---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Thu 07/17/08: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:15 AM - Re: Re: kolb sighting/Jabiru Powered MKIII (gary aman) 2. 06:23 AM - Re: Re: kolb sighting/Jabiru Powered MKIII (Richard & Martha Neilsen) 3. 06:28 AM - Re: Re: Generac engine test data on my FS II (gary aman) 4. 06:52 AM - Re: Re: Generac engine test data on my FS II (John Hauck) 5. 07:19 AM - Re: Generac engine test data on my FS II (willuribe@aol.com) 6. 08:10 AM - Re: Re: kolb sighting (Jerry Jones) 7. 08:27 AM - Re: Re: kolb sighting/Jabiru Powered MKIII (Jerry Jones) 8. 08:34 AM - Re: Re: Generac engine test data on my FS II (TK) 9. 09:51 AM - Re: Re: kolb sighting/Jabiru Powered MKIII (Richard & Martha Neilsen) 10. 11:08 AM - Re: Re: Generac engine test data on my FS II (Jimmy Young) ________________________________ Message 1 _____________________________________ Time: 06:15:14 AM PST US From: gary aman Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII John, I agree.I guess what we need on our MK-3s is a100hp radial that spins1800rpm and weighs 130# I really like the Jabiru,it's smooth and easy on fuel, less than 3 gph at 2750.It doesn't leak oil .It's a VW with an Australian accent. G Aman,hearing impaired,but happy. ----- Original Message ---- From: John Hauck Sent: Wednesday, July 16, 2008 10:57:21 PM Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII I haven't flown a mk-3 with a 912 on it so I can't give you an opinion.But the jabiru is a simpler install,air cooled, a tough and dependable unit.The only draw back is prop speed and the noise that it produces.When you spin a prop at 3100 behind a Kolb it really gets your attention. G Aman, Gary: I don't think Rick Neilsen had either, not until I took him flying out of Goulding's, Monument Valley, UT. Rick was quite surprised when we blasted out of the 5,190 ft MSL airstrip. There is a lot of difference flying a Kolb with a direct drive and a redrive engine. In the early days, John Williamson had a Jabiru direct drive on his Kolbra. My 912ULS powered MKIII would eat him up in take off, climb and cruise was about the same, once John W got the Kolbra up to altitude and speed. Think it was May 2005, I met John W at Canon City, CO. We departed the next morning for Leadville, CO, highest airport in the North American Continent. John W took off and left me in his dust, take off, climb, and cruise. Amazing what the 912ULS did for the Kolbra. The greatest improvement in the Kolbra performance was going from a short two blade high rpm prop to a big three blade slow turning prop. The 912 series engines are also simple to install. The coolant radiator has never been a problem since I hung the first one on a Kolb. A direct drive engine will never perform on the same level as a redrive engine on a MKIII or any other model Kolb. Short, high rpm, two blade props can not compete with slower turning long two and three blade props. Just the way it works out. Rick Neilsen started out with a direct drive VW, then went to a redrive. Ask Rick how much difference in performance the redrive made. john h mkIII ________________________________ Message 2 _____________________________________ Time: 06:23:50 AM PST US From: "Richard & Martha Neilsen" Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII John/Gary I have flown a 80 HP 912 a number of times at old Kolb and New Kolb. It is surprising the improvement 25% more power from a 912ULS gives a MKIIIC . The Jabiru is a great engine but isn't a great match for Kolb aircraft. The engine when compared to my direct drive VW is 20-30 lbs. lighter produces 5 more HP at 200-300 less RPM. This is all great and with the perfect prop does a acceptable job but. When I put a redrive on my VW I got almost twice the thrust from the same engine turning the same RPMs. Even with all the on paper advantages of the Jabiru, it just can't match the thrust of a 80 HP redrive engine and it is thrust that is important. The 100 HP 912 really puts it and my VW to shame. Now if they would cut the cost of the a 912 by $10,000-12,000.... Rick Neilsen Redrive VW powered MKIIIC ----- Original Message ----- From: John Hauck To: kolb-list@matronics.com Sent: Wednesday, July 16, 2008 10:57 PM Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII I haven't flown a mk-3 with a 912 on it so I can't give you an opinion.But the jabiru is a simpler install,air cooled, a tough and dependable unit.The only draw back is prop speed and the noise that it produces.When you spin a prop at 3100 behind a Kolb it really gets your attention. G Aman, Gary: I don't think Rick Neilsen had either, not until I took him flying out of Goulding's, Monument Valley, UT. Rick was quite surprised when we blasted out of the 5,190 ft MSL airstrip. ________________________________ Message 3 _____________________________________ Time: 06:28:47 AM PST US From: gary aman Subject: Re: Kolb-List: Re: Generac engine test data on my FS II My apologies, Was doing the annual inspection on the Bonanza,And the copter was just behind me in the hanger when I noticed the big cog belt redrive.Should have looked for the name plate as well.But I'm sure they must be falling out of the sky regularly with all of those well known belt and bearing failures we've heard so much about.I'll stick to fixed wing just to be on the safe side. ----- Original Message ---- From: Mnflyer Sent: Thursday, July 17, 2008 12:08:15 AM Subject: Kolb-List: Re: Generac engine test data on my FS II "Some certified aircraft fly with belt redrives everyday.Brantly comes to mind first" If you are referring to the Brantly Helicopter, it is not belt driven, but the Engstrom and the Hughes 269 helicopters are belt driven -------- GB MNFlyer Flying a HKS Kitfox III Read this topic online here: http://forums.matronics.com/viewtopic.php?p=193294#193294 ________________________________ Message 4 _____________________________________ Time: 06:52:51 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: Generac engine test data on my FS II Gary: My first solo flight was in a Hughes TH-55 (269) driven by 5 v belts. Had a spring loaded toggle switch operate the linear actuator and tension the b elts on start up. I don't recall any belt problems during my limited time in flight school or afterward. My first solo flight in a fixed wing was my Ultrastar with Homer Kolb's red rive with two poly v belts. Worked pretty good. john h mkIII My apologies, Was doing the annual inspection on the Bonanza,And the copter was j ust behind me in the hanger when I noticed the big cog belt redrive.Should have looked for the name plate as well.But I'm sure they must be falling ou t of the sky regularly with all of those well known belt and bearing failur es we've heard so much about.I'll stick to fixed wing just to be on the saf e side. ________________________________ Message 5 _____________________________________ Time: 07:19:50 AM PST US Subject: Kolb-List: Re: Generac engine test data on my FS II From: willuribe@aol.com Hi Mike, Please tell me where I can buy an HKS for $3000 more installed. Regards, Will Uribe FireStar II El Paso, TX do not archive -----Original Message----- From: JetPilot Sent: Wed, 16 Jul 2008 10:59 am Subject: Kolb-List: Re: Generac engine test data on my FS II Given the high price of the Genrac engine, spending a little extra for the HKS would be a no brainer for me. The extra reliability, extra power, and extra safety of the HKS all make it a much better engine choice for a Kolb, even if it is about 3000 dollars more. ________________________________ Message 6 _____________________________________ Time: 08:10:57 AM PST US From: Jerry Jones Subject: Re: Kolb-List: Re: kolb sighting > Thanks Gary. Agree with all you say about the Jab--including the > noise on a pusher. I was swinging a 58" on a Titan and found it > noisy. Guys that put 62" props really cranked out the noise. > There's a lot to be said noise wise, seems to me, for a high-ratio > gearbox swinging three blades on a pusher. Jerry > > I haven't flown a mk-3 with a 912 on it so I can't give you an > opinion.But the jabiru is a simpler install,air cooled, a tough and > dependable unit.The only draw back is prop speed and the noise that > it produces.When you spin a prop at 3100 behind a Kolb it really > gets your attention. >> > ________________________________ Message 7 _____________________________________ Time: 08:27:27 AM PST US From: Jerry Jones Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII and then, John and Gary, I hung a 3300 Jab on the back of my Titan. It