---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Thu 07/02/09: 31 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:09 AM - Re: New Videos (loseyf@comcast.net) 2. 04:38 AM - Re: HACman system (Thom Riddle) 3. 05:04 AM - Deviation cards (Watkinsdw) 4. 06:09 AM - Re: Deviation cards (Larry Cottrell) 5. 06:55 AM - Re: Deviation cards (robert bean) 6. 07:12 AM - Re: Deviation cards (Jim Kmet) 7. 07:47 AM - Re: Deviation cards (John Hauck) 8. 08:53 AM - HACman system (Larry Cottrell) 9. 09:07 AM - Re: Deviation cards (Watkinsdw) 10. 10:22 AM - New alternate engine on my MKIII (Jason Omelchuck) 11. 10:51 AM - Re: New alternate engine on my MKIII (John Hauck) 12. 11:27 AM - Re: New alternate engine on my MKIII (Jason Omelchuck) 13. 11:28 AM - Re: New alternate engine on my MKIII (lucien) 14. 11:43 AM - Re: Re: New alternate engine on my MKIII (robert bean) 15. 11:49 AM - Re: Re: New alternate engine on my MKIII (John Hauck) 16. 11:56 AM - Re: New alternate engine on my MKIII (Jason Omelchuck) 17. 12:10 PM - Re: New alternate engine on my MKIII (Jason Omelchuck) 18. 01:07 PM - Re: Re: New alternate engine on my MKIII (John Hauck) 19. 01:53 PM - Re: New alternate engine on my MKIII (Jason Omelchuck) 20. 01:55 PM - Re: New alternate engine on my MKIII (HShack@aol.com) 21. 01:55 PM - Re: New alternate engine on my MKIII (HShack@aol.com) 22. 03:19 PM - Re: Re: Thanks - Appreciate differences in VG discussion now! (b young) 23. 03:34 PM - Re: Re: Thanks - Appreciate differences in VG discussion now! (Richard Girard) 24. 04:45 PM - Re: New alternate engine on my MKIII (Jason Omelchuck) 25. 04:52 PM - Re: Re: New alternate engine on my MKIII (Herb) 26. 05:29 PM - Twinstar plans needed (geurink) 27. 06:41 PM - Re: Twinstar plans needed (Jean Bilodeau) 28. 07:40 PM - Re: Twinstar plans needed (geurink) 29. 09:07 PM - Re: Re: New alternate engine on my MKIII (chris davis) 30. 10:23 PM - Re: New alternate engine on my MKIII (Jason Omelchuck) 31. 10:30 PM - Re: New alternate engine on my MKIII (Jason Omelchuck) ________________________________ Message 1 _____________________________________ Time: 04:09:19 AM PST US Subject: Re: Kolb-List: New Videos From: loseyf@comcast.net Fran.losey@alber.com ------Original Message------ From: Chris Ambrose Sender: owner-kolb-list-server@matronics.com ReplyTo: kolb-list@matronics.com Sent: Jul 1, 2009 10:00 PM Subject: Kolb-List: New Videos Hello All ! Now don't beat me up on this...this was my first time doing this,so cut me some slack...Not sure how to post the site like some of you guys,but it you go to YouTube and search Kolb,Kolb aircraft,or Kolb Mark 3 Xtra and look for the one by ces308.I will get some on from our fly-in this weekend too. Enjoy! chris ambrose m3x/JAB N327CS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251052#251052 Sent from my Verizon Wireless BlackBerry ________________________________ Message 2 _____________________________________ Time: 04:38:59 AM PST US Subject: Kolb-List: Re: HACman system From: "Thom Riddle" Larry C. Thanks for posting your initial results of the HACman. WIth my GA flying background, it took me a while to get used to not manually adjusting mixture when I first started flying a 912. I still like the ability to manually adjust mixture in-flight. When I fly really slow the Bing 64s allow the mixture to get a lot richer than ideal. When tuned properly, they do a fine job anywhere near normal cruise power. I may get one these someday. I believe it works on the same principle that Jack Hart used to rig his own manual mixture control, but not sure. At the moment, I'm not flying 'cuz one of my partners broke our airplane a month ago (no injuries) and we're still waiting on the insurance adjuster to do his thing. It may be totaled, may not. -------- Thom Riddle Buffalo, NY http://riddletr.googlepages.com/sportpilot-cfi http://riddletr.googlepages.com/a%26pmechanix A complex system that works is invariably found to have evolved from a simple system that works. - John Gaule Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251091#251091 ________________________________ Message 3 _____________________________________ Time: 05:04:23 AM PST US Subject: Kolb-List: Deviation cards From: "Watkinsdw" Greetings, Looking at Larry C's great pictures of his panel and the interesting landscape he flew over brought to mind a question I've been pondering. My Kolb MkIII-C isn't equipped with a compass deviation card. I think that in 'general aviation,' it's required. Does this rule apply to