Fu**'n magnets, how do they work?

carries an axe

meat bone meat meat meat
Adam, you would also be able to trigger stubborn traffic light detectors!
I'll be a God damn superhero
Strongest Rare earth metal magnets would be N52 grade magnets.

https://www.amazon.com/CMS-Magnetics-Neodymium-Magnet-Inches/dp/B000UU8VVA


or

https://www.amazon.com/Piece-Powerf...coding=UTF8&psc=1&refRID=YNYN9S9XCGW3155C4X1E

depending on what shape you like. They are hard to lift from one another but you or your caregiver should be able to slide them, probably

50 lb seems a bit much but your second link is 18 lb so I think I'll try that weight range first
 

byke

Well-known member
Think I actually have a few strong bastards, maybe nickel coated neo's, but I think a little smaller OD than 1". I'll measure, but you could have a couple for testing. Maybe they'll be what you need, or maybe they'll help guide you to what you need.
 

carries an axe

meat bone meat meat meat
Yes, this. You can bond on the exact amount you need to do the job. Magnets pull hard but slide easy, velcro will stick.

I use velcro for a lot of things but with the amount of removal I go through it would all wear out in about a month also it tends to collect a lot of gross detritus
 

Blankpage

alien
Why not simply use some sort of strip for a toe guard instead of going all science and reinventing the wheel.
 

wickedtl

BeerPong Champ '07 - '11
Depending on the forces involved in your leg spasms, I think the hardest part will be keeping the magnet in your shoe from breaking away from the epoxy and sticking to the magnet in the footrest. It will work better if you can mount the shoe magnet from the inside of your shoe, and maybe fill the inside hole with caulk.
 

carries an axe

meat bone meat meat meat
Have you thought of adapting bicycle shoes and clips?

Just a thought.

Thought about it, but it was going to be too expensive to scavenge them out of the bicycle shoes and pedals compared to the cheap magnets trial.

Nick is right also that it would be hard for me/ caregiver to figure them out
 
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carries an axe

meat bone meat meat meat
Depending on the forces involved in your leg spasms, I think the hardest part will be keeping the magnet in your shoe from breaking away from the epoxy and sticking to the magnet in the footrest. It will work better if you can mount the shoe magnet from the inside of your shoe, and maybe fill the inside hole with caulk.

I'll try that but I'm not sure how deep into my shoe I have to drill for that to still hold with the 18 lb magnet
 

TylerW

Agitator
I'd like to think that some 1/2" neodymium magnets would hold pretty fast. I don't know what the shear force of your spasms are, but I use them to hold my barn door style closet doors in place, and they're about 50 lbs a piece.

Other consideration: 3m Dual Lock. It's like velcro but 100x better. It wont gum up with fibers or dirt or whatever else, but it could be damaged if your shoes or chair steps encounter any alternate forces. Also your caregiver will need to positively lock your shoes to the chair.

Oblique consideration: There are some electromagnetic door strikes that only take 12v. You should be able to power them from one of your chair batteries (I think they're 12v) and they hold so goddamn fast they're near impossible to break. They'd require some machining of your pedals and some extra wiring, but they might do the trick.
 

Entoptic

Red Power!
Why not use snowboard bindings and strap yourself in? Maybe screw a pair of shoes to the plates? I use that for stilting.
 
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shouldnthave

Taze away, Yana...
I use magnets in my shop all the time. Check out www.magnetshop.com

That's where I buy all my goods. I think you should just go with Neodymium ring magnets. That way you can just screw them to whatever you want through the center. Don't go too big though. I have a few 2" rings that would take a finger tip off if they snapped together with you in the middle.
 

m_asim

Coitus Infinitum
I can't believe nobody posted this. KS is slacking!

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