|
|
Bill,
Attached is a plot of coolant temperature, coolant pressure, outside air temperature, and IAS for a recent flight. The flight consisted of two touch and go's, a climb from 7200 ft to 11,500 ft MSL, a series of stalls, slow flight, steep turns, and a descent
to landing. A stock type thermostat is used and a 14 psi cap is installed on the expansion tank which has at least a quart of air space when cold.
Steve Boese
RV6A, 1986 13B NA, RD1A, EC2
From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of Bill Bradburry <flyrotary@lancaironline.net>
Sent: Thursday, January 29, 2015 9:28 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: swirl / expansion tank configuration
Seeing Lynn’s cooling system again gives me an easy way to ask my question. I have been unable to locate a filler cap similar to the
one that is shown on top of the propane bottle. I can only find pressure caps like the Stant lever cap shown on top of the RX-3 bottle.
Does anyone have a source or can suggest one for a radiator filler cap?
Also I am wondering about the pressures that others are seeing in their systems. I have a 21 pound cap on my system and the pressure
immediately goes to that pressure and stays there for the duration of the flight. I think that others have seen pressures that are lower from time to time during the flight and I would appreciate some anecdotal evidence if others see different pressures.
Bill B
|
|