FLASH.21M
2015 World Champion Engine with Filip Tin Pažin - Dessau (Germany)

Displacement: 3,50 cc    R.P.M. (max power): 38.100 RPM    Practical range: 6.000-43.500 R.P.M.    Bore x stroke: 16,26x16,80 mm    Sleeve: 9 ports    Rear ball bearings: ceramic    Front ball bearings: steel    Crankshaft: 14,5 mm - turbo    Carburetor: aluminium - 9 mm - rotary     Glowplug: Standard (C6G)    Exhaust position: rear    Starting: -    Weight: 321 g    Fuel type: 25% nitro

Also available with rear and front steel ball bearings (FLASH.21M/A)

FEATURES

Conrod: The R7 conrod is made from a superlight alluminium which has been checked ultrasonic. The specific form of the R7 creates little turbulence inside the engine while running.

Sleeve: The sleeve has 9 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.

Crankshaft: The crankshaft is grinded to increase the mixture flow and has a special shape to reduce turbulences inside the crankcase. The balancing is done by two inserts made of tungsten alloy and the inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration. The ball bearing was lowered to 5mm.

Compression rings: The ignition timing is controlled with these little rings of various thickness. To change the ignition timing you can add or remove a ring of a certain thickness.