---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Thu 02/16/12: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:16 PM - Re: New Belt Reduction Ratio for MZ 34 (Jack B. Hart) 2. 01:29 PM - Re: Tillotson Carburetor Icing (Phil) 3. 09:02 PM - Re: Altitude/speed control on approach (Frankd) 4. 09:20 PM - Re: Re: Altitude/speed control on approach (John Hauck) ________________________________ Message 1 _____________________________________ Time: 12:16:02 PM PST US From: "Jack B. Hart" Subject: Kolb-List: RE: New Belt Reduction Ratio for MZ 34 Kolbers, It took some time to get this up. I increased the belt reduction ratio from 2.34 to 2.60 in an attempt to get the last two hp out of the MZ 34. How it was done can be seen at: http://jackbhart.com/firefly/firefly161.html If one clicks on the drawings a larger view will be displayed. Jack B. Hart FF004 Winchester, IN ________________________________ Message 2 _____________________________________ Time: 01:29:45 PM PST US From: Phil Subject: Re: Kolb-List: Tillotson Carburetor Icing Thanks, Jack. Good info. Just for grins, I fashioned this device one evening out of some 1/2" alum t ubing. Does it work? No idea; it sure gets hot. I've done no testing, nor p lan to any time soon --I just wanted to share the attempt. Bulb type: JC GY6.35 12v 50w, eBay, I bought 10 of them for around $8 total. http://phactor.com/CarbHeater_3.jpg http://phactor.com/CarbHeater_2.jpg http://phactor.com/CarbHeater_off.jpg http://phactor.com/CarbHeater_on.jpg http://phactor.com/CarbHeater_1.jpg Phil H FF-11-4-0076 --- On Thu, 2/9/12, Jack B. Hart wrote: From: Jack B. Hart Subject: Kolb-List: Tillotson Carburetor Icing Phil and Mike, I up dated my page on the Tillotson.- It can be found at: http://jackbhart.com/firefly/firefly153.html I thought about using ultra bright LEDs but it became too complicated and expensive.- The next best bet was to use ceramic coated wire wound resist ers. But then I found these little stud heaters, and they seemed to be the best bet for getting the heat to where it was needed, and the price was right. Dana, My object is to keep the carburetor from icing up while mucking around on o r close to the ground when the engine is operating below its normal cruise speed.- I did not consider a free air heater as it would be too heavy and I did not want to loose any horses too.- When you do not have many, you wan t to keep them whipped up and running. Jack B. Hart FF004 Winchester, IN ............................................ From: Phil Subject: Re: Kolb-List: CARB ICING 912 Hi Jack: I'm holding my Tillotson in my hand. I would love to know exactly where you drilled :).................. le, List Admin. ________________________________ Message 3 _____________________________________ Time: 09:02:40 PM PST US Subject: Kolb-List: Re: Altitude/speed control on approach From: "Frankd" Hi Guys, I've been reading this post and it seems we've gone away from the original question. When I was just learning to fly my Dad told me that the throttle controls altitude and the stick controls airspeed. I did not believe him until I actually found it was true!! (cessna 172) Now.. I believe this question is being asked about Kolbs.. and it is still true. If you are a low time pilot and have not had this experience in a plane like a cessna or Kolb then it is something that might make your flying better. To the original person who posed this question, if you are flying in the pattern and you are trying to hold airspeed, set your throttle at some RPM that causes a decent, say 1700RPM, and then control your approach airspeed by pushing forward on the stick or pulling back. You will find that there is a certain attitude to the plane that equals , say 50MPH, that you get used to. If the plane is in a steady attitude (nose down, or level) and you increase or decrease throttle the aircraft should start to climb or decend. If you are approaching the runway at 50 mph but seem to be decending too quickly, apply a little power to reduce the decent. (and reduce power a bit if you don't seem to be decending enough!) Sounds weird, but after you think about it, it makes sense. I don't disagreed at all about other types of aircraft, lear jets, etc.. I have flown in an L39 where more power=faster but thats a different type of flying. To the guy learning in a KOLB or any trainer, I spent a ton of time in a citabria with an instructor, to learn how to mix power and attitude to get it just right. Keep 55MPH down the final approach in a kolb and keep going until right near the ground and then ease off the power and flare at the same time. Good luck with your training. FrankD MkIIIXtra 1014S 14Hrs into 40hr flyoff time. No bent legs yet! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=366449#366449 ________________________________ Message 4 _____________________________________ Time: 09:20:33 PM PST US From: "John Hauck" Subject: RE: Kolb-List: Re: Altitude/speed control on approach If the plane is in a steady attitude (nose down, or level) and you increase or decrease throttle the aircraft should start to climb or decend. If you are approaching the runway at 50 mph but seem to be decending too quickly, apply a little power to reduce the decent. (and reduce power a bit if you don't seem to be decending enough!) Sounds weird, but after you think about it, it makes sense. FrankD Works a little different with a high thrust line pusher than does a tractor aircraft. Probably going to use a lot more pitch adjustment than power adjustment. Reducing power loses altitude, as does increasing power because the high thrust line tries to push the nose down. I generally shoot my landings power off. If I can make my touchdown point power off, I can make it if I lose the engine. Was a habit I got into way back in the early two stroke days when engines quit quite often at idle and low power settings. Hope I still have an airplane at Gantt IAP. Haven't checked on it in a while. john h mkIII Titus, Alabama ------------------------------------------------------------------------------------- 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.