We use them on our engines.
Russ Blink
EXOS
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Robert Watzlavick
Sent: Wednesday, April 27, 2016 8:12 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] 1/4-28 spark plugs
I discovered today that the NGK ME-8 spark plug is no longer made. I've been
using the 1/4-28 plugs in my Augmented Spark Igniters so I'm looking for a
replacement in the same size. In addition to the cheap import knockoffs, the
Rimfire VR2 looks to be a near exact match:
http://sparkplugs.morrisonandmarvin.com/14-32.php
Has anybody used the Rimfire plugs in a rocket application? The only thing I'd
be concerned with is the prolonged heat and temperature causing a leak around
the insulator. I suppose I could do a little igniter test program to qualify
them myself. On this page, they claim XCOR, NASA and other aerospace companies
use them:
http://sparkplugs.morrisonandmarvin.com/main2.php
-Bob