Experimentals? Thanks, Dave Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251095#251095 ________________________________ Message 4 _____________________________________ Time: 06:09:32 AM PST US From: "Larry Cottrell" Subject: Re: Kolb-List: Deviation cards Yep!, I had one but it dried up and fell off. The compass actually reads 240 anywhere I go. Been meaning to fix it. :-/ Larry ----- Original Message ----- From: Watkinsdw To: kolb-list@matronics.com Sent: Thursday, July 02, 2009 6:03 AM Subject: Kolb-List: Deviation cards Greetings, Looking at Larry C's great pictures of his panel and the interesting landscape he flew over brought to mind a question I've been pondering. My Kolb MkIII-C isn't equipped with a compass deviation card. I think that in 'general aviation,' it's required. Does this rule apply to Experimentals? Thanks, Dave Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251095#251095 ------------------------------------------------------------------------- ----- Checked by AVG - www.avg.com 07/01/09 18:07:00 ________________________________ Message 5 _____________________________________ Time: 06:55:36 AM PST US From: robert bean Subject: Re: Kolb-List: Deviation cards depends on how much of a deviate you are. The rule with certificated (standard) aircraft is that whatever you have stuck in the panel is supposed to be functional. If it doesn't work remove it. Compass card presence has rarely been enforced as evidenced by so many nearly illegible ones out there. First thing to do if you are concerned is lay out a temporary compass rose on the ground using ribbon and a boy scout compass. Then rotate the plane on it to check accuracy. I was pleased to discover mine was nearly dead on. At least within a degree or two. BB On 2, Jul 2009, at 8:03 AM, Watkinsdw wrote: > > > Greetings, > Looking at Larry C's great pictures of his panel and the > interesting landscape he flew over brought to mind a question I've > been pondering. > > My Kolb MkIII-C isn't equipped with a compass deviation card. > I think that in 'general aviation,' it's required. Does this rule > apply to Experimentals? > > Thanks, > Dave > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=251095#251095 > > ________________________________ Message 6 _____________________________________ Time: 07:12:57 AM PST US From: "Jim Kmet" Subject: Re: Kolb-List: Deviation cards My A & P wants to see it at every condition inspection, so,,,,,,,,,,,,,,,, I pull it from the logbook, place it in the plane' til he`s signed off everything, Then I put it back in the log book 'til next year. .........really. Jim ----- Original Message ----- From: "Watkinsdw" Sent: Thursday, July 02, 2009 7:03 AM Subject: Kolb-List: Deviation cards > > Greetings, > Looking at Larry C's great pictures of his panel and the interesting > landscape he flew over brought to mind a question I've been pondering. > > My Kolb MkIII-C isn't equipped with a compass deviation card. > I think that in 'general aviation,' it's required. Does this rule apply to > Experimentals? > > Thanks, > Dave > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=251095#251095 > > > ________________________________ Message 7 _____________________________________ Time: 07:47:04 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Deviation cards > My A & P wants to see it at every condition inspection, so,,,,,,,,,,,,,,,, > I pull it from the logbook, place it in the plane' til he`s signed off > everything, Then I put it back in the log book 'til next year. > .........really. > Jim Be careful! The "deviation card police" are everywhere. I have tried several times to swing the compass in my mkIII, but can never get close. It will give you an accurate reading at one point in the compass rose. I even used a "real" compass rose at Wetumpka Airport, but that didn't help. ; -) Primary nav is GPS, which is not 100% reliable. It'll hicough once in a while and leave me hanging, but only once in a blue moon. If the GPS goes down, I can still use the whiskey compass to maintain a heading. May not know what the heading is, but have a general idea. This will get me to a road, river, railroad, etc. From there I can find a town and an airport. If I find an interstate highway, it is a simple task to get down on the deck and read the road signs. Other highways work, but normally their signs aren't as big as those on the interstate. My FAA Designee was not interested in my compass card, but he did a thorough job of inspecting the aircraft, without the mickey mouse BS that some