Brand: J Perkins

Part Number: 4477250

£294.49 Web Price RRP £309.99

Shadow stock: Usually ships next day

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Roto engines are manufactured by one of the leading Czech model engine company's. No expense has been spared with any of the materials and components used to produce this range of quality high performance petrol engines. Roto motors use a rotary valve induction system to aid easy starting and produce a smooth consistent linear performance with a slow idle speed. Roto is one of the only petrol engine manufactures to use a conventional model type engine mounting system on the 25 and 35 size engines which, of course, allows easy installation into most aircraft. Also worthy of note is the fully shielded electronic ignition system which ensures no interference with your transmitter signal.


Displacement: 34.8cc
Bore: 39.5mm
Weight: 1480g (3.26lb)
Ignition: 4.8 – 6V
Fuel / oil: 32:1 (break-in); 50:1 (normal operation)
Piston rod: 2 x needle bearing
Static thrust: 9.5kg
RPM: 1400 - 8500
Crankshaft: 2 x roller bearing

Manufacturing Technology


The engine case is rough cast aluminium CNC manufactured to the highest tolerances and finished with a strong heat-proof powder coating.

Cylinder sleeve

Manufactured from a single piece of dural with a pressed insole from mild-granular cast iron. It is then shaped and honed to the correct size.


The Pistons are cast from high-quality silicon alloy and machined to a high tolerance.


Made from one piece of high-grade steel the crankshaft is machined then hardened. All components are carefully cleaned and scanned to verify they comply with the strict tolerances that Roto Motors demand.
Roto 35 VI Petrol Engine (35cc) Features:

  • Electronic processor controlled ignition.
  • Suits props in the following range: 20 x 8", 20 x 10", 21 x 8" and 21 x 10".
  • Every engine is factory tested and adjusted prior to sale.
  • Rotary valve induction system facilitates easy starting.
Roto 35 VI Petrol Engine (35cc) Includes:
  • 1 x Roto 35Vi two-stroke petrol engine.
  • 1 x Electronic ignition unit.
  • 1 x Standard muffler.
  • 1 x Plug spanner and Allen key.
  • 1 x Instruction manual.
  • 1 x Exhaust manifold gasget.

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