Today's Message Index:
----------------------
1. 12:19 AM - Official Usage Guideline [Please Read] [Monthly Posting] (Matt Dralle)
2. 12:35 AM - Re: G-BJWT Finnished! (Mike Mears)
3. 01:13 AM - Re: EGT Readings (Fred Weaver)
4. 06:31 PM - Hey, Where's My List Mail Today...? (Matt Dralle)
5. 06:42 PM - Project (John Downing)
Message 1
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| Subject: | Official Usage Guideline [Please Read] [Monthly Posting] |
DNA: do not archive
--> Tailwind-List message posted by: Matt Dralle <dralle@matronics.com>
Dear Lister,
Please read over the Tailwind-List Usage Guidelines below. The complete
Tailwind-List FAQ including these Usage Guidelines can be found at the
following URL:
http://www.matronics.com/FAQs/Tailwind-List.FAQ.html
Thank you,
Matt Dralle
Matronics Email List Administrator
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Tailwind-List Usage Guidelines
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The following details the official Usage Guidelines for the Tailwind-List.
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Failure to use the Tailwind-List in the manner described below may result
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Tailwind-List Policy Statement
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[This is an automated posting.]
Message 2
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| Subject: | G-BJWT Finnished! |
It's an 0-290 ex-ground power unit. We get about 115-120 Kts at 2300rpm
level at about 2000' . (that must be around 130-140mph) It seems slower
than some of you guys seem to be getting, but we operate out of shorter
strips (1500' - 2000' generally) and the propellor is one that John made
himself. (using a prop. copying machine that he also made himself!). I
don't think the lower cowl is the most efficient design ever, but it's
ours, it's flying, and it's still faster than most of the similar
engined stuff around !
Mike Mears
-----Original Message-----
From: owner-tailwind-list-server@matronics.com
[mailto:owner-tailwind-list-server@matronics.com] On Behalf Of Fred
Weaver
Sent: 01 December 2004 18:23
To: tailwind-list@matronics.com
Subject: Re: Tailwind-List: G-BJWT Finnished!
=09
=09
Mike.... Great looking airplane. Not a bad idea on the door
modification. What engine are you using? Again, good looking job on the
rework.
Weav
----- Original Message -----
From: Mike Mears <mailto:mike.mears@bbc.co.uk>
To: tailwind-list@matronics.com
Sent: Wednesday, December 01, 2004 8:38 AM
Subject: Tailwind-List: G-BJWT Finnished!
Heres three pics of Whiskey Tango after she's been
finished. They're taken at Hucknal, Rolls-Royce's airfield just north of
Nottingham, where they do the noise testing of their big civil jets.
Mike Mears, .............Nottingham.............England.
<<Completed re-cover 1.JPG>> <<Completed re-cover
2.JPG>> <<Completed re-cover 4.JPG>>
http://www.bbc.co.uk/
=09
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Message 3
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| Subject: | Re: EGT Readings |
Paul.... I don't have the EIS yet.. I'm getting it with the EFIS down the road
a bit. Frankly, I would take a look at the spark plugs and see what they look
like. You can tell real quick if they are sooty or White... You are right
about the full throttle enrichment though. When you have the knob all the way
in, the carb sends a little extra gas into the intakes to keep the valves cooler.
When you back off a little, the richness goes away and the temps will tend
to climb. I guess I'm not too much help on this one..
Good Luck,
Weav
----- Original Message -----
From: IslPilot@aol.com
To: tailwind-list@matronics.com ; TailwindForum@yahoogroups.com
Sent: Wednesday, December 01, 2004 6:50 PM
Subject: Re: Tailwind-List: EGT Readings
Curious if any of you are seeing the same indications I am....
On Takeoff with full throttle and showing 2400 rpm I have a 50 degree split in
the EGT's with the front two cylinders running 50 degrees colder than the rear
two cylinders. Max EGT is on #4 at approximately 1540 degrees. (160hp LYC)
Throttle back to 26-2700 rpm and EGT on all cylinders climbs another 100-150
degrees. With as much as a 150 degree split between the front and rear cylinders.
#4 will now be running approximately 1650 to 1700 degrees. Gets me worried,
this is with the mixture always full rich.
Reduce power below 2500 rpm and Max temps come down and split between front and
rear cylinders is more equal.
I am getting all this information to be concerned about with my Grand Rapids
Technologies EIS system with the EGT probes installed approximately 3" below the
exhaust flange.
My hypothesis is that at full throttle the enrichment is such for climb that
everything is within limits. Throttle back below the "full throttle enrichment"
and my main jet might be too small for the power I am pulling. Possibly my
new crossover system is to blame for the split between the front and rear cylinders?
Kent Paser in his book talks about noticing similar indications on his Mustang
Too, but doesn't give me enough detail. His reasoning was that Lycoming optimized
the engine for full throttle and everything below full throttle was a compromise
and you would have to have fuel injection to keep it perfect.
Brian and Fred I believe have EIS systems in their birds, are you seeing anything
like this?
Since I am turning way over red line with the current prop and mods and therefore
pulling more power, do you think I should send the carb in and get it rejetted?
Your thoughts gentleman or possibly a lead on some where to go for an expert
opinion?
Paul
CVX
Message 4
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| Subject: | Hey, Where's My List Mail Today...? |
--> Tailwind-List message posted by: Matt Dralle <dralle@matronics.com>
Dear Listers,
My sincere apologies today! This morning (Thursday) at about 3am the
Matronics Firewall broke. About 9am I was able to bring up an older
firewall and got everything back on line, or so I thought... While the web
pages were working, I had neglected to add a policy that allowed incoming
email to get to the email server (actually the SPAM filtering
appliance). I just checked my email for the first time today and noticed
that I hadn't gotten any List mail today. Hum, I thought, this can't be good!!
Anyway, I'm going to enable incoming email now on the firewall and things
should be back to normal. I'm sure sorry for the oversight. Hopefully
nobody had any withdrawals from lack of List banter today!! :-)
Best regards,
Matt Dralle
Email List Administrator
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
do not archive
Message 5
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0.26 UPPERCASE_25_50 message body is 25-50% uppercase
George; Here is one for you, with your old cowling hanging and getting all
butchered. JohnD
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