Crankshaft: The crankshaft is 14.5MM 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 to5mm. The front part was extended to improve the seal against fuel leaking.

Sleeve: The sleeve has 9 transfer ports and an exhaust with booster ports total of 12 ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.

Front ball bearing: The front ball bearing is 5 mm thick. This change was done to increase the sealing surface between crankshaft and crankcase and to avoid fuel leaking.

Rear ball bearing: the outer diameter of 26.00 mm has been adopted in order to avoid ring distorsion and to increase fatigue resistance.
The rear ball bearing is also available with high quality ceramic balls type (as an option) in order to grant a longer lasting together with a higher fluency; this all is an advantage for acceleration and fuel consumption.

Rear Cover: The rear cover presents a round shape to optimize the filling and reducing the dead spaces.

Crankcase: The crankcase has a 3 porting system. The shape of these portings obtain the best possible mixture flow.

Conrod: The R7 conrod is made of 7075 aluminium alloy, checked by ultrasound and is designed to reduce turbulence during its movements. It is also lighter but without jeopardizing the strength and reliability.

Carburetter: The 35plus 21 is equipped with a 9mm bore rotary barrel carburetter with mixture adjustments for full throttle and midrange. The main needle can also be ajusted by 3rd channel for tuning while on the water

RX21MR2\NS

3.5CC MARINE ENGINE

AUD

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COMES WITH FLYWHEEL

SPEC'S COMING

Crankshaft: The 14mm STD type crankshaft has an bigger bore to increase the mixture flow, the special shape is obtained to optimise the mixture flows inside the crankcase.

Sleeve: The sleeve has 7 transfer ports and exhaust port with 2 sub port total of 10 ports and is made from hard-chromed brass
(true ABC construction).

Piston: The super light piston is made from high quality aluminium alloy and it is CNC machined.

Long stroke: The long stroke of this engine, 16.80mm and with a bore of 16.26mm, provides more torque at low rpm.

N528MS2

4.66CC MARINE ENGINE

AUD

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SPEC'S COMING

Sleeve: the sleeve has 8 transfer ports with a exhaust port with boosters ports, designed after fluid dynamics studies, so we have increased the maximum power and taking care of the fuel consumption.

Piston:The super light piston is made from high quality aluminium alloy and is CNC machined

Rear ball bearing: The outer diameter of 25.80 mm has been adopted in order to avoid ring distorsions and to increase fatigue resistance.

Crankcase: The special transfer system allows to increase the mixture flow speed during the intake stroke with an improvement of the performance.

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