Today's Message Index:
----------------------
1. 06:20 AM - Streamlining struts (Richard Girard)
2. 08:22 AM - Kolb Video (Bill Vincent)
3. 08:28 AM - Re: Re: Kolb-List Real Airplane :-) (Richard & Martha Neilsen)
4. 09:19 AM - Re: Streamlining struts (robert bean)
5. 09:33 AM - Re: Kolb Video (robert bean)
6. 10:11 AM - Re: Streamlining struts (Jeremy Casey)
7. 10:40 AM - Re: Kolb Video (JetPilot)
8. 12:08 PM - Re: Kolb Video (John Hauck)
9. 03:25 PM - Twinstar (huronflyer)
10. 06:10 PM - Re: Kolb Video (Bill Vincent)
11. 06:24 PM - Fw: Re: Kolb Video (Bill Vincent)
12. 06:28 PM - Who make a good Voltage Regulator/Rectifier? (The BaronVonEvil)
13. 07:26 PM - Re: Who make a good Voltage Regulator/Rectifier? (Richard Girard)
14. 07:34 PM - Re: Who make a good Voltage Regulator/Rectifier? (Richard Pike)
15. 07:35 PM - Re: Who make a good Voltage Regulator/Rectifier? (Richard Girard)
16. 08:20 PM - Re: Who make a good Voltage Regulator/Rectifier? (Larry Cottrell)
17. 09:19 PM - Re: Who make a good Voltage Regulator/Rectifier? (HShack@aol.com)
18. 09:34 PM - Re: Re: Kolb Video (Tony Oldman)
19. 10:07 PM - Re: Who make a good Voltage Regulator/Rectifier? (The BaronVonEvil)
Message 1
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| Subject: | Streamlining struts |
I've published this method before, but the conversation is current again so
I'll reprise. My friend Ralph Senter invented this back in the day when hang
gliders had spars exposed to the wind.
Get a piece of .015 to .020 Mylar sheet 6 times as wide as the circumference
of the strut you wish to streamline and long enough to go end to end. Fold
in half on the short dimension, crease lightly and stick it together with
double sided sail makers seam tape. Sew along the long edge. Ralph used a
zig zag stitch so the stress was spread out better than a straight stitch.
Slip this sleeve over your strut and it's streamlined. No structural issues
and far cheaper than buying new metal.
Sheet mylar can be had from blueprint reproduction business's or found on
the web.
Rick Girard
Message 2
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Hi Gang
I already sent this video before, but for those who couldn't open it, I
finally figured out how to load it into Youtube!
This is a video of me doing one wheel taxiing in October 2000; I think
it proves how ground stable Holmer Kolbs design really is.
Many times I have kept it on one wheel with the tailwheel up all the way
down the runway with sometimes grass stains on the ends of my wings.
In the air it is even more stable and fun to fly!
There is sound only near the end of the video.
Please let me know if the video does not work ... this was my first
attempt at Youtube.
Thank you
http://www.youtube.com/watch?v=qEizyPaLCL4
Bill Vincent
Firestar II
Upper Peninsula of Michigan
Do Not Archive
Message 3
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| Subject: | Re: Kolb-List Real Airplane :-) |
Mike
I have streamlined aluminum struts with jury struts on MKIIIC. My plane may
be one of the last MKIIIs with this arrangement. Shortly after I rigged my
plane there was a change where a tube was run the full length in side of the
aluminum strut so that the jury strut was no longer needed. I fold my MKIII
and the jury strut isn't a problem other than the additional connections.
Rick Neilsen
Redrive VW powered MKIIIC
----- Original Message -----
From: "JetPilot" <orcabonita@hotmail.com>
Sent: Wednesday, January 16, 2008 12:50 AM
Subject: Kolb-List: Re: Kolb-List Real Airplane :-)
>
> I really like your Jury struts, that gives a lot more strength in
> compression. The only reason I did not copy them ( Like I did a lot of
> other things on your plane [Wink] ) was because I don't know how I would
> have made the jury struts work the the wing folding. Initially I was
> planning on keeping the plane stored in a trailer.
>
> Mike
>
> --------
> "NO FEAR" - If you have no fear you did not go as fast as you
> could have !!!
>
> Kolb MK-III Xtra, 912-S
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=158482#158482
>
>
>
Message 4
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| Subject: | Re: Streamlining struts |
I recently bought a replacement roof panel for a shed because of wind
damage.
