Thunder Tiger’s PRO series engines are equipped with dual-ball bearings, Schnuerle porting, piston & cylinder & mixture control carburettor. Designed to achieve the easiest operation & max performance again & again. The PRO. 21/.28 Series have the most raw power & durability simultaneously! Of course, the new webbed reinforced compact crankcase is made for added wearing resistance & provides effective heat dispersion to meet the demands of long term usage. The PRO series are manufactured by automated computer-controlled machinery, using the highest quality materials. State-of-the-art CNC manufacturing techniques produce not only high performance & reliability but a product that looks & performs better. Precision mixture control carburettor makes adjustments simple. The crankshaft is lightened, & balanced to get a fuel mixture more smoothly. The. 21/.28 engines fit in the same mounting space as the original. 21/.28 engines, with no additional weight
- but delivers greater output & higher practical rpm.
Features: Dual starting system; recoil starter, rotor starter Top grade CNC equipment, state-of-the-art technology are used enhanced mixture control carburettor; which makes adjustments simpler enhanced quality; ISO9001 Certified which guarantees the maximum power & performance Smooth running & long lasting power plant with front & rear ball bearings Dual-ball bearings, Schnuerle porting, piston & cylinder & mixture control carburettor Same mounting space as the original. 28 engines Crankshaft is lightened, & balanced to get a fuel mixture more smoothly Designed for both beginners & experienced modellers Specifications: Displacement: 4.63 cc. / 0.282 cu. in. Bore: 18.30 mm. / 0.720 in. Stroke: 17.6 mm. / 0.693 in. Practical RPM: 3, 000 ~ 35, 000 Output: 2.40 BHP / 30, 000 RPM Weight: 490 g. wo/muffler / 17.28 oz. Product Name/ Code:PRO -28BD-RManufacturer: Thunder Tiger