---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Wed 06/24/09: 24 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:07 AM - R: VGs (Carlo Tura) 2. 03:35 AM - cuyunna (Ted Cowan) 3. 04:11 AM - Re: Re: Thank you (pj.ladd) 4. 04:20 AM - Re: R: VGs (pj.ladd) 5. 04:37 AM - Re: Re: Cayuna 430 and Pterodactyl (Dana Hague) 6. 06:02 AM - Re: Re: Cayuna 430 and Pterodactyl (Ron @ KFHU) 7. 06:35 AM - Re: Gentlemen, Lets all take a deep breath and relax a little.... (TheWanderingWench) 8. 06:40 AM - Re: Re: Cayuna 430 and Pterodactyl (John Hauck) 9. 06:42 AM - Re: Gentlemen, Lets all take a deep breath and relax a little.... (robert bean) 10. 06:54 AM - Re: Cayuna 430 and Pterodactyl (williamtsullivan@att.net) 11. 07:03 AM - Re: Re: Cayuna 430 and Pterodactyl (Blumax008@aol.com) 12. 07:39 AM - Re: Re: Cayuna 430 and Pterodactyl (Denny Rowe) 13. 08:06 AM - Re: Re: Cayuna 430 and Pterodactyl (Ron @ KFHU) 14. 08:10 AM - Re: Re: Cayuna 430 and Pterodactyl (Ron @ KFHU) 15. 08:14 AM - Re: Re: Cayuna 430 and Pterodactyl (russ kinne) 16. 08:15 AM - Re: Re: Cayuna 430 and Pterodactyl (Ron @ KFHU) 17. 09:53 AM - Re: Gentlemen, Lets all take a deep breath and relax a little.... (Richard Girard) 18. 10:20 AM - Stits (william sullivan) 19. 01:35 PM - Re: Re: Thank you (Brad Stump) 20. 01:39 PM - Re: R: VGs (Brad Stump) 21. 04:51 PM - Re: R: VGs (John Hauck) 22. 05:58 PM - Re: Re: Cayuna 430 and Pterodactyl (Dana Hague) 23. 07:51 PM - Re: Stits (Richard Girard) 24. 09:50 PM - Re: Re: Cayuna 430 and Pterodactyl (Ron @ KFHU) ________________________________ Message 1 _____________________________________ Time: 02:07:09 AM PST US From: "Carlo Tura" Subject: Kolb-List: R: VGs Hello to all, I'm finally completed the reconstruction of my Mark II. I'm Italian and I am speaking little English. I wanted to ask a question. If I put on the wings the VGs, the speed cruise increases or decreases? Thank you Charly -------------------------------- Politecnica aderisce al progetto Impatto Zero di Lifegate "Compensate le emissioni di co2 per i propri consumi di carta con la creazione di nuove foreste". http://www.impattozero.it ________________________________ Message 2 _____________________________________ Time: 03:35:47 AM PST US From: "Ted Cowan" Subject: Kolb-List: cuyunna I am going to step out in defense of the ole 202 cuyunna engine. I have had three of them and I want to tell you this: I have never had one go out on me or fail me because of something it did. It was all ME. I pushed it too hard, bad fuel, lines, squeeze bulbs, plugs, argh. I have however, had the supposed good ole rotax stop on me. I lost a crank with no sign of failure and no real reason, it just seized. One of the little bearings was square I guess and it went to lunch and took its buddies with them. I have had a lots of fan belt problems with the rotax but cooling with the 20II was no problem if you just kept it in its envelope. Never, I repeat, Never try to outclimb a rotax with a 20II cause it is not the same and wont do it. So, I guess apples and oranges. If you treat any engine correctly and stay within its tolerances, you should have good luck with them. We are our worse enemies. Ted Cowan, original firestar 447, kobra cuyunna, pterodactyl cuyunna. Slingshot 912UL. By the way, I might have a fix for the rum rum of the 912. I have to experiment on this concept and let you know. If it is it, many will appreciate it. It might not be what we all throught it might be. (hey, sounds like life, huh.) ________________________________ Message 3 _____________________________________ Time: 04:11:45 AM PST US From: "pj.ladd" Subject: Re: Kolb-List: Re: Thank you properly built Kolb with a qualified pilot doesnt need VG's>> Hi Ellery, 2 points. From the flying point of view I don`t think anyone has claimed that you NEED them. They just make things a bit easier. Second point. In the UK with an Xtra you DO NEED them because you will not be allowed to fly it as a microlight without them. With no VG`s you cannot get the stall speed low enough to fit into the formula which must be met to qualify as a legal microlight. Horses for courses? Cheers Pat ________________________________ Message 4 _____________________________________ Time: 04:20:45 AM PST US From: "pj.ladd" Subject: Re: Kolb-List: R: VGs I>> If I put on the wings the VGs, the speed cruise increases or decreases? Charly you will not notice any difference in the cruise but the stalling speed will be lower by about 5mph Pat ? ________________________________ Message 5 _____________________________________ Time: 04:37:47 AM PST US From: Dana Hague Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl Bubbling at the fuel filter: It could be an air leak, especially if you use the screw type hose clamps which don't always seal all the way around small tubes. Better to use safety wire. A bit of bubbling when the engine is first started is normal, as any air and vapor in the line works its way through. However, if there is any blockage upstream (happened to me on my first flight in the US, a bad primer bulb), the suction can cause steady stream of bubbles as the fuel boils into vapor. Re sputtering: Not clear from your description. Is it running OK at full throttle once it clears out, and do the plugs and EGT look OK? If so, it's likely it's loading up at lower throttle settings, could be the needle clip (raise the clip to lower the needle and lean out the midrange) or idle adjustment screw. The jettings listed in the Cuyuna manual (they give a chart of jet sizes according to altitude and temperature) are a good place to start. Using fuel with ethanol may shift it slightly lean, so you may need to go one jet size larger. If the crack in the prop isn't too bad, you can fix it. Spread it slightly and squirt some wood glue (yellow carpenter's glue) into it... then balance it afterwards. I've seen some amazing prop repairs in the PPG world; some of them go too far, I think, but they hold together. -Dana At 