The old one was the corrugated translucent fiberglass. The new one is
polycarbonate.
If you could find a piece of that in flat sheet it is extremely tough
and flexible.
-just thinking out loud.
BB
On 16, Jan 2008, at 9:18 AM, Richard Girard wrote:
> I've published this method before, but the conversation is current
> again so I'll reprise. My friend Ralph Senter invented this back in
> the day when hang gliders had spars exposed to the wind.
> Get a piece of .015 to .020 Mylar sheet 6 times as wide as the
> circumference of the strut you wish to streamline and long enough
> to go end to end. Fold in half on the short dimension, crease
> lightly and stick it together with double sided sail makers seam
> tape. Sew along the long edge. Ralph used a zig zag stitch so the
> stress was spread out better than a straight stitch. Slip this
> sleeve over your strut and it's streamlined. No structural issues
> and far cheaper than buying new metal.
> Sheet mylar can be had from blueprint reproduction business's or
> found on the web.
>
> Rick Girard
>
>
Message 5
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Very nice Bill. My strip is a little too lumpy for that.
BB
On 16, Jan 2008, at 11:19 AM, Bill Vincent wrote:
> Hi Gang
> I already sent this video before, but for those who couldn't open
> it, I finally figured out how to load it into Youtube!
> This is a video of me doing one wheel taxiing in October 2000; I
> think it proves how ground stable Holmer Kolbs design really is.
> Many times I have kept it on one wheel with the tailwheel up all
> the way down the runway with sometimes grass stains on the ends of
> my wings.
> In the air it is even more stable and fun to fly!
> There is sound only near the end of the video.
> Please let me know if the video does not work ... this was my first
> attempt at Youtube.
> Thank you
>
> http://www.youtube.com/watch?v=qEizyPaLCL4
>
> Bill Vincent
> Firestar II
> Upper Peninsula of Michigan
> Do Not Archive
>
> www.matronics.com/Navigator?Kolb-List_-
> ============================================================ _-
> forums.matronics.com_-
> ============================================================ _-
> contribution_-
> ===========================================================
>
Message 6
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| Subject: | Streamlining struts |
<snip>
The new one is polycarbonate.
If you could find a piece of that in flat sheet it is extremely tough
and flexible.
-just thinking out loud.
BB
<snip>
polycarbonate is the generic name for LEXAN.same as your windshield.
Jeremy Casey
Message 7
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That is pretty amazing. I wonder if my MK III would do that ? I have seen this
video before, but every time I even think about doing this, all I can imagine
are ground loops, so I have never tried it.
How much crosswind can you land in ?
Mike
--------
"NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
Kolb MK-III Xtra, 912-S
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=158594#158594
Message 8
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Hi Bill V:
You make it look easy.
Imagine my surprise when I clicked on Kolb MKIII Flyby and got this:
http://www.youtube.com/watch?v=4jfWIjFYDYA&feature=related
The airplane looks familiar, but it sounds more like a P-51. ;-)
john h
mkIII
Message 9
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What was the last year the Twinstar was made by Kolb?
Through what years was it in production: 19xx - 19xx.
Appreciate the information.
Dave
DO NOT ARCHIVE
--------
DO NOT ARCHIVE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=158650#158650
Message 10
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Hi John
Next time Anna and I are at the EAA in Oshkosh and I hear a P-51 going
over, I am going to look closer because it might be you :-)
Bill Vincent
Do Not Archive
Hi Bill V:
You make it look easy.
Imagine my surprise when I clicked on Kolb MKIII Flyby and got this:
http://www.youtube.com/watch?v=4jfWIjFYDYA&feature=related
The airplane looks familiar, but it sounds more like a P-51. ;-)
john h
mkIII
Message 11
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Hi Mike
Luckily I have never ground looped my Kolb; but I have ground looped my
T-Bird a couple of times.
If you do try to do a one wheel; I recommend that you are on grass and that
you keep the right wheel down; this is because of the rotation of the prop.
When I start out I give it right stick to get the left wheel up, but then I
usually end up giving it a little left stick and right rudder "cross
control"....it's like anything else it takes a little bit of practice.
I am not sure about how much crosswind but I do know that swirling winds
that come around the trees can cause problems.