folks have to contend with. john h mkIII ________________________________ Message 8 _____________________________________ Time: 08:53:05 AM PST US From: "Larry Cottrell" Subject: Kolb-List: HACman system Today I flew to the Alvord to test fuel burn close to the ground with the system. First I marked the front tanks fuel level, so that I could be at least close to correct. I started and warmed up the plane using the back tank, and when it was ready to go, I switched to the front tank, climbing to 500 feet to activate the GPS timing system, then only maintaining enough altitude to clear the hills between me and the Alvord. I did not change the throttle position once I established about 5360 RPM's until I set up for a landing here at the house. I did dial in the EGT to 1350 degrees and changed the setting to match the MSL. Keep in mind that the higher you go, the richer the fuel mixture, so on occasion a change was required. All of this including a couple of video's will be posted to my blog later in the day. The flight covered one hour and 24 minutes from warm up to landing. I burned a total of three gallons of fuel from both tanks. I burned 2.3 gallons on the timed front tank flight, and 7 tenths of a gallon on warm up and the extra 24 minutes. The OAT was 70 degrees, winds mostly calm, approximately 5 MPH wind out of the SW. Average speed of 62 MPH. The CHT's were well within limits at around 306 degrees. A great day for flying, and I am very happy with the results. Larry C ________________________________ Message 9 _____________________________________ Time: 09:07:12 AM PST US Subject: Kolb-List: Re: Deviation cards From: "Watkinsdw" Thanks, guys, The great thing about posting questions here is that the answers are either informative, or entertaining. Sometimes, they're both! Dave Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251150#251150 ________________________________ Message 10 ____________________________________ Time: 10:22:13 AM PST US From: "Jason Omelchuck" Subject: Kolb-List: New alternate engine on my MKIII Well it's a long story but I will try to make it short. A couple of years ago I finished my MKIII with an BMW R100 (air cooled) engine on it. After flying it about 50 hours over the last year and a half, I decided that it was not going to provide the power and reliability I demanded. I could climb at about 800'/min but fast cruise was 60mph. I also had teething problems that required me to work on it a lot. There have been other successful conversions of this engine but I decided it was not for me. A couple of weeks ago I finished the installation of a 2005 Yamaha Vector snowmobile engine with a Rotax 3.47 gearbox. I now have about 5 hours on it and am ready to say that this engine just might provide me with the performance I was looking for. My rates of climb are in 1000'/min range at 1000# gross and I can wind the airplane up to 90mph at full throttle in level flight. I have chosen 70mph as my cruise as that is what feels good with my airplane. Only time will tell about the reliability but I do have a good feeling about this engine. Below is a link to a Utube video of the engine on the airplane. http://www.youtube.com/watch?v=RHYwVjGNZJc Jason Omelchuck Kolb MKIII Yamaha powered Portland, OR ________________________________ Message 11 ____________________________________ Time: 10:51:51 AM PST US From: "John Hauck" Subject: Re: Kolb-List: New alternate engine on my MKIII Tell us about the engine. Most of us southern boys don't have much knowledge of snow machines. john h mkIII A couple of weeks ago I finished the installation of a 2005 Yamaha Vector snowmobile engine with a Rotax 3.47 gearbox. Jason Omelchuck ________________________________ Message 12 ____________________________________ Time: 11:27:07 AM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" The 2005 Yamaha Vector Snowmobile engine is a liquid cooled 4 stroke 973cc 3 cylinder carbureted engine. It is rated at 120 HP at 8500 RPM. It has electric carb heat. