---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sun 09/05/10: 13 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:44 AM - Corvair install (gd5052) 2. 06:22 AM - Re: Corvair install (Richard Neilsen) 3. 06:26 AM - Re: Corvair install (Mike Welch) 4. 06:38 AM - Re: Corvair install (gd5052) 5. 06:56 AM - Re: Re: Corvair install (Mike Welch) 6. 09:28 AM - Kolb instructor (gd5052) 7. 10:06 AM - Re: Kolb instructor (Richard Girard) 8. 10:10 AM - Re: Kolb instructor (Arksey@aol.com) 9. 10:57 AM - Re: Re: Corvair install (Richard Neilsen) 10. 12:26 PM - Re: Kolb instructor (gd5052) 11. 12:34 PM - Re: Corvair install (Richard Pike) 12. 01:31 PM - Re: Re: Kolb instructor (Mike Welch) 13. 01:43 PM - Re: Corvair install (Ellery Batchelder Jr) ________________________________ Message 1 _____________________________________ Time: 05:44:46 AM PST US Subject: Kolb-List: Corvair install From: "gd5052" Has anyone considered installing a corvair engine on a MarkIII? -------- Gary Cornell Read this topic online here: http://forums.matronics.com/viewtopic.php?p=311415#311415 ________________________________ Message 2 _____________________________________ Time: 06:22:47 AM PST US Subject: Re: Kolb-List: Corvair install From: Richard Neilsen Gary I would think the corvair is too heavy. The primary problem would be that no one makes a redrive for the corvair. Rick Neilsen Redrive VW Powered MKIIIC On Sun, Sep 5, 2010 at 8:43 AM, gd5052 wrote: > > Has anyone considered installing a corvair engine on a MarkIII? > > -------- > Gary Cornell > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=311415#311415 > > ________________________________ Message 3 _____________________________________ Time: 06:26:34 AM PST US From: Mike Welch Subject: RE: Kolb-List: Corvair install Gary=2C Although someone may have thought about it=2C I doubt it is a good idea f or several reasons. First of all=2C the Corvair engine is a 6 cylinder=2C which means it's fa irly big and heavy. Second=2C it would have to be a direct drive to spin the prop=2C otherwis e it would be incredibly way too heavyby the addition of a redrive system!! A direct dri ve prop would need to spin at least 3000 rpm=2Cto allow the engine to come remotely close to it's torque curve=2C and that makes for an VERY loud and annoying prop. Third=2C the fuel burn for a Corvair would likely be in the 4-5 gph range (at least) @3K rpm. This would mean you'd have to install a custom made tank that would best be able to carry 15-18 gallons of fuel. Now=2C installing the larger fuel tank isn't the pr oblem! It's the fact that you have already exceeded your useful load with a "too big" of an engi ne=2C couple that with the need to carry 100-125 lbs of fuel=2C and you've got a dog on your hands. IMO=2C a guy could go on and on about why a Corvair engine on a MkIII is a bad idea=2C but I think it pushes the envelope in being very practical. My opinion!! Othe r's may have a different opinion=2C that ok with me. IF a guy were inclined to go with an alternative engine (a non-Rotax OEM engine)=2C you would be MUCH better off with either a VW based engine (w/a redrive)=2C or a Lyco ming O-200. Both of these engines push the maximum weight allowance=2C but again=2C IMO =2C would be better than the Corvair. BTW=2C I don't have anything against the Corvair engine for an Experiment al Aircraft=2C I just think the MkIII is not the appropriate airframe choice. Personally=2C my recommendation would be the VW based engine with a redri ve. a)Reasonably priced ($6000-$8000) b) Kolb factory talking about making it an acceptable option c) cheap to maintain=2C ok on gas consumption d) part availability by the millions (especailly from the HiPo dune buggy c rowd). Even if I had a Corvair engine lying around my shop=2C I can't imagine se riously considering installing it on a Kolb MkIII. Mike Welch > Subject: Kolb-List: Corvair install > From: gdcornell54@hotmail.com > Date: Sun=2C 5 Sep 2010 05:43:47 -0700 > To: kolb-list@matronics.com > > > Has anyone considered installing a corvair engine on a MarkIII? > > -------- > Gary Cornell > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=311415#311415 > > > > > > > =========== =========== =========== =========== > > > ________________________________ Message 4 _____________________________________ Time: 06:38:47 AM PST US Subject: Kolb-List: Re: Corvair install From: "gd5052" I have another option and that would be a Harley Twin Cam B engine The 1550 cc makes 100HP and weighs in @ 152 Lbs -------- Gary Cornell Read this topic online here: http://forums.matronics.com/viewtopic.php?p=311423#311423 ________________________________ Message 5 _____________________________________ Time: 06:56:06 AM PST US From: Mike Welch Subject: RE: Kolb-List: Re: Corvair install > I have another option and that would be a Harley Twin Cam B engine The 15 50 cc makes 100HP and weighs in @ 152 Lbs > > -------- > Gary Cornell Gary=2C Much better choice. Don't confuse facts about the Harley engine=2C tho. Facts like @ what rp m does it get that 100 HP? If it gets it at 5000+ rpm=2C then you have to install a redrive =2C and it's no longer a 155 lb motor!! What is the fuel burn? Can you adapt a redrive to it=2C and if you can=2C THEN how much would it weigh? IMO=2C the Harley may be a reasonable idea. Just make sure you are reali stic when you make an apples and apples comparison to a different engine. Another thing to remember about the Harley engine is the radial design. Weight and balance would need to be taken into account=2C since more of the Harley engine would be " rearward". This may not be a problem=2C just to something to think about. I thought there was a problem with the Harley due to excess vibration. C heck out Hogair's information. Headed out to my shop=2C gotta finsh that instrument panel. Mike Welch GEO Metro 1.0L turbo ________________________________ Message 6 _____________________________________ Time: 09:28:05 AM PST US Subject: Kolb-List: Kolb instructor From: "gd5052" Is there anyone around the champagne Illinois area or close that is a BFI so I can get my sport pilot license in a Kolb. -------- Gary Cornell Read this topic online here: http://forums.matronics.com/viewtopic.php?p=311439#311439 ________________________________ Message 7 _____________________________________ Time: 10:06:14 AM PST US Subject: Re: Kolb-List: Kolb instructor From: Richard Girard BFI is a license that was associated with one of the national ultralight organizations. Since the adoption of the Light Sport pilot license they can do nothing for you in getting a ticket. You need to find a CFI (certified flight instructor). Depending upon your ambitions, you need to decide whether to use a Sport Pilot CFI or a PPL (private pilot license) CFI. The difference being that dual instruction from a SP CFI will not count for more advanced ratings (your solo time will) while a PPL CFI's dual instruction will. Rick Girard On Sun, Sep 5, 2010 at 11:27 AM, gd5052 wrote: > > Is there anyone around the champagne Illinois area or close that is a BFI > so I can get my sport pilot license in a Kolb. > > -------- > Gary Cornell > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=311439#311439 > > -- Zulu Delta Kolb Mk IIIC 582 Gray head 4.00 C gearbox 3 blade WD Thanks, Homer GBYM It is not bigotry to be certain we are right; but it is bigotry to be unable to imagine how we might possibly have gone wrong. - G.K. Chesterton ________________________________ Message 8 _____________________________________ Time: 10:10:42 AM PST US From: Arksey@aol.com Subject: Re: Kolb-List: Kolb instructor Gary, try this web site for Springfield FSDO or contact their office they should be able to help you...jim swan _http://www.faa.gov/about/office_org/field_offices/fsdo/spi/_ (http://www.faa.gov/about/office_org/field_offices/fsdo/spi/) Do not archive FIRESTAR ll 503 Michigan jswan GPS FOR MY RUNWAY N 42 deg 28.581 W084deg 44.825 ph. 517-663-8488 ________________________________ Message 9 _____________________________________ Time: 10:57:46 AM PST US Subject: Re: Kolb-List: Re: Corvair install From: Richard Neilsen Gary Yes the Harley engine weighs less and has the power but at what RPM? You need a prop RPM around 2000RPMs to swing a big enough prop to get the thrust needed for a Kolb MKIII. Yes you could swing a 58" prop up to 3000RPMs but you would need more than 100HP to get the same thrust. Also a V twin has a nasty harmonics issue that is tough to deal with on a direct drive engine and much more difficult to deal with on a redrive. Valley Engineering had to get very creative to even make their Genrac V twin work at all. Rick Neilsen 1st Redrive VW Powered MKIIIC On Sun, Sep 5, 2010 at 9:37 AM, gd5052 wrote: > > I have another option and that would be a Harley Twin Cam B engine The 1550 > cc makes 100HP and weighs in @ 152 Lbs > > -------- > Gary Cornell > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=311423#311423 > > ________________________________ Message 10 ____________________________________ Time: 12:26:58 PM PST US Subject: Kolb-List: Re: Kolb instructor From: "gd5052" Thanks, I'm wanting to build a MarkIII this winter. -------- Gary Cornell Read this topic online here: