rotax 447 alternative rotax 447 alternative

And if they can't make it much cheaper, the reason is that there is no business case there. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Comes with four-point harnesses. VERY NICE MIKUNI SINGLE CARB FUEL PUMP FOR ROTX 532 503 447 377 277 AND HIRTH !! Pre-Owned $3,995.00 rotax-parts (124) 100% or Best Offer +$795.00 shipping from United Kingdom Sponsored 377 447 Rotax Engine Crankshaft & Engine Crankcase Assembly Ultralight Aircraft Pre-Owned $295.00 northern-parts (14,461) 99.8% Buy It Now +$35.00 shipping Last one Customer Service Information Report (CSIR). Can try to find 'em, but even if i do, putting them back in might be a pain in the rear. I weigh 200 lbs and he weighs 160, so the performance will automatically be better. JavaScript is disabled. 40 HP ROTAX 447 ENGINE WITH DUCATI IGNITION ! Rotax 377 447 503 532 582 618 Engines Crankshaft Hex Nut & Washer 842-239 UL, Rotax Ultralight Aircraft Oil Injection Tank Reservoir Low Oil Warning Sensor, 447 Rotax Engine Crankshaft Connecting Rod Ultralight Aircraft Hovercraft 447 UL. Already got it sold for him! GOOD CLEAN FAN SHROUD FOR 447 ENGINE / MOTOR, NEW ROTAX Starter for 447 503 532 582 Light Aircraft Ultra Light *REPLACES GPL*, 277 377 447 503 582 Rotax Cuyuna Voltage Regulator Rectifier Ultralight Aircraft. Delivered the Engine well packed and on-time. Product Description Rotax 447 UL SCDI 40HP Aircraft Engine 2-stroke engine specially developed for recreational aircraft 2 cylinders, cooled by fan Piston ported intake Single capacitor discharge Ignition (SCDI) Single Bing carburetor Mikuni pulse driven diaphragm fuel pump Recoil or electric starter John Mini, I will be in your neck of the woods sometime this Friday night and staying till late afternoon Saturday. NICE ULTRALIGHT AIRCRAFT MOTOR ! The standard starter is a recoil start type, with an electric starter optional. The Rotax 447 features piston-ported, air-cooled cylinder heads and cylinders, utilizing either a fan or free air for cooling. Hi Chuck: Thanks! However, I will post your letter for others to see. General aviation people say, Well, of course four stroke is better. But thats the only kind of engine most of them know, and their aircraft weigh enough to accommodate heavier powerplants. Controls offered feedback and remained effective to a very low speed. I have flown this award winning bee quite a bit. I would like to contact companies that make their own engines and can make changes in their engines. Its the entities taking used Yamaha engines and converting them that are offering an alternative. Here are a few examples: You must log in or register to reply here. It may not display this or other websites correctly. All of them Engines are way heavier than the 582UL, 618UL, 670! Thanks! New FI.R.M. The engine can be equipped with either one or two piston-type float carburetors. For more recent exchange rates, please use the. and ROTAX factory in Gunskirchen, Austria. Plus expensive and relatively heavy. The engine includes an intake air filter and can be fitted with an intake silencer system. Nonetheless, four-stroke engine enthusiasts win points for reliability, noise, fuel consumption, longevity before overhauls, and intangibles such as the way people feel when they hear a four-stroke rumble compared to a two-stroke whine. Cons Pilots looking for something different wont find it here (though thats precisely why others will like the Champion). Entry is very good with little obstruction. I'm in the process of building a gyroplane with a new 912is. Folding wings (3 minutes), towable on its own wheels, steerable tailwheel, four-point safety harness, Lexan windshield, instrument panel, adjustable seat, 5-inch main wheels with tubeless tires, 5-gallon wing tank with quick drain, Piper Cub-type main gear shock absorber, engine mount and universal engine adapter plate. Single-place light-sport aircraftyes, some will be offeredare additional candidates that may not go to four-stroke power. ? Like the Kolb designs, the Champion features a broad aft view that comes in handy in crowded conditions like airshows. You have allowed cookies to be placed on your computer. Taxi visibility; Steering; Turn radius; Shock absorption; Stance/Stability; Braking. hirth 