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Can Repelling Magnets Replace the Spring in a Pogo Stick?

kjmagnetics.com

131–140 of 149 posts

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#131
post #6

Seems like electromagnets could help compensate for distance by drawing more current when far apart, and less when close together. A microcontroller could essentially make the force linear like a spring. Of course, then you need wires hooked up to your pogo, and that might be scary if the microcontroller has a bug (or somehow fails) since you are now essentially hopping onto a railgun.

Honestly, someone might want to hop on a railgun. Extreme pogo

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#132
post #54

Earlier quoted context omitted.

I have used Tesla autopilot on twisty cliffside roads (my hands hovering an inch away). The question in my mind was, when there is "nothing" there, is that a place it thinks is okay to go? Or is it a place a place where it should absolutely not go? I wish it could just tell me that.

It doesn't know about dropoffs. It only knows about lane lines. It's really good at following lane lines. Sometimes right into an obstacle.

It knows about the driveable areas even outside the lane lines where it can go in the case of an emergency.

See: https://www.youtube.com/watch?v=il6LV4064bI

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#133
post #100
post #6

Seems like electromagnets could help compensate for distance by drawing more current when far apart, and less when close together. A microcontroller could essentially make the force linear like a spring. Of course, then you need wires hooked up to your pogo, and that might be scary if the microcontroller has a bug (or somehow fails) since you are now essentially hopping onto a railgun.

You don't have to think about buggy software to come up with death scenarios. What if a driver in the other lane is drunk or not paying attention? Another driver could kill you at any moment and there's nothing you could do to prevent it.

The dangers of operating a pogo stick on vehicle congested roadways are significant, but remain consistant across differing pogo technologies. This post makes no mention of making a pogo stick safer to operate on public roadways.

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#134
post #8

They should try this with electromagnets, and make the curve linear using electronics (and perhaps find the optimum curve in terms of fun when jumping around).

Wouldn't that consume a lot of electricity?

Maybe it's possible to apply a regenerative brake like mechanism?

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#135
post #48

Earlier quoted context omitted.

Elevators use simple physical safety systems. Which is why you see headlines like: "Skyscraper elevator plunges 84 floors — and everyone survives" https://www.cbc.ca/news/world/elevator-plunge-chicago-1.4913...

What's deadly is the other type of failure, where the counter weight causes the elevator to shoot upwards, like what happened in that elevator in Chile. There's a video of the guy confused as the doors continued to open/close at each floor. He had severe injuries. Apparently if that ever happens, your best bet is to lay flat on the floor with your hands covering your head, as the impact will launch you upward.

Thats how I usually approach stressful situations, so I should be fine.

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#137
post #6

Seems like electromagnets could help compensate for distance by drawing more current when far apart, and less when close together. A microcontroller could essentially make the force linear like a spring. Of course, then you need wires hooked up to your pogo, and that might be scary if the microcontroller has a bug (or somehow fails) since you are now essentially hopping onto a railgun.

About as scary as my Tesla on autopilot going around a curve at 75mph. Every time I ask myself, what if there is a bug or if it turns off...

... So don't use it?

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#138
post #67

Earlier quoted context omitted.

About as scary as my Tesla on autopilot going around a curve at 75mph. Every time I ask myself, what if there is a bug or if it turns off...

I know exactly what you mean. I will admit at 20mph over the speed limit going over a poorly maintained curve on the Mass Pike I usually just disengage for a moment and then switch it back on. It can take the curve, but it doesn’t feel good to let it. I’ve had it lose tracking on the highway. It just leaves the wheel in the last position and beeps very urgently to let you know to take over. I find autopilot helps me…

I just saw someone reverse their TM3 into their garage with their phone. Pretty neat! Definitely will be my next car to make my long commute bearable via autopilot tech.

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#139
post #40

Earlier quoted context omitted.

Aren't brakes and steering mostly manual? I don't think it's the right advice to tell people to trust Autopilot when it's failed in several egregious ways.

Steering is electronic.

sterring is electric, but there's always a backup system in case the electronics fail: https://youtu.be/em1O8mz7sF0?t=276

Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?

#140
post #6

Seems like electromagnets could help compensate for distance by drawing more current when far apart, and less when close together. A microcontroller could essentially make the force linear like a spring. Of course, then you need wires hooked up to your pogo, and that might be scary if the microcontroller has a bug (or somehow fails) since you are now essentially hopping onto a railgun.

> you are now essentially hopping onto a railgun.

No, you're riding a coil gun. But your point stands.

https://en.wikipedia.org/wiki/Coilgun

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