Today's Message Index:
----------------------
1. 06:38 AM - Re: FireFly -> MZ 34 Update (Thom Riddle)
2. 09:30 AM - Re: Mold release ???? (Fredrick Kerfoot)
3. 09:45 AM - Re: Mark II Engine run up (GeoB)
4. 10:45 AM - cowl (Nelson, Craig)
5. 12:45 PM - Re: cowl (John Hauck)
6. 01:50 PM - New Glass On Center Section (Steve Simmons)
7. 02:43 PM - Re: New Glass On Center Section (robert bean)
8. 02:52 PM - Re: New Glass On Center Section (John Hauck)
9. 03:04 PM - Re: New Glass On Center Section (Jim Kmet)
10. 03:12 PM - Re: cowl (Nelson, Craig)
11. 03:34 PM - Re:New Glass (Steve Simmons)
12. 03:59 PM - Re: cowl (John Hauck)
13. 06:44 PM - Re: cowl (Nelson, Craig)
14. 06:59 PM - cowl (Nelson, Craig)
Message 1
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| Subject: | Re: FireFly -> MZ 34 Update |
Jack,
As you know, you will likely see a measurable speed increase even with less power
by moving the engine below the wing. When I was giving instruction in a big
wing Challenger I was continually amazed at how much faster it is than Kolbs
with equivalent power. Getting the engine behind the fuselage should make a big
difference in drag and therefore fuel economy. Keep us posted on this very interesting
project.
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
Consistency requires you to be as ignorant today as you were a year ago.
- Bernard Berenson
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=277153#277153
Message 2
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| Subject: | Mold release ???? |
> Subject: Kolb-List: Mold release ????
Rick.
Check out Fiberglass Coatings Inc. www.fgci.com They have a how to sec
tion on their web site. They supply a lot of the boat builders in the Tamp
a Bay area.
I have used their procedures and products on a Velocity project with good r
esults. Just be sure your plug is shiny-smooth and sealed before you start
on mold and you should do OK.
_________________________________________________________________
Hotmail: Free=2C trusted and rich email service.
Message 3
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| Subject: | Re: Mark II Engine run up |
lcottrell wrote:
> Your best bet is to stay in the plane
Duuh. Do you not believe in redundancy? And if you are by yourself, how do you
accomplish your tasks that require you to be outside?
I agree with your further points, it just sounds like you didn't unnerstan what
I was trying to say.
--------
GeoB
"Members of Congress should be compelled to wear uniforms like NASCAR drivers,
so we could identify their corporate sponsors"
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=277192#277192
Message 4
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<<DSC_1983.JPG>> De <<DSC_2463.JPG>> nn <<DSC_2465.JPG>> is
<<DSC_2469.JPG>>
<<DSC_2471.JPG>> I have enjoyed Ricks pictures of the cowl project, it
certainly was fun for me. My hat is off to any one that dives into a
project and sees it through. Rick it looks great, The undisturbed air
really is a plus and the cowl becomes a lifting body. I had trouble here
in Arizona on 110 degree weather without the cowl ....if the tower had
me hold on the ground for long periods of time the engine would
overheat. On one occasion whale idling on the ground I overheated and
blew all the water out... now with the cowl I can idle all day long on
any Arizona summer day..I had to make a cowl flap for cold days (like we
are having today.. a balmy 50 degrees) to get operating
temperatures...... I have molds and would make a cowl if anyone was
interested.... it will not fit a VW engine it will only work on a rotax
912
Uncle craig
Message 5
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On one occasion whale idling on the ground I overheated and
blew all the water out... now with the cowl I can idle all day long on
any Arizona summer day..I had to make a cowl flap for cold days (like we
are having today.. a balmy 50 degrees) to get operating
temperatures......
912
Uncle craig
Uncle Craig/Gang:
Very unusual for a 912UL or ULS to overheat at idle, even on 110F days.
Normally takes a long time to get the engine oil temp up to the required
120F prior to going full power for take off.
Do you have accurate performance figures of your aircraft with and without
the cowling? I'd be interested in seeing what the actual performance
changes were.
john h - Freezing in Alabama.
mkIII
Message 6
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| Subject: | New Glass On Center Section |
I am replacing the Lexan in the center section on my Mark III Classic,
the
rivets I drilled out was Steel. The steel rivets was going into aluminum
which is a bad ideal due to galvanic corrosion. I cannot determine from
the
plans what type rivets to use, the plans just gives the size 1/8 by 1/8
or
1/8 by =BC if you go through 2 thickness. Can anyone set me straight on
this.
