---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 07/21/07: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:37 AM - Kolb list Prop Balancer (ElleryWeld@aol.com) 2. 10:06 AM - Saturday Morning Balloons (Richard Pike) 3. 11:14 AM - Follow up to FS 1 prop pitch & lean mixture problem (Thom Riddle) 4. 12:05 PM - Re: Follow up to FS 1 prop pitch & lean mixture problem (lucien) 5. 12:27 PM - Re: Re: Follow up to FS 1 prop pitch & lean mixture problem (Richard Pike) 6. 03:57 PM - Re: Radiator needed (Southern Reflections) 7. 08:26 PM - Nose Cone (Scott Mac.) 8. 08:47 PM - Toy Hauler for MK III Xtra (justin.a.hawkins) 9. 11:17 PM - Re: Off To Oshkosh (Ed Chmielewski) ________________________________ Message 1 _____________________________________ Time: 03:37:58 AM PST US From: ElleryWeld@aol.com Subject: Kolb-List: Kolb list Prop Balancer This is the Prop Balancer I built and it works like this the brass piece has a tapered end inside it to center it on the balancing base Pin insert the brass slug into your Prop and then set it on the balancing pin on the base, sitting on your bench use a 6 inch precision scale to measure from the bench to a known point on the Prop blade tip, then rotate your next blade to that same point that you measured from on the first blade etc., for each blade I sand the end of the blade to get a good balance I hope this helps anyone with Vibration Problems if you dont have a Lathe to make your own I am willing to help anyone on the list at cost of materials Ellery in Maine N447EB Original Firestar ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour ________________________________ Message 2 _____________________________________ Time: 10:06:43 AM PST US Subject: Kolb-List: Saturday Morning Balloons From: "Richard Pike" This morning Ed & I got in a little dawn patrol flight, every year Kingsport has a hot air balloon event at the end of Fun Fest, here's some pictures from it. Richard Pike MKIII N420P (420ldPoops) PS - Tried to post this earlier, but since I didn't give it a subject name, (duh) it never showed up. Probably will tomorrow... Read this topic online here: http://forums.matronics.com/viewtopic.php?p=125093#125093 Attachments: http://forums.matronics.com//files/p1050458_large_150.jpg http://forums.matronics.com//files/p1050561_large_414.jpg http://forums.matronics.com//files/p1050565_large_235.jpg http://forums.matronics.com//files/p1050567_large_483.jpg ________________________________ Message 3 _____________________________________ Time: 11:14:12 AM PST US Subject: Kolb-List: Follow up to FS 1 prop pitch & lean mixture problem From: "Thom Riddle" Today, I flew a bit to see how the movement of the mixture clip down to riches position was doing and the EGTs were up to 1200+ again. Perhaps different atmospheric conditions was the cause. At any rate, I then increased the pitch of the prop but apparently a bit too much because I am getting about 6250 rpm WOT level flight. BUT the EGTs are down below 1100 during cruise and the CHTs are up a bit. The bad news is that now the engine will not hold a particular rpm, especially below 5500 rpm. I've read about what causes this but can't remember where it was nor what to do about it. I have a big flight planned for tomorrow so I'm deferring the next step until after this flight. I'll take the carb home after tomorrow's flight and check out all the jets etc to make sure they are the correct ones. I'm betting that the needle jet is leaner than it should be. I don't plan to decrease the prop pitch until I find the real problem and fix it. If the jets are all the right number and the o-rings, seals, and float levels are good. I'm not sure what to do next. Any other ideas or resources for curing the rpm instability problem? I sure hope I can get this nearly new 447 to run as good as my old "worn out" 377. -------- Thom in Buffalo N197BG FS1/447 -------------------- "Blind respect for authority is the greatest enemy of truth." Albert Einstein Read this topic online here: http://forums.matronics.com/viewtopic.php?p=125097#125097 ________________________________ Message 4 _____________________________________ Time: 12:05:10 PM PST US Subject: Kolb-List: Re: Follow up to FS 1 prop pitch & lean mixture problem From: "lucien" Thom Riddle wrote: > Today, I flew a bit to see how the movement of the mixture clip down to riches position was doing and the EGTs were up to 1200+ again. Perhaps different atmospheric conditions was the cause. At any rate, I then increased the pitch of the prop but apparently a bit too much because