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251175#251175 ________________________________ Message 13 ____________________________________ Time: 11:28:01 AM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "lucien" To answer your question about the gearbox noise - that noise is perfectly normal when running the rk-400 clutch. It's normal gear noise, you'll notice it's more pronounced when turning the prop one way vs the other, which has to do with the helical gears. The noise is just the slight amount of lash you normally have.... LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251176#251176 ________________________________ Message 14 ____________________________________ Time: 11:43:03 AM PST US From: robert bean Subject: Re: Kolb-List: Re: New alternate engine on my MKIII What RPMs have you been using? snow can be fun too: http://www.youtube.com/watch? v=4amTFCen0ZA&feature=related BB On 2, Jul 2009, at 2:24 PM, Jason Omelchuck wrote: > tech.com> > > The 2005 Yamaha Vector Snowmobile engine is a liquid cooled 4 > stroke 973cc 3 cylinder carbureted engine. It is rated at 120 HP > at 8500 RPM. It has electric carb heat. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=251175#251175 > > ________________________________ Message 15 ____________________________________ Time: 11:49:53 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: New alternate engine on my MKIII > The 2005 Yamaha Vector Snowmobile engine is a liquid cooled 4 stroke 973cc > 3 cylinder carbureted engine. It is rated at 120 HP at 8500 RPM. It has > electric carb heat. What gear box ratio? Sounds like a good engine. Yamaha makes good stuff. Are you able to use all 8500 rpm? Where does it get its max torque? That will probably be where you want to cruise this engine. Convenient with carb heat. Are you running oil cooler and coolant radiator? Seems, just from looking at the video, those two coolers are going to be a big increase in drag. Just guessing. We have good luck mounting the coolers behind the fuselage. I even have mine piggy backed' john h mkIII ________________________________ Message 16 ____________________________________ Time: 11:56:30 AM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" I am cruising at 7000 rpm and have it propped for max level flight RPM of 8100 rpm. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251181#251181 ________________________________ Message 17 ____________________________________ Time: 12:10:04 PM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" John Hauck wrote: > > > The 2005 Yamaha Vector Snowmobile engine is a liquid cooled 4 stroke 973cc > > 3 cylinder carbureted engine. It is rated at 120 HP at 8500 RPM. It has > > electric carb heat. > > > > > > > What gear box ratio? > > Sounds like a good engine. Yamaha makes good stuff. > > Are you able to use all 8500 rpm? > > Where does it get its max torque? That will probably be where you want to > cruise this engine. > > Convenient with carb heat. > > Are you running oil cooler and coolant radiator? > > Seems, just from looking at the video, those two coolers are going to be a > big increase in drag. Just guessing. We have good luck mounting the > coolers behind the fuselage. I even have mine piggy backed' > > john h > mkIII The gearbox is 3.47 ratio There is no oil cooler but there is a water to oil heat exchanger build into the engine. I know the radiators might be overkill, but I really wanted to design a system that would cool and not have to dive right back in if it was running too hot. There is a thermostat in the system and the water temp is running cool now, so after this summer, I might try just running 1 cooler and see what happens. Cooling was one of the issues I had with my last engine and it is very gratifying to be able to operate at full throttle for as long as I want and have the temperatures remain well in the green. On a side note. On one of my full throttle level flight tests, the right side door popped in. I heard it but did not see what had happened until I landed. I just opened the door and put some slight pressure on the inside and it popped right back out. Jason Kolb MKIII Yamaha Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251183#251183 ________________________________ Message 18 ____________________________________ Time: 01:07:14 PM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: New alternate engine on my MKIII > On a side note. On one of my full throttle level flight tests, the right side door popped in. I heard it but did not see what had happened until I landed. I just opened the door and put some slight pressure on the inside and it popped right back out. > > Jason Are you flying with a slip/skid indicator or yaw string ? Might have been out of yaw trim, side loading the door. john h mkIII ________________________________ Message 19 ____________________________________ Time: 01:53:52 PM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" I fly with a yaw string, and yes it is possible I "wagged my tail" and put a side load on the door. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251206#251206 ________________________________ Message 20 ____________________________________ Time: 01:55:02 PM PST US From: HShack@aol.com Subject: Re: Kolb-List: New alternate engine on my MKIII Howard Shackleford FS II SC In a message dated 7/2/2009 1:22:31 P.M. Eastern Daylight Time, jason@trek-tech.com writes: A couple of weeks ago I finished the installation of a 2005 Yamaha Vector snowmobile engine with a Rotax 3.47 gearbox. **************Dell Summer Savings: Cool Deals on Popular Laptops =93 Shop Now! =http:%2F%2Faltfarm.mediaplex.com%2Fad%2Fck%2F12309%2D81939%2D1629%2D1) ________________________________ Message 21 ____________________________________ Time: 01:55:44 PM PST US From: HShack@aol.com Subject: Re: Kolb-List: New alternate engine on my MKIII Is that the 120 hp or the 80 hp? Howard Shackleford FS II SC In a message dated 7/2/2009 1:22:31 P.M. Eastern Daylight Time, jason@trek-tech.com writes: A couple of weeks ago I finished the installation of a 2005 Yamaha Vector snowmobile engine with a Rotax 3.47 gearbox. I now have about 5 hours on it and am ready to say that this engine just might **************Dell Summer Savings: Cool Deals on Popular Laptops =93 Shop Now! =http:%2F%2Faltfarm.mediaplex.com%2Fad%2Fck%2F12309%2D81939%2D1629%2D1) ________________________________ Message 22 ____________________________________ Time: 03:19:30 PM PST US From: "b young" Subject: RE: Kolb-List: Re: Thanks - Appreciate differences in VG discussion now! Boyd, I take it you've never learned to do a falling leaf stall. Rick do not archive been there and done that. The main purpose of doing it is to learn what the plane will handle like when approaching a stall, so as to not get into one. I used to love doing spins, great fun. But now I am older and wiser. Boyd Do not archive ________________________________ Message 23 ____________________________________ Time: 03:34:53 PM PST US Subject: Re: Kolb-List: Re: Thanks - Appreciate differences in VG discussion now! From: Richard Girard I understand. I fly the wife around a lot in the back seat of my trike and that nice easy flying is kind of addicting. Couldn't resist the jab, though. :-) Rick do not archive On Thu, Jul 2, 2009 at 5:16 PM, b young wrote: > Boyd, I take it you've never learned to do a falling leaf stall. > > > Rick > > do not archive > > been there and done that. The main purpose of doing it is to learn what > the plane will handle like when approaching a stall, so as to not get into > one. I used to love doing spins, great fun. But now I am older and > wiser. > > > Boyd > > Do not archive > > > * > > * > > ________________________________ Message 24 ____________________________________ Time: 04:45:45 PM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" The Yamaha Vector is a 120 HP engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251232#251232 ________________________________ Message 25 ____________________________________ Time: 04:52:20 PM PST US From: Herb Subject: Re: Kolb-List: Re: New alternate engine on my MKIII Didn't find a 2005 Yamaha for sale.. I notice that the snowmobile is abt 10k .What do you have in the installation? Herb At 06:45 PM 7/2/2009, you wrote: > >The Yamaha Vector is a 120 HP engine > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=251232#251232 > > >Checked by AVG - www.avg.com >07/02/09 05:54:00 ________________________________ Message 26 ____________________________________ Time: 05:29:49 PM PST US Subject: Kolb-List: Twinstar plans needed From: "geurink" Long story short: Where can I get a set of plans for the Twinstar? What's the difference between that and a Mark II? Here's the story if you're interested: Just bought me a Twinstar project for $3k which I figured if the airplane was trash would at least get me a good engine and prop for a decent price. The ad said "I have all plans and drawings". When I got it home and had time to dive into it, however, all that was in the plans tube was a full-size rib sheet. I DO have a well-preserved builder's manual at least, but that doesn't help too much without the plans. Called the seller up, he said he actually DOESN'T have the plans but that I could get them on a CD from The New Kolb. Sounded fishy to me, but I didn't really have any recourse. So I calls TNK, and they, of course, do NOT have a CD with Twinstar plans on it, but he said I could for sure get plans from someone on The Kolb List. SO, I appeal to your collective wisdom and resources. Where, indeed, can such