---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Thu 05/24/12: 26 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:18 AM - Re: engine woes (Ron @ KFHU) 2. 03:55 AM - Re: engine woes (Dana Hague) 3. 04:32 AM - Re: engine woes (william sullivan) 4. 05:18 AM - Re: engine woes (Dana Hague) 5. 05:26 AM - Re: engine woes (b young) 6. 05:33 AM - Re: engine woes (william sullivan) 7. 05:47 AM - Re: engine woes (John Hauck) 8. 05:59 AM - Re: engine woes (Richard Pike) 9. 05:59 AM - Re: engine woes (Michael Welch) 10. 06:57 AM - Re: Re: engine woes (John Hauck) 11. 02:14 PM - Cheap covering job (1planeguy) 12. 02:33 PM - Re: Cheap covering job (Michael Welch) 13. 02:33 PM - Re: Cheap covering job (kinne russ) 14. 03:16 PM - MKIII accident back in March (Jason Omelchuck) 15. 03:25 PM - Re: MKIII accident back in March (Herb Gayheart) 16. 03:25 PM - Re: Cheap covering job (Richard Girard) 17. 04:37 PM - twinstar MK II (Lee Morgan) 18. 05:04 PM - Re: Cheap covering job (Dana Hague) 19. 05:34 PM - Re: MKIII accident back in March (Dana Hague) 20. 05:48 PM - Re: MKIII accident back in March (John Hauck) 21. 05:50 PM - Re: MKIII accident back in March (kinne russ) 22. 05:53 PM - Test Flight (John Hauck) 23. 06:04 PM - Re: MKIII accident back in March (Dana Hague) 24. 06:05 PM - Re: engine woes (Dana Hague) 25. 07:53 PM - Re: Latex Paint Forum (gliderx5@comcast.net) 26. 09:29 PM - Re: engine woes (Ron @ KFHU) ________________________________ Message 1 _____________________________________ Time: 02:18:18 AM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: engine woes I had a similar problem that in fact forced me down, it was an air leak from a crack in the primer bulb. Ron @ KFFL =============================================== ---- Dana Hague wrote: ============ My engine is not running quite "right". It's a Cuyuna ULII-02 on my UltraStar. Always ran great (though at the end of last season I had to replace the rear crankshaft seal which was leaking, and it again ran great after that). Last week, after flying to another airport and filling up there (with avgas), on the flight home it started behaving like it was running rich, wouldn't hold cruise rpm without sagging so I was constantly jockeying the throttle. Today, I couldn't get the proper 6500 rpm static, more like 6100, and after some extended low throttle running it wouldn't accelerate to full throttle, just wanted to quit. That's happened before if set to rich and dropping the needle one notch fixed that, but the WOT rpm is still low. EGT is also lower than it should be I dropped a jet size (one size smaller than it should be for the current air temperature) and it's a _bit_ better but still not right. Fuel consumption also seems to be up but I haven't quantified it. Avgas does tend to run a bit richer than ethanol contaminated autogas but now the tank is half avgas and half autogas and it's still running crappy. I tried running without the air filter, no change. Spark plugs look OK. I might suspect the float level but how would that change? Float needle was replaced last year with a viton needle, shouldn't be bad yet. Any ideas? -Dana -- Ron @ KFHU ________________________________ Message 2 _____________________________________ Time: 03:55:04 AM PST US From: Dana Hague Subject: Re: Kolb-List: engine woes At 05:17 AM 5/24/2012, Ron @ KFHU wrote: > >I had a similar problem that in fact forced me down, it was an air leak >from a crack in the primer bulb. But an air leak would cause a lean condition... all my symptoms point to rich running. -Dana -- There is always a law against doing anything interesting. ________________________________ Message 3 _____________________________________ Time: 04:32:23 AM PST US From: william sullivan Subject: Re: Kolb-List: engine woes - Dana- This might be a really dumb question, but does your gas smell lik e gas?- My 447 started OK, but no full RPM.- I am checking carb setting s, and for crud, before going further.- But, using the same gas, I have a Husky brush saw giving me trouble.- This is new gas, too.- It doesn't smell right, so maybe a bad load?- Too much ethanol?- Both of us got ga s through the New Haven terminal.