tc1917(at)bellsouth.net
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 Posted: Fri May 13, 2011 12:49 am Post subject: Filter |
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My bad. Misspoke 912 2stroke. Using glass microfilter. Never had one fill up and stop like that wasnt that dirty. Did not have six engine outs on this engine. Lifetime off field landings. Lots of different things. Broken props seized engines etc found bad wire in harness. Replaced all wires to egts. Works again. Will watch filters real close for brown stuff now. Thanks Ted Cowan. Slingshot 912 zoom zoom
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On May 13, 2011, at 1:59 AM, Kolb-List Digest Server <kolb-list(at)matronics.com> wrote:
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Total Messages Posted Thu 05/12/11: 15
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Today's Message Index:
----------------------
1. 03:03 AM - egt (Ted Cowan)
2. 05:12 AM - Re: egt (Mike Welch)
3. 05:15 AM - Re: egt (Mike Welch)
4. 05:23 AM - Re: egt (zeprep251(at)aol.com)
5. 06:02 AM - Re: egt (John Hauck)
6. 07:44 AM - Re: finally a flying day with video (gotime242)
7. 08:04 AM - Re: egt (Richard Pike)
8. 09:04 AM - Re: Re: egt (John Hauck)
9. 09:24 AM - Re: Re: egt (John Hauck)
10. 10:05 AM - Insurance (pete)
11. 10:19 AM - Re: Insurance (Dana Hague)
12. 11:58 AM - Re: Re: egt (b young)
13. 01:59 PM - Re: Tornados (bert sparrow)
14. 03:29 PM - Re: Re: Tornados (John Hauck)
15. 03:43 PM - Re: Re: Tornados (John Hauck)
________________________________ Message 1 _____________________________________
Time: 03:03:04 AM PST US
From: "Ted Cowan" <tc1917(at)bellsouth.net>
Subject: egt
well, got egt problems again. seems like every time I get them straightened
out, six months or so later, more trouble. tried all kinds of tests,
switching them, trying different ones, checked here and there. cant seem to
isolate the problem. next I am going to remove the wires from the glass
gauge unit and install a short extension right to the probes. this should
tell me something. went flying and everything was cool and all of a sudden
a bobble in the engine. did it again and lost power. was able to keep it
running in order to have a little power on off field landing. (sixth time I
have had an emergency landing off field) landed okay and called my wife to
come with the trailer. the micro filter just slammed plain shut on me while
flying. never seen nothing like this. could not even blow through it. no
light, no air and could not clean it. don't know what clogged it. replace
it and the secondary filter and everything is fine. now, back to the egt.
I have a flashing light when something is wrong on the temps. the egt should
have lighted up or at least shown a lean condition when it ran out of gas
in the carbs. was wondering what do I need them for? are the egts really
necessary? Anyone running without them. I remember airwolf telling me they
do not recommend them on 912s being as they are 2 strokers. any comments?
Ted Cowan, Slingshot 912 zoom zoom
________________________________ Message 2 _____________________________________
Time: 05:12:38 AM PST US
From: Mike Welch <mdnanwelch7(at)hotmail.com>
Subject: RE: egt
> the micro filter just slammed plain shut on me while
> flying.
> I have a flashing light when something is wrong on the temps. the egt sho
uld
> have lighted up or at least shown a lean condition when it ran out of gas
> in the carbs. was wondering what do I need them for? are the egts really
> necessary? Anyone running without them. I remember airwolf telling me the
y
> do not recommend them on 912s being as they are 2 strokers. any comments?
> Ted Cowan=2C Slingshot 912 zoom zoom
Ted=2C
Comments? Here's a couple=3B
I would use that microfilter again for NO amount of
money. I'd take that sucker apart and find out WHY it slammed shut.
Is an EGT necessary? Some would say no=2C some say yes. Personally=2C
I LIKE knowing how well my engine is running (or how poorly). I'd
say=2C "if your engine always runs perfect=2C and never=2C ever has any pro
blems=2C
don't worry about an EGT."
Lastly=2C tell the guy at Airwolf he should refrain from giving advice on
912s 2 strokes.......'cause thar ain't any such critter!!'
Mike Welch
________________________________ Message 3 _____________________________________
Time: 05:15:28 AM PST US
From: Mike Welch <mdnanwelch7(at)hotmail.com>
Subject: RE: egt
Last response was supposed to say "WOULDN'T use that filter". Note to
self=3B proof-read BEFORE you push 'send'. At any rate=2C I'm sure you go
t
the idea.
Mike
________________________________ Message 4 _____________________________________
Time: 05:23:19 AM PST US
Subject: Re: egt
From: zeprep251(at)aol.com
Ted,
It is possible you have too fine a filter?I have seen a filter remove fuel
additives and clog.It was a teflon additive that could pass through the car
b and jetting with out problems but closed the filter.In theory,other than
water,any particle smaller than the smallest orifice in the carb should not
give you trouble,and that may be judged by the mesh of the filter screen t
hat surrounds the main jet.
The number of power failures you've had is amazing.Have you been able to
locate the specific cause for each of them?I have a friend with a 912s on
a mk3c that has had at least 2 events of lost power,fuel starvation in both
cases ,but he has not identified the root cause for either.But he has stat
ed that both times the fuel level in the tanks was close to half,but he fai
led to engage the aux pump either time.
It takes a few seconds for the egt probe to sense change.You may have had
not enough time to register the change on a 4 stroke.
Could you give me some insight into your other power failures?
Thanks,G.Aman MK3C jabiru2200A 600+hrs .
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