J.A.W. wrote: ↑
Thu Apr 28, 2022 8:19 am
djos wrote: ↑
Thu Apr 28, 2022 12:47 am
The biggest issue with 2-stroke engines IMO, is the stupidly narrow powerband - they would make F1 cars undrivable. I reckon the 80's turbo cars would be more drivable than an NA 2-stroke F1 car!
In point of fact, you'll have to revise that opinion, & actually, its about 180 degrees off course...
A few cases in point: Cosworth sliced a pair of cylinders from its very successful DFV F1 V8
back in the mid `70s - in an attempt to provide Norton with a 4-stroke capable of winning
bike G.P.'s ahead of the newly rampant 2-strokes, but it was a fail, being 'unrideable' tuned-up.
Honda tried again in `79-80, with a radical 'virtual V8' NR500 4-stroke, yet it was 'unrideable''.
Once the FIM allowed 990cc 4-strokes to compete in the 'Senior/500cc' class, Aprilia tried a 3cyl
slice off Cosworth's V10 F1, 'The Cube' - but this too, was... yeah, you guessed it.. 'unrideable'...
Not only did these massive Moto GP machines have to be 'de-rated' specific output-wise,
they also required all manner of electro-mechanical assists, from a back-torque limiting
'slipper' clutch, to traction-control for power-limiting in corners...
See the Honda dyno graph linked below - showing their 2-stroke G.P. bikes from over a 1/4
century ago, current Moto GP bikes are still nowhere near the (non-assisted, as Mick Doohan
pointed out, other than by the rider's proprioception & reaction time skills) power-density of
those Championship-winning 2-stroke G.P. bikes...
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