Rotax 277 vs hirth f33. I'm planning on using a Rotax 277.
Rotax 277 vs hirth f33. I read that TBO is around a 1000 hours, compared to 300 on a Rotax 447, plus i've read that all 2 strokes are prone to stop running, especially during idle. 440: 30 35 35: 2. Brakes, fiberglass wingtips and wheelpants are optional. Chapters: Napier Nomad, Rolls-Royce Crecy, Rotax 503, Rotax 582, Rotax 447, Zanzottera MZ 201, Hirth 3502, 2si 460, Hirth F-30, Hirth 3202, Hirth 2704, Zanzottera MZ 34, Hirth 2702, 2si 215, Cuyuna 430, 2si 690, Hirth 3701, 2si 540, KFM 107, Konig SC 430 Engines: Rotax TOC 20-hp 4-cyc w/RPM of 2000 at blades, recommended 3/50” (Adam Gibson) Rotax 277: 26 HP <> 6250 Max Rpm Reduction RATIO MAX PROP RPM (with Eng RPM: 6250) Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Maximum possible diameter with this model is 69". Aug 30, 2011 · Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Build from plans, short kit or omplete kit. So far the F33 would be my 1st choice in a 2 stroke, should i go that way (2 stroke), just would like any and all information on these engines, the good and bad of them. Thirty-five had been completed and flown by the end of 2011. Watch the EIS to get a sense for the vibration: Hirth F-33 with recoil & Electric start & 4V Belt Drive for sale. *Increase pitch by one degree for every one inch decrease in diameter. It was covered with fabric or Dacron. Manufacturer claimed construction time 300-350 hours. [3] [5] [6] Dec 30, 2020 · Lower power Hirth engines are air-cooled; larger engines are water-cooled. "This combination flies the Gull 2000 quite well, with very little vibration. The F-33 was intended to fill the niche previously occupied by the now out-of-production 28 hp (21 kW) Rotax 277. Those who want to stay within Part 103’s limits but yearn for more power or twin cylinders may use the 2si or Engine options are 40 hp (30 kW) Rotax 447, 50 hp (37 kW) Rotax 503, or 28 hp (21 kW) Hirth F-33 or 35 hp (26 kW) 2SI 460-35. I used to be adverse to belt drives as well, based on my experience with them back in the 1980's. Rotax 503 85 Great Plains VW 1600CC 160 Hirth F23-EP2 70 Jabira 119 PZL 2A-120 129 Rotax 582 95 Includes 20 lbs radiator, etc. The airplane was designed for a Rotax 277 that is about 20lbs heavier than the F33. The Polini is smooth as silk, due to a combination of the counter rotating balance shaft and the clutch that disengages the prop at idle. Properly cared for, the Max-103 will give you decades of flying enjoyment. S. May 8, 2019 · Powerplants fitted to the series ranged from a 10 kw (12 hp) McCulloch, Cayuna 430, up to the Rotax 447. The F-33 uses free air cooling, dual capacitor discharge ignition and reed valve induction, with a single Bing 34mm slide or optional diaphragm type carburetor. My friend's Zing is 116 kG (256 US pounds) and the Cloudster is 111 kG (245 US pounds). The Rotax 277 is a 26 hp (19 kW), single-cylinder, two-stroke aircraft engine, that was built by BRP-Rotax GmbH & Co. The CA-2 was also intended to be one of the lowest cost ways of obtaining an ultralight aircraft. It was tearing up my airframe. Here’s a Youtube video of an Aerolite 103 running, with sound and all. $2400 labor + parts. 58, this design works well on Rotax 447's through Rotax 618 as well as the Hirth engines that fall between 40 and 80 horsepower. Since the Rotax 277 is no longer in production, the 25 hp (19 kW) Hirth F-33 is specified along with the 40 hp (30 kW) Rotax 447 and 50 hp (37 kW) Rotax 503 engines. 58 gearbox use a 60x28 wooden prop. Hirth engines are designed specifically for aircraft use. Designed for 28hp engines such as the Rotax 277 or Hirth F-33. Setting. First flew in November 1993. My T-Bird I is one of the Heaviest Tube & Fabric Planes and with a 447 UL weighs 280 lbs, it just makes Part 103 with a Rotax 277 UL, 28 hp (65 lbs). Plus the Hirth has dual ignition. My other choice was the Hirth f-33 which from what I've read has really bad vibration problems, the reason I'm going for the Rotax. 