I am getting about 6250 rpm WOT level flight. BUT the EGTs are down below 1100 during cruise and the CHTs are up a bit. > > The bad news is that now the engine will not hold a particular rpm, especially below 5500 rpm. I've read about what causes this but can't remember where it was nor what to do about it. I have a big flight planned for tomorrow so I'm deferring the next step until after this flight. > > I'll take the carb home after tomorrow's flight and check out all the jets etc to make sure they are the correct ones. I'm betting that the needle jet is leaner than it should be. > > I don't plan to decrease the prop pitch until I find the real problem and fix it. If the jets are all the right number and the o-rings, seals, and float levels are good. I'm not sure what to do next. Any other ideas or resources for curing the rpm instability problem? I sure hope I can get this nearly new 447 to run as good as my old "worn out" 377. Did you say you raised the jet needle or lowered it? If you raised it, the midrange EGT's should have gone down, not up. My 447 single carb on my trike always wandered a bit in the 4500 to 5500 rpm range and I never was able to really cure it. My carb had all the stock jets in it for sea level and my altitude was basically sea level as well. I did try raising the needle a notch on the guess that it was lean, but that actually caused it to 4-stroke intermittently so I was actually about right before then ;). My suggestion would be to reset everything back to the Rotax recommended jetting for your altitude/temp, reset your pitch for just bumping redline at WOT, straight and level. And then go from there. That's what I had to do with my trike when I monkeyed with it and that pretty much got me back in the ballpark. Then you can start suspecting the EGT gauges or looking for other problems... But I'd go back to baseline on the jetting/propping first... That's always worked for me... Their jetting recommendations are virtually spot on for pretty much every condition you can think of. I moved my FS II from sea level to 7000' MSL. I did the jet calculations on the chart and installed the new ones (158 mains to 148) and it was spot on..... A little rich again now in the summer, but thats what the chart says as well (I need 145's right now really).... LS -------- LS FS II Read this topic online here: http://forums.matronics.com/viewtopic.php?p=125100#125100 ________________________________ Message 5 _____________________________________ Time: 12:27:43 PM PST US From: "Richard Pike" Subject: Re: Kolb-List: Re: Follow up to FS 1 prop pitch & lean mixture problem Just to throw a little chaos into the mix... After many hours, the jet needle will wear down a bit right in the area where you normally position the throttle from bouncing off the needle jet. And the engine will gradually get slightly richer. If the number coding at the top of the needle looks worn away, then there is a good chance that the business area is also worn. Richard Pike MKIII N420P (420ldPoops) ----- Original Message ----- From: "lucien" Sent: Saturday, July 21, 2007 3:04 PM Subject: Kolb-List: Re: Follow up to FS 1 prop pitch & lean mixture problem > > > Thom Riddle wrote: >> Today, I flew a bit to see how the movement of the mixture clip down to >> riches position was doing and the EGTs were up to 1200+ again. Perhaps >> different atmospheric conditions was the cause. At any rate, I then >> increased the pitch of the prop but apparently a bit too much because I >> am getting about 6250 rpm WOT level flight. BUT the EGTs are down below >> 1100 during cruise and the CHTs are up a bit. >> >> The bad news is that now the engine will not hold a particular rpm, >> especially below 5500 rpm. I've read about what causes this but can't >> remember where it was nor what to do about it. I have a big flight >> planned for tomorrow so I'm deferring the next step until after this >> flight. >> >> I'll take the carb home after tomorrow's flight and check out all the >> jets etc to make sure they are the correct ones. I'm betting that the >> needle jet is leaner than it should be. >> >> I don't plan to decrease the prop pitch until I find the real problem and >> fix it. If the jets are all the right number and the o-rings, seals, and >> float levels are good. I'm not sure what to do next. Any other ideas or >> resources for curing the rpm instability problem? I sure hope I can get >> this nearly new 447 to run as good as my old "worn out" 377. > > > Did you say you raised the jet needle or lowered it? If you raised