Today's Message Index:
----------------------
1. 05:19 AM - Re: Building a trailer/maybe some ideas... (Thom Riddle)
2. 06:28 AM - Re: ! Re: Landing video Kolb MK III (Richard & Martha Neilsen)
3. 06:39 AM - Re: More flying videos (grantr)
4. 07:10 AM - Re: C90 Brakes (Richard & Martha Neilsen)
5. 07:34 AM - Brake basics (Mike Welch)
6. 08:50 AM - Re: Monument Vallley - Gouldings Campground (The Kuffels)
7. 12:01 PM - Re: Brake basics ()
8. 12:33 PM - Dynamic Air Pressure Filter Housing (Jack B. Hart)
9. 02:26 PM - Re: Dynamic Air Pressure Filter Housing (Dana Hague)
10. 06:08 PM - Re: Dynamic Air Pressure Filter Housing (Richard & Martha Neilsen)
11. 06:21 PM - Re: Dynamic Air Pressure Filter Housing (Jack B. Hart)
12. 06:51 PM - Re: Dynamic Air Pressure Filter Housing (Dana Hague)
13. 07:06 PM - Re: Dynamic Air Pressure Filter Housing (Jack B. Hart)
Message 1
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Subject: | Re: Building a trailer/maybe some ideas... |
If you trailer fans want one but don't want to build one, mine is for sale, and
can be seen at
http://riddletr.googlepages.com/flylite%2Cinc.2
Scroll down to the photo and click on the TEXT header above the photo.
I'm in a generous mood so you might get it pretty cheap. Make an offer.
--------
Thom Riddle
N1208P RANS S6S, Tailwheel, 912UL
N197BG FS1/447
--------------------
It is by universal misunderstanding that all agree. For if, by ill luck, people
understood each other, they would never agree.
- Charles Baudelaire
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=223307#223307
Message 2
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Subject: | Re: ! Re: Landing video Kolb MK III |
Bill
I'm not getting any younger either. I can still hear fairly well and use
the headphones to keep my hearing.
Yes the headphones are only plugged into my intercom. The sigtronics
speakers are also plugged in with the Sony headphones plugged into the
passenger port. I use a headphone to mp3 adapter and a one into two
splitter (both from Radio Shack) so that my passengers can use a set of
Sony headphones under their headphones. I have modified the Sony
headsets. I scored the plastic handle/stem and broke it off to make the
Sigtronics headsets fit better.
I purchased one Sony headset at Target and one online. They make two or
three models and I have the cheapest and they work super.
Rick Neilsen
Redrive VW powered MKIIIC
----- Original Message -----
From: WhiskeyVictor36@aol.com
To: kolb-list@matronics.com
Sent: Tuesday, January 06, 2009 8:11 PM
Subject: Re: Kolb-List: ! Re: Landing video Kolb MK III
In a message dated 12/29/2008 12:48:51 P.M. Eastern Standard Time,
NeilsenRM@comcast.net writes:
I have a Sigtronics head set with the Headsets ANR kit in them. They
help a
bunch but not enough so for a while I flew with ear plug also which
caused
hearing problems when tying to communicate. Lately I have been using
Sony
MDR-EX51LP headphones (like the MP3 players use) under my Sigtronics
with
the ANR on. These things are super for voice clarity and reduce
outside
noise almost as much as the foam ear plugs. No more ear ringing
after
flying.
Hi Rick,
I'm older than John h and I suppose my hearing is worse than his.
Anyway, thought I might give your idea using the Sony headphones a try.
But where did you get them? I've tried a couple of stores to no avail.
And do I understand you correctly that they are not wired into your
Sigtronics set, but just worn as ear plugs with the ANR turned on?
Thanks for any help you can give.
Bill Varnes
Original Kolb FireStar
Getting older every day!!
Audubon NJ
Do Not Archive
-------------------------------------------------------------------------
-----
New year...new news. Be the first to know what is making
Message 3
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Subject: | Re: More flying videos |
Cristal,
It is a local R/c hobby shop that mostly sells r/c airplane. I am big into the
r/c planes as well. I think the field is 1600 feet. They used to have a piper
cub on the field however the shop owners brother had an engine failure I think
2 summers ago and crashed it. He is ok now. Its a nice private grass strip
about 2 miles from ACJ.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=223327#223327
Message 4
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Rick
Wow I thought you were selling your plane. It's super your still working on
it.
I have the stock Matco brakes and they will hold the plane at least till the
tail comes up with the stock wheel size. A bigger issue is how the brake
peddle to master cylinder leverage is configured. With toe peddles you are
pushing against the rudder peddles and the bigger concern the rudder cables
during brake activation. I have the heal peddles but I understand Paul Petty
had a arrangement with more mechanical advantage. This may be the same set
up that Mark German developed.
