Wattage
Under 250W
250W to 400W
400W to 500W
500W to 600W
600W to 800W
800W to 1,000W
1000W to 1200W
Amperage
Under 4 mAh
4 mAh to 6 mAh
6 mAh to 8 mAh
8 mAh to 10 mAh
10 mAh to 12mAh
12 mAh to 15 mAh
15 mAh to 18 mAh
18 mAh to 20 mAh
1200W to 1500W
Many electric skateboards I have been on have a wobble problem at lower speeds than others. I can expect a wobble over 20mph but the ones that wobble under 20 its just not cool. The really wobbly ones have really cheap trucks and bushings that I have been on. When I took it to the skate board repair show, they told me that the components on it were crap. And what was I going to expect.

Their are some that have softer bushings on the front and harder on the back. When teh bushings are softer it turns more easily and has a better time turning sharp turning radiuses. The harder the bushings are the more stable the electric skateboard goes at higher speeds but it is more hard to maneuver.

Also, about balance, when the motor is jerky its easy to lose balance when going at high speeds. When the breaks are jerky and don't come to a smooth break, it can cause balance problems too.

 I urge people to get the names of the components of the board and if not familiar with the brands, ask a skate shop that will tell you the truth. People think often that I am going to tell people the brand I am promoting has the best components so this is why I tell people to ask a skate shop.
If anyone wants to do a video on a Hamboard, I have some videos that I need done. I will chip in if anyone is interested.
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CLASH OF THE TITANS
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ELECTRIC SKATEBOARD CONSUMER GUIDE