- Might not affect a car, with computers adjusting things.- Something to think about.- KISS.- My truck seems to be sucking a lot of gas, too. ------------------------- ----------------- Bill Sullivan ------------------------- --------------- - --- On Thu, 5/24/12, Dana Hague wrote: From: Dana Hague Subject: Re: Kolb-List: engine woes =0AAt 05:17 AM 5/24/2012, Ron- @- KFHU wrote: et> =0AI had a similar problem that in fact forced me down, it was an air leak =0Afrom a crack in the primer bulb. =0ABut an air leak would cause a lean condition... all my symptoms point to =0Arich running. =0A-Dana =0A--=0AThere is always a law against doing anything=0Ainteresting.-- ======================0A=0A ________________________________ Message 4 _____________________________________ Time: 05:18:55 AM PST US From: Dana Hague Subject: Re: Kolb-List: engine woes I doubt it... the trouble seemed to start after filling up with avgas (which has pretty good quality control and no ethanol) at Simsbury. -Dana At 07:31 AM 5/24/2012, william sullivan wrote: > Dana- This might be a really dumb question, but does your gas smell > like gas? My 447 started OK, but no full RPM. I am checking carb > settings, and for crud, before going further. But, using the same gas, I > have a Husky brush saw giving me trouble. This is new gas, too. It > doesn't smell right, so maybe a bad load? Too much ethanol? Both of us > got gas through the New Haven terminal. Might not affect a car, with > computers adjusting things. Something to think about. KISS. My truck > seems to be sucking a lot of gas, too. -- "If you want to build a ship, then don't drum up men to gather wood, give orders, and divide the work. Rather, teach them to yearn for the far and endless sea." - Antoine de Saint-Exup=E9ry ________________________________ Message 5 _____________________________________ Time: 05:26:58 AM PST US From: "b young" Subject: Re: Kolb-List: engine woes I had a similar problem that in fact forced me down, it was an air leak from a crack in the primer bulb. But an air leak would cause a lean condition... all my symptoms point to rich running. -Dana -- >>>>>>>>>>>>>>>... could there be a hair, grain of dirt, or other debris, in the float needle. this could cause a high fuel level in the float bowl. it may not be bad enough for the float bowl to over fill and run out, but run rich. just thinking out loud. boyd y ________________________________ Message 6 _____________________________________ Time: 05:33:04 AM PST US From: william sullivan Subject: Re: Kolb-List: engine woes - You should have called me when you were there.- It's 10 minutes away. - I wonder where the avgas comes from, and who mixes it? --- On Thu, 5/24/12, Dana Hague wrote: From: Dana Hague Subject: Re: Kolb-List: engine woes =0AI doubt it... the trouble seemed to start after filling up=0Awith avgas (which has pretty good quality control and no ethanol) at=0ASimsbury. =0A-Dana =0AAt 07:31 AM 5/24/2012, william sullivan wrote: =0A- Dana- This might be a really=0Adumb question, but does your gas smel l like gas?- My 447 started OK,=0Abut no full RPM.- I am checking carb settings, and for crud, before=0Agoing further.- But, using the same gas, I have a Husky brush saw=0Agiving me trouble.- This is new gas, too.- It doesn't smell=0Aright, so maybe a bad load?- Too much ethanol?- Both of us got=0Agas through the New Haven terminal.- Might not affect a car, with=0Acomputers adjusting things.- Something to think about.-=0AKISS. - My truck seems to be sucking a lot of gas,=0Atoo. =0A--=0A"If you want to build a ship, then don't drum up men to gather=0Awo od, give orders, and divide the work. Rather, teach them to yearn for=0Athe =============0A=0A ________________________________ Message 7 _____________________________________ Time: 05:47:44 AM PST US From: "John Hauck" Subject: RE: Kolb-List: engine woes could there be a hair, grain of dirt, or other debris, in the float needle. this could cause a high fuel level in the float bowl. it may not be bad enough for the float bowl to over fill and run out, but run rich. boyd y Folks: My Cuyuna ULII02 was very sensitive to over-rich condition. I installed a CPS in-flight adjustable main jet on the Mikuni carb. Just a