Honda V3 ..is this real??
- Thread starter MacDoc
- Start date
It appears to be at a late stage of development, evidence being the apparently quite detailed CAD models. What they end up doing with it is anybody's guess, with "nothing" still in the realm of possibility.
The theory for how they get this thing to balance is interesting, though I'm not quite buying into it. Without a balance shaft spinning the other direction, there's some unresolved first-order shaking vectors no matter how you orient the balance weights on the crankshaft. I suspect they're transforming the vertical shake into a horizontal shake of minimised magnitude, which is less objectionable but still there. Honda has experience with asymmetrical V-engines in the form of the RC211V which was very successful.
My back of notepad calcs based upon specs stated in the video suggest the electric supercharger would need up to somewhere around 3 kW of power intermittently. If it's on a 12 volt circuit, that's 250 amps. Ouch. There has to be something going on with the electrical system that they haven't described yet. If it's using 48 volt electricals (some automotive mild-hybrid systems do this) that cuts the amps down to 62.5ish, which is still quite a bit but manageable. There's a reason the Kawasaki H2 uses mechanical drive for its supercharger. If it's part of a "real" hybrid-electric powertrain with a 400-ish volt electrical system, then that supercharger drive becomes a trivial addition to the main drive system ... they just haven't told us about the electric main-drive-motor-and-battery side of it.
The theory for how they get this thing to balance is interesting, though I'm not quite buying into it. Without a balance shaft spinning the other direction, there's some unresolved first-order shaking vectors no matter how you orient the balance weights on the crankshaft. I suspect they're transforming the vertical shake into a horizontal shake of minimised magnitude, which is less objectionable but still there. Honda has experience with asymmetrical V-engines in the form of the RC211V which was very successful.
My back of notepad calcs based upon specs stated in the video suggest the electric supercharger would need up to somewhere around 3 kW of power intermittently. If it's on a 12 volt circuit, that's 250 amps. Ouch. There has to be something going on with the electrical system that they haven't described yet. If it's using 48 volt electricals (some automotive mild-hybrid systems do this) that cuts the amps down to 62.5ish, which is still quite a bit but manageable. There's a reason the Kawasaki H2 uses mechanical drive for its supercharger. If it's part of a "real" hybrid-electric powertrain with a 400-ish volt electrical system, then that supercharger drive becomes a trivial addition to the main drive system ... they just haven't told us about the electric main-drive-motor-and-battery side of it.
There is also the NS400R (edit: and NS500), although of course those were two strokes
