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Watkinsdw
Joined: 15 Mar 2009
Posts: 138
Location: Deerfield Beach, FL
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 Posted: Fri Jul 06, 2012 11:24 am Post subject: Anti-seize/heat conductant for spark plugs |
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What are folks using for heat conductant/anti-sieze for spark plugs on the Rotax 912ULS?
I've been told that regular anti-seize is ok, but the Rotax site strongly warns against it. The "authorized" stuff is very expensive. An alternative I heard of is computer heat conductant available at Radio Shack.
Your thoughts?
Dave Watkins,
MkIII
KPMP
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Fri Jul 06, 2012 12:06 pm Post subject: Anti-seize/heat conductant for spark plugs |
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An alternative I heard of is computer heat conductant available at Radio
Shack.
Your thoughts?
Dave Watkins,
I know you all get tired of me saying this but.....after flying the 912
series engines for more than 3,000.0 hours, I have used nothing but Rawn
silicone based heat sink on my spark plugs. Same stuff I use on my
computers. I little bit goes a long ways.
In fact, on my 1993 912 80 hp it was not called for until later in its life,
or it may have been when I got the first 912ULS.
john h
mkIII
Titus, Alabama
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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Watkinsdw
Joined: 15 Mar 2009
Posts: 138
Location: Deerfield Beach, FL
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| Posted: Sat Jul 07, 2012 4:08 am Post subject: Re: Anti-seize/heat conductant for spark plugs |
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Thanks, John. I'll get some Raun. Also, thanks for the Rock House trip report. I hope to make a long trip myself when I retire next year. Till then, my better half and I will be taking some trips around Florida, her in the car with camping gear, me in the Kolb, finding fun places in the northern part of the state with the campground as a base of operations for exploring in the Kolb.
On another topic, I ocasionally have to bleed my brakes due to a small amount of air accumulating in the left line. I'm running low on the brake fluid that Steve Green supplied me with the aircraft, labeled "Matco brake fluid" so I called Matco and asked about using ATF, and they said that any red, petroleum based ATF is fine. No need to purge whatever red stuff was previously in the system. Ching Ching, another opportunity to save a little money. Thanks for your ideas!
Dave
MkIIIc
KPMP
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sat Jul 07, 2012 4:25 am Post subject: Anti-seize/heat conductant for spark plugs |
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. Ching Ching, another opportunity to save a little money. Thanks for your
ideas!
Dave
Got an email from Steven Green last night. I know his MKIII is a traveler.
He flew with me to Monument Valley, UT, in 2008, I believe. He also did the
Outer Banks, NC, flight with us in 2003 (?) when the MKIII was powered with
a 582. I'm sure that particular MKIII still has a lot of cross country
flights left in it.
I got started building and flying Kolbs in 1984, because I did not have any
money. I needed something strong, reliable, safe, and inexpensive. In
order to save money I had to learn from others and discover my own ways to
do things cheaper and better. I still have that same attitude. I think I
made a good choice back then. My MKIII continues to be an excellent, safe,
reliable aircraft. It does exactly what I want and need in an airplane.
john h
mkIII
Titus, Alabama
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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Roger Lee
Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.
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| Posted: Sat Jul 07, 2012 5:17 am Post subject: Re: Anti-seize/heat conductant for spark plugs |
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Hi Dave,
Anti-seize should not be put on 912 plugs and is old school. Even the GA guys around me are switching over and away from anti-seize which has no other redeeming quality in this secario than to lube the threads. It was in a Rotax SB a long time ago and I would have to look, but may be in the maint. manual. The proper chemical is thermal conducting compound, it's a heat sync and it is silicone based. It does a couple of things. Takes up gaps within the threads, lubes the threads, but the number one thing is make the heat between the plugs and heads more even. You can buy this paste at most electronics shops or on line from CPS, Leading Edge or Lockwood.
Or here: http://www.cps-parts.com/scripts/prodView.asp?idproduct=245
The the CTflier.com website under maint. pics and videos there is a good video. When using the paste a little is more. In other words don't glob it on. It will spread with just a little. Keep the paste on the top 2/3 of the threaded area. Any that you get on the electrode tip will cause some mis-firing.
http://www.youtube.com/watch?v=dgYcUuPZLrs
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_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056 |
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