on blacktop it ' only'took 25# to move it. I have my stock configuration of 80HP Rotax 912 UL with an Arplast 3 blade prop- not sure what the prop diameter is. View Profile View Forum Posts Private Message Senior Member Join Date May 2009 Location Goodyear, AZ Posts 1,742. or just test in the configuration you fly? Quietest...yes. By the time static thrust testing took place at 11am Saturday morning, warm temperatures had pushed the density altitude to 6,400 feet. You'll need to go with a wooden prop if you want to stay within the specs for the Polini gearbox. Rotax Powertrains . Marketing cookies come from external advertising companies and are used to collect information about the websites visited by the user. The Rotax 277 vibrates something fierce. The direct drive electric start VW installed weight is about 180 LBS from my experience, but you can shift some of the weight closer to the firewall by choosing alternate accessories (like dual magnetos driven off the back of the motor), which reduce the impact on the airframes CG (you can also use a light weight wood prop). My gyro is at another airport and I will test it later. I found this on the internet, so I don't know how accurate it is, but all weights are in lbs. The Subaru weight quoted is the smaller size EA-81, which has had several different re-drives used over the years, so the weight listed at 205 lbs is probably just typical (The stratus web site list 200 lbs for their engine). The fuel burn of the 3002/3003 will be slightly more than a 912, but not significantly. It was great low tech ingenuity. 11-12-2011, 11:34 AM #2. The thrust from the 3003 will leave a 912 in the dust. Here is an engine weight comparison. FW use the tail wheel or mains (with tricycle gear), like the other aircraft. http://www.utahrotorcraft.org/WR/Western_Rotorcraft_2013_07_hires.pdf. That's a lot of extra weight out in front of the noise, which affects both the total engine installation weight and the CG of the aircraft. Rotax 277, 58” PowerFin, 2-blade = 200.2 lbs Rotax 447, 68” Ivo, 2-blade = 300.6 lbs Rotax 503, 70” PowerFin, 3-blade = 400.7 lbs Continental A75, Warp Drive, 3-blade = 350.3 lbs. also the readings varied greatly with max rpms versus cruise.". Although static thrust does not tell the whole story, the resulting data does tell part of the story…plus this is great fun. How much does prop pitch play into the equation? Rotax 912 165 Includes 20 lbs radiator, et, CAM-100 225 Includes 20 lbs radiator, etc. @MontyStone showed one once he rigged up with a simple weight scale meter with a memory needle on it. In summary, I was very happy with the Rotaxs but did not expect a lot out of the A-75.Warp. Please inquire. The results (in pounds of thrust, top of page) include an estimate ("ISA") of equivalent thrust at sea level under standard conditions (15oC, barometer 29.92). I do mine by myself outside the aircraft with my hands on the throttle and near the switches. So many airports are noise sensitive. I Other engines can use a light weight (and cheapish) wood prop, which gives a lighter total installed weight and affects the aircraft CG less (but it's hard to beat metal for durability), If this is your first visit, be sure to The wieght figures are off the internet, so who knows how accurate they really are, but someone put a lot of work into finding these figures, so they are probably correct or close to it. There will be a cross-category Static Thrust Competition at: April 3-6, Bensen Days, 40th AnnualWauchula FlStatic thrust competition - Gyros, Trikes, PPCs, Airboats, PPCs, FW welcomehttp://www.bensendays.us.com http://www.bensendays.net. The installed weight of a 3002/3003 engine typically comes in at about 45 lbs less than a Rotax 912. We can go to 1,200 for any unlikely person fortunate enough to have that kind of thrust. I would think it also puts more stress on the engine mount, so your engine mount would need to be more hefty). i was surprised to find that it took 50# thrust on damp grass just to get my trike to roll (no eng). Our goal is always to maximize the fun and to minimize the weight. I'm in search of empirical data…and the “perfect ride.”