tad rich over optimum power settings, the Cuyuna would shut down, just like hitting the kill switch. Never had an engine that was so sensitive to a slightly over-rich condition. The Cuyuna, mounted on my 1984 Ultrastar, consumed a lot of 100LL. It ran the same on 100LL as it did on 93 octane mogas without alcohol. My 447 operated the same, as well as the 80 and 100 hp Rotax 912. Only noticeable difference between 100LL and mogas on the two strokes was slightly lower EGT. Don't know about the 4 strokes, I don't run an EGT gauge. john h mkIII Titus, Alabama ________________________________ Message 8 _____________________________________ Time: 05:59:07 AM PST US Subject: Kolb-List: Re: engine woes From: "Richard Pike" A couple thoughts - does it have a metal float or a composite one? I have seen composite floats set lower than they should and cause excessive richness. Do you have a Mikuni and does it have an enrichner circuit like the Bing? Is it possible for the seat of the device to have a leak, and let fuel seep around it? If you have an enrichner, how is it actuated? I had a friend with a J-3 kitten and his panel mounted lever got a glitch and would not let the enrichner seat properly as the problem made the cable a bit too short. And probably none of this is pertinent, but here's hoping. -------- Richard Pike Kolb MKIII N420P (420ldPoops) richard (at) bcchapel(dot)org Kingsport, TN 3TN0 Now faith is the substance of things hoped for, the evidence of things not seen. Hebrews 11:1 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=373749#373749 ________________________________ Message 9 _____________________________________ Time: 05:59:07 AM PST US Subject: Re: Kolb-List: engine woes From: Michael Welch Boyd, Your suggestion is exactly what I was thinking, and also what I saw my instructor experience (crap in the fuel system on my his QS II ). Dana, if your engine ran fine at some previous point, I would suggest NOT changing needle settings. You don't fix an ailing engine by readjusting it to work with what is screwing it up. You analyze what the problem is BEFORE you make any changes, otherwise you never truly know if you fixed the problem properly. If an engine is generally running good, and then starts running lousy, you look for the likely causes first. Start out by scrubbing your entire fuel system to spotless condition. Then, verify all the components of your electrical system (plugs, wires, connections, etc.) Next, check compression, followed by a timing check. If the problem still persists after verifying that all of the above are perfect, consider pulling the carb, and checking to see if the float has developed a leak. I had this happen on my Cessna Marvel-Shebler carburetor. The way to check for leaks in a brass float is; you get two glasses of water. Ice cold and microwave hot. Hold the float underwater in the cold water for several seconds. If there is a leak, the shrinking air in the float will suck in a little water. Then, take your float out of the cold, and hold it under the hot water. The rapidly expanding air will literally blast out that sucked-in water, creating a dirty stream of clearly obvious filth, along with lots of bubbles. If the float is still in excellent shape, the dips in the cold and them hot won't make any difference. Consider an air leak by spraying some carb cleaner at the joint and mounting places of the carb. Make sure not to get close to the air inlet. If the engine accelerates from the carb cleaner, you have an intake leak. Just some thoughts......... Mike Welch On May 24, 2012, at 7:26 AM, b young wrote: > > I had a similar problem that in fact forced me down, it was an air leak from a crack in the primer bulb. > But an air leak would cause a lean condition... all my symptoms point to rich running. > > -Dana > -- > > >>>>>>>>>>>>>>>... > > could there be a hair, grain of dirt, or other debris, in the float needle. this could cause a high fuel level in the float bowl. it may not be bad enough for the float bowl to over fill and run out, but run rich. > > just thinking out loud. > > boyd y > > > > > ________________________________ Message 10 ____________________________________ Time: 06:57:00 AM