Good point, Finn.
The thermostat housing for the rotary has a small approx
1/2" hole (bypass) inside. Remove the thermostat and look straight down
and you will see it. If you do not use a rotary thermostat or no
thermostat at all, then this hole should be blocked. I have heard you can
lose about 20% of your cooling effectiveness otherwise. I taped a 1/2" (I
think it’s a supposed "1/4" NPT - but the actually size of the tap is around
1/2" dia) thread and then screwed in an aluminum hex plug with the correct NPT
(tighly!).
Ed
Sent: Friday, June 15, 2012 8:59 AM
Subject: [FlyRotary] Re: N655HC FIRST FLIGHT.
Congratulations!
If you do remove the thermostat do not
forget to block the hole. I forget the details. Others can give you the
specifics.
Finn
On 6/14/2012 10:43 PM, hoursaway1@comcast.net wrote:
Short flight, seasoned fighter/experimental RV8 builder test pilot, twice
around the patch, 5950 RPM, coolant went to 220F on climb out, oil was at
210F, 78F OAT, temps climbed a little higher, powered back & setup for
landing. This is an RV6A Rotary, five years in the making, 13B Bruce T.
aircraft modified eng., 2.17 RWS drive, EC2, EM2, Ivoprop Magnum 65-105 deg.
elect. in-flight adjust., Hushpower res./muffler, intake similar to Tracy's
RV4 before the Ren. eng., my own Dynamic chamber, 3" throttle
body. I do currently have a 180F therm. installed, might try
removing to look for lower temp. #s, Then louvers in bottom of lower cowl,
need more flight tests, cowl & coolers & inlets are very similar
to Ed Anderson's RV6A Rotary, thanks Ed, Bill E., Tracy C., Dave
L., & all the folks on THE LIST. David R. Cook
RV6A Rotary aircraft. Lansing MI
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