Displacement: 3,49 cc
   R.P.M. (max power): 40.100 RPM
   RPractical range: 6.000-46.800 R.P.M.
   Bore x stroke: 15,88x17,60 mm
   Sleeve: 9 ports
   Rear ball bearings: ceramic
   Front ball bearings: steel
   Crankshaft: 14,5 mm - tuned - turbo
   Carburetor: aluminium - 9 mm - slide
   Glowplug: Turbo (C8TGH)
   Exhaust position: rear
   Starting: -
   Weight: 336 g
   Fuel type: 25% nitro

Also available on request with front and rear ceramic ball baerings.


02663   08569   85021t   21000-2
This a 'Lighter&Lower evolution 2' type of cooling head.
It is drilled and milled out to reduce the mass of the coolinghead which sits high up in the car and thereby lowering the Center of Gravity of the engine/car.

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.

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 3 inserts made of tungsten alloy and the inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration.
The inner shape of the gasket has a new shape, and with that more material. Together with a change in material these gaskets are more resistant to high temperatures.

biella-R7   13021   16607   03902
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.

  Rear cover:
The rear cover presents a round shape to optimize the filling and reducing the dead spaces. the steel plate is to reduce friction and to expand the lifespan of the conrod.

  Rear ball bearing:
The new ball bearing reduces the inertia of the rotating masses and increases the engine's scavenging. You can see both the ball bearing and the manufacturing process result in the picture. These novelties give an increased throttle response and a higer top speed.
  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.


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