3203 65 hp with weight near 503. how reliable are these if well maintained? Cons No brakes meant long landing roll-outs before I could turn off; also required planning ahead in taxi mode. It was manufactured for small european sports car half-shafts as early as the 1960's. This website uses cookies to manage authentication, navigation, and other functions. We have inventions (patents, applications) which improve four-stroke piston engine including small aircraft engines and very small RC drones as well as engines with turbocharger or supercharger. Still a lot more proven hours logged on Rotax products for aviation use than Yamaha. Open cockpit differentiates the Champion from either the Sky Raider or the Kitfox Lite. You are using an out of date browser. 503 UL - 34 kW. NICE STRAIGHT SET OF 8 ROTX 447 CYLINDER STUDS / BOLTS / RODS !!! [1][2] It is typically installed with an induction-pulse-driven diaphragm fuel pump to provide fuel pressure. Roll rate was approximately 1.5 seconds in 45-to-45 tests; faster than all but a few ultralights. ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) For a better experience, please enable JavaScript in your browser before proceeding. Matter of fact I am the only one who has flown this bee! Required fields are marked *. I only selected models with lower power and lighter weight to keep such powerplants in range of ultralights and light-sport aircraft. (2) Disconnect the control linkage. The dual-carburetor version uses Bing model 84 carburetors. So while i was taking apart my Rotax 447 engine, i messed up a bit. Rotax and other brands refined the two-stroke for aircraft use, and todays two-stroke powerplants deserve their popularity. Hey Dan! Among those larger aircraft which will qualify as light-sport aircraft, four-stroke engines are bound to reign supreme. Me and Angelo are going to fly the gyros before I load up the red one to take back here. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. With these wheels clamped on, the real wheels hang over the side. For a better experience, please enable JavaScript in your browser before proceeding. Don't ignore the rather tortured distribution system for Rotax aircraft engines. Mercedes is well aware of the aircraft use of their engine, and it has helped industry designers with the modifications. Power produced by this wide variety of engines runs from 27-100 hp, and the engine weights run from 85-150 pounds. When pulling Piston needle, i dropped some of the needles, from needle bearing. Pros Avid Aircraft brings a famous and respected name to the ultralight community. Their prices are not much better and they can't really show that they have been more reliable either. By using our website, you agree that we can place these types of cookies on your device. Good luck! These are complete engine packages that will be a cost-competitive alternative to the Rotax 503, 582, 912, 912S and 914 power-plants. They may use smaller four-strokes like the HKS, but they hardly need the power of the Rotax 912 or Jabiru 2200, nor their weight and cost. The Quiet Invasion [2] The modern 447 has a single breakerless, magneto capacitor-discharge ignition (CDI) system. Ok, I have been debating this question for months now and cannot make up my mind. MINI PANEL Tucked away in the slope of the nose cowl are the few instruments needed. Filed Under: Avid Aircraft, Champion, UF Pilot Report Tagged With: 3-Axis 1-Place, Your email address will not be published. Thank you. Another approach to the narrow trailer/wide gear issue is to make a couple of clamp-on auxiliary wheels to be attached to the main axle tube inboard of the real wheels. And can I use a smaller horsepower four stroke with a bigger prop than a higher horsepower two stroke with a smaller prop to get the same work? John. Overhead skylight and open aft cockpit helps ability to check for traffic before takeoff. Based on Avid manuals reviewed earlier, assembly instructions should be very good. 277 377 447 503 582 Rotax Cuyuna Voltage Regulator Rectifier Ultralight Aircraft, VERY NICE ROTX 447 FAN HOUSING !!! Personal Watercraft Ignition & Starting Systems, Other Motorcycle & Scooter Parts & Accessories, Amounts shown in italicized text are for items listed in currency other than U.S. dollars