Hyena wrote:korpin wrote:I have seen quite a few u tube videos where guys are using high wattage and getting 58 to 60 MPH something but the bomber is getting 48-50 MPH at half the wattage some of these guys are using which makes me think stealth is lowballing the power specs
It's pointless comparing the power or speed to a stealth bomber. This is just a bare frame that looks like a bomber. Sure, compare the weight and handling but as far as power and speed goes it may as well be a shopping trolly or pair of roller skates.
Power and speed comes from the battery, controller and the type of motor (size and winding) - so bolt on what ever suits your needs.
korpin wrote:Hyena...I do not think you understood my post regarding the stealth....it had NOTHING do do with the phasor frame....what I am saying is guys are using comparable motors to the stealth and running crazy voltages and amps up to 10,500 watts buy NOT getting much more speed...which makes me think these motors designed for bicycle type frames can only produce so much before they start converting the excess energy to heat....looks like even with the biggest BICYCLE hub motors,efficiency starts to drop off a cliff over 5000-6000 volts as regards wattage to speed from what I have seen so far....I think 4500-5000 watts with a hubzilla or stealth type motor and 100 volts and a great controller and 45-55 mph and 75-85 pounds and 10-20 amp hours is about as good as it gets for now unless you want a one mile dragster.....or a heavier motorcycle type bike...this is all based on what I see on the internet...I am waiting for my first bike
Korpin, keep in mind watts = amps x volts. Just because you know the watts, doesnt mean you know how they reached that number. 4000watts could be 100v 40amps, 72v 55amps, or even 48v 80amps. All of which would result in a drastically different top speed, wile maintaining the same watts. for the most part, your top speed is determined by volts. Amps is acceleration. So when you see a 100v 40amp (4000watt) bike and a 100v100amp (10,000watt) bike compaired; even though they will have close to the same top speed, the 10,000watt bike would destroy the 4,000watt bike in a race from 0-50mph . Similarly, if you had a 100v 50amp bike vs an identical 50v 100amp bike, the 100v50amp bike would have a much higher top speed, even though they are both 5Kw. Yes you are right, in that eventually you will hit a point of diminishing returns, where it will just create heat. This point will depend on the hub. Smaller hubs like the Magic pie, GM, BMC's etc... will not be happy over 4000watts (+-). Where as the larger hubs like the CroMotor, 540x 530x can take upwards of 10,000watts before issues. (This is provided you dont want to run full throttle for long periods of time, otherwise either of these hubs will burn up eventually. also, these figures are based off of a 100v setup. less volts = more amps = more heat.) . On my 5304 and 5403 i notice a HUGE difference between 100amps and 40amps. I tried to remember it with Voltage = Velocity. Amps = Acceleration. Hope this helps clear up your confusion.