Displacement: 3,49 cc
R.P.M. (max power): 38.800 RPM
Practical range: 6.000-44.400 R.P.M.
Bore x stroke: 16,26x16,80 mm
Sleeve: 7 ports
Rear ball bearings: steel
Front ball bearings: steel
Crankshaft: 14mm - turbo - tuned
Carburetor: aluminium - 9 mm - slide
Glowplug: Turbo (C6TGF)
Exhaust position: rear
Weight: 336 g
Fuel type: 25% nitro
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.
The 7 transfer ports sleeve is made from hard-chromed brass (true ABC construction).
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 glowplug of engine is a Turbo type glowplug. Turbo glowplugs have a different shape than Standard glowplugs and therefor are not interchange able with engines that are using Standard glowplugs.