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O.S. Speed R2104 1/8 Scale Engine

Item No. OSMG2025
O.S. Speed R2104 1/8 Scale Engine
O.S. Speed R2104 1/8 Scale Engine
O.S. Speed R2104 1/8 Scale Engine
O.S. Speed R2104 1/8 Scale Engine
O.S. Speed R2104 1/8 Scale Engine
O.S. Speed R2104 1/8 Scale Engine
O.S. Speed R2104 1/8 Scale Engine
Brand Logo
4.2 out of 5 Customer Rating

O.S. Speed R2104 1/8 Scale Engine

Item No. OSMG2025
$599.99 Price reduced from $999.99 to
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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
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
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
Inner Head

A silicon O-ring fit to the inner head prevents dust from coming into the engine.

 

Crankshaft
Crankshaft

The redesigned crankshaft counter weight enables smooth power transition from low to top.

 

Carburetor
Carburetor

The carburetor is 21M2(B), which has been proved to be consistent and reliable for generations (R2101, 2102, 2103)

 

 

Product Specifications

Specs

Bore 16.08mm (0.633" )
Carb Type Slide valve
Crankshaft Threads UNF 1/4-28
Crankshaft Type Threaded
Cylinders Single
Cylinder Type Nine port liner
Displacement 3.49 cc (0.213 cu in)
Engine (Only) Weight 340g (11.99oz)
Power Type Glow
HP 2.8 ps / 2.76 hp at 35,000 RPM
Plug Type OS RP7 turbo, cold heat range
Product Height 91.2mm (3.6"), total height
Product Length 94mm (3.7") backplate to of crankshaft
Product Width 45mm (1.8") at mounting tabs
Recommended Fuel 10 - 30% nitro content, 20% recommended for break-in
RPM Range 4,000 - 45,000
Starter Type Bump
Stroke 17.20mm (0.677" )