and are approximate conversions to U.S. dollars based upon Bloomberg's conversion rates. Anyway in these pics it had a 447 on it but it now has a 503 on it. Rotax 462 532 582 583 618 670 Engines Thermostat 222-012 Ultralight Aircraft, Rotax 447 377 Straight 7" Exhaust Manifold YPipe Header Ultralight Aircraft UL, 447 Rotax Aircraft Engine Piston RE Ring kit STD Bore, 447 Rotax Aircraft Engine Piston Ring kit, 447 Rotax Aircraft Engine Piston Top End Rebuild Kit 1st OS W bearings & Gaskets, 447 Rotax Aircraft Engine full overhaul gasket set late style Ultralight gaskets, GENUINE ROTAX TYPE 447 UL EDITION 07 1987 SPARE PARTS LIST, Rotax 377,447 or 503 Carburetor Socket Hovercraft Ultralight Qty 2 (pn 8502), Rotax Rotex 447 457 Piston rings ring NOS Open box item, Ski Doo Safari 447 Snowmobile CDI 70000-1340, 447 Rotax Aircraft Engine Piston Top End Rebuild Kit 2nd OS W bearings & Gaskets, 447 Rotax Aircraft Engine Piston Top End Rebuild Kit std W bearings & Gaskets, 447 Rotax Aircraft Engine Piston RE Ring kit O/S Bore 68.00 mm, Leave feedback about your eBay search experience - opens in new window or tab. and ROTAX factory in Gunskirchen, Austria. 4 watchers You can buy a 12 sheet of the same material from aircraft spruce for 15 bucks. User assumes all risk of use, and acknowledges by his use that he knows this engine is subject to sudden stoppageNever fly the aircraft equipped with this engine at locations, airspeeds, altitudes, or other circumstances from which a successful no-power landing cannot be made, after sudden engine stoppage. In recent years, the Rotax 912 has made many sales to trike pilots. Kudos for building alternative engines. Pros The Champion is ultrasimple, as it should be. This South African AeroTrike was flown around Mexico for 2000 miles by owner Rob Rollison. I guess what i am going to do is go with a 447, and keep my eye out for a good deal on a 503. 8 day delivery- best price I found. Powerful and responsive, the Champions mission can satisfy experienced ultralighters. Reconsider Cookies Quite open cockpit may be delightful in summer but too cold for winter use in many American locations. You might try Aircraft Spruce but yours is a very specific request. Powered parachutes have created two-stroke installations as clean and functional as any four-stroke. It may not display this or other websites correctly. Product Details Rotax 447 UL SCDI 40HP Aircraft Engine 2-stroke engine specially developed for recreational aircraft 2 cylinders, cooled by fan Piston ported intake Single capacitor discharge Ignition (SCDI) Single Bing carburetor Mikuni pulse driven diaphragm fuel pump Recoil or electric starter Available with various exhaust system configurations The Rotax 447 is a 41.6hp (31kW), inline 2-cylinder, two-stroke aircraft engine, built by BRP-Rotax GmbH & Co. KG of Austria for use in ultralight aircraft.[1][2]. STATOR / GENERATOR FLYWHEEL !!! The Rotax 912 is now widely used on higher-end trike models like this one from Cosmos of France. Two-stroke days are numberednot because of efficiencies, but because of ecological concerns and political decisions. REAR STRUTS The Avids have long since worked out a slick folding wing system, which relies on this aft-hinged strut attachment. Re: Using piston bearing, other than Rotax, To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. The Bailey mentioned in this article is a four-stroke engine on a very light trike. Number of bids and bid amounts may be slightly out of date. (3) Hold the controls out of the way while folding the wing aft. It may not display this or other websites correctly. Rotax 377 447 503 Engines Recoil Rewind Starting Starter Pulley Cup 852-412 UL. Aftermarket ROTAX MAG SIDE Starter for 447 503 532 582 Replace8 Rotax pn 995-430, Customs services and international tracking provided, GPL ELECTRIC STARTER MOTOR REPLACEMENT FOR ROTAX 447,503, 532,582,618 MOTORS, CDI Module for Rotax with Ducati fits 618, 582, 503, 447 and others PN 8200-D. 40 HP ROTAX 447 ENGINE WITH DUCATI IGNITION ! When you say you dropped themdo you mean lost them??? JavaScript is disabled. In my opinion the high Rotax parts cost is in part due to the liability of building aviation parts. With no brakes, I was ready to hit the kill switch, but it was a far