2:1 ETLB Squawk Forums › Building and Flying Related Boards › miniMax, Hi-Max, and AirBike General Discussions › Rotax 277 vs Hirth F-33 Moderators: Administrator Group Users Browsing Forum A new Hirth F-33 was installed and that was the configuration it flew as in Florida. Decreasing pitch will increase RPM. [9] 1030R MAX-103 Single seat, open cockpit, mid-wing aircraft with the 28 hp (21 kW) Rotax 277. The ribs were of foam. Rotax One fact that nobody has mentioned yet is that TBO doesn't mean didly doo unless the engine has a proven record for making and exceeding this TBO. To order an aircraft plan and designs , go to this link. By 1987, Hirth were a quiet little shed across the valley from a huge outfit called Bombadier (Rotax), and had not much of a reputation in ultralight use. May 26, 2021 · Rotax 447 - 2-cylinder; Rotax 503 - 2-cylinder; So all of these are either 1 or 2-cylinder 2-stroke engines. Hirth knows that in order for a 2-cycle engine to perform properly in aircraft use, peak power and peak torque have to be achieved at lower rpm's. Recreational Power Engineering, Hirth F-33, Hirth F33, 50 horsepower, 50hp, aircraft engines, mro, 2-cycle engines, Blue Max 2-cycle oil, propellers, parts and service for Hirth engines The Rotax 277 vibrates something fierce. The Woodhopper is very light, only 68 kG (150 US pounds). - Ed Fisher Hirth Aircraft Engines for sale. 95 octane (RON) Mixture 1:80-100 with BLUEMAX 2-stroke-oil, fuel min. Chapters: Napier Nomad, Rolls-Royce Crecy, Rotax 503, Rotax 582, Rotax 447, Zanzottera MZ 201, Hirth 3502, 2si 460, Hirth F-30, Hirth 3202, Hirth 2704, Zanzottera MZ 34, Hirth 2702, 2si 215, Cuyuna 430, 2si 690, Hirth 3701, 2si 540, KFM 107, Konig SC 430 Engines: Rotax TOC 20-hp 4-cyc w/RPM of 2000 at blades, recommended 3/50” (Adam Gibson) Rotax 277: 26 HP <> 6250 Max Rpm Reduction RATIO MAX PROP RPM (with Eng RPM: 6250) Jan 14, 2014 · Hirth - back in 1917, Hirth were working on contra-rotating rotarys (from memory), with astonishing power to weight ratios etc - real innovators in the aero engine field. Aircraft Engine HP Reduction Prop Diameter Pitch; CCS Hawk: Cuyuna 430 Cuyuna UL II-02 KAW. Great Plains VW 2180CC 165 Franklin 225 230 Limbach L 2000 155 Rotax 912 165 Includes 20 lbs radiator, et May 8, 2019 · Engines which could be installed included the 21 kw (28 hp) Rotax 277 and the 19 kw (25 hp) Hirth F-33 but aircraft built in the American amateur-built category have been completed with 30 kw (40 hp) Rotax 447 or 37 kw (50 hp) Rotax 503 engines. Darryl describes the 277 as “half a 503,” an apt enough label that I’d never heard before. <br><br>Rotax took the conservative approach and started with a low published TBO for their 912/914 lines of products, and raised it as they gained experience. Hirth F33 28 2. The 277 has a single Bosch flywheel magneto generator 12 volt ignition system and is equipped with a 36 mm Bing double float carburetor, with either a hand lever or cable choke. $900-$1100 labor + parts. Recommended Ultra-Prop Combinations. B. **A change in pitch of one degree is worth about 200-300 change in engine RPM. However the H-3 is underpowered with this engine and most have been equipped with heavier engines of higher output, such as the 40 hp (30 kW) Rotax Dec 18, 2021 · If you can afford the weight and the CG works out, the 2 cylinder Hirth looks like a fantastic option. Hirth knows that in order for a 2 cycle engine to perform properly in aircraft use, peak power and peak torque have to be achieved at lower RPMs. " Engine options are 40 hp (30 kW) Rotax 447, 50 hp (37 kW) Rotax 503, or 28 hp (21 kW) Hirth F-33 or 35 hp (26 kW) 2SI 460-35. , weighing in at 249 lbs complete with wheel pants. 5:1 103 59" 10 or 11 Hirth F33 28 2. 6 Rotax 503, 70” PowerFin, 3-blade = 400. Complete assembly kit includes everything except engine, instruments and paint. The German-built Hirth F-33 is still a two-cycle engine and a single cylinder as well, but there is no ignoring the weight-to-power advantage. altered to be used in aircraft. Mar 26, 2005 · I suggest you consider the Rotax 503. Nov 26, 2021 · It purports to be buildable as a 15' 6" long, 30' wing span, 240 pound empty 500 pound gross, one-seat Cub replica designed to be powered with a 25 hp Rotax 277. 3 In summary, I was very happy with the Rotaxs but did not expect a lot out of the A-75/Warp. Cooling: air Ignition : CDI Propeller: Wollner, DIA. Chapters: Napier Nomad, Rolls-Royce Crecy, Rotax 503, Rotax 582, Rotax 447, Zanzottera MZ 201, Hirth 3502, 2si 460, Hirth F-30, Hirth 3202, Hirth 2704, Zanzottera MZ 34, Hirth 2702, 2si 215, Cuyuna 430, 2si 690, Hirth 3701, 2si 540, KFM 107, K nig SC 430 Designed specifically for powered parachutes as a three blade 64" on a Rotax 582/2. O. <br><br>Hirth, on the other hand, is doing the just opposite by giving Feb 16, 2004 · Rotax 277 engine to stay within FAA’s Part 103 weight definitions. Rotax & Hirth 2-cycles approx. These goals were met and the resulting aircraft has an empty weight of 250 lb (113 kg), when equipped with a 28 hp (21 kW) Rotax 277 Mixture 1:50, 2-stroke-oil, fuel min. And you'll have the deep sense of pride knowing you built this fine aircraft yourself. with the Hirth. May 31, 2012 · Rotax 277, 58” PowerFin, 2-blade = 200. 