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Ernest,
I have tried to use JB Weld on extrusion dies. Even at low extrusion temps of 350 F the JB Weld got very soft and easy to remove (removel was not the goal in this case.) You may want to consider warming the part and trying to removing the JB. Your experience may vary.
Joe
----- Original Message ----- From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, March 22, 2008 12:45 AM
Subject: [FlyRotary] I think I screwed up
I think Chris and I are getting into a battle to see who can destroy the most rotary parts the fastest.
I mixed up some JB-Weld and aluminum powder to fill in the upper runner on my side housings. I'm using the 6-port, which usually caries an insert in the upper runner. The insert ends with a flat wall, so the SOP is to fill it in with some epoxy to form a smooth curve into the chamber.
Knuckle-head that I am, I just filled in the end of the runner, not the insert. I didn't notice until I was checking the profile of the rear side housing to make sure that it matched the front. That was AFTER the JBWeld had set, of course.
The question now is "Will the slightly larger diameter for those two inches make a noticable difference in the engines performance?" If the answer is what I think it is, I have the option of using a front housing that has a little more wear, or dig out the JBWeld and get an insert. (Does anyone have an extra lying around?
-- http://www.ronpaultimeline.com
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