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Overview
The O.S. SPEED R2104 is a factory tuned engine solely developed for 1/8 racing competition. This new engine boasts 9-port piston liner to improve torque in low-middle power range. It also produces enough power as designed even for high traction tracks. The redesigned crankshaft counter weight enables smooth power transition from low to top. Distance of each fin of the heat sink head is enhanced for better air flow for cooling and better balance. The heat sink head is anodized in both black and red for a high contrast and powerful aesthetic.
Video Overview
Cylinder Liner
This new engine boasts a 9-port piston liner to improve torque in low-middle power range. It produces enough power as designed even for high traction tracks.
Outer Head
Distance between the cooling fins is enhanced for better air flow and better balance. The heat sink head is anodized in two colors: black and red.
Inner Head
A silicon O-ring fit to the inner head prevents dust from coming into the engine.
Crankshaft
The redesigned crankshaft counter weight enables smooth power transition from low to top.
Carburetor
The carburetor is 21M2(B), which has been proved to be consistent and reliable for generations (R2101, 2102, 2103)
Combo Set
A new combo set has applied T-2080SC + a new manifold MR0, which works to improve air flow - the T-2080SCII complete set.
| Bore: | 16.08mm (0.633" ) |
| Carb Type: | Slide valve |
| Crankshaft Threads: | UNF 1/4-28 |
| Crankshaft Type: | Threaded |
| Cylinder Type: | Nine port liner |
| Cylinders: | Single |
| Displacement: | 3.49 cc (0.213 cu in) |
| Engine (Only) Weight: | 340g (11.99oz) |
| HP: | 2.8 ps / 2.76 hp at 35,000 RPM |
| Height: | 91.2mm (3.6"), total height |
| Length: | 94mm (3.7") backplate to of crankshaft |
| Muffler Type: | Tuned Muffler |
| Plug Type: | OS RP7 turbo, cold heat range |
| RPM Range: | 4,000 - 45,000 |
| Recommended Fuel: | 10 - 30% nitro content, 20% recommended for break-in |
| Starter Type: | Bump |
| Stroke: | 17.20mm (0.677" ) |
| Type: | 1/8 scale buggy engine |
| Width: | 45mm (1.8") at mounting tabs |
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