weighs about 15 lb more than a 912, costs about the same (or did) and climb went at sea level as predicted, from 1400 to 2000 fpm. I think it might have stayed with a 912 Kolb, and it always got everyone's attention from its incredible climb angle, including during my bi-annuals. Still, a little noisy. Jerry--also hearing challenged--not impaired, Gary ;-) On Jul 17, 2008, at 6:12 AM, gary aman wrote: > John, > I agree.I guess what we need on our MK-3s is a100hp radial that > spins1800rpm and weighs 130# I really like the Jabiru,it's smooth > and easy on fuel, less than 3 gph at 2750.It doesn't leak oil .It's > a VW with an Australian accent. > G Aman,hearing impaired,but happy. > > ----- Original Message ---- > From: John Hauck > To: kolb-list@matronics.com > Sent: Wednesday, July 16, 2008 10:57:21 PM > Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII > > I haven't flown a mk-3 with a 912 on it so I can't give you an > opinion.But the jabiru is a simpler install,air cooled, a tough and > dependable unit.The only draw back is prop speed and the noise that > it produces.When you spin a prop at 3100 behind a Kolb it really > gets your attention. > > G Aman, > > > Gary: > > I don't think Rick Neilsen had either, not until I took him flying > out of Goulding's, Monument Valley, UT. Rick was quite surprised > when we blasted out of the 5,190 ft MSL airstrip. > > There is a lot of difference flying a Kolb with a direct drive and > a redrive engine. In the early days, John Williamson had a Jabiru > direct drive on his Kolbra. My 912ULS powered MKIII would eat him > up in take off, climb and cruise was about the same, once John W > got the Kolbra up to altitude and speed. > > Think it was May 2005, I met John W at Canon City, CO. We departed > the next morning for Leadville, CO, highest airport in the North > American Continent. John W took off and left me in his dust, take > off, climb, and cruise. Amazing what the 912ULS did for the > Kolbra. The greatest improvement in the Kolbra performance was > going from a short two blade high rpm prop to a big three blade > slow turning prop. > > The 912 series engines are also simple to install. The coolant > radiator has never been a problem since I hung the first one on a > Kolb. A direct drive engine will never perform on the same level > as a redrive engine on a MKIII or any other model Kolb. > > Short, high rpm, two blade props can not compete with slower > turning long two and three blade props. Just the way it works out. > > Rick Neilsen started out with a direct drive VW, then went to a > redrive. Ask Rick how much difference in performance the > > ________________________________ Message 8 _____________________________________ Time: 08:34:25 AM PST US From: TK Subject: Re: Kolb-List: Re: Generac engine test data on my FS II Jimmy Young wrote: > Eugene Zimmerman asked: > > >Does your plane still have the wing fold capability?< > > Eugene, > > I have to remove the oil filter to fold the right wing, but I just > tape a baggie over the opening and it's easy to do. I very rarely fold > it since I keep it in a hanger. > > George Alexander asked: > > >Was there a determination made as to what caused the 503 to fail?< > > George, > > Some of the local guys in my flying club think the wrist pin failed or > the "circlip" came loose, causing the #1piston to get damaged. The > piston skirt was broken off all the way around and the engine was full > of ground up aluminum. The 503 had 205 hrs. on it at the time of it's > demise and was running perfectly up until about 1 second before it > quit. I've been busy doing other things, but one day I'll get around > to looking inside and let you know what we found. I'm attaching a > photo of the front cylinder looking thru the intake manifold. > > Jimmy Y > Jimmy, I'm curious! Did you break the engine down before this happened to decarbon or something? What kind of mixing oil were you using? Seems like a very low hour engine to have that happen!!! Just trying to learn Terry - FireFly #95 ________________________________ Message 9 _____________________________________ Time: 09:51:38 AM PST US From: "Richard & Martha Neilsen" Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII Jerry With 120 HP you should get super performance. On the Jab web