Al Gietzen wrote:
Ok, thanks, Perry. Yes, my plugs tend to start showing the effects of
lead
fouling (from examining the plugs that is what it appears to be) after
about
25 hours of 100LL. This causes the SAG (Sparkplug Attention Getter)
that I,
Tracy and now you have experienced. Same conditions, high power setting
after takeoff (when you really want all the power you can get) and the
engine drops 150-200 rpm AGgg! So far I 've just stuck in new plugs,
but I
may try cleaning some of the plugs using local airport aircraft
sparkplug
cleaner just to see if it helps.
Ed Anderson
There is a fuel additive that you can get specifically
for preventing the lead fouling. Alcor TCP concentrate
- Aircraft Spruce page 158. Worth checking.
Al Gietzen
Hi Al,
Thanks for the suggestion. Yes, I checked into the use of TCP for lead
scavenging on the advice of some of the local airport crowd, however, once I
read the potential biological hazards of the chemical, I decided to forego
its use and just buy plugs. Nasty stuff according to stuff on web sites, of
course handle properly it can be used safely, like loaded guns, fast cars
and beautiful women {:>).
Ed Anderson
Label on oil can with TCP
Mobil Jet Oil 2 can label - updated early 1998
-Warning!:
-Contains tricresyl phosphate (TCP)
-Swallowing this product can cause nervous system disorders including
paralysis
-Prolonged or repeated breathing of oil mist, or, or prolonged or repeated
skin contact can cause nervous system effects.
Some more on the stuff
THE DARK SIDE OF TCP...
The following was posted by Swifter Steve Wilson on the Yahoo! Globe Temco
Swift Club message board. Most of you know Steve's credentials but for those
of you who don't, Steve's day job is with a group you might just be familiar
with that has the initials NTSB...
Tricresyl Phosphate (TCP) works like Monty and Steve say, but a word of
caution. You should be aware that the substance is noxious and is
transdermal with serious complications for your innards. This means that you
don't want to get it on your skin, eyes, etc., at any cost. Fumes are a
serious health risk also. Not to mention that the stuff has the potential to
be extremely explosive under certain conditions. Sooooo, what worries me is
carrying it in an airplane. In fact, if you read the label Alcor warns
against carrying it aboard the airplane. Actually, that recommendation came
about due to a can exploding inside a C-172 with two fatalities. Using it in
your hangar, with latex gloves, maybe a respirator, and good ventilation, it
works as advertised, but the potential hazards must not be ignored.
I use Marvel Mystery Oil (MMO)in my Avgas. It is NOT FAA approved and it has
NO scavenging properties, but adds a little upper cylinder lube which works
well against the ravages of 100LL in the low compression engines designed
for 80/87. As for the safety aspects of MMO, you could probably take a bath
in it (that's a joke...not recommended, but at least you would smell like
wintergreen). While carrying it in the airplane it presents no more hazard
than an extra can of oil. -- Steve
USE THE RIGHT GLOVE FOR THE JOB... (050100)
From: Ron Natalie <ron@sensor.com>
Just looking through your article on OCTANE. I should point out that there
is some dangerous information in your part marked "Dark side of TCP." Latex
gloves are entirely inappropriate for TCP, it will go right through them.
Nitrile gloves are what is recommended.
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