enough reach that I had to loosen my right shoulder belt. NICE ULTRALIGHT AIRCRAFT MOTOR ! Youre mandated to spend money. Jabiru has larger engines for heavier kit aircraft, but its smallest, the 2200, is a good candidate for light-sport aircraft. Not reallythe older type where in a cage but the loose type are stronger, Questions about the Rotax describing how much 100LL needs to be added to automotive fuel, ROTAX Tech Talk: Troubleshooting the Rotax 912 ignition system, ROTAX Tech Talk: 912 Easy Start Circuitry, Rotax 912ULS powered Kitfox V Pre-Buy Inspection, ROTAX Tech Talk: Troubleshooting the Rotax 914 ignition system, Rotax-powered Kitfox V Pre-Buy Inspection, ROTAX Tech Talk: Troubleshooting the Rotax 912/914 ignition system, SI-912 i-002_SI-915 i-002 B.U.D.S. Something went wrong. Engines to replace the dominance of Rotax. I think you write excellent articles and they are very entertaining as well as being well written. The 447 did just fine, but we were having some trouble with it running too hot - not cause it was a 447, just cause THAT 447 was old and tired I guess. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. I am honored to be helpful to you. You are using an out of date browser. Given the volume and liability, it has to be expensive, Yamaha is not the company standing behind aviation use of their engine. Cons Significant adverse yaw (a by-product of very responsive ailerons). Given the volume and liability, it has to be expensive. Hi Jeff: YES! FAA Regulation Update Fall 2022. Few systems will distract you. New FI.R.M. The Pulsar was introduced in 2001, powered by an 80 hp (60 kW) Rotax 912UL four-stroke or 120 hp (89 kW) Jabiru 3300 powerplant, Continental or Lycoming engines, produced by Pulsar Aircraft. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) This page was last updated: 04-Mar 10:49. Reconsider Cookies Help! As a Harley Davidson dealer I dealt with this question a lot. Wandering, if an alternate is available. Thank you for all you do. Slipping is somewhat less potent than on aircraft with more side fuselage and doors. Weight, dimensions and CG calculations for Rotax 2 stroke engines pdf format. Pull starter might be challenging to find and operate during in-flight engine loss. Or how about that famous Rotax RUBBER DONUT? Engine stoppage can result in crash landings, forced landings or no power landings. The Rotax 447 features piston-ported, air-cooled cylinder heads and cylinders, utilizing either a fan or free air for cooling. Excellent suspension. In the important power-to-weight ratio, two-strokes are hard to beat. It flies beautifully and should thrill ultralight enthusiasts who prefer a more conventional aircraft feel. It seemed like a great engine; I was quite impressed. John. Ron, when are you coming up? Cessna and Piper pilots often dont understand ultralight designs and why light two-stroke engines are so necessary. The companies Ive identified offer varying degrees of support. Thread starter erkki67; Start date Oct 13, 2018; 1; 2; 3 . Addresses the questions: Will a buyer get what he/she expects to buy, and did the designer/builder achieve the chosen goal?. Many Choices When the four-cylinder, four-stroke Rotax 912 hit the market in 1989, few industry watchers predicted it would signal the end of the two-stroke engine. I have already viewed several of your videos. They do get sued. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. The rough running engine is caused partially by my improper use of the choke and the RPM being set to low. An optional High Altitude Compensation kit is available. Thank you very much. It was adapted for this use from the powered paraglider world. So Yamaha is definitely not competing with Rotax. Indiana. Its finances resemble nothing so much as those of an international drug cartel. There prices are not much better and they can't really show that they have been more reliable either. I believe I may have seen every ultralight video you have made, and most I have seen many times. and ROTAX factory in Gunskirchen, Austria. Aircraft equipped with this engine must only fly in DAYLIGHT VFR conditions. ROTAX 582 / 503 / 447 / 377 RECOIL PULL STARTER !!! As a Pilot I want to avoid problems in the air and if that means spending a little more for