RCPlanet
Thunder Tiger PRO .21BX-R w/Slide Carb TTR9475
, Displacement:, 0.213 cu in (3.49cc), Bore:, 0.661" (16.8mm), Stroke:, 0.661" (16.8mm), Practical RPM:, 3,000 - 36,000, Output:, 2.15 HP @ 30,000 rpm, Weight:, 16.23oz (460g), Carburetor Settings, Needle Valve:, 3 - 3-1/2 turns counterclockwise from closed, Mixture Metering Screw:, After setting needle valve, 1/8 turn clockwise if mixture is too rich or 1/8 turn counter-clockwise if mixture is too lean, Height from Mounting Tab Bottom/Top of Cylinder Head:, 3.7" (94.5mm), Height from Crankcase Bottom to Top of Cylinder Head:, 4.2" (108mm), Width at Mounting Tabs:, 1.8" (45.4mm), Width of Crankcase below Mounting Tabs:, 1.2" (31mm), Center of Mounting Holes Same Side:, 0.83" (21mm), Center of Mounting Holes Opposite Side:, 1.4" (36.9mm), Center of Crankcase to Front Bearing:, 1.8" (45.9mm), Distance from Starter to Front Bearing:, 3.3" (84.8mm), Note:, The carburetor is preset from the factory and requires only small adjustments, ,
Designed to achieve the easiest operation and max performance over & over, the new PRO-21BX-R delivers an awesome raw power & durability !
The new webbed reinforced compact crankcase is made for added wearing resistance and provides effective heat dispersion for longer runs.
All PRO series engines are manufactured by automated computer-controlled machinery, using the highest quality materials and state-of-the-art CNC manufacturing techniques to deliver a powerplant that looks and performs better. Precision mixture control carburetor makes adjustments simple, the crankshaft is lightened, and balanced to achieve a smoother and more efficient fuel mixture.
The new 21 engine fits in the same mounting as the original .21/.28 engines, with no additional weight - but delivers greater output and higher practical RPM.
The Pro-21BX-R is equipped with a built-in recoil starters ("X" type) for easy and quick start.
Features
Rear exhaust
ABC construction: Aluminum piston with Cr-plated brass cylinder liner
Hypereutectic machined Al-Si ringed piston
High-strength connecting rod with bushings pre-installed
SG crankshaft
One-piece crankcase with squared-off cooling fins
Dual ball bearing-supported crankshaft
Machined over-sized heat sink head
Built-in pull starting backplate
Three-needle valves slide valve carburetor
State-of-the-art CNC machined components
Check price and availability
Found 11 years ago