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Boosted Boards (YC S12) Unveils Its Magical Electric Skateboard

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101–110 of 172 posts

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

#101
post #90

Since the motors aren't direct drive, what happens when the belt gets wet or the trunks flex and the belt slips off?

Looks like they're toothed belts, so they should perform OK when wet.

It also looks like they have a belt per wheel, so there's a good deal of redundancy. Because there's apparently no differential gearing it means you have to lift up the outside wheels in tight (e.g. walking speed) turns, but that often happens naturally anyway on a skateboard.

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

#102

Something I've always wondered about longboarding as a form of transport. What do you do if you're going downhill like in San Francisco?

I saw an invention once which was a foot-operated brake for the back wheels of a long board. I think it had tiny drum brakes for the wheels or something like that. It had a big metal heat soak to absorb the heat from braking. Given I've never seen one, I guess it flopped.

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

#103
post #98
post #91

Earlier quoted context omitted.

As a cyclist, 15 deg incline is steep. Honestly, steeper than all but rural roads and even then rare. There might be some hills like that in SF. Even in the mountains, graded switchbacks are not nearly that steep, for the most part. Which beings me to who and why would you want to ride down something so steep on a skateboard? I have a hill a mile from my house, thats ~200 vertical feet, and a around a 1/4 mile, its 1…

SF actually has streets that reach over 30 deg incline.

Yes, with stop signs =D. And Cable car Tracks. And Cross-traffic. LOL.

Bottom line = 30 degrees is sketchy, even ATGATT, on a Motorcyle.

___________

[Edit] Citaton: Just how steep is this?

A large avalanche in Montroc, France, in 1999, 300,000 cubic metres of snow slid on a 30° slope, achieving a speed of 100 km/h (60 mph). It killed 12 people in their chalets under 100,000 tons of snow, 5 meters (15 ft) deep. The mayor of Chamonix was convicted of second-degree murder for not evacuating the area, but received a suspended sentence.

TL;DR: Avalanche Risk? = Don't skate !

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

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

#104

"Nothing’s scarier than getting going too fast down a hill on a skateboard." Actually if you know how to power slide, going down hills is actually quite fun. Also, is this a full electric board, or do you have the option of pushing and then you can use the motor when you want to?

Since the motors are engaged full time (no freewheel) and are self-exciting, they're going to give some drag due to iron losses, which is magnified by the gearing of the belts, as well as some stored angular momentum.

So I think it could work as a non-powered board, but not very well.

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

#106

These contraptions are illegal to use in public and if they become popular the laws against them will be enforced immediately, because they're incredibly dangerous. It is impossible to provide effective braking on a skateboard. The rider has absolutely no means of impeding their forward movement, so even if the board has effective brakes it's just going to throw them off. This is a minor problem if you're rolling aro…

Sounds like you've never ridden a skateboard or done so for only a very short time.

That's my guess. You just plant one foot on the back, lean backward and Scraaape you're stopped.

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

#107
post #61
post #25

Add a handle, a steering device, a seat, and make it wider, and I would definitely buy one.

Are you looking for a moped maybe?

If you added doors, a roof, and a few more seats to a moped, that would be my perfect vehicle.

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

#108
post #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.

A great way to train yourself for the type of lateral position front/back balance needed for all types of boarding (skate, snow, surf) is the Indoboard.

http://indoboard.com

I'd recommend the longer "Pro" model if you're targeting longboard skateboarding.

It's amazing how much Indoboard helps. It will quickly give you an innate sense for where to position your feet, how far forward or backward to lean, and (for a shortbaord) when you're approaching that "oh shit" threshold where the board will fly out from your feet like a banana.

After that, get a longboard and start slow in as much empty pavement space you can find. Try to always keep your knees bent. Start with kicking in front (i.e. the way you're facing) with your back foot instead of in back with your front foot.

Beware of cracks.. beware of hills- even gradual ones. Mentally prepare yourself for some bloody knees, elbows, and palms. Enjoy- it is a really fun way to get around short distances.

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

#109

These contraptions are illegal to use in public and if they become popular the laws against them will be enforced immediately, because they're incredibly dangerous. It is impossible to provide effective braking on a skateboard. The rider has absolutely no means of impeding their forward movement, so even if the board has effective brakes it's just going to throw them off. This is a minor problem if you're rolling aro…

>Americans remain inexplicably certain that cycling is not for them.

You seem to take this product as a personal attack on cyclists. The more unconventional vehicles on the road, the better for everyone.

Longboarders have been commuting at high speed in traffic for decades, this is no different.

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

#110
post #98
post #91

Earlier quoted context omitted.

As a cyclist, 15 deg incline is steep. Honestly, steeper than all but rural roads and even then rare. There might be some hills like that in SF. Even in the mountains, graded switchbacks are not nearly that steep, for the most part. Which beings me to who and why would you want to ride down something so steep on a skateboard? I have a hill a mile from my house, thats ~200 vertical feet, and a around a 1/4 mile, its 1…

SF actually has streets that reach over 30 deg incline.

Wrong. 30% grade != 30 deg incline.
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