PST US From: "John Hauck" Subject: RE: Kolb-List: Re: engine woes Do you have a Mikuni and does it have an enrichner circuit like the Bing? Is it possible for the seat of the device to have a leak, and let fuel seep around it? Richard Pike Richard P/Folks: That is a good point. Had forgotten about the leaking enricher seat. Cannot remember if the Mikuni uses similar system as the Bing. Those seats get old, hard, and leak with age. When they do, they present an over-rich condition. The ULII02 has CDI ign, so doubt Dana has a timing problem. Malfunctioning float/needle valve? Like I mentioned earlier, the ULII02 doesn't like an over-rich condition and will shut down in a second. john h mkIII Titus, Alabama ________________________________ Message 11 ____________________________________ Time: 02:14:27 PM PST US From: 1planeguy <1planeguy@kilocharlie.us> Subject: Kolb-List: Cheap covering job Well I have a semi off topic post. Can't think of anywhere where I am more likely to get an intelligent answer than here so hang on... I have had an odd job thrown in my lap. I have a CNC router table and got ask to make a fairly large scale Gee Bee R1 racer display model. Hanging from the ceiling will be as close to "airworthy" as it will ever need to be...so certified procedure and design went out the window. I am about done cutting the pieces out and will start assembly tonight, but I am going to have to cover this rascal. I don't want to waste "Poly-stuff" on a display plane so thought I would use dacron (sold by Aircraft Spruce for "peel-ply", because it is cheap and heat shrinkable) and I plan to just do latex house paint for color. What would work good for a glue to attach this to wood? -- */Jeremy Casey/* */K/**/ilo/**/C/**/harlie/**//**/D/**/etailing, Inc./**//* */Jeremy@kilocharlie.us /* */ /* ________________________________ Message 12 ____________________________________ Time: 02:33:44 PM PST US Subject: Re: Kolb-List: Cheap covering job From: Michael Welch Jeremy, I think the lightest-weight non-certified polyester fabric that Aircraft Spruce sells might be a better choice the the peel-ply. The peel-ply has sort of a coating on it, which is why it peels off fiberglass resin so well. IIRC, ACS has 1.7 oz stuff that would work fine, or maybe the 2.7 oz. Since we are talking display model ONLY, I think if it were me, I'd try a hot glue gun and an iron. If the heat of the hot glue makes it difficult to work with, then the next stuff I'd try is that yellow Carpenter's Glue that they sell at all the lumber stores. It dries pretty quickly. Lastly, the fact is, the Poly Tac cement would probably work very well, too. So would the clear PVC glue, which is obviously a very close chemical formula to the Poly Tac. Since a small can is only $3, give the PVC glue a try. Mike Welch On May 24, 2012, at 4:13 PM, 1planeguy wrote: > Well I have a semi off topic post. Can't think of anywhere where I am more likely to get an intelligent answer than here so hang on... > > I have had an odd job thrown in my lap. I have a CNC router table and got ask to make a fairly large scale Gee Bee R1 racer display model. Hanging from the ceiling will be as close to "airworthy" as it will ever need to be...so certified procedure and design went out the window. I am about done cutting the pieces out and will start assembly tonight, but I am going to have to cover this rascal. I don't want to waste "Poly-stuff" on a display plane so thought I would use dacron (sold by Aircraft Spruce for "peel-ply", because it is cheap and heat shrinkable) and I plan to just do latex house paint for color. What would work good for a glue to attach this to wood? > > > -- > Jeremy Casey > KiloCharlie Detailing, Inc. > Jeremy@kilocharlie.us > > > > ________________________________ Message 13 ____________________________________ Time: 02:33:49 PM PST US From: kinne russ Subject: Re: Kolb-List: Cheap covering job You should be talking to the model makers -- they'll likely have answers. On May 24, 2012, at 5:13 PM, 1planeguy wrote: > Well I have a semi off topic post. Can't think of anywhere where I am more likely to get an intelligent answer than here so hang on... > > I have had an odd job thrown