Comparing an OS .21 VZ-R Turbo 2 to an OS FS 26 SC...

The .21 VZ-R:

Displacement: 0.211 cu in (3.5cc)
Bore: 0.654 in (16.6mm)
Stroke: 0.630 in (16.0mm)
Practical rpm: 3000-42,000
Output: 2.5 ps @ 34,000 rpm
Weight: 11.1 oz (315.5g)


The 4 stroke:

Displacement: 0.269 cu in (4.4 cc)
Bore: 0.728 in (18.5 mm)
Stroke: 0.648 in (16.4 mm)
Practical rpm: 2000-22,000
Output: 0.5 ps @ 17,000 rpm
Power Output: 0.5 bhp (ps) @ 17,000 rpm
Weight (FS-26S-C): 8.56 oz (243 g)


As you can see the .21 puts out 5 times the power at twice the RPM.....

Bear in mind, all the research and development going into 2 strokes has yielded these power figures.

I'm sure with development we will see power increases in 4 strokes, and i think 4 strokes should run superchargers of some sort to increase output.

Perhaps dual overhead cams and 4 valve engines to increase power?? 4 stroke tuned exhausts, larger heatsink head etc.etc.
Just needs time and development, but 2 strokes will probably always have more power.

I heard a rumour that honda has designed a revolutionary 2 stroke that uses no oil, and is more economical than a 4 stroke.....


The fact that 2 stroke nitro engines have like 3 moving parts wins me over.....simple yet extremely effective...