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Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

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51–60 of 172 posts

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#51
post #41

Why is there an obsession with calling things "magical"? Technology is the opposite of magic. The word "magical" both creates unrealistic expectations and handwaves over all of the incredible technology inside.

I've ridden the board.. calling it magical is not a stretch.

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#52
I have to wonder though, that kickstarter may not be the best platform for them to get funding for such a project. It seems that most people fund projects on kickstarter because they wish to receive a sample of the soon to be made product, however in this case a long board seems to be geared towards a younger audience, of which usually wouldn't have $1100-$1200 to spend on such a luxury good. Great work though! Would definitely be interesting to see people ride uphill.

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#53
post #30

Some context: The average electric bicycle has a 300 watt motor. These baby's have 2000 watt motors (or 2 x 1000 watt motors, I couldn't tell) that are roughly a 5th of the size of an electric bike motor. Include a battery big enough to power that motor and the fact that they're adding regenerative braking, which electric bikes don't have, and this is a seriously awesome engineering challenge.

Trek's Ride+ uses regenerative breaking. http://www.trekbikes.com/us/en/collections/electric_assist/f... TBH, it's not that big of a deal (over-hyped). P.S. I only mean regenerative breaking isn't that big of a deal. This product actually looks pretty cool to me.

I wonder how the Trek Ride+ does on hills?

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#54
Anybody not know how to skateboard, but would rather do it because of the form factor?

What I'm trying to say is: Is there a long board riding tutorial for people who just want to slowly roll around, aren't really in the "skater" scene?

In the promo video they're getting onto CalTrain. I'd love it for the quick ride over to BART/CalTrain station.

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#55

Earlier quoted context omitted.

Wow. Which leads one to ask, could you just take the motors off the board and put them on a bike? What's the new tech that makes these motors possible?

Brushless motors. You could put them on a bike but then you'd break the laws governing electric bicycles (500w or 1000w limits depending on the jurisdiction).

Couldn't you get around that by calling it a moped rather than a bicycle?

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#56

Earlier quoted context omitted.

This is a bit different, I believe. Segways just do not look cool, and you would be kind of embarrassed riding one, unless you really don't give a fuck what the world thinks. These on the other hand are cool enough that you are ride them without looking like a clown.

Interesting fact: in Prague there are people offering sightseeing tours on Segways; it seems to be quite popular there.

There's tours like those in quite a number of big cities, including San Francisco. Whenever I was in the city, I'd see them all the time.

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#57

I have been riding an electric skateboard through Copenhagen for a few years (Evo 600: http://en.evo-skate.com/street600wood/ ). We have great bicycle tracks all over the city which is ideal. The principle of the board is the same, board strapped with an electric motor, controlled by IR remote in the hand. I'll share a few thoughts. First off, my board has a 600 watt motor and does around 20mph, which is fast in the…

On motor power, note that the power rating of a motor is usually the maximum continuous power the motor is rated for, ie without overheating. Just because a motor is 2000W as opposed to 600W, doesn't necessarily mean it will use any more power for a given job it is being asked to do. Your 600W motor could produce 2000W too if you were to nearly double the voltage, but it might overheat. Regardless, the power they draw is the power asked of them. For example, your skateboard might be 200W continuous when travelling at a constant velocity, and both motors in this case will only use 200W, or rather a bit more because they're not perfectly efficient. Which brings me on to efficiency. Different kinds of electric motors have different characteristics, but it's usually the case that they will have a maximum efficiency at a lower power than maximum power. The designers of this skateboard might have chosen their 2kW motor such that it is operating at maximum efficiency at the power they are expecting it to need to produce to propel humans around. In this respect the range of the 2kW skateboard might actually be greater than the 600W skateboard, everything else being equal.

That said, 2kW is a lot of power! If all that could be instantaneously put down without wheel spin by a skateboard, I image it would shoot out from under your legs like a bullet out of a gun. Fun!

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#59
post #8

"all I could think was that this will change how we interact with our cities." Anyone else reminded of Dean Kamen's predictions for the segway?

If the Segway was about a thousand bucks, way smaller, and more thrilling to ride... well, I'd buy it.

Re: Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

#60

Earlier quoted context omitted.

Brushless motors. You could put them on a bike but then you'd break the laws governing electric bicycles (500w or 1000w limits depending on the jurisdiction).

I'm not familiar with how a bike mounted motor can be tested, but unless the motor has '2000w' stamped on it, you're good to go.

http://en.wikipedia.org/wiki/Dynamometer
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