in my lap. I have a CNC router table and got ask to make a fairly large scale Gee Bee R1 racer display model. Hanging from the ceiling will be as close to "airworthy" as it will ever need to be...so certified procedure and design went out the window. I am about done cutting the pieces out and will start assembly tonight, but I am going to have to cover this rascal. I don't want to waste "Poly-stuff" on a display plane so thought I would use dacron (sold by Aircraft Spruce for "peel-ply", because it is cheap and heat shrinkable) and I plan to just do latex house paint for color. What would work good for a glue to attach this to wood? > > > -- > Jeremy Casey > KiloCharlie Detailing, Inc. > Jeremy@kilocharlie.us > > > > ________________________________ Message 14 ____________________________________ Time: 03:16:07 PM PST US Subject: Kolb-List: MKIII accident back in March From: "Jason Omelchuck" I just came across this and did not remember seeing it on the list. NTSB Report: On March 24, 2012, about 1015 eastern daylight time, an experimental amateur-built New Kolb Aircraft Company Mark III Classic, N528DJ, was substantially damaged when it impacted trees while approaching DeLand Municipal Airport (DED), DeLand, Florida. The certificated private pilot and the passenger were not injured. The local personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. According to preliminary information provided by the Federal Aviation Administration (FAA), the airplane was on final approach to runway 23 when the engine lost power. The pilot deployed the airplane's parachute, and the airplane settled into the trees. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=373813#373813 ________________________________ Message 15 ____________________________________ Time: 03:25:36 PM PST US From: Herb Gayheart Subject: Re: Kolb-List: MKIII accident back in March There is a MkIII project/wreck for sale on Barnstomers...In Fla as I recall...Herb At 05:15 PM 5/24/2012, you wrote: > >I just came across this and did not remember seeing it on the list. > >NTSB Report: >On March 24, 2012, about 1015 eastern daylight time, an experimental >amateur-built New Kolb Aircraft Company Mark III Classic, N528DJ, >was substantially damaged when it impacted trees while approaching >DeLand Municipal Airport (DED), DeLand, Florida. The certificated >private pilot and the passenger were not injured. The local personal >flight was conducted under the provisions of 14 Code of Federal >Regulations Part 91. > >According to preliminary information provided by the Federal >Aviation Administration (FAA), the airplane was on final approach to >runway 23 when the engine lost power. The pilot deployed the >airplane's parachute, and the airplane settled into the trees. > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=373813#373813 > > ________________________________ Message 16 ____________________________________ Time: 03:25:56 PM PST US Subject: Re: Kolb-List: Cheap covering job From: Richard Girard Mike, Sorry buddy but you're full of BS about peel ply. Here's the Spruce part number for DACRON FULL WIDTH PEEL PLY 1.8 OZ #611 listed under Composites / fabric, p/n 09-00100 and the part number for 1.8 oz. polyester fabric under Covering Materials / fabric p/n 09-00100. Same stuff, no magic coatings, epoxy just doesn't stick to polyester. Rick Girard On Thu, May 24, 2012 at 4:33 PM, kinne russ wrote: > You should be talking to the model makers -- they'll likely have answers. > > > On May 24, 2012, at 5:13 PM, 1planeguy wrote: > > Well I have a semi off topic post. Can't think of anywhere where I am > more likely to get an intelligent answer than here so hang on... > > I have had an odd job thrown in my lap. I have a CNC router table and got > ask to make a fairly large scale Gee Bee R1 racer display model. Hanging > from the ceiling will be as close to "airworthy" as it will ever need to > be...so certified procedure and design went out the window. I am about > done cutting the pieces out and will start assembly tonight, but I am going > to have to cover this rascal. I don't want to waste "Poly-stuff" on a > display plane so thought I would use dacron (sold by Aircraft Spruce for > "peel-ply", because it is cheap and heat shrinkable) and I plan to just do > latex house paint for color. What would work good for a glue to attach > this to wood? > > > -- > > *Jeremy Casey* > > *K**ilo**C**harlie** **D**etailing, Inc.