BORE                         39,5

WEIGHT                       1790g/62 oz

RPM                          1200-6000

RPM                          20x10 6000

CRANK SHAFT 2x BALL BEARING NSK

IGNITIOR PROCESSOR CONTROLLED

FUEL GAS + OIL MOTUL 600 1:50

Shoshonrcmotor has selected the roto motor 35fs-85fs  single and boxer  four stroke engine to introduce customers to the Rotomotor experience.
We feel very confident you will agree this is the finest single and boxer four stroke gasoline model aircraft engine available.

The goal for the new 35fs-85fs four stroke engine was simple.
It must be easy to start, develop very good power, be fuel efficient, operate quietly and be extremely reliable.
Well, they succeeded!
Just look at the exploded parts diagram and you will see there is an extraordinary amount of technology packed into this little gem of an engine.
It truly belies its simple lines and clean exterior!

The Roto 35 fs-85fs is very powerful and will easily surprise you.
We recommend the Roto 35 fs for any 1.20 plus sized warbird up to 20lbs or in 25-27% aerobatic aircraft up to 15lbs. Roto 85fs It really is the perfect choice for 1/3 scale aircraft such as Piper Cubs and 30-33% aerobatic applications.
Doing all of this while providing extreme fuel economy with very quiet operation.

**a proper and adequate break in is required *

Thanking you in advance for your honesty and interest.

Best regard Shosho