Mailing List flyrotary@lancaironline.net Message #6072
From: Tracy Crook <lors01@msn.com>
Subject: Re: [FlyRotary] 13B smooth running issues
Date: Sun, 29 Feb 2004 13:52:59 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
 
John,  Don't even try to start the engine again until you solve these two issues.  You either have a large bubble of air in your coolant system or a stuck thermostat or ?  The rotary cooling system is notoriously difficult to fill and purge of air until you get to know it.   No matter what, fix it first.
 
Same story on oil pressure.  Don't start until you have a functioning pressure gauge.
 
I've talked to two customers (car guys) JUST THIS WEEK who have burned up freshly overhauled rotaries on first run.  I've lost count of the total over the past few years.
 
Tracy


Cooling.
I don't think I have ANY water circulation at all. After each short 15
second run I added maybe a pint of water. In a later longer run of about 90
seconds I may have overheated the turbo. Perhaps it seized and this is
what's causing my breathing problem below. Anyway, the oil came up to about
180, but the water temp never moved off the peg, and the rad and pipes never
even got warm after any run. I have a slight drip from the lower water pump
fixture which goes to the rad. If this is the suction end, then I'm probably
sucking air into the system. I am running a thermostat. Maybe I should
remove it.

 


Oil Pressure.
I have a cheap mechanical gauge hooked up at the back (because my westach
reads 90psi when the engine's not running and goes off scale when it
starts). The guy watching oil pressure says that the cheap gauge went full
circle, past 100 and hit the zero stop coming the other way. The cheap gauge
has air in the line, but that wouldnt cause this behavior would it?. What
oil pressure should I be reading.

Comments & suggestions welcome as always. I'm wayyyyy out of my depth here.
John Slade
Cozy IV turbo 13B REW



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