10lb Pulsejet Pulse Jet Engine RC Turbine Alternative

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10 Lb Thrust Beck Technologies Thermojet Valveless Pulsejet Engine - All TIG Welded Stainless Steel Only 2 left! This will likely be the last batch until spring. MADE FROM 321 AEROSPACE GRADE TITANIUM STABILIZED STAINLESS STEEL! This auction is for a brand new 10 LB thrust Stainless Steel Thermojet style valveless pulsejet engine, with duel intake stainless fuel injector, spark plug, and a copy of our Pulsejet CD with tons of pictures, tutorial videos, instructions, and plans to build your own engines. The engines are in stock and will ship same or next business day from receiving a cleared payment. This isnt a cheap scrap metal engine or malformed imitation. Our engines are precision made with special dies and forms to ensure that all engines are extremely high quality and are precisely to the right size. Why buy junk, when you can buy the same engines used by numerous RC builders, research labs , and universities around the world. A valveless pulsejet is a type of jet engine with zero moving parts, and that produces thrust by burning fuel in pulses. Owning a pulsejet is a great way to get into hobby jet propulsion without spending $3000 or more on a low end turbine system. The engine is made from 20 gauge 321 Aerospace grade titanium stabilized stainless steel, and is fully TIG welded so that it is completely leak free. 32 1 grade is superior to other grades of stainless such as 304, or 316, and can handle high temperatures even better. This is not a leaky spot welded junk engine that you may see here on ebay from time to time, or any of the other poorly constructed scrap metal engine imitations. Unlike the notorious spot welded thermojets being sold on ebay, this engine is rock solid and will not leak fuel / compression / exhaust and can be run over a very large throttle range, because of the unique characteristics of the engine, and its leak free construction, it can be throttled down to well below 5% max thrust. It will "self start" and you can throttle it down to a very low idle so that it is quieter than a lawn mower, then instantly crank it up to max throttle for ground shaking power! The engine is brand new, not run at all. It will stay just as shiny in the picture until it is run for a while and the surface forms a protective oxide layer. Even though the engine is not run, its built to exact dimensions and guaranteed to run. Its 20 gauge wall thickness means that it is light, but still plenty strong for extended static test runs without cooling air. The engine is 37" long, about 38" with the spark plug in place, and weighs in at 3.75 lbs. The engine has a CM-6 size spark plug. The spark plug is not essential for starting, by using a small hand held torch the engine can be lit by holding a flame at the intake while turning on the fuel, but for instant reliable self starting you can also use a spark ignition system, giving you more options. The Thermojet is a very interesting design. It has two intakes, and a fuel injector going into each intake. With propane as the fuel source, you simply need to provide a way to ignite the fuel for the engine to start. This behavior is called "self starting". The force of the fuel flowing out of the injectors pulls in additional air and mixes it in the combustion chamber, when this mixture ignites, the engine creates a pulse of thrust, and it is enough to start the repeating cycle of taking in fuel and air, burning the fuel air mixture, and expelling it out the engine at high speed. Most pulsejet designs require some way to blow air into the engine in order to create the proper fuel air mixture in order for it to ignite and self sustain, typically air compressors, shop vacs, or leaf blowers. This adds another level of complexity to starting an engine, but this 10 lb thrust thermojet is self starting, so the starting procedure is extremely simple. Below is a starting tutorial video, the engine is the exact same design, built with the same techniques and welding jigs, to the same dimensions. ... read more

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