Rick Neilsen
Redrive VW Powered MKIIIC
----- Original Message -----
From: "Rick Lewis" <cktman@hughes.net>
Sent: Monday, January 05, 2009 7:28 PM
Subject: Kolb-List: C90 Brakes
>
> I am about to order the brakes for my Kolb M3X and am wondering if the C90
> brakes, that Kolb offers, is adequate. Looking at them they seem kinda of
> wimpy. What are the pro and cons? I really like the neat installation
> but wonder if they will do the job.
>
> Rick Lewis
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=223051#223051
>
>
> Attachments:
>
> http://forums.matronics.com//files/kolbs_yellow_planes_consturction_007_132.jpg
>
>
>
Message 5
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|
Kolb people,
If anyone is interested, Grove Brake Co, and Matco, too, for that matter, have
some useful
brake design suggestions on their websites. Such things as pedal geometry, Kenetic
Energy of
your plane at landing speed, etc. Here is Grove's page:
http://www.groveaircraft.com/brakedesign.html
I used their K.E. formula to calculate my MkIII's kentic energy at landing.
Looks like I'm in good shape.
Theoretically, my disc brakes should stop a C-130. Either that, or I missed a
decimal point. Hmmm?
Mike Welch
Mk130
_________________________________________________________________
Windows LiveTM: Keep your life in sync.
http://windowslive.com/howitworks?ocid=TXT_TAGLM_WL_t1_allup_howitworks_012009
Message 6
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Subject: | Re: Monument Vallley - Gouldings Campground |
do not archive
John Hauck: << Larry and Karen Cottrell put their Taj Mahal complex up in
the
SE corner of the tent camping area. >>
OK, will email Matilda and ask our site to be as close to the tent camping
area as possible.
John Hauck: << Guess you all got the new airplane flying. >>
Boyd Young: << Are you going to fly or drive in this year >>
Won't be flying down. Progress on the Sportsman is still slow, my stamina
is not yet up to par. We are towing Betty's brand new Taj Mahal (all 16
feet of it) down and meeting up with Betty's sister and her husband. Plan
to arrive Tuesday the 12th and depart Tuesday the 19th. Will be bringing
some of my homebrew beer and the in-laws will bring some of their home-made
wine. First come, first served.
Tom Kuffel
Message 7
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Subject: | Re: Brake basics |
I use the go kart brakes that Azusa engineering sells. They stop the plane after
a bit and they are good enough to put the nose on the ground which I do to
get a full power run up. They do not cost much, easy to install and seem to work
good in all hard surface situations.
Message 8
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Subject: | Dynamic Air Pressure Filter Housing |
Kolbers,
In most tractor engine configurations, ram or dynamic air pressured air is
fed into the carburetor. With a pusher propeller and the engine mounted so
that the carburetor is above the wing the carburetor inlet is being fed with
lower static air pressure than can be found below the wing. Last summer, I
ran an experiment where I connected the carburetor inlet with a long tube to
the air filter mounted on the main spar cross through at the root tube. One
flight told me that I could not tolerate the inlet noise that close to my
head. Also, the weight of the carburetor adapter and connecting tubing was
a severe weight penalty.
I have been grounded by winds, cold temperatures, snow, and ice so I began
re thinking the problem. A dynamic air pressure scoop around the air filter
seemed to be the way to go. The result of this thinking can be seen at:
http://www.thirdshift.com/jack/firefly/firefly147.html
To keep the weight down, I attached it directly to the air filter. This
should more than make up for the 1.0 to 1.5 inches of water air filter loss
that was found under cruise conditions. When the weather improves, I will
be able to measure the carburetor static inlet pressure. The first test
will be with the opening pointed upward or downward to simulate scoop inlet
static pressure. Then the second test will run with the opening pointed
forward. I really do not expect a huge improvement, but when you have only a
few horses, it is a shame to waste any of them.
Jack B. Hart FF004
Winchester, IN
Message 9
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Subject: | Re: Dynamic Air Pressure Filter Housing |
At 03:34 PM 1/7/2009, Jack B. Hart wrote:
>...With a pusher propeller and the engine mounted so
>that the carburetor is above the wing the carburetor inlet is being fed with
>lower static air pressure than can be found below the wing....
>...A dynamic air pressure scoop around the air filter
>seemed to be the way to go....This
>should more than make up for the 1.0 to 1.5 inches of water air filter loss
>that was found under cruise conditions...
About 0.14 inches of mercury (1.9 inches of water) at 55 knots, or less
than 1% of 1 atmosphere; 1/2HP for a 50HP engine (since output power is
roughly proportional to intake air pressure)... seems unlikely it'd be
noticeable.
Can't hurt though, unless it comes loose and goes through the prop...