http://forums.matronics.com/viewtopic.php?p=311453#311453 ________________________________ Message 11 ____________________________________ Time: 12:34:38 PM PST US Subject: Kolb-List: Re: Corvair install From: "Richard Pike" As one who has owned, built, and raced a number of Corvair's over the years, I thought about it a lot. The weight is just too much: 225 pounds minimum. But in all other respects it would not be a bad choice at all, just too heavy. Richard Pike MKIII N420P (420ldPoops) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=311455#311455 ________________________________ Message 12 ____________________________________ Time: 01:31:31 PM PST US From: Mike Welch Subject: RE: Kolb-List: Re: Kolb instructor > Thanks=2C I'm wanting to build a MarkIII this winter. > Gary Cornell Gary=2C This winter? You mean THIS winter??!! You're going to build a MkIII in one winter?!! Damn=2C I wish I knew that was all it took. BTW=2C you say MkIII. Do you mean Xtra or Classic? Just curious. I've spent A LOT more time building my MkIII than just about anybody (exc ept for Mike S.=2C hehe). I've changed a lot of things. Modified a lot of things. Done a few things twice=2C because I didn't like the first version. I've spent more than "a few" winters building it. More than a few summer s=2C too. Time to wrap it up!! Looking to finish it in a few short months. We'll see. Mike Welch MkIIICX ________________________________ Message 13 ____________________________________ Time: 01:43:11 PM PST US Subject: Re: Kolb-List: Corvair install From: Ellery Batchelder Jr I have a Corvair engine in my shop and I wouldnt even think of installing it on a Mk3 Ellery Batchelder Jr. -----Original Message----- From: Mike Welch Sent: Sun, Sep 5, 2010 9:25 am Subject: RE: Kolb-List: Corvair install Gary, Although someone may have thought about it, I doubt it is a good idea fo r several reasons. First of all, the Corvair engine is a 6 cylinder, which means it's fairl y big and heavy. Second, it would have to be a direct drive to spin the prop, otherwise it would be incredibly way too heavyby the addition of a redrive system!! A direct dr ive prop would need to spin at least 3000 rpm,to allow the engine to come remotely close to it's torque curve, and that makes for an VERY loud and annoying prop. Third, the fuel burn for a Corvair would likely be in the 4-5 gph range (at least) @3K rpm. This would mean you'd have to install a custom made tank that would best be able to carry 15-18 gallons of fuel. Now, installing the larger fuel tank isn't the pro blem! It's the fact that you have already exceeded your useful load with a "too big" of an eng ine, couple that with the need to carry 100-125 lbs of fuel, and you've got a dog on your hands. IMO, a guy could go on and on about why a Corvair engine on a MkIII is a bad idea, but I think it pushes the envelope in being very practical. My opinion!! Oth er's may have a different opinion, that ok with me. IF a guy were inclined to go with an alternative engine (a non-Rotax OEM engine), you would be MUCH better off with either a VW based engine (w/a redrive), or a Lycom ing O-200. Both of these engines push the maximum weight allowance, but again, IMO, would be better than the Corvair. BTW, I don't have anything against the Corvair engine for an Experimenta l Aircraft, I just think the MkIII is not the appropriate airframe choice. Personally, my recommendation would be the VW based engine with a redriv e. a)Reasonably priced ($6000-$8000) b) Kolb factory talking about making it an acceptable option c) cheap to maintain, ok on gas consumption d) part availability by the millions (especailly from the HiPo dune buggy crowd). Even if I had a Corvair engine lying around my shop, I can't imagine ser iously considering installing it on a Kolb MkIII. Mike Welch > Subject: Kolb-List: Corvair install > From: gdcornell54@hotmail.com > Date: Sun, 5 Sep 2010 05:43:47 -0700 > To: kolb-list@matronics.com > > > Has anyone considered installing a corvair engine on a MarkIII? > > -------- > Gary Cornell > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=311415#311415 > > >= > > > ======================== =========== -= - The Kolb-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Kolb-List - -======================== ======================== =========== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== ======================== =========== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ======================== =========== ------------------------------------------------------------------------------------- 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.