Bill Vincent
Do Not Archive
----- Original Message -----
From: "JetPilot" <orcabonita@hotmail.com>
Sent: Wednesday, January 16, 2008 12:37 PM
Subject: Kolb-List: Re: Kolb Video
>
> That is pretty amazing. I wonder if my MK III would do that ? I have
> seen this video before, but every time I even think about doing this, all
> I can imagine are ground loops, so I have never tried it.
>
> How much crosswind can you land in ?
>
> Mike
Message 12
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| Subject: | Who make a good Voltage Regulator/Rectifier? |
Hi All,
I am currently operating a Rotax 503 DCDI with a Keywest regulator/ rectifier with
a Powersonic 12volt, 18amp battery. I seem to be getting allot of noise through
the com radio from the engine. If I reduce the engine power, the radio
noise goes away. The problem has aways been around but seems to be getting worse
now.
I have made sure I have good grounds, resistor spark plugs on the engine, and looked
at all the electrical connections to make sure they are clean and secure.
I suspect the regulator is beginning to fail. It has about 56 hours on it since
new. Is there a better voltage regulator/rectifier for the Rotax engine?
Inquiring minds would like to know!
Thanks in Advance,
Carlos G
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=158697#158697
Message 13
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| Subject: | Re: Who make a good Voltage Regulator/Rectifier? |
Carlos, put a 4,700uf 25V electrolytic capacitor in the positive line from
the regulator to the battery and run the negative terminal to ground and
your problems will probably go away. Also check that any extension cables
for your headphones are grounded ONLY at the radio and not to the airframe
(a ground loop).
Rick Girard
do not archive
On Jan 16, 2008 8:25 PM, The BaronVonEvil <grageda@innw.net> wrote:
>
> Hi All,
>
> I am currently operating a Rotax 503 DCDI with a Keywest regulator/
> rectifier with a Powersonic 12volt, 18amp battery. I seem to be getting
> allot of noise through the com radio from the engine. If I reduce the engine
> power, the radio noise goes away. The problem has aways been around but
> seems to be getting worse now.
>
> I have made sure I have good grounds, resistor spark plugs on the engine,
> and looked at all the electrical connections to make sure they are clean and
> secure.
>
> I suspect the regulator is beginning to fail. It has about 56 hours on it
> since new. Is there a better voltage regulator/rectifier for the Rotax
> engine?
>
> Inquiring minds would like to know!
>
> Thanks in Advance,
> Carlos G
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=158697#158697
>
>
Message 14
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| Subject: | Re: Who make a good Voltage Regulator/Rectifier? |
One thing that is often overlooked are the wires to your kill switches.
They are conducting AC from the engine to somewhere in your cockpit, in
effect they are fairly long antennas radiating AC from your magneto to
all over the place. You might try a simple experiment: Disconnect your
kill switch wires at the engine, and figure out how to kill the engine
with a switch or even a bare wire temporary rig at the engine. Tie the
airplane to something secure, and run it up with the normal wires
disconnected, and see if the noise in the radio is less. After the
experiment is over, reach across the leading edge and kill the engine
with your temporary kill device. This may not solve your problem, but it
will eliminate one notable noise maker as the culprit. If it turns out
that they are the culprit, here is how I fixed mine: Radio Shack sells
shielded microphone wire, two wires with a sheath around them. That is
what I used for the kill switches, and grounded one end of the
shield/sheath to the engine.
Richard Pike
MKIII N420P (420ldPoops)
The BaronVonEvil wrote:
>
> Hi All,
>
> I am currently operating a Rotax 503 DCDI with a Keywest regulator/ rectifier
with a Powersonic 12volt, 18amp battery. I seem to be getting allot of noise
through the com radio from the engine. If I reduce the engine power, the radio
noise goes away. The problem has aways been around but seems to be getting worse
now.
>
> I have made sure I have good grounds, resistor spark plugs on the engine, and
looked at all the electrical connections to make sure they are clean and secure.
>
> I suspect the regulator is beginning to fail. It has about 56 hours on it since
new. Is there a better voltage regulator/rectifier for the Rotax engine?
>
> Inquiring minds would like to know!
>
> Thanks in Advance,
> Carlos G
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=158697#158697
>
>
>
Message 15
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| Subject: | Re: Who make a good Voltage Regulator/Rectifier? |
Carlos, Shot the capacitor value off from memory. Should have said a
20,000uf 25Volt cap. Sorry.