11:00 PM 6/23/2009, Ron @ KFHU wrote: >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. -- A flying saucer results when a nudist spills his coffee. ________________________________ Message 6 _____________________________________ Time: 06:02:59 AM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl I have the bulb above the fuel filter ( the bulb is brand new from Aircraft Spruce, the original was rot cracked, plugs are also brand new), and we did not install it with hose clams at all. I have already taken care of that now. I have it installed Fuel Tank, filter, bulb, pump, I also have yet to run the motor to check and see if the problem is solved. All that stuff happened yesterday. The bubbles start right at the fuel filter probably air was getting in that area, and also was another bubble stream was getting in around the bulb. I think this will be a none issue as I now have clamps there too. -Sputtering; On take off it was good all the way to mid power, but no sooner I cleared the strip it started bogging down I brought the power back and it seemed to have gone away. But every time after that when I gave it opened throttle more to get some more altitude it started bogging down again. It got to where I could not maintain altitude about half way to where I was going. I hope its just an air leak and nothing else, I am aware that I may have more than one issue here, no idea about the history of this motor, even though it is very strong when it is doing is thing at full throttle, for the few seconds that it does. I never opened a Bing carb before and don't have the manual can you tell me about the jetting in a bit more detail. Density Altitude around here is around 7-8K this time of year. If I screw the idle in is that more gas or less? Can't tell by moving it sounds the same no matter what I do. I got it pretty far screwed in right now. ---- Dana Hague wrote: ============ Bubbling at the fuel filter: It could be an air leak, especially if you use the screw type hose clamps which don't always seal all the way around small tubes. Better to use safety wire. A bit of bubbling when the engine is first started is normal, as any air and vapor in the line works its way through. However, if there is any blockage upstream (happened to me on my first flight in the US, a bad primer bulb), the suction can cause steady stream of bubbles as the fuel boils into vapor. Re sputtering: Not clear from your description. Is it running OK at full throttle once it clears out, and do the plugs and EGT look OK? If so, it's likely it's loading up at lower throttle settings, could be the needle clip (raise the clip to lower the needle and lean out the midrange) or idle adjustment screw. The jettings listed in the Cuyuna manual (they give a chart of jet sizes according to altitude and temperature) are a good place to start. Using fuel with ethanol may shift it slightly lean, so you may need to go one jet size larger. If the crack in the prop isn't too bad, you can fix it. Spread it slightly and squirt some wood glue (yellow carpenter's glue) into it... then balance it afterwards. I've seen some amazing prop repairs in the PPG world; some of them go too far, I think, but they hold together. -Dana At 11:00 PM 6/23/2009, Ron @ KFHU wrote: >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. -- A flying saucer results when a nudist spills his coffee. -- kugelair.com ________________________________ Message 7 _____________________________________ Time: 06:35:22 AM PST US From: TheWanderingWench Subject: Re: Kolb-List: Gentlemen, Lets all take a deep breath and relax a little.... Nick - You put a "Do Not Archive" on this post - yet I think it SHOULD be archived , so we can search it out and re-post it when the air gets heated on-line. =C2- One thing (among many) that I have always appreciated about John H's posts is that he makes it very clear that he is not giving advice, not saying "do as I do" - just saying, "this is my experience and my preference." =C2- It's astounding to me how much heat is generated when pilots do things diff erently. Your post is a wonderful summation of why we should continue to le arn from each other - and from all our differences. Arty TrostMaxair DrifterSandy, Oregon www.LessonsFromTheEdge.com/uladventure2009.htm =0A =0A"Life's a daring adventure or nothing" =0A Helen Keller =0A =0A"I refuse to tip toe through life just to arrive safely at death." --- On Tue, 6/23/09, Nick Cassara wrote: From: Nick Cassara Subject: Kolb-List: Gentlemen, Lets all take a deep breath and relax a litt le.... =0A=0A=0A =0A =0A=0A=0A=0A=0A=0A=0A =0A=0A=0A=0AGentlemen, Lets all take a deep breath and relax a=0Alittle....ladies your doing fine! =0A=0A =C2- =0A=0ASince I do not have a single hour in a Kolb of any type,=0Aplease all ow me to share an insight with you all. I have learned a lot about=0AKolb =99s from this on line =9Cfamily=9D of sorts. I am gratef ul to=0Ayou all. =0A=0A =C2- =0A=0ALike all families you do not all agree on everything, and=0Asometimes on nothing! You all fly similar, but differ ent planes. You all fly in=0Avery different places. You all have different amounts of time in your Kolb, and=0Aother aircraft, so all of your judgment s are shaped by your experiences, which=0Aare all different. =0A=0A =C2- =0A=0AIf I was John H probably would not have VG=99s on my=0Aplane. If I had the hour in my plane that John does there would not be a whole=0Al ot of point to having VG=99s . =0A=0A =C2- =0A=0AIf I ever get this pile of parts to look like an airplane, I=0Awill have VG=99s. Thirty years from now I might have as much time in the=0Aair as John, but I doubt it. I then would probable recommend VG to everyone=0Abecause that is what I would know. =0A=0A =C2- =0A=0AI am flown, at work, by a group of high time Alaskan Super Cub=0Apilots some with VG=99s and some without. No two cubs are the same, BUT=0Athey all perform beautifully in the hands of their pilots. =0A=0A =C2- =0A=0ASo the long and the short