601 Flying Carpet

Getting more time in on my 601 XL / Corvair. Cruised about 100 miles Sunday, 3000 RPM, about 110 MPH TAS at 5000 MSL. The air was smooth as glass and the Corvair never missed a beat. I've been tweaking the cowling to improve cooling, and this flight saw about 230 deg. oil and 350 - 370 cht's. I'm running the Ellison carb, and pull the mixture back just enough to bring the EGT's up to 1300 - 1350 deg., using a Cyberdyne mixture meter for guidance. This Zenith flies like a dream, and turns a lot of heads as well. A joy to build and fly.

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Comment by JEFF COCHRAN on July 21, 2011 at 7:57am
Lynn,  I'm building a CH750 with a Corvair and have questions about your cowling since they are the same.  What changes are you making to your cowling to improve cooling.  I saw a picture of your cowling from CC #20 showing the air inlets.  WW says to use a 4" PVC coupling to smooth the airflow.  How long is your inlet and diameter.  How did you attache the inlet to the cowling, is it split top and bottom or just attached maybe to the bottom?  Is it attached with epoxy or fiberglass?  The 601 manual is not clear on any of this.   Jeff
Comment by Stephen R. Smith on April 7, 2009 at 11:50pm
Seems like your getting it dialed in and having fun. The 230 deg. oil in the winter could signal some possible problems to come in the summer. It took me a while to get my oil temps under control on my Jabiru 3300. Until I did, I saw some 240-250 degree oil temps when climbing on very hot days. It will get your attention fast.

Steve

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