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Nitro Engines for RC Models (General)

Parts and Spares for Radio (Remote) Controlled Models.
Introduction

   Also referred to as "glow engines", nitro engines come in a wide range of types and sizes, and their specifications differ, dependant on the type of RC model it is intended to be used for and the physical size of the model.

   Fuelled by a mixture of nitromethane and methanol, nitro engines require a "glow plug" with a platinum-iridium coil, to ignite the mixture. Initially, the coil has to be heated using an electric current from a "Starter", after which the heat from combustion will keep the engine running until the flow of fuel is cut off or runs out.

   For RC Touring Cars, Buggys, Trucks and Monster Trucks, an engine with an RPM of between 20,000 and 35,000 is generally sufficient. For Aircraft, 20,000 to 25,000 RPM is the norm and for Marine models 10,000 to 15,000 is the average.

   On this page you will find page link lists of Nitro/Gas Engines, primarily for Radio Controlled models, categorised by Engine Size, Model Type and Engine Manufacturer.
cc = Cubic Centimeters.
ci = Cubic Inches.






Airplane Engines Boat/Marine Engines Buggy Engines Helicopter Engines Truck Engines Truggy Engines Monster Truck Engines Touring Car Engines
Diesel Engines Four Stroke Engines Jet Engines Wankel Rotary Engines Water Cooled Engines Gas/Nitro Engines











Exhaust - Tail Pipes Glow Plugs Carburetors Fuel Tanks Starters Glow-Starter Batteries Engine Kill Switch
Engine Bearings and Bearing Sets Spur Gears Nitro Fuel Pinion Gears Radio Transmitters etc























Hints and Tips

Choosing a Nitro Engine.

   Once you have made your choice of RC model, you need the right engine to get you where you want to be out in front.

   Touring / Drift Cars: Nitro powered Touring cars require a specific ability. Your first consideration should be the tail pipe. A number of models will take only a rear tail pipe configuration, but the majority will accept the more conventional side pipe.

   Beginners should consider something with a moderate amount of power and a rotary carburettor for easier controlled handling. For top level tarmac track racing or those with more experience, look for an engine with good low end torque that has a slide valve carburettor to give you fast acceleration out of the corners.

   Trucks and Monster Trucks: Unlike on road Touring Cars, Off Road Trucks and Monster Trucks don't need that bottom end torque, unless you like to do wheelies. So something less powerful with a rotary carburettor will provide you with the smooth acceleration and less wheel spin required for controlled dirt track racing.

   If tarmac is your thing, where grip is not a problem and you have the experience, a slide carburettor may suit your needs better. Tail pipe choice is generally a matter of preference. Most trucks will accept both side and rear configurations.

   Buggys: By far the most popular Off Road Nitro RC Models there is a wide choice of Buggys out there, many of which now come with engine included.

   Most Buggy engines use a slide valve carburettor, but if you are new to RC you may be better off trying a rotary carburettor. High low end engines with throw up plenty of dust but if you can't keep it on the track you are wasting your money. So something with less power may be better for you until you feel more confident.

   Airplanes and Helicopters: Engines for Aircraft are generally much tougher than conventional Nitro engines, in that they must be capable of maintaining high RPM levels for long periods. Choosing the right Engine for flying models is also a little more complicated. First of all you should check the model manual and see what size and kind of engine is suggested.

Charts and apps to calculate the right motor are widely available to help you choose, based on the scale of your model, wingspan and weight. Our suggestion is to always err towards over estimating your needs. Over powered is better than under powered.

   Boats and Ships: Nitro Engine choice for this version of RC is basically one of requirement and preference, depending on the type of model (eg. Speed Boat or War Ship) and the weight and length of the hull. Unlike the more conventional RC Nitro engine, Marine engines are generally water cooled.

If you intend to race your model, the weight of the Engine and fuel may have to be taken into consideration. If you are unsure, ask the more experienced racers at your local club for advice, they are always willing to help newcomers to the sport.





Hints and Tips

Gas / Nitro Engines

1/   New RC Gas Engines need running or "breaking" in before being used competitively. 2 or 3 tanks of fuel are usually enough, but don't over rev the engine and try to keep it cool, below 160 degrees F (71 degrees C)

2/   To maximise your RC Gas engines power, reduce air leaks as much as possible by using silicone sealant or high temperature gaskets where the carburettor and the exhaust manifold joins the engine block.

3/   As a rule, try to keep your engine temperature at around 210 F (99 C) and no higher than 225 degrees F (107 degrees C). If your engine temperature is higher than 225 F (107 C) try tweaking the mixture a little richer. If too cool (below 200 degrees F (93 degrees C)) tweak the mixture a little leaner.


Tell Tale Signs of a Lean burning engine.


1/   The engine dies at full throttle, or while simply idling.

2/   The Glow Plug element is white.

3/   The engine overheats (above 225 degrees F (107 degrees C))


Tell Tale Signs of a Rich burning engine.


1/   Blue smoke from the exhaust (tail) pipe.

2/   The smell of fuel from the exhaust (tail) pipe.

3/   Engine temperature below 200 degrees F (93 degrees C)


For More Setup Information check out my Hints and Tips page.







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