Playmore Hobby 玩多D

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.

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.

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.

Gasket:
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.

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 3 inserts made of tungsten alloy and the inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration.