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Description |
Part # NVRROMA25
Cooling head:
The cooling heads of the ROMA.21 engines are made lighter by making aditional holes in the cooling fins. This reduces the overall mass of the engine.
Rear ball bearing:
The outer diameter of 25.80 mm has been adopted in order to avoid ring distorsions and to increase fatigue resistance.
Carburetor:
This carburettor is made from plastic and have a sliding throttle valve. (reverse type)
Sleeve:
The sleeve has 7 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.
Crankshaft:
The Turbo SG crankshaft is made from high quality steel.
Gasket:
The inner shape of the gasket has a new shape, and with that more material. Together with a change in material these gaskets are more resistant to high temperatures.
Glowplug:
The glowplug of engine is a Turbo type glowplug. Turbo glowplugs have a different shape than Standard glowplugs and therefor are not interchange able with engines that are using Standard glowplugs!
Cilindrata / Displacement | 4.04cc. | |
Potenza massima / Max. power | -- Hp. | |
R.P.M (Max. power) | 37.500 R.P.M. | |
Regime di utlilizzo / Practical range | 6.000 ~ 42.100 R.P.M. | |
Alesaggio x corsa / Bore x stroke | 17.10mm x 17.60mm | |
Accoppiamento Sleeve |
N. Travasi / N. Transfer ports |
N. 7 |
Codice / Code | 08500-25 | |
Cuscinetti Ball Bearings |
Anteriore / Front | Acciaio / Steel |
Posteriore / Rear | Acciaio / Steel | |
Tipo d'avviamento / Starting | Starterbox | |
Albero Crankshaft |
Tipo / Type | 14mm - SG |
Codice / Code | 15000-25 | |
Carburatore Carburetor |
Tipo / Type | 9mm - Scorrimento / Slide |
Materiale / Material | Plastica / Plastic | |
Regolazione / Adjustment | Singola / Single | |
Codice / Code | 24069 | |
Tipo di candela / Glowplug type - Codice/Code | TURBO - C6TGC | |
Tipo di scarico / Exhaust position | Posteriore / Rear | |
Tipo di miscele / Fuel type | Consigliata / Advise: 25% Nitro | |
peso / weight | gr. |
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