parts I am happy to do it. Ultralights have long been defined by their two-stroke engines. M O S A I C While checking online pricings for Needle Bearing 18*22*21,8 (832325), is like $52+ Shipping each, which is extremely expensive. So while i was taking apart my Rotax 447 engine, i messed up a bit. ROTAX 2-Stroke Fuel System - Part 1 912 Series. Hi John I am Deepak K from India I hope you help me We need more information about your vehicle to confirm fit. Lack of more side area may disturb some pilots (its way open out to the side). Vance Gyroplane CFI Staff member Joined Oct 30, 2003 Messages 17,727 Location In this library, you find technical documents like manuals and instructions, as well as service bulletins and service letters for your Rotax aircraft engine. Lubrication is by use of pre-mixed fuel and oil. Cancel, 2-stroke engine specially developed for recreational aircraft, Single capacitor discharge Ignition (SCDI), Available with various exhaust system configurations, Operates on a mix of automotive fuel with a minimum of 87 octane rating (Canadian standards) and super 2-stroke oil of API-TC classification, 50:1 ratio. Avid Aircraft has never indicated a lot of interest, sticking to their popular 2-place models and moving more in the direction of features like a Lycoming (general aviation) engine rather than downsizing. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, January 10, 2004 by Dan Johnson Leave a Comment. Excellent article Dan, Enjoyable low-level flyer with good energy retention and powerful controls. Climb; Glide; Sink; Cruise/stall/max speeds; Endurance; Range; Maneuverability. The dual-carburetor version uses Bing model 84 carburetors. The Rotax 447 gave strong climbs and solid cruises, although it can't be selected if you want to remain under Part 103. Your email address will not be published. Clean wing-fold design allows little cost to store; can transport short distances on its main gear. LEAN AND LIGHT The lightest Avid of them all, the new Champion is open and airy as well. Rotax 377 447 503 Engines Recoil Rewind Starting Starter Pulley Cup 852-412 UL, 447 Rotax Engine Crankshaft Connecting Rod Ultralight Aircraft Hovercraft 447 UL. Everything I've read points to corrosion with high alcohol content fuels and mine are running in the 7 - 8% range. My lazy bone dictated this approach instead of widening my existing 6' wide trailer. The BMW 1100S engine puts out 80- 100-hp depending on the developer. NICE STRAIGHT SET OF 8 ROTX 447 CYLINDER STUDS / BOLTS / RODS !!! (4) Smile for your friends I feel this is a good example of someone using aftermarket parts and blaming the manufacture because they don't work with the original manufactures parts. Hi, can you supply me with a propeller gear reducer for bmw 1200 engine But I don't see much hype regarding the 2702. Bombardier Recreational Products - Wikipedia, https://law.justia.com/cases/federal/district-courts/FSupp/814/679/1766084/, https://casetext.com/case/everett-v-brp-powertrain-gmbh-co, https://www.paed.uscourts.gov/documents/opinions/05D0302P.pdf, Mohawk Aero Celebrates 10th Anniversary 2022, Rotax Enhanced Annual and Service Class March 4 & 5, SilverLight Aviation offering Recon Experimental Amateur Built Airplane kits with accelerated Builder's Assist at factory. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. I went to the search bar and typed four stroke AND ultralight. Here is a link with it already typed-in for you. REAL PROVISION 8 ULTRALIGHT AIRCRAFT CASE NOT SNOWMOBILE. I can get them from a dozens of sources for under $50.00, but if I buy it as a ROTAX part it is $190.00 to $250.00, depending on the Rotax dealer source in the USA. 377 447 Rotax Engine Crankshaft & Engine Crankcase Assembly Ultralight Aircraft, ROTAX 447 CRANKCASE !!! I just recently posted a WARNING on my Mohawk Aero Corps (MAC) Facebook page "Yamaha Aircraft Engines" concerning ALL ROTAX GEARBOXES, for people who use RK400 clutches on them. Be transparent.. just dont claim theyre good cuz theyre cheap. I found a great deal on a used 503 and passed the deal onto Barry and he put it on the bee. