Today's Message Index:
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1. 06:53 AM - MK II Weight and Balance (Mark K)
2. 07:29 AM - Re: MK II Weight and Balance (B Young)
3. 08:16 AM - Re: pinging John Hauck (John Hauck)
4. 09:12 AM - Re: pinging John Hauck (John Hauck)
5. 09:27 AM - Re: MK II Weight and Balance (Bill Berle)
6. 10:11 AM - Re: Help with FS Wing Gap Seal (slingshot003)
7. 11:01 AM - Re: Re: Help with FS Wing Gap Seal (Gary Aman)
8. 03:16 PM - Re: MK II Weight and Balance (Mark K)
9. 05:09 PM - Re: MK II Weight and Balance (Richard Pike)
10. 08:19 PM - Kolb TwinStar Plans (Dee One)
Message 1
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Subject: | MK II Weight and Balance |
I did some searching on the list here and have not found what I am looking for
in regards to W&B for Kolbs in general, not to mention MKII. I may have missed
it so pardon my re-asking.
While going through my Light Sport ground school, we have been going over W&B extensively.
So now that my rebuild is progressing I'm starting to think about
my MKII W&B.
As far as the weights, arms and moments I'm good with that. My big question is
where is the center of lift/pressure? I've looked through the plans and build
manual and am not seeing any reference.
Per my understanding it is easy to determine the CG, it is determining if the CG
falls within the acceptable envelope of % of wing cord that I'm not finding.
Thanks in advance.
--------
Mark
Twinstar MKII
Great Bend, PA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=487226#487226
Message 2
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Subject: | Re: MK II Weight and Balance |
it is determining if the CG falls within the acceptable envelope of % of
wing cord that I'm not finding.
Thanks in advance.
--------
Mark
Mark
>
You said you can find the center of gravity. Take the center of gravity
measurement call it cg. Cg times 100 then devide by the measurement
of the wing cord (should be listed in the plans) the wing chord for
example in the Mark 3 is listed in the plans at 66 in.
Example for mkiii with 66 inch wing cord.
Cg 20 inches
(20 X 100) =C3=B7 66 = 30.3 % of wing cord
My mkiii plans say the results should be between 25 and 35 %
Hope this helps
Boyd Young
Mkiii Utah
Message 3
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Subject: | pinging John Hauck |
All is good. Tornado was 10.0 miles south of hauck's holler and 1.0 mile north
of my girl friend Nell's home in Wetumpka.
Thanks for asking.
john h
Titus, Alabama
-----Original Message-----
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Charlie England
Sent: Saturday, January 19, 2019 6:51 PM
Subject: Kolb-List: pinging John Hauck
Hey John,
Aren't you close to Wetumpka? Hoping y'all are all ok after the tornado.
Charlie
---
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Message 4
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Subject: | pinging John Hauck |
Mail is a little slow during this cold wet weather. Took 5 days for this one to
make it through the system. ;-)
john h
Titus, Alabama
-----Original Message-----
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of John Hauck
Sent: Thursday, January 24, 2019 10:16 AM
Subject: RE: Kolb-List: pinging John Hauck
All is good. Tornado was 10.0 miles south of hauck's holler and 1.0 mile north
of my girl friend Nell's home in Wetumpka.
Thanks for asking.
john h
Titus, Alabama
-----Original Message-----
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Charlie England
Sent: Saturday, January 19, 2019 6:51 PM
Subject: Kolb-List: pinging John Hauck
Hey John,
Aren't you close to Wetumpka? Hoping y'all are all ok after the tornado.
Charlie
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
Message 5
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Subject: | Re: MK II Weight and Balance |
The center of pressure is not anything that is important during the weight and
balance. Center of Pressure is an aerodynamic factor of the wing's airfoil, and
is very important during the design and engineering phase. The aero engineer(s)
determine the Cp. Then they determinea safe CG range or envelope (which is
based on where the Cp is, among other things).
The reason that Cp is not shown on the plans is that (for most purposes) it's of
no concern to the mechanic or the pilot, only the designers and engineers.
All the mechanic / technician / inspector needs to be concerned about during "weight
and balance" is... weight (in pounds or kilograms) and balance (as in the
center of gravity) :).
Bill Berle
www.ezflaphandle.com - safety & performance upgrade for light aircraft
www.grantstar.net - winning proposals for non-profit and for-profit entities
--------------------------------------------
On Thu, 1/24/19, Mark K <seanote@echoes.net> wrote:
My big question is where is the center of lift/pressure? I've looked through the
plans
and build manual and am not seeing any reference.
Message 6
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Subject: | Re: Help with FS Wing Gap Seal |
Richard Pike,
Your suggestion is the only logical solution if I am to keep the full length windshield
without any major modifications, regardless if I keep the lexon gap seal
or go with a fabric or vinyl one. I may just weld 3 tabs to the bottom of
the hoop and rivet the shortened windshield to the tabs, then just velcro something
to seal the gap between the windshield and the gap seal. This would get
me flying until I commit to a full enclosure design. -Richard Swiderski
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=487235#487235
Message 7
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Subject: | Re: Help with FS Wing Gap Seal |
Been years Richard, since we stopped by to see your Geo powered Kolb and custom
built trailer. Glad to see youre into it. G Aman
Sent from my iPhone
> On Jan 24, 2019, at 1:11 PM, slingshot003 <i2bxtn@gmail.com> wrote:
>
>
> Richard Pike,
>
> Your suggestion is the only logical solution if I am to keep the full length
windshield without any major modifications, regardless if I keep the lexon gap
seal or go with a fabric or vinyl one. I may just weld 3 tabs to the bottom
of the hoop and rivet the shortened windshield to the tabs, then just velcro something
to seal the gap between the windshield and the gap seal. This would
get me flying until I commit to a full enclosure design. -Richard Swiderski
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=487235#487235
>
>
>
>
>
>
>
>
>
Message 8
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Subject: | Re: MK II Weight and Balance |
Guys, thanks for the info. Very helpful. Where can it is indicated on the plans
for build manual the allowable envelope for the CG? % wing chord? Thanks
in advance.
--------
Mark
Twinstar MKII
Great Bend, PA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=487241#487241
Message 9
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Subject: | Re: MK II Weight and Balance |
Can't say anything about the MKII, but for the MKIII scroll to sheet 41:
http://oh2fly.net/oldpoops/Lexan%20rear%20enclosure.html
I would think that they are pretty similar.
--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kolb Firefly Part 103 legal (Ready for a test flight on the new 277)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=487246#487246
Message 10
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Subject: | Kolb TwinStar Plans |
I built, enjoyed, and instructed with a Kolb TwinStar (1989 version) for 20 years.
I now wish I would have kept the little plane. I'm now looking for someone
who might have the plans and manual for a Kolb TwinStar (about a 1989 version)
so I can build another one. Kolb no longer sells this model. Please let me
know if anyone knows where I can find plans and manual. leblancds at cox dot
net, Great little plane, I'd like to install a four cycle or electric engine
on one. Thanks for your response.
--------
The Past is History
The Future is a Mystery
Today is a Gift
Thats Why They Call it the Present
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=487247#487247
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