of this dribble is that none of=0Ayou are right, and none of you are wrong!!!!!!! You all just see the world=0Athrough the filter of your experience! =0A=0A =C2- =0A=0APlease Keep teachingI have a lot more to learn for=0Ayou all ! =0A=0A =C2- =0A=0ASincerely, =0A=0A =C2- =0A=0ANick Cassara =0A=0A =C2- =0A=0APalmer, Alaska =0A=0A =C2- =0A=0AProto type Kolbra waiting t o be finished! =0A=0A =C2- =0A=0ADo not archive =0A=0A=C2-=C2- =0A=0A ========================0A=0A ________________________________ Message 8 _____________________________________ Time: 06:40:03 AM PST US From: "John Hauck" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl > -Sputtering; On take off it was good all the way to mid power, but no sooner I cleared the strip it started bogging down I brought the power back and it seemed to have gone away. But every time after that when I gave it opened throttle more to get some more altitude it started bogging down again. It got to where I could not maintain altitude about half way to where I was going. I hope its just an air leak and nothing else, I am aware that I may have more than one issue here, no idea about the history of this motor, even though it is very strong when it is doing is thing at full throttle, for the few seconds that it does. Captain Ron: Most folks do their engine testing on the ground, until they are satisfied the engine will perform normally once airborne. If I have an engine problem, I tie the airplane to my trailer hitch with a secure tow strap. A lot safer, saves a lot of time, airplanes and people doing it this way. john h mkIII ________________________________ Message 9 _____________________________________ Time: 06:42:19 AM PST US From: robert bean Subject: Re: Kolb-List: Gentlemen, Lets all take a deep breath and relax a little.... Men get grumpier and more opinionated as they get older. -You would think it would be the reverse :) BB On 24, Jun 2009, at 9:34 AM, TheWanderingWench wrote: > Nick - > > You put a "Do Not Archive" on this post - yet I think it SHOULD be > archived, so we can search it out and re-post it when the air gets > heated on-line. > > One thing (among many) that I have always appreciated about John > H's posts is that he makes it very clear that he is not giving > advice, not saying "do as I do" - just saying, "this is my > experience and my preference." > > It's astounding to me how much heat is generated when pilots do > things differently. Your post is a wonderful summation of why we > should continue to learn from each other - and from all our > differences. > > Arty Trost > Maxair Drifter > Sandy, Oregon > > www.LessonsFromTheEdge.com/uladventure2009.htm > > "Life's a daring adventure or nothing" > Helen Keller > > "I refuse to tip toe through life just to arrive safely at death." > > --- On Tue, 6/23/09, Nick Cassara wrote: > > From: Nick Cassara > Subject: Kolb-List: Gentlemen, Lets all take a deep breath and > relax a little.... > To: kolb-list@matronics.com > Date: Tuesday, June 23, 2009, 11:07 PM > > 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=92s from this on line =93family=94 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=92s 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=92s . > > > If I ever get this pile of parts to look like an airplane, I will > have VG=92s. 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=92s 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=85I have a lot more to learn for you all! > > > Sincerely, > > > Nick Cassara > > > Palmer, Alaska > > > Proto type Kolbra waiting to be finished! > > > Do not archive > > > http://www.matronics.com/Navigator?Kolb-ofollow" target="_blank" > href="http://www.matronics.com/contribution">h > > ________________________________ Message 10 ____________________________________ Time: 06:54:25 AM PST US From: williamtsullivan@att.net Subject: Kolb-List: Re: Cayuna 430 and Pterodactyl - Ron- It sounds like your carb is doing the same as my Bing 54 on the Ro tax 447.- Bogging down in mid range; seems Ok at full; and air screw does not seem to be doing anything.- Take the carb bowl off carefully, and lo ok in the gas and bottom of the bowl.- Maybe pour the gas out through a p aper towel.- Look carefully in the bowl, and clean with a Q-tip.- The m ain jet is located directly under the needle that you can see while looking in through the air intake.- If you take off the filter, the gas goes up thropugh the main jet.- It comes out easily for cleaning or replacement. - I had congealed goo in mine, probably from sitting.- Also, mine had a worn out choke seal, and more goo.- The seal plunger had to be replaced. - I got the seal plunger and a carb kit from Lockwood.- The diagram is in their book.- - I found very clear instructions on the web from the "Ultralight news". - Call up "Bing 54 adjustments" on web search.- Also, Scott Olendorf ha s a couple of tricks on his website.- No special tools required, but a to rch tip cleaner came in handy to poke the goo out. - John Hauck is right about tieing it down.- I was running around tryin g to test for the bogging, and look what happened to me.