it, the > midrange EGT's should have gone down, not up. > > My 447 single carb on my trike always wandered a bit in the 4500 to 5500 > rpm range and I never was able to really cure it. My carb had all the > stock jets in it for sea level and my altitude was basically sea level as > well. I did try raising the needle a notch on the guess that it was lean, > but that actually caused it to 4-stroke intermittently so I was actually > about right before then ;). > > My suggestion would be to reset everything back to the Rotax recommended > jetting for your altitude/temp, reset your pitch for just bumping redline > at WOT, straight and level. And then go from there. > That's what I had to do with my trike when I monkeyed with it and that > pretty much got me back in the ballpark. > Then you can start suspecting the EGT gauges or looking for other > problems... But I'd go back to baseline on the jetting/propping first... > That's always worked for me... > > Their jetting recommendations are virtually spot on for pretty much every > condition you can think of. I moved my FS II from sea level to 7000' MSL. > I did the jet calculations on the chart and installed the new ones (158 > mains to 148) and it was spot on..... A little rich again now in the > summer, but thats what the chart says as well (I need 145's right now > really).... > > LS > > -------- > LS > FS II > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=125100#125100 > > > ________________________________ Message 6 _____________________________________ Time: 03:57:27 PM PST US From: "Southern Reflections" Subject: Re: Kolb-List: Radiator needed $500.oo Joe N101HD 601XL ----- Original Message ----- From: Malcolmbru@aol.com To: kolb-list@matronics.com Sent: Friday, July 20, 2007 6:58 PM Subject: Re: Kolb-List: Radiator needed what did that cost you joe? mal ps I will be at sea base all week ------------------------------------------------------------------------- ----- Get a sneak peek of the all-new AOL.com. ________________________________ Message 7 _____________________________________ Time: 08:26:57 PM PST US Subject: Kolb-List: Nose Cone From: "Scott Mac." I'm looking to replace the nose cone on my Mk II. Would the nose cone from the Mk IIIC fit my Mk II? -------- Scott Mac. MK II Read this topic online here: http://forums.matronics.com/viewtopic.php?p=125144#125144 ________________________________ Message 8 _____________________________________ Time: 08:47:06 PM PST US Subject: Kolb-List: Toy Hauler for MK III Xtra From: "justin.a.hawkins" Hi guys, I've watched this forum for a while, but never posted. I have a quick question for you. I plan on buying a Mk III Xtra within the next year, once I find a good one. I also have to buy a fifth wheel trailer for my work (MWD engineer). I want to be able to fit the plane in the trailer, so I guess I just need to know the width at the wingtips and say 5' and 7' from the tips, if anyone knows it. I'm looking at these 2 models, but have a feeling it will only fit in the bigger version: [url]http://www.forestriverinc.com/nd/floorplanview.asp?name=4&page=worknp&series=5thWheels and the larger one: [url]http://www.forestriverinc.com/nd/floorplanview.asp?name=7&page=worknp&series=5thWheels any help is greatly appriciated. Thanks guys.[/url] Read this topic online here: http://forums.matronics.com/viewtopic.php?p=125148#125148 ________________________________ Message 9 _____________________________________ Time: 11:17:21 PM PST US From: "Ed Chmielewski" Subject: Re: Kolb-List: Off To Oshkosh Rick/All, Please post a link to pics like this in the future. It really hamstrings those of us stuck with dial-up service. Thanx, Ed in JXN ----- Original Message ----- From: Richard & Martha Neilsen To: kolb-list@matronics.com Sent: Friday, July 20, 2007 10:32 PM Subject: Kolb-List: Off To Oshkosh Due to the recent change of reduction drive on my VW powered MKIIIC I decided to trailer my plane to Scott Trask's in Iron Mountain. MI and fly in to Oshkosh from there. I got busy and finished up my trailer and loaded it up for the first time today. The attached photo is the plane loaded with one of the clam shell doors open. Note I have removed the trailer wheels for loading. I will be posting the trailer on George Alexander web site when I get back. I will be heading out Sunday with the trailer/plane and flying into Oshkosh on Monday. Rick Neilsen Redrive VW Powered MKIIIC ------------------------------------------------------------------------------------- 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.