Rick
an 16, 2008 9:24 PM, Richard Girard <jindoguy@gmail.com> wrote:
> Carlos, put a 4,700uf 25V electrolytic capacitor in the positive line from
> the regulator to the battery and run the negative terminal to ground and
> your problems will probably go away. Also check that any extension cables
> for your headphones are grounded ONLY at the radio and not to the airframe
> (a ground loop).
>
> Rick Girard
>
> do not archive
>
>
> On Jan 16, 2008 8:25 PM, The BaronVonEvil <grageda@innw.net> wrote:
>
> >
> > Hi All,
> >
> > I am currently operating a Rotax 503 DCDI with a Keywest regulator/
> > rectifier with a Powersonic 12volt, 18amp battery. I seem to be getting
> > allot of noise through the com radio from the engine. If I reduce the engine
> > power, the radio noise goes away. The problem has aways been around but
> > seems to be getting worse now.
> >
> > I have made sure I have good grounds, resistor spark plugs on the
> > engine, and looked at all the electrical connections to make sure they are
> > clean and secure.
> >
> > I suspect the regulator is beginning to fail. It has about 56 hours on
> > it since new. Is there a better voltage regulator/rectifier for the Rotax
> > engine?
> >
> > Inquiring minds would like to know!
> >
> > Thanks in Advance,
> > Carlos G
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=158697#158697
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
Message 16
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| Subject: | Re: Who make a good Voltage Regulator/Rectifier? |
----- Original Message -----
From: Richard Girard
To: kolb-list@matronics.com
Sent: Wednesday, January 16, 2008 8:33 PM
Subject: Re: Kolb-List: Who make a good Voltage Regulator/Rectifier?
Carlos, Shot the capacitor value off from memory. Should have said a
20,000uf 25Volt cap. Sorry.
Rick
I don't suppose that you would have a good idea of where to get one of
these critters would you?
Larry C
Message 17
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| Subject: | Re: Who make a good Voltage Regulator/Rectifier? |
Carlos, Radio Shack doesn't have anything close; I had to order one through
an electronics supply house. Cost was about $30.
Howard Shackleford
FS II
SC
In a message dated 1/16/2008 11:21:00 P.M. Eastern Standard Time,
lcottrell@fmtcblue.com writes:
Carlos, Shot the capacitor value off from memory. Should have said a
20,000uf 25Volt cap. Sorry.
Rick
I don't suppose that you would have a good idea of where to get one of these
critters would you?
Larry C
**************Start the year off right. Easy ways to stay in shape.
http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489
Message 18
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|
Yep a MK111 can do that.Have no photos but I regulary take off or land in
cross winds on 1 wheel. Nice smooth runway on grass .A lot of people seem
very concerned about the dreded ground loop. I have never ground looped the
MK111.And have never been in a position that I thought a ground loop may
happen.I completed all my flight training and and the next 300+ hrs on tail
draggers { the only real airoplane according to my instructor.The others
have training wheels} Since then I have added about 200hrs on the MK111 so
maybe its a time thing?May happen yet.
Happy flying from NewZealand
----- Original Message -----
From: "JetPilot" <orcabonita@hotmail.com>o: <kolb-list@matronics.com>
Sent: Thursday, January 17, 2008 7:37 AM
Subject: Kolb-List: Re: Kolb Video
>
> That is pretty amazing. I wonder if my MK III would do that ? I have
> seen this video before, but every time I even think about doing this, all
> I can imagine are ground loops, so I have never tried it.
>
> How much crosswind can you land in ?
>
> Mike
>
> --------
> "NO FEAR" - If you have no fear you did not go as fast as you
> could have !!!
>
> Kolb MK-III Xtra, 912-S
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=158594#158594
>
>
>
Message 19
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| Subject: | Re: Who make a good Voltage Regulator/Rectifier? |
Hi Guys,
Thanks for the input regarding my tale of woes. One would have thought that Keywest
would have put such a device into their little blue box.
Where does one find a 20,000 u.f. 25v.d.c. capacitor? I looked a bit on-line and
and most capacitors aren't nearly that high a value.
Mr Pike, I will definitely investigate the possibility that the noise is coming
from the ignition kill wires as I have not thought of that.
I suspect I will have to rearrange things in the wiring department aboard the plane.
Oh well, its not like I had anything in particular to do during this blasted cold
winter. Any one have a cheap nuclear reactor to loan so I can keep my hangar
warm?
Thanks again All,
Carlos G.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=158730#158730
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