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3MM 53CC Engine
Ex Tax: £270.83
3MM 53CC Engine
Probuild is happy to be able to provide this excellent quality lower cost engine for 50cc size airplanes. The 3MM-53 is a 53cc engine designed specifically for high performance aircraft. Its design reflects the need for high power, durability, and reliability with smooth trouble free operation flight after flight.
The 3MM-53 is specifically designed to R/C aircraft use and uses a 3 ball bearing crankshaft which makes this engine the smoothest in its class along with long life of the big end. Because the big end is suported between two bearings the big end will not fall out like other two bearing engines on the market. This pays back in reliability and increased life of your airframe.
The key to power in an engine is good breathing. The 3MM-53 excels here with its 2 petal reed valve induction and the 4 bypass ports plus 2 boost ports in the cylinder. A reed valve engine has the advantage of automatically changing the induction timing to match power requirements, which usually results in a better, smoother idle without loss of top end power compared to a piston port or rotary valve engine.
No engine is complete without a variety of exhaust options. The standard 3MM-53 is shipped with a lightweight TIG welded muffler. This muffler is moderate in sound reduction and we would only recomend use at remote flying sites where noise is not an issue. For normal operation we recomend a tunned muffler which is accomidated within the fuselage or in a tunnel under the fuselage.We have available tunned muffler & manifold kits for each of the X-Tech models,Click Here For More Info
Strong castings with integrated mounting lugs eliminate the need for standoffs in most installations. A 6 bolt prop hub matches the 3W/DA-100 bolt pattern so props will interchange and you can use a commonly available drill jig. The real Walbro carb comes with a phenolic arm that can actually be used with your throttle servo, and the deluxe version has an upgraded aluminum arm installed for use with a choke servo. The engine uses the CM-6 spark plug and comes with a CDI ignition with automatic electronic timing control that really works.
Power output is what you really want the 3MM-53 registering 7400 RPM on our Mejzlik 22-10 prop & K&S piped exhaust.These are excellent numbers!!!!
Specifications
TOC-53
Displacement 53cc
Bore 44mm
Stroke 35mm/
RPM Range 1200-7800 RPM
Horsepower 5.5 HP
Weight 1880g all up
Fuel/Ratio Premium Gas mixed 40:1~50:1
Piston Rod 2 Needle Bearings
Crankshaft 3 Ball Bearings(nsk)
Ignition 4.8~6 Volt- Electronic
Prop Size 2 blade 22x8, 22 x 10 ,23x8 3
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