*** > > *Jeremy@kilocharlie.us* > > * > * > > * > > * > > > * > > * > > -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 17 ____________________________________ Time: 04:37:28 PM PST US From: "Lee Morgan" Subject: Kolb-List: twinstar MK II Thanks for the reply on the windshield, I copied what you have with the hinge and it does make it easier to get into. Also could you please check your W + B figures just so I can do some comparisons to make sure mine is correct. thanks, Lee.. lmorgan100(at)charter.net wrote: > first, > Has anyone tried splitting the windshield in half > with a piano hinge so the windshield could be opened up more ? That is how my Mark II is built. You might be able to see a little bit of it in this video or maybe one of my other videos. If you want any closer pics let me know and I'll get some. http://youtu.be/KdnNCubZA8Y -------- Cristal Waters Kolb Mark II Twinstar Rotax 503 DCSI Sept 2007 Private Pilot Aug 2008 ELSA Repairman for N193Y April 2008 Rotax 2 stroke maintenance April 2009 ________________________________ Message 18 ____________________________________ Time: 05:04:55 PM PST US From: Dana Hague Subject: Re: Kolb-List: Cheap covering job Just dope it on with butyrate dope from the local R/C hobby shop. Use dope for the finish, too... better finish than latex and much cheaper than poly stuff. -Dana do not archive At 05:13 PM 5/24/2012, 1planeguy wrote: >Well I have a semi off topic post. Can't think of anywhere where I am >more likely to get an intelligent answer than here so hang on... > >I have had an odd job thrown in my lap. I have a CNC router table and got >ask to make a fairly large scale Gee Bee R1 racer display model. Hanging >from the ceiling will be as close to "airworthy" as it will ever need to >be...so certified procedure and design went out the window. I am about >done cutting the pieces out and will start assembly tonight, but I am >going to have to cover this rascal. I don't want to waste "Poly-stuff" on >a display plane so thought I would use dacron (sold by Aircraft Spruce for >"peel-ply", because it is cheap and heat shrinkable) and I plan to just do >latex house paint for color. What would work good for a glue to attach >this to wood? > > >-- > > >http://www.matronics.com/Navigator?Kolb-List >http://www.matronics.com/contribution > -- "Alcohol, Tobacco and Firearms" should be a convenience store, not a government agency. ________________________________ Message 19 ____________________________________ Time: 05:34:47 PM PST US From: Dana Hague Subject: Re: Kolb-List: MKIII accident back in March At 06:15 PM 5/24/2012, Jason Omelchuck wrote: >According to preliminary information provided by the Federal Aviation >Administration (FAA), the airplane was on final approach to runway 23 when >the engine lost power. The pilot deployed the airplane's parachute, and >the airplane settled into the trees. The question is what was he doing so low in FINAL APPROACH that he couldn't make the runway? -Dana -- Newton's Seventeenth Law of American Life: For every action, there is an unequal and moronic overreaction. ________________________________ Message 20 ____________________________________ Time: 05:48:32 PM PST US From: "John Hauck" Subject: RE: Kolb-List: MKIII accident back in March The question is what was he doing so low in FINAL APPROACH that he couldn't make the runway? -Dana Folks: I imagine he was wishing he had bought a Rotax 912 instead of a Jabiru. john h mkIII Titus, Alabama ________________________________ Message 21 ____________________________________ Time: 05:50:08 PM PST US From: kinne russ Subject: Re: Kolb-List: MKIII accident back in March Dana You & I think alike. I always want to be where I can land safely when/if the engine quits. Lots of pilots simply drag it in with power, on final, and sometimes get in trouble. I suspect that's what killed Norm Labhart. Why NOT fly defensively? Russ On May 24, 2012, at 8:31 PM, Dana Hague wrote: > At 