---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Tue 06/23/09: 15 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:47 AM - Re: ASI (pj.ladd) 2. 05:41 AM - Re: Re: Cayuna 430 and Pterodactyl (Dan Walter) 3. 09:36 AM - Re: Thank you (dalewhelan) 4. 10:13 AM - Cuyuna oil, was: Re: Rotax 503 running problem (Dana Hague) 5. 10:19 AM - Re: Re: Cayuna 430 and Pterodactyl (Dana Hague) 6. 10:24 AM - Re: Re: Thank you (robert bean) 7. 07:01 PM - Cuyuna oil, was: Re: Rotax 503 running problem (dalewhelan) 8. 08:02 PM - Re: Re: Cayuna 430 and Pterodactyl (Ron @ KFHU) 9. 08:21 PM - Re: Re: Thank you (possums) 10. 08:46 PM - Re: Cayuna 430 and Pterodactyl (lucien) 11. 09:05 PM - Thank you VGs - John's favorite subject (possums) 12. 09:16 PM - Re: Re: Thank you (Ron @ KFHU) 13. 09:18 PM - Re: Thank you VGs - John's favorite subject (Ron @ KFHU) 14. 09:55 PM - Re: Thank you VGs - John's favorite subject (ces308) 15. 11:08 PM - Gentlemen, Lets all take a deep breath and relax a little.... (Nick Cassara) ________________________________ Message 1 _____________________________________ Time: 02:47:24 AM PST US From: "pj.ladd" Subject: Re: Kolb-List: ASI I saw the Vulcan fly at Toronto >> Hi Bob, An incredible a/c. I saw her first at Farnborough Airshow. During the previous years there had been a series of small, similarly shaped single seaters built to explore the delta wing characteristics(It was a long time ago) but on this occasion the three single seaters flew escort to this massive bomber. The flight was first seen at long distance as they waited for their display entrance, Just glimpsed through the clouds. It reminded me of that scene in `Shape of things to come` when the first flying machine seen for years flies over the settlement. Heart stopping! When the Vulcan, which hardly anyone knew existed, barrelled down the runway at nought feet with the afterburners roaring. WOW! When the Vulcan went to the States to take part in the bombing competitions, which it won, the US put up an intercept shield. The Vulcan crossed the coast, went knap of the earth, and no one saw her again until she popped up to circuit height at the destination field. Read Vulcan 403 (I think) for the story of how we managed to bomb the Stanley airfield during the Falklands disagreement. If the Argies had left it another two weeks the last of the Vulcan fleet would have been out of service. No one had experience of accurate bombing as the Vulcan was designed to drop an atomic bomb where accuracy was not required and they had to dig out an old Lancaster pilot from WW2 to brief the crew. We had no experience of long distance raids and had to cobble together a fleet of tankers and the Vulcan refuelling probes didn`t fit the kit. Museums were raided and probes pinched from displays .One bit of kit was being used as an ashtray in the Officers mess at one airfield. Typical Brit lash up and muddle through, but it worked. Just! The last remaining Vulcan is kept in the air by volunteers and public gifts of money and she cannot go on indefinitely at around a million pounds a year. Pat ________________________________ Message 2 _____________________________________ Time: 05:41:28 AM PST US From: "Dan Walter" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl ----- Original Message ----- From: "JetPilot" Sent: Monday, June 22, 2009 3:26 PM Subject: Kolb-List: Re: Cayuna 430 and Pterodactyl > > > captainron1(at)cox.net wrote: >> Yesterday I test flew a Rotax 440 on an Eipper MX. What a racket it >> makes. I I have flown in front of a Cuyuna Ul202 for over 170 hours and Rotax for over 100 hours. If the Cuyuna is jetted properly, Monitored for CHTs and EGTs and is given a fuel system that is in good order I believe they are just as reliable as the Rotax 377 and 477. My Ul202 quit as a result of a blocked fuel filter and I know of another that quit due to a bad squeez bulb, can't blame either on the engine. I would rather fly a 4 cycle, but weight and price are a deal breaker. Dan Walter Ultrastar, Cuyuna Palmyra, PA ________________________________ Message 3 _____________________________________ Time: 09:36:03 AM PST US Subject: Kolb-List: Re: Thank you From: "dalewhelan" Hi guys, I have not yet tried VGs, but a friend has bought some for our planes. There are reasons I question weather VGs would have helped in my situation. I was not stalled, I was sinking. I expect VGs would lower my stall, not sure they would stop the sink I was having when I was not stalled. I flew with a friend that has the same plane I do and has VG's. I think I remember him losing altitude at speeds lower than my stall but I don't remember for sure. Set me straight if I have this wrong, seems to me the VGs big advantage is more control (ailerons not stalled) and then second slightly more lift because wing is no stalled. Do I have this wrong? could I for instance climb at lower speeds than before? -------- Dale Whelan 503 powered Firestar II Projection, A simple and interesting Psychological concept Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249692#249692 ________________________________ Message 4 _____________________________________ Time: 10:13:30 AM