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Sachs twins - 100 cc (6.4 CI) and 140 cc(8.4 CI) gasoline engines |
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YS 91 Four stroke. It weighs 790 grams (1.75 lbs). According to the documentation, the maximum propeller size is a 14X10-14. It is mounted in a P51 Mustang with a 14.5X11 four bladed propeller. Rated engine speed is 2000 - 13,000 RPM. More 4 stroke engines and information |
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This is the venerable Zenoah G62. Many of the IMAA scale models are powered by this 4.5 HP gasoline model engine. When the price was around $350.00 (US) a few years ago, this engine was quite the bargain. It will spin a 20X10 prop at 9000 RPM! (in the air with a tuned pipe). More normal engine RPM would be in the 7200 RPM range (Static on the ground). |
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This is the JETX engine. While this is definitely not an R/C engine (at least it doesn't have a throttle), nonetheless it is a really neat and unique engine. It is advertised as the smallest jet engine and recently is available again. This small engine is used to power small free flight models into the air. A small jet glider is in the plans. Might even add a really light R/C control maybe two or three channels... |
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This is the Russian built Mutunuc 61 engine. It was offered a few years back as an engine special by RJL. The craftsmanship is excellent. This engine is a heavy one, weighing 715 grams (1.57 lbs). Most well made engines come with their own tools for servicing and adjustment. This engine is no exception. |
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This is another Russian built .61 engine, called the Zeus. It was offered by Model Engine Co through RJL in 1995 for $79.99. It is also an ABC construction weighing only 512 grams (1.12 lbs)! Very light for its size. |
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The Italian made SuperTigre 61 is a great running engine. It weighs 620 grams (1.37 lbs), which puts it between the two Russian made engines. The SuperTigre generates lots of power and when adjusted properly (slightly rich) will last hundreds of flights. The larger the SuperTigre engine, the better is handles and runs! We especially like the 3250, 3000, and the 4500 (2 Cubic Inches, 1.8 Cubic Inches and 2.76 Cubic inches respectively). |
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This is one of the Norvel 0.061 MIG engines, a powerhouse for the price. Several House of Balsa kits were purchased at the reduced prices offered by Norvel, including a P-51, P47, Me109, and a FW190. These should be great projects if the winter months keep us in doors this year. |
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Many modelers started out learning two stroke engines with a Cox 0.049 like this one. It weights a whopping 64 grams. Kind of out of the league compared with the other engines shown here. Still, this reed valve engine is a classic. |
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A SAITO FA150 and a FA182TDP, 1.5 Cubic Inches and the twin 1.82 Cubic Inches respectively. We have an Extra 300S planned for the 150 and a Hangar 9 UltraStick planned for the 182. |
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Every engine collection should contain one of these four stroke engines. The OS .30 Cubic Inch Wankel is a real stump puller for its size. It is difficult to start without an electric starter, but worth the effort. According to OS, engine rebuilding should be left to them, if and when it is required. |
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A blast from the past! This is the Evra gasoline engine. It was used to haul around some of the original Bud Nosen Designs. The engine is way underpowered for its weight (2073 grams - 4.5 lbs with the mount). Most of these large models needed the nose weight anyway, so this was a good choice. |
Four Stroke motor in motion!
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