912, 914 series approx. Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Average USA Pilot Weight falls between 180 lbs to 225 lbs. However, it was built for a Rotax 447 (CCW rotation viewed from the cockpit) and since Hirth has a belt drive, provided the engine crank spins in the same direction, I am in deep trouble and unable to use said propeller. Yes it costs more, but it is a very popular and proven engine and the additional power will really make flying your gyro more fun and safer. The F33 is light, maybe too light, need to be careful that you don't end up tail heavy. Provide Brand New Rotax 912 ULS DCDI 100HP Aircraft Engine with Interantional Warranty. Rotax 277: The 277 Rotax engine is one of the most trouble free used in ultralight aircraft application. The use of the 28 hp (21 kW) Rotax 277, or the similar weight and power Hirth F-33, allows the aircraft to fit into the US ultralight category if weight is carefully controlled during construction. " To comply with the ultralight aircraft weight limit in the United States it is necessary to use a light weight single cylinder, two stroke engine such as the Rotax 277, or Hirth F 30. They are going to sound a lot like a lawnmower, sorry. The Rotax 277 vibrates something fierce. Engines: Rotax TOC 20-hp 4-cyc w/RPM of 2000 at blades, recommended 3/50” (Adam Gibson) Rotax 277: 26 HP <> 6250 Max Rpm Reduction RATIO MAX PROP RPM (with Eng RPM: 6250) Dec 2, 2013 · An article in Light Sport and Ultralight Flying magazine explains why the engines were discontinued: “Rotax stopped producing the 447 and 503 because the molds for the engines needed to be redone,†explains Canadian Rotax distributor Dave Loveman. Even with electric start, the Polini is lighter than the 277. 58:1 gear 2. This is the propeller being sold as standard equipment on 6 of the top 7 ppc's. Anyone here running an F-33 on their Minimax? If so, how has it performed for you? Also, anyone operated both the 277 and F-33 for comparison? Performance, reliability, smoothness? Jun 24, 2017 · According to Dandar, Hirth’s specific Hirth engine design features are what make it more reliable: chromoly crank, Nikasil cylinders and special piston porting, features Dandar says “really add up to high reliability”. For those wanting more performance in the experimental category the Zipster is capable of handling the Rotax 503 or equivalent Hirth engines. Lubrication is pre-mixed fuel and oil. Includes written warranty, manufacturers specification inspection, de-carbon, fuel system, reduction unit & exhaust system & A&P log Entry. We use Viton crank shaft seals & O-Rings for Rotax & Hirth that Never leak! Double your Rotax 2-cycle T. Hirth F-33 with recoil & Electric start & Brand New Hirth F-33 with recoil & Electric start & 4V Belt Drive with Warranty To comply with the ultralight aircraft weight limit in the United States it is necessary to use a light weight single cylinder, two stroke engine such as the Rotax 277, or Hirth F 30. 95 octane When equipped with the Hirth F 33 engine the Zipster is a legal part 103 ultralight in the U. The F33 is considerably lighter than the 277 and also has a really slick optional electric start setup. Still in production. The Hirth 33 is a tad lighter with the same output. Rotax Hirth engines are designed specifically for aircraft use. May 21, 2023 · After selling the Hirth and relocating to South Carolina, the Skylite was re-fitted with a Rotax 277, as it had originally. 1,25 m, two blade fixed, wood Jun 19, 2016 · The plans for the 202 seem to be silent as far as engine and the drive system, other than advertising buying a Hirth from FFP, so I'm trying to figure out what I need for my aircraft. Standard engine was the 28 hp (21 kW) Rotax 277 and then later the 28 hp (21 kW) Hirth F-33. 4:1: 103P: 59" 14 deg cruise or 13 deg climb: Eipper MX II Brand New Hirth F-33 with recoil & Electric start & 4V Belt Drive with Warranty Oct 4, 2024 · Development. “Before spending the resources necessary to do that, they asked dealers/distributors to give a projection of sales they expected The most-reported problem is the availability of parts, service, and reliable troubleshooting information for the Hirth engines. 