I think they should be aluminum.
Message 7
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| Subject: | Re: New Glass On Center Section |
I know I'll get some flak from this but those wimpy fabric rivets will
do just fine. And look good too.
I think Fastenal has them.
BB
On 11, Dec 2009, at 4:49 PM, Steve Simmons wrote:
> I am replacing the Lexan in the center section on my Mark III Classic,
the rivets I drilled out was Steel. The steel rivets was going into
aluminum which is a bad ideal due to galvanic corrosion. I cannot
determine from the plans what type rivets to use, the plans just gives
the size 1/8 by 1/8 or 1/8 by =BC if you go through 2 thickness. Can
anyone set me straight on this. I think they should be aluminum.
>
>
>
>
Message 8
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| Subject: | Re: New Glass On Center Section |
Steve S:
The Kolb kits use SS rivets. You can get them from Travis at The New Kolb
Aircraft Co. If you need his number, let me know.
No problem with galvanic corrosion, but we do have a difficult time drillin
g them out when it comes time to replace.
Last time I rebuilt the center section of my MKIII, I substituted .025 alum
inum sheet for the lexan. That is about the third time I have had to rebui
lt the center section because the lexan fails after a period of time. If y
ou have enough of the old lexan in tact, you can use it for a pattern to ma
ke the sheet metal panels.
I use hardware store aluminum rivets for the center section, and other part
s that are time replacements, i.e., windshield, door glass, etc.
john h
mkIII
I am replacing the Lexan in the center section on my Mark III Classic, th
e rivets I drilled out was Steel. The steel rivets was going into aluminum
which is a bad ideal due to galvanic corrosion. I cannot determine from the
plans what type rivets to use, the plans just gives the size 1/8 by 1/8 o
r 1/8 by =BC if you go through 2 thickness. Can anyone set me straight on t
his. I think they should be aluminum.
Message 9
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| Subject: | Re: New Glass On Center Section |
Steve, Bob Beans advice will work, but FYI, The earlier Kolb aircraft
kits came out with all Steel rivets, they changed to all Stainless
steel around 1995, so that`s what I used then. However, when rebuilding
my center section, I used a FEW SS rivets in what I considered key
stress areas, & aluminum everywhere else. My center section is an area
where the center section lexan may be subject to alot of "cosmetic"
stress.., so Lexan replaceability was a concern of mine. (SS rivets are
difficult to drill out.)
This may make things as clear as mud for you, but, this is just what I
did.
Jim Kmet
Cookeville, TN
MK-3C 912
----- Original Message -----
From: Steve Simmons
To: Kolb List
Sent: Friday, December 11, 2009 3:49 PM
Subject: Kolb-List: New Glass On Center Section
I am replacing the Lexan in the center section on my Mark III Classic,
the rivets I drilled out was Steel. The steel rivets was going into
aluminum which is a bad ideal due to galvanic corrosion. I cannot
determine from the plans what type rivets to use, the plans just gives
the size 1/8 by 1/8 or 1/8 by =BC if you go through 2 thickness. Can
anyone set me straight on this. I think they should be aluminum.
Message 10
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John my radiator has always been mounted in front of ther engine not
much air moving through it at idle...with the cowl air is moving at
idle. I feel the airfoil on our kolbs realy is not about speed. that
said the clean air going through the prop maks less drag. With the strut
farings and the cowl my cruse was 90 at 5300. I am yet to see what the
faring on the gear legs and wheel pants do. I have not had much time to
get it together since the pannel rebuild. I started it Saturday.. I have
an artificial horizion sensor problem..plan to get the bugs out it and
start it again tomorrow...hopefully fly B4 Christmas
-----Original Message-----
Uncle craig
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of John Hauck
Sent: Friday, December 11, 2009 1:45 PM
Subject: Re: Kolb-List: cowl
On one occasion whale idling on the ground I overheated and
blew all the water out... now with the cowl I can idle all day long on
any Arizona summer day..I had to make a cowl flap for cold days (like we
are having today.. a balmy 50 degrees) to get operating
temperatures......
912
Uncle craig
Uncle Craig/Gang:
Very unusual for a 912UL or ULS to overheat at idle, even on 110F days.
Normally takes a long time to get the engine oil temp up to the required
120F prior to going full power for take off.
Do you have accurate performance figures of your aircraft with and
without
the cowling? I'd be interested in seeing what the actual performance
changes were.
john h - Freezing in Alabama.
mkIII
Message 11
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Thanks to all I do like the Ideal of using the sheet metal but I have
already bought the Lexan next time I will use the metal
Message 12
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> John my radiator has always been mounted in front of ther engine not
> much air moving through it at idle...with the cowl air is moving at
> idle.
