Thunder Tiger GP-42 Aero Engine

Brand: Thunder Tiger

Part Number: AM-TT9041

£56.39 Web Price RRP £59.99

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The Thunder Tiger GP-42 engine is designed to combine high performance with easy handling and maintenance using CAD computer technology. Major components of the engine are machined from the highest quality materials using state-of-the-art CNC manufacturing techniques, resulting in consistent-high quality and reliability.


The GP-42 engine is equipped with maintenance-free bronze bushings, Schnuerle porting, a special ABN type piston and cylinder sleeve, an easily adjusted air bleed carburettor, and a safe angular needle valve. The GP-42 engine has been specifically-designed to suit both beginners and experienced modellers.




  • Designed for sport airplane use

  • One-piece crankcase structure

  • Bronze bushing support for easier maintenance

  • Air bleed carburettor design for easier adjustments

  • Aluminium piston with Nickel-plated brass cylinder liner

  • Swept back needle valve for added safety during adjustment

  • Forward side exhaust port

  • Side exhaust

  • 3-chamber muffler included

  • Redline R2 glow plug included



  • Displacement (c.c. / 6.90 c.c. / .421 

  • Bore (mm / in.) 21.5 mm / 0.846 in. 

  • Stroke (mm / in.) 19.0 mm / 0.748 in. 

  • Practical R.P.M. (R.P.M.) 2,000 ~ 15,000 rpm 

  • Output (BHP/RPM) 1.10 BHP / 14,000 RPM 

  • Weight (g/oz) 357.2 g / 12.60 oz 

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