- Just don't walk into the fan. - ------------------------- ------------------- Bill Sullivan ------------------------- ------------------- Windsor Locks, Ct .. ------------------------- ------------------- FS 447 ________________________________ Message 11 ____________________________________ Time: 07:03:25 AM PST US From: Blumax008@aol.com Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl In a message dated 6/24/2009 9:40:40 A.M. Eastern Daylight Time, jhauck@elmore.rr.com writes: If I have an engine problem, I tie the airplane to my trailer hitch with a secure tow strap. A lot safer, saves a lot of time, airplanes and people doing it this way. Yes, always but ALWAYS secure the aircraft before starting. Mr. Know-It-All here (me) once started a 582 Maxair with the throttle accidentally WIDE-ASS-OPEN....with NO securing strap. I was standing outside the aircraft while hand propping. You will not believe the power of a 582 at full throttle. I had enough time to grab the horizontal stabilizer & hang on...and that's all I was allowed to do...hang on! It whipped me around & around about 3 times in a circle, dragging my 190 pound butt around like a rag doll or a piece of paper! I actually thought I could stop it in place! Haaaaaaa! What an idiot! I got my wits together on the 2nd. trip around (I was younger then) & while being whipped around, got it aimed at a big bunch of bushes alongside the runway. I managed to let go at the proper time. It actually took off on it's own & flew itself into the bushes where it (Thank God) managed to bury itself...and still ran wide-ass-open untill I could get to it! Amazingly, no damage but did mow some bushes with the nickel leading edge Warp Drive bushmower propellar. No damage to the Warp either! Always but always secure your aircraft for any runups. Sitting in the aircraft & cranking by battery while also tied to a friggin' TREE is the best idea for runups. Bill (wide-ass-open) Catalina **************Check all of your email inboxes from anywhere on the web. Try the new Email Toolbar now! (http://toolbar.aol.com/mail/download.html?ncid=txtlnkusdown00000027) ________________________________ Message 12 ____________________________________ Time: 07:39:49 AM PST US From: "Denny Rowe" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl Ron, Please put the filter after the bulb, any loose rubber from the bulb will than be filtered out instead of going into the carb and becoming an obstruction to your main jet. I had this happen to me on my 503 powered Loehle SP years ago and it was a close call. Little tiny peice of black rubber bobbing around in the float bowel. Sounds like you better pull your bowel and check real close for this. Dennis Rowe ----- Original Message ----- From: "Ron @ KFHU" Sent: Wednesday, June 24, 2009 9:02 AM Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl > > I have the bulb above the fuel filter ( the bulb is brand new from > Aircraft Spruce, the original was rot cracked, plugs are also brand new), > and we did not install it with hose clams at all. I have already taken > care of that now. I have it installed Fuel Tank, filter, bulb, pump, I > also have yet to run the motor to check and see if the problem is solved. > All that stuff happened yesterday. The bubbles start right at the fuel > filter probably air was getting in that area, and also was another bubble > stream was getting in around the bulb. I think this will be a none issue > as I now have clamps there too. > -Sputtering; On take off it was good all the way to mid power, but no > sooner I cleared the strip it started bogging down I brought the power > back and it seemed to have gone away. But every time after that when I > gave it opened throttle more to get some more altitude it started bogging > down again. It got to where I could not maintain altitude about half way > to where I was going. I hope its just an air leak and nothing else, I am > aware that I may have more than one issue here, no idea about the history > of this motor, even though it is very strong when it is doing is thing at > full throttle, for the few seconds that it does. > I never opened a Bing carb before and don't have the manual can you tell > me about the jetting in a bit more detail. Density Altitude around here is > around 7-8K this time of year. > If I screw the idle in is that more gas or less? Can't tell by moving it > sounds the same no matter what I do. I got it pretty far screwed in right > now. > > > ---- Dana Hague wrote: > > ============ > > Bubbling at the fuel filter: It could be an air leak, especially if you > use the screw type hose clamps which don't always seal all the way around > small tubes. Better to use safety wire. A bit of bubbling when the > engine > is first started is normal, as any air and vapor in the line works its way > through. However, if there is any blockage upstream (happened to me on my > first flight in the US, a bad primer bulb), the suction can cause steady > stream of bubbles as the fuel boils into vapor. > > Re sputtering: Not clear from your description. Is it running OK at full > throttle once it clears out, and do the plugs and EGT look OK? If so, > it's > likely it's loading up at lower throttle settings, could be the needle > clip > (raise the clip to lower the needle and lean out the midrange) or idle > adjustment screw. The jettings listed in the Cuyuna manual (they give a > chart of jet sizes according to altitude and temperature) are a good place > to start. Using fuel with ethanol may shift it slightly lean, so you may > need to go one jet size larger. > > If the crack in the prop isn't too bad, you can fix it. Spread it > slightly > and squirt some wood glue (yellow carpenter's glue) into it... then > balance > it afterwards. I've seen some amazing prop repairs in the PPG world; some > of them go too far, I think, but they hold together. > > -Dana > > > At 11:00 PM 6/23/2009, Ron @ KFHU wrote: > >>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. > > -- > A flying saucer results when a nudist spills his coffee. > > > -- > kugelair.com > > -------------------------------------------------------------------------------- Checked by AVG - www.avg.com 06:23:00 ________________________________ Message 13 ____________________________________ Time: 08:06:26 AM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl :-) Thanks John, at this point I could not agree with you more. Now off to *my* hanger where I have all my tools, and set up, to maybe get this contraption flight ready for 5-am tomorrow! Ron @ KFHU ======================= ---- John Hauck wrote: ============ > -Sputtering; On take off it was good all the way to mid power, but no sooner I cleared the strip it started bogging down I brought the power back and it seemed to have gone away. But every time after that when I gave it opened