Mailing List flyrotary@lancaironline.net Message #30039
From: Russell Duffy <russell.duffy@gmail.com>
Subject: RE: [FlyRotary] Tension bolt coolant leak; was Torque and torque sequence
Date: Tue, 7 Feb 2006 12:31:20 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
I have never disassembled a rotary engine, so in my further thinking regarding the coolant drip from around the un-torqued tension bolt; perhaps someone would clarify something for me – does the tension bolt anywhere run through the cooling jacket?  I had assumed it did (why else are there seals under the bolt heads, but in looking at photos of housings, and cut-away views, it appears not.  Would this mean then that there is/was a leak somewhere between the coolant jacket and the bolt hole? 
 
Hi Al,
 
The tension bolts do not run through cooling jackets, but it would seem that the area between the inner, and outer O-rings are not completely sealed.  In other words, coolant can seep from the jackets into the bolt holes, particularly when under pressure.  This would be even worse in an area where the bolts aren't tight.   
 
Cheers,
Rusty
 
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