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.
Can Repelling Magnets Replace the Spring in a Pogo Stick?
11–20 of 149 posts
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#12Fully compressed I believe the opposite poles fields begin to attract each other, counteracting the matching poles repelling one another, and explaining the alternating pull force.
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#13TL;DR Yes but not very well. A spring made from magnets doesn't have a close to linear spring rate like a traditional coil spring does.
Coil spring + magnets = success?
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#14Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#15Seems 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.
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#16Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#17TL;DR Yes but not very well. A spring made from magnets doesn't have a close to linear spring rate like a traditional coil spring does.
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#18Fully compressed I believe the opposite poles fields begin to attract each other, counteracting the matching poles repelling one another, and explaining the alternating pull force.
This is easily solved by including a minimal height spacer between the two magnets to prevent them from getting too close.
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#19Seems 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.
Re: Can Repelling Magnets Replace the Spring in a Pogo Stick?
#20TL;DR Yes but not very well. A spring made from magnets doesn't have a close to linear spring rate like a traditional coil spring does.
But is it linear, from the data? They had two datapoints and projected from that sparse data a regression line.