ul power engine problems

I have to agree with Winston, even though my UL was running better and more power then it ever had(after I corrected a bad valve grinding issue and did an upper end overhaul), I would definitely take the Titan over the UL for the simple reason of Lycoming history. Witnesses reported the take-off preparation, with engine power-up as being normal. When I spoke with them about the different engines in June they said the Titan way outperforms the UL. These engines are designed and finely tuned at the factory to give maximum HP under very precise conditions. They saw the airplane leveling, then slightly turning to the right, Forum for homebuilt experimental & light sport aircraft pilots, owners, & builders. Engines . More power — less weight. Are you going to run a prop that operates efficiently at 3300 rpm? by deckofficer » Sun Mar 01, 2015 8:54 pm. UL260 UL350 UL390 UL520 Manuals Service bulletins Frequently asked questions ULPowered aircraft Step files . The engine that Just has on their blue demo plane weighed 259 from the factory. That means a 60-64" prop. According to Gary, Troy, and Harrison at Just, along with the prop manufacturer, the UL engines were not making quoted rated power. It's not rocket science but critical for best performance. No, I don't mean SAE, I'm referring to correctly installing the engine, cooling ducts, ECU, and air filter. Discover our engines Features & benefits. Witnesses reported that they heard the engine stopping abruptly when the airplane was about 2/3 of the length of the runway. Contact . No experience to offer, but a comment on the 'bogus' spin. After a normal take-off run with flaps up, the airplane took-off. I'm currently flying the Titan in my carboncub and it has astonishing torque and power and it's cheaper then the UL. I recently swapped out my UL 350iS for a Rotax 912 ULS because of the way UL attaches the prop flange to the end of the crankshaft. The truly modern engines feature FADEC (full authority digital engine control) with multi-point electronic fuel injection, and dual electronic ignition (with variable timing), excellent power-to-weight ratio, and high fuel efficiency in a conventional configuration: Air-cooled, direct drive, horizontally opposed four-cylinder. Low prop speed is the magic bullet used by Rotax (and all other reduction-drive engines, like Sauer where that chart came from.) This may have been due to a slight suction on the port, but more likely was due to a small change in the mixture. The Titan pulled over 780 pounds of thrust with 355 ft/lbs of torque during test runs at Just. UL Power light aircraft engines. Prior to seeing the statement above I tried plumbing this sensor to various locations, attempting to get a proper pressure reading to match the outside air pressure. The NTSB did their thing, and after a thorough investigation, it was found that the ECU was mounted on the Firewall. to the air coming into the engine. Spare parts Kits ULRead Software . I just wonder if the UL power develop some problems that I never heard about or if they just like Titan better. Did they dump the UL's or are they still a good option? During flight testing I noticed a slight decrease in Static RPM, but as the aircraft began rolling down the runway, the RPM would recover. News . The aircraft crashed and was totaled. Didn't get details. http://www.forum-ulm-ela-lsa.net/viewtopic.php?f=443&t=3239, http://corvus-hungary.com/en/sa_ultra_l ... am_26/t_UL. I figured it must be some things that people weren't liking. The engine that Just has on their blue demo plane weighed 259 from the factory. UL, Jabiru, Corvair all have the problem of producing rated power only at high speeds which require small props in order to keep the tip speed subsonic. Then they changed over to the Titan. Sales centers . The asymetrical loading on the prop (I was running a 2 blade Cato, 74 x 34) causes this connection to loosen up, both stretching and wearing the bolt threads and the spline teeth, especially on the flange. More power – less weight. The engine's performance and lack of communication and also the faith in UL Power engines sink to a minimum level. Homebuilt Experimental Aircraft & E-LSA Forums. ULPower Aero Engines Simply the best engine to power your airplane! I like being able to burn mogas but in the long run the best engine will be the best. If you have a small airframe that can get out of the way of the stream tube of such a prop, fine. The Titan pulled over 780 pounds of thrust with 355 ft/lbs of torque during test runs at Just. I spoke to Harrison Smith at Sun and Fun 15 when he flew the UL power superstol XL down and he seemed very pleased with it. Skip to navigation . Weight up front was not an issue for that plane. Instead of forging the flange as an intregal part of the crankshaft, UL has a short (less than 1/2") spline on the end of the crankshaft that engages a spline on the prop flange which is held in place with a large bolt that threads into center of the end of the crank shaft. Out of the several locations, my first attempt was by far the most successful. I then used some 1/8"ID radio control aircraft fuel tubing to connect the ports. For general discussion of the Just Aircraft family of aircraft. I'm assuming the later because I also. I just ordered the Titan option for my own reasons. I want to address each one in detail, so get comfortable. I live on 3 acres, and have a 220' straight, and another 350+'. ~In reading several reviews from other UL Power owners, it becomes painfully obvious that these aren't engines that you can simply throw under the cowling, slap a prop on it and get wow performance. Forum for homebuilt experimental & light sport aircraft pilots, owners, & builders. The idea was to take a pressure reading from a location that would be virtually. I'm sure running the ECU port open to the cabin air works ok, but imagine an OAT temp of 40F, and the cabin being a toasty 80F. According to Gary, Troy, and Harrison at Just, along with the prop manufacturer, the UL engines were not making quoted rated power. You might also be interested in the Rotax 912 turbo conversion made by Vz POWER. It doesn't take much to get a perceptable vibration. The UL Power ECU is not designed for such extreme … ~Several years ago, a Sonex builder took off with his new UL Power engine and experienced total engine failure above the runway. A couple of problems, technical issues, lack of good props, lack of the option for hydraulic constant speed prop makes the UL Power less interesting than any other engine. UL definitely needs to look at their pricing if they want to complete with the Titan. Does anyone know what the difference was between the UL power 180 horsepower engine and the Titan 180 horsepower engine? Accessories . Weight up front was not an issue for that plane. This guy was lucky to walk away from the crash site. I installed a brass nipple just aft of the intake scoop opening. This would most certainly constitute a change in pressure, and in my testing has shown to make a valuable difference. Thanks for the replies. Engine will be the best engine to power your airplane to the right, UL engines! For best performance some things that people were n't liking UL390 UL520 Manuals Service bulletins Frequently asked ULPowered. Horsepower engine and the Titan pulled over 780 pounds of thrust with 355 ft/lbs of during. //Corvus-Hungary.Com/En/Sa_Ultra_L... am_26/t_UL Sun Mar 01, 2015 8:54 pm total engine failure above the runway was! Of communication and also the faith in UL power engines sink to a minimum level torque and power it. 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