PST US From: Dana Hague Subject: Kolb-List: Cuyuna oil, was: Re: Rotax 503 running problem At 07:38 PM 6/19/2009, Ron @ KFHU wrote: >...The advice I am getting here is to remain on 40/1 mixture that Cayuna >recommended. > >I guess I'll stick with that. Is there anything none exotic that I can get >at Walmart that will do the job, or do I need to get some special oil. I >think I read in the past that Pennzoil something or other is the >recommended oil, is that so? Ron, I'm using the "Pennzoil Air-Cooled 2-cycle oil" in my Cuyuna at the recommended 40:1 ratio, as did the previous owner. Some people say "use 50:1, the oils are better today" but I'll stick with the factory recommendation. Change oil ratio and you need to change jetting, too... and the factory recommended jetting works, too. Advance Auto Parts sells the Pennzoil but I usually buy it by the case from . -Dana -- Society is like a stew. If you don't keep it stirred up, you get a lot of scum on top. ________________________________ Message 5 _____________________________________ Time: 10:19:37 AM PST US From: Dana Hague Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl At 03:26 PM 6/22/2009, JetPilot wrote: >The Rotax 447 is a far Superior motor to the Cuyuna.... I would not fly >with an such unreliable and touchy motor as the Cuyuna... Everybody puts down the Cuyuna, but I have yet to see anything other than anecdotal evidence that there's any significant difference in reliability compared to the Rotax. Any 2-stroke engine needs proper care and attention, and the Cuyunas gained their bad reputation in the early days of ultralights when pilots raised on Continentals and others with no engine experience at all didn't take proper care of them. If the 447 had been around at the same time I'll bet it would have had the same [bad] reputation. -Dana -- Shotgun wedding: A case of wife or death. ________________________________ Message 6 _____________________________________ Time: 10:24:11 AM PST US From: robert bean Subject: Re: Kolb-List: Re: Thank you I'm sure many of us have shared the experience of somehow making a non-damaging landing out of one that seemed only a second or two earlier to be sure catastrophe. Part luck, part good responses, part that wonderful ground effect cushion. Big heavies are also subject to down drafts but less immediate due to their mass. Watching a FF approach in gusty wind makes me glad to have ole tubby, the MkIII. I respect the atmosphere more than ever, especially now that I am older and less bold. But, if you do want to regain a feel for the plane after a period of little flight you would do better going out and wrestling the breezes than waiting for dead calm only. BB, more of a sissy than I wuz On 23, Jun 2009, at 12:35 PM, dalewhelan wrote: > > > Hi guys, I have not yet tried VGs, but a friend has bought some for > our planes. > There are reasons I question weather VGs would have helped in my > situation. > I was not stalled, I was sinking. > I expect VGs would lower my stall, not sure they would stop the > sink I was having when I was not stalled. > I flew with a friend that has the same plane I do and has VG's. I > think I remember him losing altitude at speeds lower than my stall > but I don't remember for sure. > Set me straight if I have this wrong, seems to me the VGs big > advantage is more control (ailerons not stalled) and then second > slightly more lift because wing is no stalled. > Do I have this wrong? could I for instance climb at lower speeds > than before? > > -------- > Dale Whelan > 503 powered Firestar II > Projection, A simple and interesting Psychological concept > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=249692#249692 > > ________________________________ Message 7 _____________________________________ Time: 07:01:15 PM PST US Subject: Kolb-List: Cuyuna oil, was: Re: Rotax 503 running problem From: "dalewhelan" I hope I don't tick anybody off with this. While it is true that adding oil leans the fuel mixture, and some have even tried to change their jetting by altering fuel ratio. Changing from no oil premixed to 20:1 changed the amount of fuel delivered by 5% Changing from 50 to 20:1 changes your fuel by 3% I am not sure how many ccs/ min a Bing jet like 158 flows, if you had your jetting perfect to start with I would guess these oil changes would result in a change of about 1 size. I normally only jet to the closest main when I really want something to run, Some people I know would get a half size by changing their coolant temp 5degrees C Hotter=Richer -------- Dale Whelan 503 powered Firestar II Projection, A simple and interesting Psychological concept Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249739#249739 ________________________________ Message 8 _____________________________________ Time: 08:02:09 PM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl Well today I had the first real flight in the Cuyuana powered Duck got only about 15 miles from the strip I took off, when I had to put it down in a graded pre construction job site. No problems at all. But the engine did not act well. It look like there was bubbling right at the fuel filter. Maybe