Thunder Tiger - PRO-40

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Product No. TTR9140 MSRP: $175.99   The PRO series engines are equipped with twin ball bearings, Schnuerle porting, twin needles, piston and cylinder that provides years of trouble-free performance.   Specification:  Displacement: 6.52 cc. / 0.398 cu. in.  Bore: 20.9 mm. / 0.823 in.  Stroke: 19.0 mm. / 0.748 in.  Crankshaft: UNF 1/4 / 28  Practical RPM: 2,000 ~ 17,000  Output: 1.22 BHP / 16,000 RPM  Weight: 454 g. w/muffler / 16.03 oz.

All Thunder Tiger engines have been designed to combine high performance with easy handling and maintenance using CAD computer technology, resulting in consistent high quality and reliability. Featuring aerospace-quality ball bearings to properly support the crankshaft at high RPM.

The Pro series are manufactured by automated computer-controlled machinery, resulting in a product that looks and performs better. Forged aluminum connecting rod with dual bushings connects it all together, and a unique "square" cylinder head design has more surface area than conventional engines, allowing for cooler runs. Precision air bleed carburetor makes adjustments simple, and efficient mufflers keep things quiet at the field.