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KAVAN four-stroke engines are an excellent choice for recreational sports, acrobatic models and model aircraft. They are characterized by reliable operation and very easy adjustment; they are "consumer" engines in the best sense of the word, which every fan of the deep "puffing" of four-stroke engines can afford to buy and operate. And if you take appropriate care of them, they will reliably power your models for many years.
KAVAN FS-30AR is a four-stroke engine with a valve train designed for all types of aircraft models, especially suitable for RC models. It is equipped with a two-needle RC carburetor; The basic set also includes an expansion muffler.
The crankshaft has a thread for a UNF 1/4-28 propeller nut.
Recommended propeller dimensions:
Break-in: 9×6"
Sport: 9×6"
Model: 10.5×6", 11×5"
Recommended fuel tank: 100–170 ml.
Recommended fuel: KAVAN 4T Air 5% nitro for break-in and normal operation, after break-in you can also use KAVAN 4T Air 10% nitro or 15% nitro. Castor oil fuels should contain at least 18% castor oil (or a mixture of synthetic and castor oil) and 5-15% nitromethane. (Although KAVAN four-strokes can also work well on non-nitrated "FAI" fuel, we recommend using fuel with at least a small nitromethane content - the engine operation is then highly reliable and carburetor adjustment is easier and less sensitive to temperature changes and other environmental influences.)
Recommended spark plug: KAVAN GP-1, O.S. MAX type F, KAVAN Premium No.4T.
The engine kit includes: engine with RC carburetor, expansion muffler with adapter, instructions.
| Displacement [ccm] | 5 |
| Number of cylinders | 1 |
| Bore [mm] | 19.7 |
| Stroke [mm] | 16.4 |
| Operating speed [rpm] | 2500 - 10000 |
| Motor power (9500RPM) [W] | 400 |
| Weight [g] | 275 |
| Recommended tank volume [ml] | 100 - 180 |
| Propeller nut thread | 1/4 UNF |