site they list the fuel consumption at 4 GPH for the 4 cyl. and 6.8 GPH on the 6 cyl. @ 75 %. With that much power you can get a bunch of thrust even if it isn't very efficient. My direct drive VW would wake the dead when I wound my 60" prop up to 3600 RPM. That noise you hear is HP being turned into something other than thrust. Rick Neilsen Redrive VW powered MKIIIC ----- Original Message ----- From: Jerry Jones To: kolb-list@matronics.com Sent: Thursday, July 17, 2008 11:25 AM Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII and then, John and Gary, I hung a 3300 Jab on the back of my Titan. It weighs about 15 lb more than a 912, costs about the same (or did) and climb went at sea level as predicted, from 1400 to 2000 fpm. I think it might have stayed with a 912 Kolb, and it always got everyone's attention from its incredible climb angle, including during my bi-annuals. Still, a little noisy. Jerry--also hearing challenged--not impaired, Gary ;-) On Jul 17, 2008, at 6:12 AM, gary aman wrote: John, I agree.I guess what we need on our MK-3s is a100hp radial that spins1800rpm and weighs 130# I really like the Jabiru,it's smooth and easy on fuel, less than 3 gph at 2750.It doesn't leak oil .It's a VW with an Australian accent. G Aman,hearing impaired,but happy. ----- Original Message ---- From: John Hauck To: kolb-list@matronics.com Sent: Wednesday, July 16, 2008 10:57:21 PM Subject: Re: Kolb-List: Re: kolb sighting/Jabiru Powered MKIII I haven't flown a mk-3 with a 912 on it so I can't give you an opinion.But the jabiru is a simpler install,air cooled, a tough and dependable unit.The only draw back is prop speed and the noise that it produces.When you spin a prop at 3100 behind a Kolb it really gets your attention. G Aman, Gary: I don't think Rick Neilsen had either, not until I took him flying out of Goulding's, Monument Valley, UT. Rick was quite surprised when we blasted out of the 5,190 ft MSL airstrip. There is a lot of difference flying a Kolb with a direct drive and a redrive engine. In the early days, John Williamson had a Jabiru direct drive on his Kolbra. My 912ULS powered MKIII would eat him up in take off, climb and cruise was about the same, once John W got the Kolbra up to altitude and speed. Think it was May 2005, I met John W at Canon City, CO. We departed the next morning for Leadville, CO, highest airport in the North American Continent. John W took off and left me in his dust, take off, climb, and cruise. Amazing what the 912ULS did for the Kolbra. The greatest improvement in the Kolbra performance was going from a short two blade high rpm prop to a big three blade slow turning prop. The 912 series engines are also simple to install. The coolant radiator has never been a problem since I hung the first one on a Kolb. A direct drive engine will never perform on the same level as a redrive engine on a MKIII or any other model Kolb. Short, high rpm, two blade props can not compete with slower turning long two and three blade props. Just the way it works out. Rick Neilsen started out with a direct drive VW, then went to a redrive. Ask Rick how much difference in performance the http://www.matronics.com/Navigator?Kolb-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ontribution ________________________________ Message 10 ____________________________________ Time: 11:08:02 AM PST US From: Jimmy Young Subject: Kolb-List: Re: Re: Generac engine test data on my FS II TK wrote: >I'm curious! Did you break the engine down before this happened to decarbon or something? What kind of mixing oil were you using? Seems like a very low hour engine to have that happen!!! Just trying to learn< Terry, At 150 hrs I looked inside the exhaust ports, there was very little carbon and the rings had good movement, never went inside to do a decarbon. The engine is oil-injected and I always used Pennzoil Air-Cooled 2 cycle oil. The engine did not sieze, it would still turn over and would even run for a few seconds on the #2 cylinder before I took it off the plane. I don't have an answer as to what happened. It will be opened up one day soon & I'll let you know what we found. Jimmy Young ------------------------------------------------------------------------------------- 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.