TO: Rotary motors in aircraft
>  SENT: Wednesday, December 15, 2004 11:50   AM
>  SUBJECT: [FlyRotary] Re: Oil   Cooling/Pumping
>  
>  Joe,
>  Idea probably has merit but it adds another failure mode (electric   pump
>  I presume)......I would not want to use it for primary oil cooling but   can
>  see potential as a auxillary cooling system for part time use during   those
>  max power climbouts and / or hot weather use......IMHO
>  --
>  Kelly Troyer
>  Dyke   Delta/13B/RD1C/EC2
>  
>  --------------     Original message from Joe : --------------
>  
>  > With all the problems encountered with leaking oil coolers,     I was wondering
>  > if the following has any merit.
>  >
>  >     Instead of using the engine driven oil pump to circulate oil through the
>  > cooler, why not install a secondary cooling loop. A seconary oil     pick up
>  > would be connected to an auxilary oil pump which would     circulate the oil
>  > through the cooler and return to the sump. The     secondary loop could be run
>  > with a lower pressure and larger hoses     to maintain an adequate flow rate,
>  > putting less internal force on     the oil cooler. The normal engine
>  > connections for the oil cooler     would be directly connected to each other to
>  > maintain oil flow in     the engine.
>  >
>  > One downside might be the couple of extra     pounds for the aux oil pump, but
-------Original Message-------