Quote:
Originally Posted by Seeker
I suppose my point is that a 1968 Triumph Bonneville produced 46 hp and 37 ft/lb torque and only weighed 165 kg. The engine was based on Edward Turner's Speed Twin, a 1937 design. I'm sure by modern standards the 1968 engine would be considered "dirty" but allowing for cleaning up the engine emissions I would have expected more power (and less weight from the complete bike) from a new design. Still, it's always easy being an armchair critic who has never designed a bike in his life and I don't what their design goals were.
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Weight of bikes are given fully oiled and fuelled these days.
That figure for the 68 Bonnie is dry.
Add four imperial gallons of unleaded and fill it with oil.....
Oh wait a minute, it might not like ethanol blend unleaded, not as good quality or as potent as the old four star....