They were created primarily to be a drop in replacement for the 582. Kohler k91, k141, k161, k181, k241, k301, k321 and. Advances such as the nikasil process, use of hypereutectic alloys, exhaust port design and highstrength chromemoly steel crankshafts have made this new breed of engines vastly. User manuals, hirth engine operating guides and service manuals. All 3d models polygonal only cad only free only sort by. Hirth 3503 water cooled 2 cycle 70hp inline engine 3503.
The cylinders consist of an aluminium alloy with a nikasil coated running surface that is highly resistant to wear. Basically a 3003 is the 3002 80hp engine equiped with high performance cylinders. Both engines have the same bore, stroke and compression ratio as the threecylinder inline liquidcooled hirth 3701 and the bore, stroke, compression ratio and displacement of the twincylinder hirth 2704 and hirth. This is the same engine that has been successfully marketed to the global sport aviation market and has been specifically upgraded for the demanding requirements of helicopter applications. Hirth 3503 70 horsepower water cooled aircraft engine recreational power.
Dec 26, 2019 hirths wellrespected line of dedicated twostroke aviation engines is topped by its 100hp threecylinder. Some months ago my father bought a quad city challenger clipped wings with just 35 hours of flight in both engine and airframe. Pdf converter convert to and from pdf files online free. Hirth engines is known around the world for unmatched engineering solutions, industry leading technology and innovation. Hirth snowmobile parts hirth snowmobile engine parts.
The hirth 3202 and 3203 are a family of inline twin cylinder, two stroke, carburetted aircraft engines, with optional fuel injection, designed for use on ultralight aircraft, especially two seat ultralight trainers, gyrocopters and small homebuilts. Hirths wellrespected line of dedicated twostroke aviation engines is topped by its 100hp threecylinder. Equipped with the popular schempp hirth turbo system sustainer engine, more than 150 discus bt have been built. The hirth 3502, 60 hp and the 3503, 70 hp are liquid cooled versions of the 3202 and 3203. The 3503 produces 70hp at 6500 rpm while building an impressive torque of 57 ft lbs. It will most likely will need new rings, gaskets, and seals. What would be nice is to see what size throttle bodies they used on this hirth efi. The aircooled 4201 engine is a reed valve intake 2stroke boxer engine with electronic fuel injection efi and advanced closed loop fuel control, and can bus or rs485 interface for easy communication with the uav flight computer. We have many more engines available than we can list below. I have a f33 as engine30hp with hirths exhaust, i used it as an engine of my paramotor, no reduction, directly drive proper diameter 80cm,f33 as weigts 12. Jim, if you go in with the expectation that the hirth engine will last h, you sure to be disappointed. The motor was installed on a freebird experimental that crashed on its maiden test flight.
If the hirth is able to run hotter it just means you are going to due more damage when it finally goes. Hirth engines have been produced since the beginning of powered flight and our engineering excellence continues with. Hirth 210r manuals manuals and user guides for hirth 210r. Comment on hirth f30 110hp engine showing 143 of 43 messages. 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. They share the same crankshaft, pistons, and the same bore and stroke. Hirth motor 500 a aircraft engine handbook manual german language. The engine did get some scrapes and dents as seen in the following pictures, but just a few, and they are. We have the best prices on the net for hirth snowmobile engine parts after shipping and handling. I do have pic of the engine id tag for more information.
There is no manual fuel injection made for these 2 strokes used on planes that i know of, but one could be maybe made. I would look at the old crower fuel injection for racing. This item is sold for historical and reference only. Hirth is supplying their 3503 efi engine which is a 625cc water cooled inline 2stroke engine with electronic fuel injection efi producing 60 hp 44 kw.
These are either original or copies of manuals and blueprints used when these aircraft were in active duty, now transferred into electronic format. Hirth aircraft engines, built in germany, utilize some of the worlds most advanced powerplant technology in their new twostroke engine designs. The selflaunching variant discus bm was only built in very small numbers, but turned out to be an important proof of concept for later engine concepts that also kept the engine remaining in the fuselage. The cylinders are mounted onto the crankcase by stud bolts, discs and hexagon nuts. Again what difference does it make what the cht limits are the rotax is suppose to run as are hirth engines at 350 egt. Hirth engines are designed specifically for aircraft use. Operating in an rpm range 1500 rpm higher than the 60hp 3502 results in much more thrust at full power for vehicles requiring more climb capability than cruise power as the 3502 is designed for. Hirth aircraft engine now available in high torque, low rpm. They use the same bolt pattern on the crankcase and can therefore use the same mount, as well as. If you find documents on the 54r, you may find information referring to a 54r1, 54r2, 54r3 or a 54r4. With nearly l hp to every pound the 3003 has one of the highest power to weight ratios available. Agauge that we recommend on all hirth two stroke engines is the westach exhaust gas temperature gauge egt as in figure 3. Hirth 3503 water cooled 2 cycle 70hp inline engine 3503 special design high torquelow rpm fuel efficient engine model.
Hirth develops new uav engine unmanned vehicles shephard. The 3502 was developed from the 3503 as a derated version and produces 60 hp 45 kw, in comparison to the 3503 s 70 hp 52 kw. I think the primary reason that hirth might have a tainted reputation in the rotorcraft industry is because of a problem the engine had over ten years ago, explained dandar. Hirth does not make snowmobile, water craft, or car engines and then try to modify them for aircraft applications. Hirth 3503 70 horsepower water cooled aircraft engine. Hirth 2705 on a challenger 2 hi everyone, is there anybody out there that has or as flown a challenger2 with the hirth 2705 engine as i cant find any info on the hirth engine 2705 maybe you can help. Hirth motors 3503 efi engine flying in saab skeldar v200. Carburetion is standard, for example, but fuel injection is optional, as shown here. Hirth knows that in order for a 2 cycle engine to perform properly in aircraft use, peak power and peak torque have to. Unless they offer some kind of unlimited warranty for that time, its just a number. At hirth we continually develop stateoftheart technology applied to the proven twostroke principle.
Like all hirths, it can be optioned into a wide range of configurations. Name az name za newest oldest polys hilo polys lohi rating per page. External ignition coil sachskohlerbserotaxhirthdeere. Choose your specific model by selecting it from the above menu, or browse below. Data from recreational power engineering general characteristics type. This gauge is a reliable measurement tool that measures the exhaust gases as they. The 3502 was developed from the 3503 as a derated version and produces 60 hp 45 kw, in comparison to the 3503s 70 hp 52 kw. Recreational power engineering hirth engines tiffin, ohio. Recreational power engineering hirth engines tiffin. Hirth motors has launched a new 15hp 4201 engine for the unmanned aerial vehicle uav market, the company announced on 11 january. Hirth engines welcome to the home of twostroke engines.
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