Does a Bigger Motor mean more speed???

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poolman10
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Does a Bigger Motor mean more speed???

Hi,
I have a G1 electric skateboard that I modified to 36v, I took off the board and added 10" put in 3 12v 12ah led acid batteries, a 36v 500w speed controller, but left in the 24v 200w motor, It works fine,goes 16 to 19 mph, My question is if I change the motor to a 600w 36v will I gain any speed? Or will I just gain torque, without changing gear ratio...
Thank-You,
Todd Owenboard 3.JPG

sixpax2k9
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Re: Does a Bigger Motor mean more speed???

If the increase to 36V also increased the max speed of the board then no, you would not gain any speed. But, unless the motor can handle the increased voltage for a long period of time you may blow up the motor. If the 24V is a modest rating you should be fine.

Normally, to increase the torque/acceleration etc. you need to increase the Amperage. The only way to do that is by modifying the existing controller or getting a new one.

If going to the 36V didnt do anything, then that means either the controller or motor is limiting the voltage to 24V regardless.

Hope this helps.....

Dave ; Tennessee
XB-600.

poolman10
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Re: Does a Bigger Motor mean more speed???

Thank-You,
The increase to 36v gave me another 5or6 mph, but I also went from a 200w controller to a 500w controller, So will a higher watt motor increase speed??

andys
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Re: Does a Bigger Motor mean more speed???

If you went to a motor that was truly a higher watt output, it would increase your power output.. Looks like you might be able to fit a 500 watt motor in there. Here is another thing though. if the 500 watt motor was rated for 36 volts, it may not go at as high a speed as a lower watt 24 volt motor run at 36 volts. That is because when you over volt the motors, they tend to run at a higher rpms=more top speed. They generate more heat and wear the brushes out faster too. I remember some guy at the pocket bike forum was running a 36V Razor MX500 500 watt dirt bike at 60 volts. His top speed went from 16 MPH to nearly 30! the motor got hot enough to burn your hand after a short ride though, and probably won't last very long..

dogman
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Re: Does a Bigger Motor mean more speed???

Yes and no. It can get complicated to give an answer unless you get real specific. Basicly, you will go faster by pushing more watts through the motor. If the smaller motor can do it without frying, you don't need a bigger motor. Often the simplest way to increase speed is to increase voltage. The same amperage controller, and same motor will go faster with more voltage. After all, the voltage increase ends up giving a higher wattage. So a higer voltage controller and another battery is a good starting point for more speed.

At some point, your motor will fry pretty quick if you have too much wattage going through it so then a bigger motor is required. The longer the ride will be matters too, with a large motor being able to go further at a high wattage than a small one. If you got a bigger amperage controller as well as higher voltage, you are even more likely to gain some speed with a bigger motor.

The bigger motor may be able to have more speed and torque since you already increased the voltage, especially if the small motor is not drawing all the watts you now can provide. You did the first two, so go ahead and put in the motor. If nothing else, it will not overheat so quick with a bigger motor.

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poolman10
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Re: Does a Bigger Motor mean more speed???

Thank-You,
I posted this in the board section and got no reply for a week...
I ride the board about 4 to 5 miles every day with my wife lagging behind on her bicycle, and the motor doesn't seem to get unusually hot, So I thing I will be fine, Got another board on the way, that I bought off Ebay it is 36v, but don't know the watts, if it is higher than 200, and the bolt pattern is the same, may do a quick swap to see if I get an increase.. Thanks Again for The Help

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