5:1 103 52" 17 or 18 Rotax 277 Rotax 377 Rotax 277 Rotax 503 Rotax 477 26 35 28 48 38 2. Continental A-65 173 Limbach L 1800 154 Limbach L 1700 161 Rotax 618 136 Includes 20 lbs radiator, etc. Please send us an email on the form below. Today old #1 is approaching 600 hrs flying time, and is enjoying life in sunny South Carolina. Because Hirth engines are manufactured in limited, noncontinuous runs, there can be a four- to six-week lead time when ordering, so planning ahead is a must. Some times you need extra power to gain altitude (the old "down wind turn", to miss wires, etc. Air-Bike LS Simple, light and modern 2 stroke engine from proven manufacturer suitable for pilots up to 90 kg. Warranty terms from RPE are good and include prepaid shipping when returning an engine for service. Some buyers are likely to choose the Rotax 503 for its extra oomph. 2 lbs Rotax 447, 68” Ivo, 2-blade = 300. Its main reported problems when used on the Challenger are Design Status Kit Price Cruise Speed Build Time Useful Load Compare; Ultimate 10-100 Oct 23, 2020 · The Rotax 277 UL came out in 1978, is the smallest Engine I seen put on a T-Bird. ). Mar 26, 2005 · 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. After selling the Hirth and relocating to South Carolina, the Skylite was re-fitted with a Rotax 277, as it had originally. It’s a repudiation to the claim heard in the 1990s that it’s too hard to build a legal-weight, fi xed-wing ultralight with full three-axis controls. Early versions of the FP-505 were equipped with the 28 hp (21 kW) Rotax 277, and the aircraft reportedly flies well on that minimum power. " Mark has about 35 hours on the engine, belt drive, and prop combination and indicates the unit performs very similar to the Rotax 277, "but a lot smoother, with phenomenal fuel economy, the Gull 2000 can fly along at cruise with as little as 3800 rpm. Single seat, open cockpit, mid-wing aircraft with the 28 hp (21 kW) Hirth F-33 engine. Generic. More importantly the Hirth turns in the "correct" direction so the door doesn't end up on the "wrong" side of the airplane. Oct 22, 2022 · Hi everyone, In a process of getting a new Hirth F33 engine I am left with a beautiful 58x36 2 blade hand crafted propeller. Got a question about your products. The extra cost for the fuel injected version still looks like a dollar store bargain compared to what a new Rotax costs in the 2 seaters that everybody is building. North of $4500. Nov 9, 2003 · Re: Hirth Vs. Most 277's with a 2. I have a couple potential sources for a 19 kG (Hirth) or 25 kG (Rotax) one cylinder engine. Don't add anything behind the CG like a BRS or strobe. Under any circumstances I will be using the Rotax since the Gyrobee was designed with the 447 in mind. I don't have any experience with the F33, but if the torque and hp is about the same at the same rpm and reduction ratio, the same prop should work. Thanks in advance, The Rotax 277 features a single piston ported, air-cooled cylinder head and cylinder, utilizing either a fan or free air for cooling. 7 Continental A75, Warp Drive, 3-blade – 350. An Ultraprop with 3 blades at 56" and 12-13 degree pitch blocks works well too. ***Other lower reduction ratios are available. At idle, the F33 vibrates horribly, smooths out from about 3000 RPM and up. I'm planning on using a Rotax 277. Increasing pitch will decrease RPM. The acceptable power range is 28 to 53 hp (21 to 40 kW) . The Skypup was an advanced design produced in the 1980s with a cantilever wing and foam with a wood spar cap and wing spars. First flight 1993, out of production, replaced by the 1030F. But I don't see much hype regarding the 2702. The F-33 uses free air cooling, dual capacitor discharge ignition and reed valve induction, with a single Bing 34mm slide or optional diaphragm type carburetor. Not sure which engine, but it looks like the Hirth F33 to me (1-cylinder). It's pricey, though. It had a D-cell leading-edge wrapped in plywood. KG of Austria for use in ultralight aircraft. . FAR Part 103 legal, no pilot's license required to fly. Pages: 28. Hirth does not make snowmobile, water craft, or car engines and then try to modify them for aircraft applications. I've been shopping for a better prop for a while. (See "Hirth vs Rotax" in the Buzzword Section) ROTAX. Air-Bike LS The design goals of the CA-2 described a plans-built aircraft for the US FAR 103 Ultralight Vehicles category, including a maximum 254 lb (115 kg) empty weight. The Hirth F33 is another good option. ebuyw bzag lgpya msf ytcifcp faa nyp sopjcl nup qlcl