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ROTO 85 FS-NG - two cylinder four stroke gasoline RC airplane engine (Global Warehouse)

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    ROTO motor 85 FS is two cylinder  4 stroke  gasoline engine made specifically for the model  airplanes up to 3.6 m (11.8’) and 20 kg (44,2 lb). These dates are for recreational flying.

    The Engine was developed in Europe with the assistance of CAD systems (Solidworks) and optimized for the liquid flow in the Flow software (made by Solidworks).

    All ROTO engines and its components are made and programed by utilizing the state of art 5 axis machinery made by American companies HASS and Siemens NX.

    Every engine, made by ROTO MOTOR Company is bench tested and adjusted by qualified technician on the Engine Star equipment to ensure its peak performance.

    RotoMotor Team give one year factory defects warranty. After factory warranty time, Customers can send the engine back to Sydney Australia for repair/maintenance. Team Austars only charge factory parts cost and labor fee $77 AUD/Hour (GST Inc).Both inbound/outbound freight costs will be paid by the buyer.

    Austars Engine Team in Sydney Australia give 24/7 days technical online support.

    Our online 24/7 contacts:

    WhatApp/line: 0061 0433 000 015

    Wechat: 2672191400

    Livechat or Skype: Austarsmodel   

    Facebook Messenger: Austars-Model Sydney   


    Basic technical data:

    * DISPLACEMENT 85 ccm


    * BORE 39,5 mm

    * WEIGHT 2 790 g




    * FUELGAS + OIL MOTUL 710 1:30

    * RPMrpm 1200 - 6000 with propeller 25-27"

    Manufacturing technology ROTO 85 FS

    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. 

    Pieces of engine are after clearing by the scan pieced together in preparations at the special workplace.


    Description of the engine:

    4-Stroke Gasoline Engine
    RC Gasoline Engine
    Engine for RC Airplane  
    Gasoline RC Engine
    Twin Cylinder Gasoline RC Engine
    Engine for Large Model Aircraft
    Four Stroke Gasoline Engine
    RC Airplane Engine 
    Engine for UAV

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