> Uncle craig
Uncle Craig/Gang:
Get that MKIII put back together and flying. MV will be here before you
know it, 5 months on my Alabama calendar.
John W had his radiator mounted in front of the engine. Usually, had a
couple wraps of tape on each side of the radiator to keep the temps up,
summer and winter. I asked him why he didn't go to a smaller radiator.
Said he already had that one mounted. It was easier to tape than replace.
;-)
My mkIII will do 90 mph at 5300, no engine cowl, no gear leg farings, and
800X6 tires with no wheel pants.
What are you flying with an attitude indicator for? There is no weather in
Arizona. ;-)
Are you using a Titan exhaust system with you own silencer? I remember you
having a problem during testing with the silencer.
I replaced the Rick Thomason STE exhaust system with a new Titan system
recently. I have flown my present 912ULS, since new, with the STE system.
After 413.8 hours, the baffles have come loose in the left silencer. This
was causing high engine oil temps and loss of power. With the new exhaust
system, I feel like I have gotten another new engine. What a difference a
good breathing exhaust system makes.
I'll be ready to race at MV. ;-)
john h
mkIII - 2,980.5 hours
912ULS - 413.8 hours
Message 13
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Uncle Craig/Gang:
Get that MKIII put back together and flying. MV will be here before you
know it, 5 months on my Alabama calendar.
John
Good to hear from you
Its going together John... I've messed around 4 8 years and it is time
to fly. I know I don't need an artificial horizon in Arizona or any
where I would fly ..but it just looked aircrafty. Had to have it. My
exhaust is the titan one you had before. mine has a different muffler.
Ya I did have trouble with it... it was welded up by a motor cycle guy
rather than the welder that did my tank, he was too busy to weld the
muffler and I should have waited for him... the welds the motor cycle
guy did not penetrate and he ground most of what was, off... the back
of the muffler and exhaust tube went through the prop slamming it into
the flap. ... I wonder if the new titan one would fit under my cowl...I
admire Rick for his project those things get a guy going... I had fun
doing all the stuff I did to my plane, the reason I did it was because I
can..... Not really to improve the design....I did it because I like
the way it looks. The kolb design to me is the spirit of true flight.
Great visibility!!!closest thing to a helicopter without the maintenance
or disk, slow enough to have fun, fast enough to go across the country
and almost vertical takeoff and landing...but john I have to tell ya,
you and lots of other guys are doing it...FLYING AND ENJOYING Your Kolbs
.....it's time to stop the tinkering and fly!! I like your KISS rule I
could have been flying...let's see what we can do at MV... I'll race you
for breakfast....if I don't fly to MV this year I'm not going
Uncle craig
15 hrs flying
2,000,000 hrs fussing, tinkering and building--enough is enough
Message 14
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<<DSC_1513.JPG>> Uncle Craig/Gang:
Get that MKIII put back together and flying. MV will be here before you
know it, 5 months on my Alabama calendar.
John
Good to hear from you
Its going together John... I've messed around 4 8 years and it is time
to fly. I know I don't need an artificial horizon in Arizona or any
where I would fly ..but it just looked aircrafty. Had to have it. My
exhaust is the titan one you had before. mine has a different muffler.
Ya I did have trouble with it... it was welded up by a motor cycle guy
rather than the welder that did my tank, he was too busy to weld the
muffler and I should have waited for him... the welds the motor cycle
guy did not penetrate and he ground most of what was, off... the back
of the muffler and exhaust tube went through the prop slamming it into
the flap. ... I wonder if the new titan one would fit under my cowl...I
admire Rick for his project those things get a guy going... I had fun
doing all the stuff I did to my plane, the reason I did it was because I
can..... Not really to improve the design....I did it because I like
the way it looks. The kolb design to me is the spirit of true flight.
Great visibility!!!closest thing to a helicopter without the maintenance
or disk, slow enough to have fun, fast enough to go across the country
and almost vertical takeoff and landing...but john I have to tell ya,
you and lots of other guys are doing it...FLYING AND ENJOYING Your Kolbs
.....it's time to stop the tinkering and fly!! I like your KISS rule I
could have been flying...let's see what we can do at MV... I'll race you
for breakfast....if I don't fly to MV this year I'm not going
Uncle craig
15 hrs flying
2,000,000 hrs fussing, tinkering and building--enough is enough
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