06:15 PM 5/24/2012, Jason Omelchuck wrote: > >> According to preliminary information provided by the Federal Aviation Administration (FAA), the airplane was on final approach to runway 23 when the engine lost power. The pilot deployed the airplane's parachute, and the airplane settled into the trees. > > The question is what was he doing so low in FINAL APPROACH that he couldn't make the runway? > > -Dana > -- > Newton's Seventeenth Law of American Life: For every action, there is an unequal and moronic overreaction. > > > ________________________________ Message 22 ____________________________________ Time: 05:53:05 PM PST US From: "John Hauck" Subject: Kolb-List: Test Flight Kolbers: Yesterday installed new NGK DCPR8E spark plugs, new carb boots, and my newly repaired and modified Titan exhaust system. Today I got an hour's flight time, first flight since I landed on my return from Lakeland two months ago. Neither the MKIII or I had forgotten how to fly. All went well. Had a great flight and refresher on what a great little airplane the 20 year old MKIII is. After landing at Gantt International Airport, I let the engine idle, got out to check the exhaust and other stuff on the airplane. Noticed something dripping from the fuel pump on the 912ULS. Shut down the engine and discovered the fuel pump is leaking and will have to be replaced. Glad I discovered the leak when I did. Strictly by fate. Much rather find it now than half way across the country next month. john h mkIII Titus, Alabama ________________________________ Message 23 ____________________________________ Time: 06:04:58 PM PST US From: Dana Hague Subject: RE: Kolb-List: MKIII accident back in March At 08:47 PM 5/24/2012, John Hauck wrote: > > > The question is what was he doing so low in FINAL APPROACH that he couldn't >make the runway? > >Folks: > >I imagine he was wishing he had bought a Rotax 912 instead of a Jabiru. Good one! :) -Dana do not archive -- What's brown and sticky? A stick! ________________________________ Message 24 ____________________________________ Time: 06:05:00 PM PST US From: Dana Hague Subject: Re: Kolb-List: engine woes Float level, either submerged float or debris on / bad needle sounds likely, but I shut the fuel valve off while the engine was running, thinking if a high level in the bowl was the problem it would run better as the level dropped before it quit. There was no change. I changed the jetting not so much as a fix but as an experiment. The floats are plastic, not brass, so that's unlikely anyway. An air leak is also unlikely as all the symptoms point to rich running, not lean. Richard suggested the enrichener (yes, the Mikuni has an enrichener circuit) and that's something I intend to check... I have a new remote one that I never got around to installing. That could very well be it... operating it at full throttle has minimal effect, though it still makes a big difference at lower throttle setting. I'll also replace the plugs (even though they look fine) and add fresh fuel. All of this will have to wait until after the holiday weekend, though. I can check the compression but I don't know what the proper values are for this engine. -Dana At 08:58 AM 5/24/2012, Michael Welch wrote: >Boyd, > > Your suggestion is exactly what I was thinking, and also what I saw my > instructor experience (crap in the fuel system >on my his QS II ). > > Dana, if your engine ran fine at some previous point, I would suggest > NOT changing needle >settings. You don't fix an ailing engine by readjusting it to work with >what is screwing it up. You analyze what >the problem is BEFORE you make any changes, otherwise you never truly know >if you fixed the problem >properly. > > > If an engine is generally running good, and then starts running lousy, > you look for the likely >causes first. Start out by scrubbing your entire fuel system to spotless >condition. Then, verify >all the components of your electrical system (plugs, wires, connections, >etc.) Next, check compression, >followed by a timing check. > > If the problem still persists after verifying that all of the above are > perfect, consider pulling the carb, >and checking to see if the float has developed a