R/C trainer planes are usually designed for.40-class 2-stroke glow engines, and often fly best with engines from the lower end of their recommended ranges — a.40 cubic inch engine will work fine with a '40 size' trainer.

As an operator of modern glow engines, theory probably isn't at the top of your priority list. However, wouldn't it be gratifying to have the knowledge to answer confusing issues concerning engine operation without consulting the local expert. Wouldn't it be fulfilling to discuss the pros and cons of controversial topics, such as fuels, glow plugs and engine performance graphs, in an intelligent manner? Understanding basic theory gives you the capacity to achieve these operational objectives.^%&$.

[PDF] Free Download 2-Stroke Glow Engines for R/C Aircraft by C. David Gierke E-book^ Books^ • 1.

PDF 2-Stroke Glow Engines for R/C Aircraft • DESCRIPTION As an operator of modern glow engines, theory probably isn't at the top of your priority list. However, wouldn't it be gratifying to have the knowledge to answer confusing issues concerning engine operation • without consulting the local expert. Wouldn't it be fulfilling to discuss the pros and cons of controversial topics, such as fuels, glow plugs and engine performance graphs, in an intelligent manner? Understanding basic theory gives you the capacity to achieve these • operational objectives. • if you want to download or read Aqualeo's The Book of 2-Stroke Glow Engines for R/C Aircraft, click button download in the last page • Download or read Aqualeo's The Book of 2-Stroke Glow Engines for R/C Aircraft, by click link below MORE DESCRIPTION OR.

These engines use a special type of fuel that not only provides the energy for combustion, but also serves as a coolant and lubricant. It’s basically alcohol mixed with oil and a touch of nitromethane. Other than the plug and fuel, glow engines work the much the same way as any other internal combustion engine, but there are some distinct differences that are important to know. Two Stroke vs. Four-Strokes Engines There are two types of nitro RC engines used with radio controlled airplanes.

There are two cycle (2-stoke) and four cycle (4-stroke) nitro engines. A two-stroke RC engine fires every time the piston reaches the top of the cylinder while a four-stroke engine fires every other time. Four-stroke engines fire every other revolution which produces a very low pitched growl that sounds a lot like a full-scale airplane! For this reason most large aerobatic and giant scale planes including warbirds use 4-stroke engines. Four-stroke nitro RC engines are also easier on fuel consumption. Four stroke engines can be a bit more tricky to tune than 2-stroke engines. This is really a non-issue if you invest in a good tachometer.

Four-stroke nitro RC engines produce more torque at lower RPM’s compared to a two-stroke RC engine. This means that four stroke will use a much larger diameter propeller than a two-stroke engine. Ball Bearings vs.

Bushings Some nitro RC engines are available with ball bearings supporting the crankshaft while others have bushings that support the crankshaft. It is easy to tell if a nitro RC engine has bearings or not just by looking at it. Take a look at this O.S. 46AX engine above.

The area highlighted red is where the bearings sit in the housing. 46LA engine on the right does not have bearings. Although bushed engines are cheaper, they are not nearly as powerful or efficient as engines with bearings. This is because the bearings do a much better job of minimizing friction than bushings do. ABC Nitro RC Engines There are two different ways that nitro RC engine manufactures seal the piston with the sleeve in the bore.

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It is critical that the piston and sleeve form an airtight seal in order for the engine to produce compression. Some RC engines simply have a ring that goes around the top of the piston that seals with the iron sleeve.

This is called a “ringed” engine. Obrazec protokola zasedaniya komissii vbi. To the left is a cross sectional view of the piston/sleeve assembly of a ringed engine. It is greatly exaggerated in order to illustrate how a ringed piston seals with the sleeve. The portion in red is the ring.