-Dana
--
In some cultures what I do would be considered normal.
Message 10
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Subject: | Re: Dynamic Air Pressure Filter Housing |
Jack
Nice work. I would like to make two suggestions. One you may want to allow
for a way for water to get out of the scoop. If you get in a rain storm you
might flood the engine. Also why not add a long taper to the back of the
scoop to cut drag.
I have had similar ideas for my VW. The big Webber air cleaners have
considerable drag that I don't need. Also the small boost in air pressure
would give me more horse power. I have been mulling over designs for some
time and may steal some of your design.
Rick Neilsen
Redrive VW powered MKIIIC
----- Original Message -----
From: "Jack B. Hart" <jbhart@onlyinternet.net>
Sent: Wednesday, January 07, 2009 3:34 PM
Subject: Kolb-List: Dynamic Air Pressure Filter Housing
>
> Kolbers,
>
> In most tractor engine configurations, ram or dynamic air pressured air is
> fed into the carburetor. With a pusher propeller and the engine mounted
> so
> that the carburetor is above the wing the carburetor inlet is being fed
> with
> lower static air pressure than can be found below the wing. Last summer,
> I
> ran an experiment where I connected the carburetor inlet with a long tube
> to
> the air filter mounted on the main spar cross through at the root tube.
> One
> flight told me that I could not tolerate the inlet noise that close to my
> head. Also, the weight of the carburetor adapter and connecting tubing
> was
> a severe weight penalty.
>
> I have been grounded by winds, cold temperatures, snow, and ice so I began
> re thinking the problem. A dynamic air pressure scoop around the air
> filter
> seemed to be the way to go. The result of this thinking can be seen at:
>
> http://www.thirdshift.com/jack/firefly/firefly147.html
>
> To keep the weight down, I attached it directly to the air filter. This
> should more than make up for the 1.0 to 1.5 inches of water air filter
> loss
> that was found under cruise conditions. When the weather improves, I will
> be able to measure the carburetor static inlet pressure. The first test
> will be with the opening pointed upward or downward to simulate scoop
> inlet
> static pressure. Then the second test will run with the opening pointed
> forward. I really do not expect a huge improvement, but when you have only
> a
> few horses, it is a shame to waste any of them.
>
> Jack B. Hart FF004
> Winchester, IN
>
>
>
Message 11
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Subject: | Re: Dynamic Air Pressure Filter Housing |
At 05:21 PM 1/7/09 -0500, you wrote:
>
>About 0.14 inches of mercury (1.9 inches of water) at 55 knots, or less
>than 1% of 1 atmosphere; 1/2HP for a 50HP engine (since output power is
>roughly proportional to intake air pressure)... seems unlikely it'd be
>noticeable.
>
>Can't hurt though, unless it comes loose and goes through the prop...
>
Dana,
I believe the pressure change will be greater than 1.5 inches of water, as
the air is passing through the propeller is much greater than IAS. I won't
know what it is until I measure it, but if air velocity past the carburetor
has to be much higher than 55 knots IAS.
Jack B. Hart FF004
Winchester, IN
Message 12
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Subject: | Re: Dynamic Air Pressure Filter Housing |
At 09:22 PM 1/7/2009, Jack B. Hart wrote:
>I believe the pressure change will be greater than 1.5 inches of water, as
>the air is passing through the propeller is much greater than IAS. I won't
>know what it is until I measure it, but if air velocity past the carburetor
>has to be much higher than 55 knots IAS.
Good point... though I don't know how much faster it'll be on the upstream
side of the prop, as compared to behind the prop. Be interesting to see.
-Dana
--
Come to think of it, there already are a million monkeys at a million
typewriters, and the Internet is _NOTHING_ like Shakespeare!
Message 13
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Subject: | Re: Dynamic Air Pressure Filter Housing |
At 09:04 PM 1/7/09 -0500, you wrote:
>
>Jack
>
>Nice work. I would like to make two suggestions. One you may want to allow
>for a way for water to get out of the scoop. If you get in a rain storm you
>might flood the engine. Also why not add a long taper to the back of the
>scoop to cut drag.
>
Rick,
I considered the rain/water problem. If you look at the last photo on the
page, you will see a series of little holes along the corner or edge of the
assembly. These are the relief holes for bending the tabs along the edge of
the main body. I did not seal them so that water could leak out. Later if
an oil slobbering problem develops, I will seal them and add a drain or
relief tube so that I can run the oil and/or water to a catch bottle. This
will prevent oil spatter on the tail surfaces.
I did consider streamlining the scoop, but at this time I am more concerned
with the added weight. After, I get done testing and if it proves to be
worth while, I may stream line it with foam that is covered with organza
fabric. I worry about too much weight hanging out from the carburetor boot.
Jack B. Hart FF004
Winchester, IN
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