OS Engines

O.S. 21TM ABC w/Revo Manifold

12241

Nuevo

This is the O.S. Max .21 TM Engine with the Revo Manifold (also fits Traxxas Slayer). This engine will be a direct drop in for the Traxxas 2.5 and 3.3 Revo or the Slayer Pro. The .21 TM will adapt directly to the Traxxas EZ start or pull start systems. The O.S. .21 TM engine is for serious racers and backyard bashers alike that are ready for some major power.

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$ 366.67

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FEATURES: Adapts perfectly to the Traxxas E-Z Start or pull-start systems with
no modifications, Included manifold is specially designed to fit directly onto the
Revo, Traxxas' clutch assembly bolts right to the crankshaft with no
modifications, Oversized cooling fins on crankcase helps to keep engine cooler
Three needle slide valve carburetor with fins to help cool the fuel
as it enters the engine, High-performance long reach
O.S. LC3
glow plug suitable for off-road
applications that require constantly varying speed

 

SPECS:    Displacement: 0.21 cu in (3.4cc)
Bore: 0.669" (17mm)
Stroke: 0.590" (15mm)
Practical RPM: 3,000 - 35,000 RPM
Output: 1.8 ps / 29,000 RPM
Weight: 8.57oz (243g)

 

Needle Settings:
- High Speed Needle (Needle Valve) 2-1/2 turns out from close.
To break-in close approximately 30° after running one tank
of fuel through vehicle, repeat five times
- Mid Range Needle (Mixture Control Valve) Screw head is exactly
1/2 turn in from flush with the carb body
- Low Speed Needle (Metering Needle) Turn 30° clockwise to lean

mixture or counter-clockwise to richen mixture



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O.S. 21TM ABC w/Revo Manifold

O.S. 21TM ABC w/Revo Manifold

This is the O.S. Max .21 TM Engine with the Revo Manifold (also fits Traxxas Slayer). This engine will be a direct drop in for the Traxxas 2.5 and 3.3 Revo or the Slayer Pro. The .21 TM will adapt directly to the Traxxas EZ start or pull start systems. The O.S. .21 TM engine is for serious racers and backyard bashers alike that are ready for some major power.

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