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Steve, About a year ago I removed the oil to water exchanger and installed a large Fluydine DB-30717 Double Pass Engine Oil Cooler. With a 6” diameter air feed I can’t get the oil over 205F on a 100F day. Climb out temp on most days is around 190F or lower at 38-40” MP. Cruise temps are around 160F during the summer and too cold during the winter. One cross country flight last winter I could not keep oil or water above 140F. I think OAT was in the 20’s. I don’t have the temperature delta. Need to change the sensor on the cooler inlet. Bobby From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steven W. Boese
Sent: Tuesday, December 03, 2013 2:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Slow but steady progress Bobby, What oil cooler are you using? Do you have any data on oil temperatures in and out of that cooler? Thanks, RV6A, 1986 13B NA, RD1A, EC2, turbo Renesis on test stand
From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of Bobby J. Hughes <bhughes@qnsi.net>
Sent: Monday, December 02, 2013 3:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Slow but steady progress Scott, Make sure your fuel pressure regulator is tracking 1:1 with boost pressure. That might explain your steep fuel curve.
For the first few flights I had the super charger bypass open during takeoff with less than 30” MP. I then started adding boost a pound or two at a time while circling the airport. Once comfortable with the tune I started using boost for takeoff and gradually increasing to 39” MP over several flights. What size waste gate do you have? Bobby Hughes |
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