throttle more to get some more altitude it started bogging down again. It got to where I could not maintain altitude about half way to where I was going. I hope its just an air leak and nothing else, I am aware that I may have more than one issue here, no idea about the history of this motor, even though it is very strong when it is doing is thing at full throttle, for the few seconds that it does. Captain Ron: Most folks do their engine testing on the ground, until they are satisfied the engine will perform normally once airborne. If I have an engine problem, I tie the airplane to my trailer hitch with a secure tow strap. A lot safer, saves a lot of time, airplanes and people doing it this way. john h mkIII -- kugelair.com ________________________________ Message 14 ____________________________________ Time: 08:10:47 AM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl Thank you much! I printed it out and will take with me, to work on the Carb. Ron @ KFHU ======== ---- williamtsullivan@att.net wrote: ============ Ron- It sounds like your carb is doing the same as my Bing 54 on the Rotax 447. Bogging down in mid range; seems Ok at full; and air screw does not seem to be doing anything. Take the carb bowl off carefully, and look in the gas and bottom of the bowl. Maybe pour the gas out through a paper towel. Look carefully in the bowl, and clean with a Q-tip. The main jet is located directly under the needle that you can see while looking in through the air intake. If you take off the filter, the gas goes up thropugh the main jet. It comes out easily for cleaning or replacement. I had congealed goo in mine, probably from sitting. Also, mine had a worn out choke seal, and more goo. The seal plunger had to be replaced. I got the seal plunger and a carb kit from Lockwood. The diagram is in their book. I found very clear instructions on the web from the "Ultralight news". Call up "Bing 54 adjustments" on web search. Also, Scott Olendorf has a couple of tricks on his website. No special tools required, but a torch tip cleaner came in handy to poke the goo out. John Hauck is right about tieing it down. I was running around trying to test for the bogging, and look what happened to me. Just don't walk into the fan. Bill Sullivan Windsor Locks, Ct. FS 447 -- kugelair.com ________________________________ Message 15 ____________________________________ Time: 08:14:03 AM PST US From: russ kinne Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl pull your bowel? pls do not archive On Jun 24, 2009, at 10:37 AM, Denny Rowe wrote: > > > Ron, > Please put the filter after the bulb, any loose rubber from the > bulb will than be filtered out instead of going into the carb and > becoming an obstruction to your main jet. > I had this happen to me on my 503 powered Loehle SP years ago and > it was a close call. Little tiny peice of black rubber bobbing > around in the float bowel. Sounds like you better pull your bowel > and check real close for this. > > Dennis Rowe > ----- Original Message ----- From: "Ron @ KFHU" > To: > Sent: Wednesday, June 24, 2009 9:02 AM > Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl > > >> >> I have the bulb above the fuel filter ( the bulb is brand new >> from Aircraft Spruce, the original was rot cracked, plugs are also >> brand new), and we did not install it with hose clams at all. I >> have already taken care of that now. I have it installed Fuel >> Tank, filter, bulb, pump, I also have yet to run the motor to >> check and see if the problem is solved. All that stuff happened >> yesterday. The bubbles start right at the fuel filter probably >> air was getting in that area, and also was another bubble stream >> was getting in around the bulb. I think this will be a none issue >> as I now have clamps there too. >> -Sputtering; On take off it was good all the way to mid power, but >> no sooner I cleared the strip it started bogging down I brought >> the power back and it seemed to have gone away. But every time >> after that when I gave it opened throttle more to get some more >> altitude it started bogging down again. It got to where I could >> not maintain altitude about half way to where I was going. I hope >> its just an air leak and nothing else, I am aware that I may have >> more than one issue here, no idea about the history of this motor, >> even though it is very strong when it is doing is thing at full >> throttle, for the few seconds that it does. >> I never opened a Bing carb before and don't have the manual can >> you tell me about the jetting in a bit more detail. Density >> Altitude around here is around 7-8K this time of year. >> If I screw the idle in is that more gas or less? Can't tell by >> moving it sounds the same no matter what I do. I got it pretty far >> screwed in right now. >> >> >> >> >> >> >> ---- Dana Hague wrote: >> >> ============ >> >> Bubbling at the fuel filter: It could be an air leak, especially >> if you >> use the screw type hose clamps which don't always seal all the way >> around >> small tubes. Better to use safety wire. A bit of bubbling when >> the engine >> is first started is normal, as any air and vapor in the line works >> its way >> through. However, if there is any blockage upstream (happened to >> me on my >> first flight in the US, a bad primer bulb), the suction can cause >> steady >> stream of bubbles as the fuel boils into vapor. >> >> Re sputtering: Not clear from your description. Is it running OK >> at full >> throttle once it clears out, and do the plugs and EGT look OK? If >> so, it's >> likely it's loading up at lower throttle settings, could be the >> needle clip >> (raise the clip to lower the needle and lean out the midrange) or >> idle >> adjustment screw. The jettings listed in the Cuyuna manual (they >> give a >> chart of jet sizes according to altitude and temperature) are a >> good place >> to start. Using fuel with ethanol may shift it slightly lean, so >> you may >> need to go one jet size larger. >> >> If