Spower B7TT SPEED Factory Tuned .21 Racing Engine

Spower, the engine brand of chassis manufacturer Sworkz, has released it latest engine the B7TT SPEED Factory Tuned .21 Racing Engine.  Produced by O.S. Engines in Japan, it is a long-stroke engine that offers quick response at low speeds and more torque in the mid end with consistent idling.  The latest Spower B7TT SPEED piston/liner comes in a conventional 3-port configuration enabling smoother torque throughout the power range.  The engine’s crankshaft has 2 tungsten counterweights contributing to a consistent idle and quick RPM response according to the throttle movements.  The B7TT SPEED also has the latest technology rear thrust plate with surface treatment embedded in the cover plate.  This is to reduce friction against the connecting rod and to extend its life.  The crankcase of B7TT SPEED is redesigned with a new boost port and a new exhaust port for optimum air flow.

Features
B7TT SPEED piston/liner comes with a conventional 3-ports liner enabling more torque throughout the power range.
The new crankshaft has 2 tungsten counterweights contributing to consistent idling and quick RPM response according to throttle movements.
The B7TT SPEED engine comes standard with a black coated crankcase and carburetor.
The B7TT SPEED engine is installed with a high quality rear steel ball bearing.
The B7TT SPEED needle carburetor system is easy to tune.
The crankcase of B7TT SPEED has a new boost port and new exhaust port for optimum air flow.

Spower Japan B7TT SPEED Factory Tuned .21 Racing Engine Specs
Displacement: 3.49cc
Power Output: 2.65ps/2.61 hp / 33,000 r.p.m.
Bore: 16.27mm (0.641 in.)
Stroke: 16.8mm (0.661in)
Practical R.P.M: 3,800~41,000 r.p.m
Weight: 350g (12.40oz.)

Source: Sworkz [sworkz.com]