flyrotary@lancaironline.net Mailing List Archive

Yep, I think you’ve represented well what Dick Rutan found. It will be interesting watching Al work through this.

Even though my oil temps are under control now I still need more HP out my engine – and when I find it I will probably be back to looking for more cooling. I’m hoping some ducting improvements will do it – we shall see!

Joe Hull

Cozy Mk-IV N31CZ (65 hrs - Rotary 13B NA)

Redmond (Seattle), Washington

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Dale Rogers
Sent: Monday, August 07, 2006 8:22 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: First flight - Oil temp

Joe Hull wrote:

It was bugging me that I couldn’t remember the reference to the reverse scoop – so here’s the link – it was Dick Rutan:

http://www.ez.org/cp47-p11.htm

Essentially put the reverse scoop on the top of the wing all the way ahead of the oil cooler for best cooling.

Joe Hull

Cozy Mk-IV N31CZ (65 hrs - Rotary 13B NA)

Redmond (Seattle), Washington

Thanks, Joe. I was trying to remember where I'd seen that. In the meantime, I drew the attached drawing from memory of what I'd gleaned from it, back-whenever.

Al's scoop exit appears to be too much shrouded. Something closer to this is more likely to get maximum airflow.

Dale R.