. Number of cylinders 1 3 2 4. But the trade off is that you get exceptionally better performance. Looking forward to the results of this comp April 3-6. Hey good idea, the organizers just polled the forum for activities and comps. Productfinder Clear all filters. The compact and light weight design of Rotax aircraft engines has been developed by pilots for pilots for use on many kind of aircraft. (rebuilt) Horsepower: 40 Weight: 55 lbs Price: $2,850. (but really produces the power - that weight is also from the Stratus web site). check out the. Example - granted not a Stratus, but some of the NSI Subaru … It won't handle the inertia of a longer, heavier prop. I’m posted this to try to generate some interest for a Static Thrust Competition at B-Days.Typically you compete with others with the same engine…the props, carbs, re-drives and engine compression are the key variables. I always do mine on concrete or wood planks. This avoids any potential damage or rope slippage. Rotax 503 trade show display Type Piston aero-engine: National origin: Austria Manufacturer Rotax: Major applications: Quad City Challenger Blue Yonder EZ Flyer: Produced until 2011 A Rotax 503 mounted on a Flightstar II ultralight. The prototype Blue Yonder Twin Engine EZ Flyer is powered by two 503s in pusher configuration. Horsepower: 35 Weight: about 64 lbs Price: $2,090 complete Also available: Kawasaki 340, air cooled, 35 hp, New, $2,595 complete Used, $1,795 complete A lightweight (only 58 lbs) version of either engine is also available. think it's also important to note that the C-85's are often fitted with a metal prop. Monty replied by email to me: "hi xc, the scale was a game scale, $20 on internet, i made the 'tell-tale out of scraps. Rotax aircraft engines stand for outstanding performance, reliability, low fuel consumption and reduced emissions. Mine won't win that’s for sure. Re: Here is an engine weight comparison: Rotax, Continental + others Major Skeptic here. Rotax 582 95 Includes 20 lbs radiator, etc. These cookies are essential for the operation of the site. To further improve our offer and our website, we collect anonymous data for statistics and analysis. Continental O-300 277 Lycoming O-320-A 243 Lycoming O-320-D 253 Franklin 335 320. Rotax 618 136 Includes 20 lbs radiator, etc. Here is an engine weight comparison: Rotax, Continental + others. Prices include a fan or enhanced free-air cooling: Make: Kawasaki 440-A, air-cooled Like New! It was tearing up my airframe. I've been shopping for a better prop for a while. I see the A-65 is 173 lbs, whereas the electric start C-85 is 207 lbs, which sounds about right. Can't wait to see the results. 2-Stroke; 4-Stroke; 1; 3; 2; 4; Kart; Marine; Offroad; Snow; Aircraft; Onroad; Other; None; Sequential / Semi-automatic; CVT (Continously Variable Transmission) Fix; ACE (Advanced Combustion Efficiency) Turbocharged; E-TEC; Range Extender; Engine family 2-Stroke 4-Stroke. Is there such thing as an affordable one? In preparation, I Static Thrust tested my four trikes today. you know what else would be interesting would be to get a sound meter to award the quietest thrust winner also. I heard some really wonderful things about the Jabira, and I bet they would make a good light and fuel efficient engine choice for the model 3 and 4s, but have not heard of anyone using one with the fox or avid. Using these cookies, we can, for example, determine the number of visitors and the effect of certain pages on our website and optimize our content. It’s expected to see 200lbs to 900lbs. Not only that, but it also comes in at about half the cost! Just looking around on the googlesphere and WOW Those dynamo meters are some spendy beasts. Also note the dynamometer has a memory needle so you never need to get beside or behind the prop. Do you re-pitch for the static comp? HighWing. Never had a problem. The pilot can be in or out of the aircraft, whichever is easier to manipulate the throttle and switches. Here are my results: Rotax 277, 58” PowerFin, 2-blade = 200.2 lbsRotax 447, 68” Ivo, 2-blade = 300.6 lbsRotax 503, 70” PowerFin, 3-blade = 400.7 lbsContinental A75, Warp Drive, 3-blade = 350.3 lbs. We will use a “Y” bridle with each rope end making two wraps at or near each axle and use a bowline knot. The re-drive can suck the HP down though, I would guess 80 HP at the prop would be typical. Wow, this is cool. ;). Let us know what happens CBurg. Hope some electric trikes / planes show up to the comp!! The larger and more popular (now days anyway) Subaru engine is the 2.2 Liter, which weights a whopping 315 lbs !!!!! The 912 turbo weight, I guess, is without accessories, thus it show lighter that the standard 912. FLYROTAXROTAX KARTRACELIKENEVERBEFOREROTAX ACADEMYRIC, © 2020 BRP-Rotax GmbH & Co KG Legal Notice Privacy Policy Cookie Details Imprint Links Contact. The VWs do not require a large battery to start, the ULTRASTART RED BATTERY weighs 4.4 lbs and will start the engine just fine (but not much power is left in reserve if you loose the generator). The one weak point on the Polini is the gearbox. In summary, I was very happy with the Rotaxs but did not expect a lot out of the A … it works good. Six participants submitted their machines for testing. It's designed for the short light weight props on paragliders. I test them as I fly them. Plus obstructions in the back have an affect...free vortex in the flow field, etc.... essentially OGE (Out of Ground Effect) compression type phenomenon.
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