Yamaha RA31A 125cc V4 in Imatra memorial GP 2010
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All Comments (15)
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@pbpaulieb Looks like an MV Agusta, not sure....
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only that I wish I had an engine that sounded like that.
I would just rev it and orgasm.
then probably have to fix it when it seized... as it they would...often!
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Some specs.....Magnesium engine and carbs(22mm Mikuni's)--35x32.4mm bore and stroke-- Lube fed by 12 pressurized oil lines--44hp@17,500rpm-- 9 or 10 speed gearbox--gross weight 232lbs or 105kg--Top speed 140mph !!
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Awesome bike , i did not know that it exists . ,
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@eamh2002 It sounds pretty nasty but I'm sure wars are good for technological advancements. Peace is like rust. Nations have to prove they are better than other nations. For the economy, war is distastrous however. And for the victims of course...
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I think Japan was more advanced in 1960's than europe right now. Blame the wars :)
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awesome technique, 4 tiny pistons, watercooled, rotary valve, and all those gears! Japan was technologically more advanced then Europe was in '65.
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This is the great pursuit of POWER only, bring these V4 machines back and they'll push 60hp soon with todays knowledge :)
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2-Stroke sounds, that's music!
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Can anyone comment on the coolest AND rarest video ever made please ?? !
twostrokeornill1 1 year ago 7
This bike managed a 100mph lap of the Isle of Mann in 1968. 500cc machines of the day Could Not achieve this !!!
twostrokeornill1 8 months ago 5