Hi and
to the forum.
I think the Brammo Empulse R was the first electric production motorcycle to exceed 100 mph, and that had a 40kW output and a six speed gearbox.
I think you would be lucky to hit 80 mph with a 10kW motor, and pulling away on an incline would be very slow if it was geared to achieve a theoretical 100 mph.
The biggest drawback with electric motors
(excluding the weight of the batteries required to power them) is that the torque reduces as the speed increases, therefore it is difficult to produce the required torque at high speed without very high gearing.
My Vectrix Electric scooter has a 30Ah 125V NiMh battery Pack and weighs 460 lb, and its top speed is currently limited to ~73mph, and its motor has a peak output of 20.2 kW
(27.1 hp).
Without a 20mph tailwind, I don't think it would get anywhere near 100 mph on the flat
(even with much higher gearing) due to the huge increase in wind resistance at higher speeds.
The power required to overcome aerodynamic drag increases with the cube of the velocity, therefore eight times as much power would be required to overcome the aerodynamic drag in order to double your speed.
As an example, if a bike uses 5hp to maintain a steady speed of 50mph on a level road, it would require ~40hp to maintain a speed of 100mph on the same level road.
I suggest you do some further research before parting with your hard earned money to avoid disappointment.
With your proposed setup, the 100 mile range should be realistically achievable, but not the 100 mph top speed.
Alan
