You can play with this
http://www.ebikes.ca/tools/simulator.html
and see what speeds you get.
You can also play with this
http://www.ebikes.ca/tools/trip-simulator.html
Left side, near the bottom there is INPUT TYPE click on Google Maps
Left click Zoom out which is the negative sign below the positive sign
Using the hand icon, move to your neck of the world.
Right click starting point, right click ending point, click X to close
It will automatically do a route for you but you just move the blue line to where your route is.
Speed is determined by
A) The "Turn Count" of the motor
B) Your controllers ability to handle battery voltage, like 36V versus 72V as an example. Some cont's have 60V limit, others dont.
C) Battery Voltage
A high rpm/voltage is a low turn count motor and they can handle more current (Amps) for longer periods of time because they have shorter and thicker wires that are called windings. On the opposite end, a low rpm/voltage is a high turn count motor which has longer and thinner windings that does not handle as much current or for the length of time as the first low turn count motor.
Lace that [high rpm/voltage is a low turn count motor] into a smaller diameter wheel means that your speed decreases but your torque increases: That is why you go with a [high rpm/voltage is a low turn count motor] doing it this way also means everything will run cooler. Your battery will require more "Discharge Current" when taking off.
http://www.ebikes.ca/tools/simulator.html?bopen=true&motor=MX4503&motor_b=MX4506
Take a look at your requirements and see what best suits your needs.
Direct Drive motors have no moving parts and are quiet and completely silent with a sinewave controller, but when no power is applied to the motor there is noticeable drag like riding with a flat tire. But you apply even the very slightest of throttle, say 1% throttle there is no drag until you run out of battery power then there is drag.
Geared motors have moving gears and can be heard. You can strip the gears. When no power is applied there is no drag, this is called freewheel. People around you can hear the noise of the gears, but its not that loud. Depends on the motor I guess.
Mid Drive motors have geared motors, uses your chain, crank, r.der., r.cassette/f.w. so they wear out faster then normally. Great for hill climbing, stop and go traffic, heavy cargo.
ebike11 said:
What speeds are u reaching with that mxus on 17"?