the crack in the prop isn't too bad, you can fix it. Spread it >> slightly >> and squirt some wood glue (yellow carpenter's glue) into it... >> then balance >> it afterwards. I've seen some amazing prop repairs in the PPG >> world; some >> of them go too far, I think, but they hold together. >> >> -Dana >> >> >> At 11:00 PM 6/23/2009, Ron @ KFHU wrote: >> >>> 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. >> >> -- >> A flying saucer results when a nudist spills his coffee. >> >> >> >> >> >> >> -- >> kugelair.com >> >> >> >> > > > ---------------------------------------------------------------------- > ---------- > > > Checked by AVG - www.avg.com > 06:23:00 > > ________________________________ Message 16 ____________________________________ Time: 08:15:51 AM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl Thank you You guys are a treasure here! Ron @ KFHU ============= ---- Denny Rowe wrote: ============ Ron, Please put the filter after the bulb, any loose rubber from the bulb will than be filtered out instead of going into the carb and becoming an obstruction to your main jet. I had this happen to me on my 503 powered Loehle SP years ago and it was a close call. Little tiny peice of black rubber bobbing around in the float bowel. Sounds like you better pull your bowel and check real close for this. Dennis Rowe ----- Original Message ----- From: "Ron @ KFHU" Sent: Wednesday, June 24, 2009 9:02 AM Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl > > I have the bulb above the fuel filter ( the bulb is brand new from > Aircraft Spruce, the original was rot cracked, plugs are also brand new), > and we did not install it with hose clams at all. I have already taken > care of that now. I have it installed Fuel Tank, filter, bulb, pump, I > also have yet to run the motor to check and see if the problem is solved. > All that stuff happened yesterday. The bubbles start right at the fuel > filter probably air was getting in that area, and also was another bubble > stream was getting in around the bulb. I think this will be a none issue > as I now have clamps there too. > -Sputtering; On take off it was good all the way to mid power, but no > sooner I cleared the strip it started bogging down I brought the power > back and it seemed to have gone away. But every time after that when I > gave it opened throttle more to get some more altitude it started bogging > down again. It got to where I could not maintain altitude about half way > to where I was going. I hope its just an air leak and nothing else, I am > aware that I may have more than one issue here, no idea about the history > of this motor, even though it is very strong when it is doing is thing at > full throttle, for the few seconds that it does. > I never opened a Bing carb before and don't have the manual can you tell > me about the jetting in a bit more detail. Density Altitude around here is > around 7-8K this time of year. > If I screw the idle in is that more gas or less? Can't tell by moving it > sounds the same no matter what I do. I got it pretty far screwed in right > now. > > > ---- Dana Hague wrote: > > ============ > > Bubbling at the fuel filter: It could be an air leak, especially if you > use the screw type hose clamps which don't always seal all the way around > small tubes. Better to use safety wire. A bit of bubbling when the > engine > is first started is normal, as any air and vapor in the line works its way > through. However, if there is any blockage upstream (happened to me on my > first flight in the US, a bad primer bulb), the suction can cause steady > stream of bubbles as the fuel boils into vapor. > > Re sputtering: Not clear from your description. Is it running OK at full > throttle once it clears out, and do the plugs and EGT look OK? If so, > it's > likely it's loading up at lower throttle settings, could be the needle > clip > (raise the clip to lower the needle and lean out the midrange) or idle > adjustment screw. The jettings listed in the Cuyuna manual (they give a > chart of jet sizes according to altitude and temperature) are a good place > to start. Using fuel with ethanol may shift it slightly lean, so you may > need to go one jet size larger. > > If the crack in the prop isn't too bad, you can fix it. Spread it > slightly > and squirt some wood glue (yellow carpenter's glue) into it... then > balance > it afterwards. I've seen some amazing prop repairs in the PPG world; some > of them go too far, I think, but they hold together. > > -Dana > > > At 11:00 PM 6/23/2009, Ron @ KFHU wrote: > >>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. > > -- > A flying saucer results when a nudist spills his coffee. > > > -- > kugelair.com > > -------------------------------------------------------------------------------- Checked by AVG - www.avg.com 06:23:00 -- kugelair.com ________________________________ Message 17 ____________________________________ Time: 09:53:28 AM PST US Subject: Re: Kolb-List: Gentlemen, Lets all take a deep breath and relax a little.... From: Richard Girard My friend Jeff Bowman explained it best, When we talk to the non aviators, it is "We are the sky Gods", when we talk to each other it's "I am the sky God". 