apparently rare and esoteric information be found? Ideally, this incomplete kit will be shipped to Brazil where it will be finished and floated and eventually used in missionary service among remote tribes on the upper Amazon river. If you could help bring this to pass, I'd really appreciate it! Michael Geurink Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251239#251239 ________________________________ Message 27 ____________________________________ Time: 06:41:01 PM PST US Subject: Kolb-List: Re: Twinstar plans needed From: "Jean Bilodeau" I do have a set of plans for my twinstar mkII. But I don't have the builder's /operation manual. I don't have the necessary equipment to scan such large pages but I will try the local copy shop, maybe they can help me. if I can get them scanned, would you do the same for your builder manual? That would be very helpful for both of us. jean Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251245#251245 ________________________________ Message 28 ____________________________________ Time: 07:40:30 PM PST US Subject: Kolb-List: Re: Twinstar plans needed From: "geurink" EXCELLENT! Thank you Jean. I'd love to do that. Contact me at geurink(at)argo(dot)com(dot)br so we can work out the details. Anyone else? Michael Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251251#251251 ________________________________ Message 29 ____________________________________ Time: 09:07:45 PM PST US From: chris davis Subject: Re: Kolb-List: Re: New alternate engine on my MKIII My experience with 4 stroke motorcycles tells me that a 4stroke engine runn ing at- 7000 rpms is on the edge of explosion- but =0Ai am old and- m y racing- mcs was in the 70's-- I can live with a 5000 rpm 4 stroke b ut 7 is just too many movements for me in a minute when I think about a 4 o r 5 hour cross country stretch!- Chris=0A=0A=0A=0A=0A____________________ ____________=0AFrom: Jason Omelchuck =0ATo: kolb-list@ matronics.com=0ASent: Thursday, July 2, 2009 2:54:12 PM=0ASubject: Kolb-Lis t: Re: New alternate engine on my MKIII=0A=0A--> Kolb-List message posted b y: "Jason Omelchuck" =0A=0AI am cruising at 7000 rpm a nd have it propped for max level flight RPM of 8100 rpm.=0A=0A=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p =========================0A =========================0A =0A=0A ________________________________ Message 30 ____________________________________ Time: 10:23:54 PM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" You can usually get a 2005 to 2007 snowmobile that has very low miles on it for around 4K to 5K. After you take out the engine and strip the wire harness, you can sell the parts for 1K to 1.5K so you have 3K to 4K in the engine. My entire conversion including the Rotax gearbox was about 7K. I purchased the gearbox adapter from a guy and I will pass along his contact in a separate post. Jason uote] herbgh(at)nctc.com wrote: > Didn't find a 2005 Yamaha for sale.. I notice that the snowmobile is > abt 10k .What do you have in the installation? Herb Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251274#251274 ________________________________ Message 31 ____________________________________ Time: 10:30:57 PM PST US Subject: Kolb-List: Re: New alternate engine on my MKIII From: "Jason Omelchuck" I believe you will find that the technology used in these engines is far superior to what was in the 70's. Only time will tell, but I do remember the people who were used to flying lycomings said the same thing about the "ticking bomb" rotax 912's when they came out. I would be relucent to condem these engines because of expierences of almost 40 years ago. Bus as I said, only time will tell. [quote="capedavis(at)yahoo.com"]My experience with 4 stroke motorcycles tells me that a 4stroke engine running at 7000 rpms is on the edge of explosion but i am old and my racing mcs was in the 70's I can live with a 5000 rpm 4 stroke but 7 is just too many movements for me in a minute when I think about a 4 or 5 hour cross country stretch! Chris From: Jason Omelchuck Sent: Thursday, July 2, 2009 2:54:12 PM Subject: Re: New alternate engine on my MKIII I am cruising at 7000 rpm and have it propped for max level flight RPM of 8100 rpm. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251181======================= > [b] Read this topic online here: http://forums.matronics.com/viewtopic.php?p=251275#251275 ------------------------------------------------------------------------------------- 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.