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. NICE ULTRALIGHT AIRCRAFT MOTOR ! ROTAX 618 / 582 / 503 / 447 MAGNETO FLYWHEEL !!! Are there any four stroke options for powered paragliders? Learning how to start the Rotax 447. Even with this limitation, the World Directory of Leisure Aviation lists 26 companies that produce 30 engines offering 100 hp or less and generally weigh less than 150 pounds. 377 447 Rotax Complete Engine Fan Tower Housing Assem Ultralight Aircraft NICE, CDI Module for Rotax with Nippon Denso fits 503,447,377, 277 & others PN 8200-5, External Coil Rotax 377, 447, 503, 532, 582 for nipon CDI aftr mkt 8202-R2, NEW ROTAX Starter for 447 503 532 582 Light Aircraft Ultra Light *REPLACES GPL*, Rotax Ducati 447 503 582 Ignition Magneto Flywheel Trigger Wheel 996-826 996-821, 377 447 Rotax 90 Degree Exhaust Manifold YPipe Header With Gaskets UL Aircraft, Rotax 447 377 Engine Exhaust Manifold YPipe Header Elbow W/ Gaskets & Springs. NOTICE carburetor without calibration. Follow Us. I appreciate the work you do for the LSA and ultralight world more than you know! After all, the light, cheap (relatively) twin-cylinder engines had solid footing in very light aircraft (ultralights and homebuilts alike), and the 912 was still a very new idea for Rotax. a - Base carburetor for air-cooled engines with bowden cable choke. You do not have permissions to reply to this topic. Can make Part 103 (with smaller engine). 40 HP ROTAX 447 ENGINE WITH DUCATI IGNITION ! But despite the improvements, despite plentiful businesses to help you maintain your two-stroke engine, and despite a good performance record, two-strokes are still seen as inferior to four-strokes by many aviators. A 503 is more power than you will need for safe and enjoyable recreational flying. We removed these from our 1999 912UL. Opens in a new window or tab. I have a Aerolight 103 with a problem Vanguard engine; looking for a better replacement 4 cycle. GOOD CLEAN COOLING FAN FOR 447 ENGINE / MOTOR, Rotax 447 377 Engine Exhaust Manifold YPipe Header Elbow W/ Gaskets & Springs, 377 447 Rotax 90 Degree Exhaust Manifold YPipe Header With Gaskets UL Aircraft, Rotax 377 447 Engines Cylinder Head Crankcase Studs 8mm x 167mm 841-149 UL 447, Rotax Ultralight Aircraft Oil Injection Tank Reservoir Low Oil Warning Sensor, Rotax 503 582 447 618 Kawasaki Ultralight Aircraft Oil Injection Tank Reservoir. Very responsive steerable tailwheel. ROTAX 503 / 447 / 377 SINGLE CARB AIR INTAKE SILENCER !!! Adequate instrument panel space. [1][2], The manufacturer acknowledges the design limitations of this engine, warning pilots:[1], "This engine, by its design, is subject to sudden stoppage. Actually, there are none in flight and on the ground only the folding wing system needs attention to special detail. however i would like ideas about 2 other engines for a gyrobee. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. OPEN BACK Look aft in the cockpit. M O S A I C Rotax 447 power, torque and fuel consumption. The Rotax 447 gave strong climbs and solid cruises, although it cant be selected if you want to remain under Part 103. Customer Service Information Report (CSIR), ROTAX Tech Talk: Troubleshooting the Rotax 912 ignition system, ROTAX Tech Talk: 912 Easy Start Circuitry, Rotax 912ULS powered Kitfox V Pre-Buy Inspection, ROTAX Tech Talk: Troubleshooting the Rotax 914 ignition system, Rotax-powered Kitfox V Pre-Buy Inspection, ROTAX Tech Talk: Troubleshooting the Rotax 912/914 ignition system, SI-912 i-002_SI-915 i-002 B.U.D.S. Unless some company manufactures an engine to compete with Rotax, well there is no real competition there are simply alternative engines. Stout welded steel under painted fabric assures a long life. Flying in Rhode Island at 155 pounds you should definitely use a 447. Without cowl, speed performance will suffer. Every time I think I have found the answer to my gyrobee problem, someone gives me some really good reasons to go the other way than I was thinking. #1 I've been reading the spec sheets on both the Rotax 447 and the Hirth 2702 and the Hirth comes off with more HP and better torque figures. Many have already passed rigorous certifications in other countries, and the design platform has been proven for decades. Register today and take advantage of membership benefits. Good luck and thanks for visiting! Powerful and responsive, the Champions mission can satisfy experienced ultralighters.