30 years on, it's still true, 30 more, it still will be. Rick do not archive On Wed, Jun 24, 2009 at 8:42 AM, robert bean wrote: > Men get grumpier and more opinionated as they get older. -You would thin kit > would be the reverse :) > BB > > On 24, Jun 2009, at 9:34 AM, TheWanderingWench wrote: > > Nick - > You put a "Do Not Archive" on this post - yet I think it SHOULD be > archived, so we can search it out and re-post it when the air gets heated > on-line. > > One thing (among many) that I have always appreciated about John H's post s > is that he makes it very clear that he is not giving advice, not saying " do > as I do" - just saying, "this is my experience and my preference." > > It's astounding to me how much heat is generated when pilots do things > differently. Your post is a wonderful summation of why we should continue to > learn from each other - and from all our differences. > > Arty Trost > Maxair Drifter > Sandy, Oregon > > www.LessonsFromTheEdge.com/uladventure2009.htm > > "Life's a daring adventure or nothing" > Helen Keller > > "I refuse to tip toe through life just to arrive safely at death." > > --- On *Tue, 6/23/09, Nick Cassara * wrote: > > > From: Nick Cassara > Subject: Kolb-List: Gentlemen, Lets all take a deep breath and relax a > little.... > To: kolb-list@matronics.com > Date: Tuesday, June 23, 2009, 11:07 PM > > 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=92s from t his > on line =93family=94 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, an d > 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=92s on my plane. If I had the hour > in my plane that John does there would not be a whole lot of point to hav ing > VG=92s . > > > If I ever get this pile of parts to look like an airplane, I will have > VG=92s. Thirty years from now I might have as much time in the air as Joh n, > but I doubt it. I then would probable recommend VG to everyone because th at > is what I would know. > > > I am flown, at work, by a group of high time Alaskan Super Cub pilots som e > with VG=92s and some without. No two cubs are the same, BUT they all perf orm > 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=85I have a lot more to learn for you all! > > > Sincerely, > > > Nick Cassara > > > Palmer, Alaska > > > Proto type Kolbra waiting to be finished! > > > Do not archive > > > *http://www.matronics.com/Navigator?Kolb-ofollow" target="_blank" href ="http://www.matronics.com/contribution">h > * > > *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 > * > > > * > =========== ronics.com/Navigator?Kolb-List =========== =========== com/contribution =========== > * > > ________________________________ Message 18 ____________________________________ Time: 10:20:39 AM PST US From: william sullivan Subject: Kolb-List: Stits - Rich Girard- How is the covering project going? - ------------------------- ----------------------- Bill Sullivan ------------------------- ----------------------- Winds or Locks, Ct. ------------------------- ----------------------- FS 44 7 do not archive ________________________________ Message 19 ____________________________________ Time: 01:35:55 PM PST US From: Brad Stump Subject: Re: Kolb-List: Re: Thank you Don't want to cause any undue heart-ache,but,I installed landshorter vg on my mk3 and love them. > -----Original Message----- > From: possums@bellsouth.net > Sent: Tue, 23 Jun 2009 23:20:50 -0400 > To: kolb-list@matronics.com > 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 > > ____________________________________________________________ FREE 3D EARTH SCREENSAVER - Watch the Earth right on your desktop! Check it out at http://www.inbox.com/earth ________________________________ Message 20 ____________________________________ Time: 01:39:54 PM PST US From: Brad Stump Subject: Re: Kolb-List: R: VGs My stall speed lowered by 10 mph. > -----Original Message----- > From: pj.ladd@btinternet.com > Sent: Wed, 24 Jun 2009 12:14:47 +0100 > To: kolb-list@matronics.com > Subject: Re: Kolb-List: R: VGs > > > I>> > > If I put on the wings the VGs, the speed cruise increases or decreases? > > Charly > you will not notice any difference in the cruise but the stalling speed > will > be lower by about 5mph > > Pat > ? > > ____________________________________________________________ GET FREE 5GB EMAIL - Check out spam free email with many cool features! Visit http://www.inbox.com/email to find out more! ________________________________ Message 21 ____________________________________ Time: 04:51:11 PM PST US From: "John Hauck" Subject: Re: Kolb-List: R: VGs Subject: Re: Kolb-List: R: VGs > > My stall speed lowered by 10 mph. Brad S: That is an impressive improvement. What was your stall speed prior to, and after installation of VGs? At what altitude did you conduct your tests? What were the differences in stall characteristics prior to and after installation of VGs? How did the VGs affect speed at your normal cruise power setting? Did you test stall in ground effect, before and after? What airplane are you flying? Would you please expand on your experience flying this airplane before and after? If I could get a 10 mph reduction in stall speed in ground effect, I could land at 20 mph. john h mkIII - Always impressed with the dramatic improvements in aircraft performance and handling after installation of VGs. ________________________________ Message 22 ____________________________________ Time: 05:58:52 PM PST US From: Dana Hague Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl At 09:02 AM 6/24/2009, Ron @ KFHU wrote: >I have the bulb above the fuel filter ( the bulb is brand new from >Aircraft Spruce, the original was rot cracked, plugs are also brand new)... Same here... my original bulb was dry and hard; I replaced it with a brand new bulb from Aircraft Spruce. The brand new bulb was bad (clogged) out of the box. It would pass enough fuel for warmup and mid power, and let the carb bowl fill, but at full power the it couldn't keep up and the engine would starve for fuel shortly after takeoff. I discovered this the hard way on my first flight in the plane; fortunately it would make enough power to get around the pattern and land. I now have a plunger primer and no squeeze bulb. > ...and we did not install it with hose clams at all. I have already > taken care of that now. I have it installed Fuel Tank, filter, bulb, > pump, I also have yet to run the motor to check and see if the problem is > solved. All that stuff happened yesterday. The bubbles start right at the > fuel filter probably air was getting in that area, and also was another > bubble stream was getting in around the bulb. I think this will be a none > issue as I now have clamps there too. The point I was making is that the