---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Thu 01/24/19: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 06:53:10 AM PST US Subject: Kolb-List: MK II Weight and Balance From: "Mark K" 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 _____________________________________ Time: 07:29:08 AM PST US From: B Young Subject: Re: Kolb-List: 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 _____________________________________ Time: 08:16:10 AM PST US From: "John Hauck" 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 4 _____________________________________ Time: 09:12:01 AM PST US From: "John Hauck" Subject: RE: Kolb-List: 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 _____________________________________ Time: 09:27:50 AM PST US From: Bill Berle Subject: Re: Kolb-List: 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 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 _____________________________________ Time: 10:11:22 AM PST US Subject: Kolb-List: Re: Help with FS Wing Gap Seal From: "slingshot003" 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 _____________________________________ Time: 11:01:13 AM PST US From: Gary Aman Subject: Re: Kolb-List: 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 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 _____________________________________ Time: 03:16:25 PM PST US Subject: Kolb-List: Re: MK II Weight and Balance From: "Mark K" 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 _____________________________________ Time: 05:09:08 PM PST US Subject: Kolb-List: Re: MK II Weight and Balance From: "Richard Pike" 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 ____________________________________ Time: 08:19:32 PM PST US Subject: Kolb-List: Kolb TwinStar Plans From: "Dee One" 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kolb-list Browse Digests http://www.matronics.com/digest/kolb-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.