it has an air leak. got it trailed the rest of the way to my hanger, now I got a nice place to work on it but little time. We also found a length wise crack in the wood prop. Its a two blader prop 54 inch long and the hub thickness is 4cm, I tried measuring in inches but could not get a round number. Anyway I need a new prop ( like yesterday). It looks like a 2/1 reduction belt drive with a 4 bolt pattern and its counter clock turning. If anyone has one of these laying around and wants to sell it FedEx overnight contact me offline. Any ideas as to why the motor spattered when I advanced the prop to gull power would be appreciated. Would a fuel pump do that? air leak in the line, too rich a jetting? It run okay kinda in mid power setting but when I gave it full power it did okay for a while and then started chocking. I got one day or so to get it straightened out. Do we have any Kolbers in Tucson or the area that can fly a 60 mile track using GPS way points out of KFHU Thursday and Friday. You want to have some fun and make some money let me know. One way or another the job gotta be done. ________________________________ Message 9 _____________________________________ Time: 08:21:41 PM PST US From: possums Subject: Re: Kolb-List: Re: Thank you At 12:35 PM 6/23/2009, you wrote: > >Hi guys, I have not yet tried VGs, but a friend has bought some for >our planes. >There are reasons I question weather VGs would have helped in my situation. > >Do I have this wrong? could I for instance climb at lower speeds than before? If you have $100 to spare, it will be the best $100 you have ever spent on your plane. You can climb at an unbelievable angle at an unimaginable low speed without stalling -----at least on a single seater (stall reduced at least 5 or 6 mph, control increased - but you would have to experience that part of to know what I'm talking about.) This thread has been beaten to death. If you don't want to reinvent the wheel, buy them from www.landshorter.com and use their templates and instructions to install them, they've already done the work. Most of these were shot with VGs and are all, of course, "Photo shopped" and no ducks were killed or injured and not eaten during the making of these films as per PETA guidelines. http://video.google.com/videoplay?docid=-4600043392041186975 http://video.google.com/videoplay?docid=-8022448200127542755 http://video.google.com/videoplay?docid=-5232234046747826901 http://video.google.com/videoplay?docid=2622632755661898541 ________________________________ Message 10 ____________________________________ Time: 08:46:53 PM PST US Subject: Kolb-List: Re: Cayuna 430 and Pterodactyl From: "lucien" Dana wrote: > > Everybody puts down the Cuyuna, but I have yet to see anything other than > anecdotal evidence that there's any significant difference in reliability > compared to the Rotax. Any 2-stroke engine needs proper care and > attention, and the Cuyunas gained their bad reputation in the early days of > ultralights when pilots raised on Continentals and others with no engine > experience at all didn't take proper care of them. If the 447 had been > around at the same time I'll bet it would have had the same [bad] reputation. > > -Dana > > -- > Shotgun wedding: A case of wife or death. The early days of 2-strokes were really tough on their reputation. The engines themselves had their own problems, but the non-existent training/experience in their use by primarily 4-stroke drivers was far and away the biggest problem. At the time, they didn't know how to install em, prop em, jet em, fuel em and maintain em. It was nothing like the big iron in any of these respects for sure. Virtually all my experience is with the Rotax aircooled motors so don't know much about the history of the Cuyuna. But the Rotax have gone through so many updates since their early introduction that I've lost count. The biggest ones have been improvements to the bottom end, particularly beefing up of the crank and its bearings especially at the PTO end, the provision 4 and then 8 crankcases for reliable mounting of the gearboxes, the move to CDI, and a bunch more smaller changes here and there. The other significant enhancement is the field experience, now in the decades range, which tells us how to operate and maintain the motors. The jetting charts, breakin procedures, lots of folks around who knew the "gotchas" and there are a few here and there with all the Rotaxen. That more than anything else has been the biggest improvement in the reliability of the 2-strokes, in addition to the improvements of the motors themselves of course. All that said, the very early non-provision points Rotaxen did break cranks from time to time, mostly on the quicksilver which used a hard coupling shaft attached directly to the crank, making for a bit of a PR problem for Rotax. But by the time of the provision 8 motors and the wide usage of the gearbox, this became practically a thing of the past (except for the 582 which still is a bit weak in the crankshaft area). Not to mention all the experience we have with them, that has virtually eliminated the 2-stroke troubles of the old days. But the bad rap lingers