Mailing List flyrotary@lancaironline.net Message #58394
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Plug thermostat by pass[FlyRotary] Re: N655HC FIRST FLIGHT.
Date: Fri, 15 Jun 2012 13:26:34 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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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