leak. I had this happen >on my Cessna Marvel-Shebler >carburetor. The way to check for leaks in a brass float is; you get two >glasses of water. Ice cold and >microwave hot. Hold the float underwater in the cold water for several >seconds. If there is a leak, the >shrinking air in the float will suck in a little water. Then, take your >float out of the cold, and hold it under the >hot water. The rapidly expanding air will literally blast out that >sucked-in water, creating a dirty stream of >clearly obvious filth, along with lots of bubbles. > If the float is still in excellent shape, the dips in the cold and them > hot won't make any difference. > > Consider an air leak by spraying some carb cleaner at the joint and > mounting places of the carb. Make >sure not to get close to the air inlet. If the engine accelerates from >the carb cleaner, you have an intake >leak. > > Just some thoughts......... > >Mike Welch > > >On May 24, 2012, at 7:26 AM, b young wrote: > >> >>I had a similar problem that in fact forced me down, it was an air leak >>from a crack in the primer bulb. >>But an air leak would cause a lean condition... all my symptoms point to >>rich running. >> >>-Dana >>-- >> >> >>>>>>>>>>>>>>>... >> >>could there be a hair, grain of dirt, or other debris, in the float >>needle. this could cause a high fuel level in the float bowl. it may >>not be bad enough for the float bowl to over fill and run out, but run rich. >> >>just thinking out loud. >> >>boyd y >> >> >> >> >>href="http://www.matronics.com/Navigator?Kolb-List">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/contribution >> > > > >http://www.matronics.com/Navigator?Kolb-List >http://www.matronics.com/contribution > -- What's brown and sticky? A stick! ________________________________ Message 25 ____________________________________ Time: 07:53:18 PM PST US From: gliderx5@comcast.net Subject: Re: Kolb-List: Latex Paint Forum For anyone interested, I just posted the slides from the forum on my web si te. I hope that they are useful. http://home.comcast.net/~mmorrison123/Latex.htm Malcolm Morrison ----- Original Message ----- From: "Malcolm Brubaker" Sent: Sunday, April 22, 2012 9:02:54 PM Subject: Re: Kolb-List: Latex Paint Forum Hi malcolm malcolm from michigan here do you think ther is a posabilety you could have the speach recorded and put on youtube? i would love to see it cant make the show i would like to learn moor about painting white dacron w ith Latex. I know rans uses paint on there planes dacron planes some times mal ps please check out my web site Malcolm & Jeanne Brubaker Michigan Sport Pilot Repair http://michigansportpilotrepair.com LSRM-A, PPC, WS Great Sails - Sailmaker for Ultralight & Light Sport (989)513-3022 From: "gliderx5@comcast.net" Sent: Sunday, April 22, 2012 8:07 PM Subject: Kolb-List: Latex Paint Forum Just an FYI for anyone in the Suffolk, VA area. I will be at the VA Festiva l of flight this coming weekend presenting a forum on painting your airplan e with inexpensive latex paint. The forum is currently scheduled to run fro m 11:15 to 12:15 on Saturday (maybe Sunday too). I will talk about finishin g my Kolb MKII, Titan Tornado, and Pietenpol Aircamper. Weather permitting I will have the Titan with me. Stop by and say hi if you get the chance. Be low is a link to the festival=99s web site. http://virginiaflyin.org/ Malcolm Morrison http://home.comcast.net/%7Emmorrison123/Airplanes.htm http://www.matro= == == ________________________________ Message 26 ____________________________________ Time: 09:29:56 PM PST US From: "Ron @ KFHU" Subject: Re: Kolb-List: engine woes Your symptoms sounded a lot like my lean symptoms. :-) Ron @ KFFL ======================= ---- Dana Hague wrote: ============ At 05:17 AM 5/24/2012, Ron @ KFHU wrote: > >I had a similar problem that in fact forced me down, it was an air leak >from a crack in the primer bulb. But an air leak would cause a lean condition... all my symptoms point to rich running. -Dana -- There is always a law against doing anything interesting. -- Ron @ KFHU ------------------------------------------------------------------------------------- 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.