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10-14-2013 | 12:22 AM

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SJN

Joined: Sep 2002

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From: Copenhagen, DENMARK

ROTO 85cc inline 4 stroke

Just found this..... Looks neat

http://www.rotomotor.cz/rotomotor/es...36-ROTO-85-FSI

Coming soon

Basic technical data:
* DISPLACEMENT 85 ccm
* BORE 39,5 mm
* WEIGHT 3 000 g
* PISTON ROD 4 × NEEDLE BEARING
* CRANK SHAFT 4 x BALL BEARING NSK
* INGNITION PROCESSOR ROTO
* FUELGAS + OIL MOTUL 710 1:40
* RPM 1000 - 5800
* 2 BLADE PROPELLER 25-26/10-12
* 3 BLADE PROPELLER 24/10-12
* STATIC EN. THRUST 13 kg

Manufacturing technology ROTO 85 FSI

Crank case (kit) – it is rough-worked of the cast at the CNC milling cutter. After that it is covered or slashed with a special colour.
Cylinder (roll) – it is made of one piece of dural with pressed insole from the mild-granular cast iron, it is sharpened and honed to the correct size.
Piston – it is casted from silicon alloy with one sealing circle. The aparature for the bung 8 mm is honed.
Piston rod – it is forging, which is completely worked. Two needle focuses are moulded into piston rod, it is made for the piston and cranked bung.
Crank shaft – it is made of one piece of steel, it is cemented and hardened and it is completely sharpened.
Back lid of the engine – it is worked casting, in which is hardened and sharpened rolled slide - valve layed.

http://www.youtube.com/watch?v=eJ7mhIPcNY8

Last edited by SJN; 10-14-2013 at 12:25 AM.

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