---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Tue 07/28/09: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:20 AM - Yet another engine option (Richard Girard) 2. 05:45 AM - Re: Yet another engine option (JetPilot) 3. 06:54 AM - Re: Re: Yet another engine option (Herb) 4. 06:57 AM - Re: Re: New Camera, Owyhee Ramblins (b young) 5. 10:21 AM - Re: Yet another engine option (lucien) 6. 02:45 PM - Re: Yet another engine option (JetPilot) 7. 03:24 PM - Re: Re: Yet another engine option (robert bean) 8. 03:49 PM - Re: Re: Yet another engine option (Herb) 9. 04:53 PM - Re: Horizontal stabilizer cable thimble worn (JetPilot) 10. 05:07 PM - Re: Re: Horizontal stabilizer cable thimble worn (John Hauck) 11. 07:09 PM - Power loss (Dana Hague) 12. 08:22 PM - Re: Re: Yet another engine option (Ellery Batchelder Jr) ________________________________ Message 1 _____________________________________ Time: 03:20:07 AM PST US Subject: Kolb-List: Yet another engine option From: Richard Girard A while back I offered a new Rotax B gearbox with a 2.00 to 1 ratio up for sale and had no takers here on the list, but it did sell quickly to a fellow in Thailand through eBay. Yesterday Prayote sent me a few pictures of the installation. Thought it might be of interest. The engine is a Subaru EA71. Rick Girard ________________________________ Message 2 _____________________________________ Time: 05:45:45 AM PST US Subject: Kolb-List: Re: Yet another engine option From: "JetPilot" Very interesting !!! I did not know a B box would take that kind of horsepower, I wonder if it will last ?? I think I would have used a C box on an engine that big. Adapting a Rotax gear box to an existing engine sounds like a great idea though. I would like to see an inexpensive and reliable alternative to the 912-S developed... But I'm not holding my breath, people have been trying to do that for many years now with very little success. 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=254985#254985 ________________________________ Message 3 _____________________________________ Time: 06:54:51 AM PST US From: Herb Subject: Re: Kolb-List: Re: Yet another engine option The EA71 engine is pretty ancient...60 hp at the best... Its successor was the EA81...then the EA82... Herb At 07:45 AM 7/28/2009, you wrote: > >Very interesting !!! > >I did not know a B box would take that kind of horsepower, I wonder >if it will last ?? I think I would have used a C box on an engine >that big. Adapting a Rotax gear box to an existing engine sounds >like a great idea though. I would like to see an inexpensive and >reliable alternative to the 912-S developed... But I'm not holding >my breath, people have been trying to do that for many years now >with very little success. > >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=254985#254985 > > >Checked by AVG - www.avg.com >07/27/09 05:58:00 ________________________________ Message 4 _____________________________________ Time: 06:57:35 AM PST US From: "b young" Subject: RE: Kolb-List: Re: New Camera, Owyhee Ramblins I'm trying to come up with a design for a mount (thinking gear leg) that will pan and tilt a little using bowden cables. Will take some R&D. Trick is to keep it simple, light, and functional. May take a little while. Maybe someone on the list already has the answer! >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I saw a camera, think it was in wall mart, probably designed for low dollar surveillance, but it had pan and tilt built in. I don't recall how the controls worked. Or if it could be made to work on airplane power without major electrical overhaul. Then it might be as easy as finding the dc after the bridge rectifier. Maybe a person would not have to completely reinvent the wheel. Boyd Young ________________________________ Message 5 _____________________________________ Time: 10:21:35 AM PST US Subject: Kolb-List: Re: Yet another engine option From: "lucien" JetPilot wrote: > Very interesting !!! > > I did not know a B box would take that kind of horsepower, I wonder if it will last ?? I think I would have used a C box on an engine that big. Adapting a Rotax gear box to an existing engine sounds like a great idea though. I would like to see an inexpensive and reliable alternative to the 912-S developed... But I'm not holding my breath, people have been trying to do that for many years now with very little success. > > Mike The real issue with the B box is supporting whatever shaft the small drive gear is fitted to - unlike the C box, there's no separate bearing for the drive shaft to take the side loads. On the rotax motor the PTO crank bearings perform this job, partly why the provision 8 motors are so hugely beefy at the PTO end..... I'd imagine the builder came up with a seperate bearing for this? Also, any info on the weight? Looks like it weights a ton just looking at the photo, but then looks can be deceiving... Looks like it flies tho! LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=255009#255009 ________________________________ Message 6 _____________________________________ Time: 02:45:40 PM PST US Subject: Kolb-List: Re: Yet another engine option From: "JetPilot" I have always liked the looks of the BMW engine conversion. I have seen this on a Trike. my friend flys it, and it is smooth, powerful, with fuel injection and seems to work very well and trouble free. http://www.ultralightnews.com/engineinfo/bmwconversion.htm http://www.ultralightnews.com/engineinfo/bmwconversion.htm 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=255031#255031 Attachments: http://forums.matronics.com//files/bmwconversion_300.jpg ________________________________ Message 7 _____________________________________ Time: 03:24:41 PM PST US From: robert bean Subject: Re: Kolb-List: Re: Yet another engine option Mike, what is the displacement of that engine? BB On 28, Jul 2009, at 5:44 PM, JetPilot wrote: > > I have always liked the looks of the BMW engine conversion. I > have seen this on a Trike. my friend flys it, and it is smooth, > powerful, with fuel injection and seems to work very well and > trouble free. > > http://www.ultralightnews.com/engineinfo/bmwconversion.htm > > http://www.ultralightnews.com/engineinfo/bmwconversion.htm > > 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=255031#255031 > > > Attachments: > > http://forums.matronics.com//files/bmwconversion_300.jpg > > ________________________________ Message 8 _____________________________________ Time: 03:49:10 PM PST US From: Herb Subject: Re: Kolb-List: Re: Yet another engine option Another Mike...has a BMW engine on his MkIII... He made an adapter plate and used a c or e box as I recall.. Last I looked, it is for sale on Barnstormers...Herb At 04:44 PM 7/28/2009, you wrote: > >I have always liked the looks of the BMW engine conversion. I have >seen this on a Trike. my friend flys it, and it is smooth, powerful, >with fuel injection and seems to work very well and trouble free. > >http://www.ultralightnews.com/engineinfo/bmwconversion.htm > >http://www.ultralightnews.com/engineinfo/bmwconversion.htm > >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=255031#255031 > > >Attachments: > >http://forums.matronics.com//files/bmwconversion_300.jpg > > >Checked by AVG - www.avg.com >07/28/09 06:00:00 ________________________________ Message 9 _____________________________________ Time: 04:53:26 PM PST US Subject: Kolb-List: Re: Horizontal stabilizer cable thimble worn From: "JetPilot" John Hauck wrote: > > > Mike B: > > 3/32" > > john h > mkIII Let me think, 2400 hours, flying in conditions I would not even taxi in, and carrying more weight doing it than I ever have.... If 3/32 is good enough for you, its good enough for me ! I put in my order for new cable today :) Thanks John 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=255042#255042 ________________________________ Message 10 ____________________________________ Time: 05:07:52 PM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: Horizontal stabilizer cable thimble worn > Let me think, 2400 hours, flying in conditions I would not even taxi in, and carrying more weight doing it than I ever have.... If 3/32 is good enough for you, its good enough for me ! I put in my order for new cable today :) > > Thanks John > > Mike Mike B: That's close. Actually, as of my last flight: 2,980.8 hours MKIII 412.3 hours 912ULS Take care, john h mkIII ________________________________ Message 11 ____________________________________ Time: 07:09:59 PM PST US From: Dana Hague Subject: Kolb-List: Power loss Had some engine trouble today which has me scratching my head... Cuyuna ULII-02, Mikuni carb, airport near sea level, 80F and humid (don't know the actual RH). Had a 300 main jet, EGT maxed out around 1100, wouldn't hold rpm at 5500 cruise without playing the throttle, and hesitation when advancing the throttle from cruise. After flying today, I switched to a 290 main jet. EGT went up a bit, maybe 1150. Flew around for awhile, around cloud level (2000') at low cruise (4500 rpm). Rpm's wouldn't go up when I opened the throttle, then they dropped further to idle, regardless of the throttle position. I thought perhaps the throttle cable had broken, but it hadn't. Didn't think to check the fuel pressure gauge. A shot of prime did nothing. After a while (as I was, of course, gliding back to the airport) the rpm's picked up, first to around 4000, then back to normal. By the time I was down it was as if there was no problem. Plugs looked OK, perhaps a bit on the lean side but not by much. At any rate, I put the 300 jet back in and dropped the needle from the middle to the second clip notch. This put WOT at 1100 EGT again, and high cruise around 1150, with no hesitation when the throttle was advanced. After some ground running, I took off again and had no trouble. I'm still not clear on what's going on. Not a lean seizure if it kept running at idle for a minute or two. Fuel delivery problem? No evidence of that but the fuel level in the tanks was somewhat low (I filled before flying again). Carb ice? The conditions were certainly right and the outside of the intake manifold was wet, but that's normal and these engines aren't that susceptible to carb ice. At this point I just don't know. -Dana -- Politicians are those who deal with the problems which would not exist if they didn't exist. ________________________________ Message 12 ____________________________________ Time: 08:22:18 PM PST US Subject: Re: Kolb-List: Re: Yet another engine option From: Ellery Batchelder Jr I have?a EA-81 in my shop but I figure it would be to heavy for any Kolb at 240lbs But I think its the best alternative (just My opinion) if you can use an engine that weight ? Ellery in Maine Back in the Saddle again I did not know a B box would take that kind of horsepower, I wonder if it will last ???? I think I would have used a C box on an engine that big.?? Adapting a Rotax gear box to an existing engine sounds like a great idea though.? I would like to see an inexpensive and reliable alternative to the 912-S developed...? But I'm not holding my breath, people have been trying to do that for many years now with very little success. Mike -------- "NO FEAR" -? If you have no fear you did not go as fast as you could have !!! 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