on, mostly from folks who don't much experience running them or 4-stroke drivers trying to use their old skills with them. LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249752#249752 ________________________________ Message 11 ____________________________________ Time: 09:05:22 PM PST US From: possums Subject: Kolb-List: Thank you VGs - John's favorite subject > >If you don't want to reinvent the wheel, buy them from >www.landshorter.com They are little bitty things, easy to apply & hard to see. If I have a decent headwind, I can lower a beer to the guys on the ground with a fishing line. If the wind's just right, I can fly backwards. If the wind's perfect I can just tie a rope to my plane & I don't have to use the engine at all. ________________________________ Message 12 ____________________________________ Time: 09:16:02 PM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Thank you Lol. ================= ---- possums wrote: ============ At 12:35 PM 6/23/2009, you wrote: > >Hi guys, I have not yet tried VGs, but a friend has bought some for >our planes. >There are reasons I question weather VGs would have helped in my situation. > >Do I have this wrong? could I for instance climb at lower speeds than before? If you have $100 to spare, it will be the best $100 you have ever spent on your plane. You can climb at an unbelievable angle at an unimaginable low speed without stalling -----at least on a single seater (stall reduced at least 5 or 6 mph, control increased - but you would have to experience that part of to know what I'm talking about.) This thread has been beaten to death. If you don't want to reinvent the wheel, buy them from www.landshorter.com and use their templates and instructions to install them, they've already done the work. Most of these were shot with VGs and are all, of course, "Photo shopped" and no ducks were killed or injured and not eaten during the making of these films as per PETA guidelines. http://video.google.com/videoplay?docid=-4600043392041186975 http://video.google.com/videoplay?docid=-8022448200127542755 http://video.google.com/videoplay?docid=-5232234046747826901 http://video.google.com/videoplay?docid=2622632755661898541 -- kugelair.com ________________________________ Message 13 ____________________________________ Time: 09:18:13 PM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Thank you VGs - John's favorite subject Now if there ever was a target for a paint ball gun, that fat balloon (an I ain't talking about Mellisa) was it. =========================================== ---- possums wrote: ============ > >If you don't want to reinvent the wheel, buy them from >www.landshorter.com They are little bitty things, easy to apply & hard to see. If I have a decent headwind, I can lower a beer to the guys on the ground with a fishing line. If the wind's just right, I can fly backwards. If the wind's perfect I can just tie a rope to my plane & I don't have to use the engine at all. -- kugelair.com ________________________________ Message 14 ____________________________________ Time: 09:55:24 PM PST US Subject: Kolb-List: Re: Thank you VGs - John's favorite subject From: "ces308" That is the next thing going on my airplane !!!!Thank you for that report...although I was already convinced..... chris ambrose M3X/Jab/ 28.5 hrs Read this topic online here: http://forums.matronics.com/viewtopic.php?p=249757#249757 ________________________________ Message 15 ____________________________________ Time: 11:08:23 PM PST US From: "Nick Cassara" Subject: Kolb-List: Gentlemen, Lets all take a deep breath and relax a little.... Gentlemen, Lets all take a deep breath and relax a little....ladies your doing fine! Since I do not have a single hour in a Kolb of any type, please allow me to share an insight with you all. I have learned a lot about Kolb's from this on line "family" of sorts. I am grateful to you all. Like all families you do not all agree on everything, and sometimes on nothing! You all fly similar, but different planes. You all fly in very different places. You all have different amounts of time in your Kolb, and other aircraft, so all of your judgments are shaped by your experiences, which are all different. If I was John H probably would not have VG's on my plane. If I had the hour in my plane that John does there would not be a whole lot of point to having VG's . If I ever get this pile of parts to look like an airplane, I will have VG's. Thirty years from now I might have as much time in the air as John, but I doubt it. I then would probable recommend VG to everyone because that is what I would know. I am flown, at work, by a group of high time Alaskan Super Cub pilots some with VG's and some without. No two cubs are the same, BUT they all perform beautifully in the hands of their pilots. So the long and the short of this dribble is that none of you are right, and none of you are wrong!!!!!!! You all just see the world through the filter of your experience! Please Keep teaching.I have a lot more to learn for you all! Sincerely, Nick Cassara Palmer, Alaska Proto type Kolbra waiting to be finished! 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