clamps can CAUSE an air leak, since they don't do a very good job of clamping all the way around small hoses. Safety wire (wrap around the hose three times, then twist) does a better job and is lighter as well. I would look for a blockage upstream of the first place you see the bubbles. Places to look are the pickup inside the tank, and any fittings. Do you have and EGT and/or CHT gauges on the engine? If so, what do they say? If not, you should. >-Sputtering; On take off it was good all the way to mid power, but no >sooner I cleared the strip it started bogging down I brought the power >back and it seemed to have gone away. But every time after that when I >gave it opened throttle more to get some more altitude it started bogging >down again. Sounds like my experience, except that the rpm's were surging up and down. >I never opened a Bing carb before and don't have the manual can you tell >me about the jetting in a bit more detail. Density Altitude around here is >around 7-8K this time of year. You have a Bing? The Cuyunas originally came with a Mikuni which is a much better carburetor for these engines. I'm told that lots of people have trouble getting the engine to run correctly with the Bing. The Cuyuna manual (as well as the Mikuni manual) can be downloaded from the files section of the Cuyuna Yahoo group (I put them there): You might get some more useful advice there, too, though it's not a very active group. -Dana -- To Be Old And Wise You Must First Be Young And Stupid ________________________________ Message 23 ____________________________________ Time: 07:51:20 PM PST US Subject: Re: Kolb-List: Stits From: Richard Girard Tackling the corrosion first. Remove rivet(s) sand, etch, alodine, prime, reattach, repeat. When all joints are etched and alodined I'll do the large parts of the structure, and then use 420 epoxy primer to seal everything. Rick On Wed, Jun 24, 2009 at 12:17 PM, william sullivan wrote: > Rich Girard- How is the covering project going? > > Bill Sullivan > Windsor Locks, Ct. > FS 447 > do not archive > > * > > * > > ________________________________ Message 24 ____________________________________ Time: 09:50:04 PM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: Re: Cayuna 430 and Pterodactyl Well i think I found out one problem, and it had to do with the bulb. It seemed that the Handy dude at the ranch who forced it into the tube cracked the intake into the bulb. When I repositioned the bulb and tried to insert it into its new position the prong just broke off easily. Re-did the entire fuel line, found out that I had a bulb that Kolb sent me back when I bought the kit. My buddy who is a good mechanic came and took a look at it. We had the Carb apart ( I said Bing,, its a Mikuni written right on it) he new it inside and out cleaned some air input and the needle closed it up. And tomorrow we shall see if I can get a solid hour out of it. Patched up the prop, new prop will be in tomorrow too late for the AM flight. Other than that will see what happens. Ron @ KFHU =============================== ---- Dana Hague wrote: ============ At 09:02 AM 6/24/2009, Ron @ KFHU wrote: >I have the bulb above the fuel filter ( the bulb is brand new from >Aircraft Spruce, the original was rot cracked, plugs are also brand new)... Same here... my original bulb was dry and hard; I replaced it with a brand new bulb from Aircraft Spruce. The brand new bulb was bad (clogged) out of the box. It would pass enough fuel for warmup and mid power, and let the carb bowl fill, but at full power the it couldn't keep up and the engine would starve for fuel shortly after takeoff. I discovered this the hard way on my first flight in the plane; fortunately it would make enough power to get around the pattern and land. I now have a plunger primer and no squeeze bulb. > ...and we did not install it with hose clams at all. I have already > taken care of that now. I have it installed Fuel Tank, filter, bulb, > pump, I also have yet to run the motor to check and see if the problem is > solved. All that stuff happened yesterday. The bubbles start right at the > fuel filter probably air was getting in that area, and also was another > bubble stream was getting in around the bulb. I think this will be a none > issue as I now have clamps there too. The point I was making is that the clamps can CAUSE an air leak, since they don't do a very good job of clamping all the way around small hoses. Safety wire (wrap around the hose three times, then twist) does a better job and is lighter as well. I would look for a blockage upstream of the first place you see the bubbles. Places to look are the pickup inside the tank, and any fittings. Do you have and EGT and/or CHT gauges on the engine? If so, what do they say? If not, you should. >-Sputtering; On take off it was good all the way to mid power, but no >sooner I cleared the strip it started bogging down I brought the power >back and it seemed to have gone away. But every time after that when I >gave it opened throttle more to get some more altitude it started bogging >down again. Sounds like my experience, except that the rpm's were surging up and down. >I never opened a Bing carb before and don't have the manual can you tell >me about the jetting in a bit more detail. Density Altitude around here is >around 7-8K this time of year. You have a Bing? The Cuyunas originally came with a Mikuni which is a much better carburetor for these engines. I'm told that lots of people have trouble getting the engine to run correctly with the Bing. The Cuyuna manual (as well as the Mikuni manual) can be downloaded from the files section of the Cuyuna Yahoo group (I put them there): You might get some more useful advice there, too, though it's not a very active group. -Dana -- To Be Old And Wise You Must First Be Young And Stupid -- kugelair.com ------------------------------------------------------------------------------------- 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.