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magnetic toe clips

Old 07-18-22, 04:31 AM
  #26  
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The quote I posted above and here again, from was the first site I googled out of bored curiosity. While in theory any foot retention device can come unintentionally disconnected, it would likely be due to malfunction or user error, not because it is the nature of the beast.

Unintendedly [sic] disconnecting from the pedals is possible at any time
I suppose these have a use to somebody as there are several people making them apparently. But unintentionally disconnecting at any time isn't what I look for in foot retention.
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Old 07-18-22, 07:02 AM
  #27  
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Originally Posted by terrymorse View Post
There is no way that a magnet is going to hold a shoe as securely in every direction as a mechanical connection.
Don't argue with me. Argue with the people (smarter than me) making the damn things. Thankfully, I've never crashed with SPD pedals because on the two or three occasions that I was about to, I've been able to get free of both Eggbeater AND Shimano clipless pedals while fully clipped in! Doesn't NASA use magnets to hold priceless astronauts securely in place on spacewalks?
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Old 07-18-22, 07:10 AM
  #28  
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I doubt these are on par with anything NASA uses.
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Old 07-18-22, 08:19 AM
  #29  
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Originally Posted by jlat View Post
Hello people: While on the net, a pop-up came for them. No clipping in just place your shoe on it and you're in. What do youz think about that?
IBBY
Staple duct tape sticky side up, would work bettter than your magnet
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Old 07-18-22, 08:36 AM
  #30  
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Originally Posted by chaadster View Post
how to overcome such sufficent retaining force to make rleasing easy, natural, and safe. .

make it an electrical magnet with nice thin wound coils carrying a lot of current, that way a kill switch cut the current and bam no magnet,

All you need is just to haul a big battery or a generator behind your bike, your problem solved very smart way
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Old 07-18-22, 09:31 AM
  #31  
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The magnets would pick up FOD off the road. They also might confuse your magnetic speed and/or cadence sensors.
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Old 07-18-22, 11:57 AM
  #32  
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Originally Posted by Eds0123 View Post
make it an electrical magnet with nice thin wound coils carrying a lot of current, that way a kill switch cut the current and bam no magnet,

All you need is just to haul a big battery or a generator behind your bike, your problem solved very smart way
You mean like this?

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Old 07-18-22, 02:29 PM
  #33  
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We should have a pool, poll or contest as to how this one plays out. "Disappeared" w/o explanation or apology, excused and protected until he tires of it, or an honest "yep, he slipped in but we did the job and whacked him." Precedent for all options so it will be interesting to watch.
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Old 07-18-22, 02:35 PM
  #34  
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Originally Posted by CroMo Mike View Post
The magnets would pick up FOD off the road.
IKR. I often get roadkill stuck to me thanks to my animal magnetism. *rim shot*

I’ll be here all week, ladies and germs. Make sure you try the veal.
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Old 07-18-22, 02:59 PM
  #35  
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Originally Posted by Koyote View Post
OK, so I’m not the only one who’s put that together.
if you're thinking what i think you are thinking then i don't think so.

hmmm...might need to re-think that.
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Old 07-18-22, 03:05 PM
  #36  
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Originally Posted by spelger View Post
if you're thinking what i think you are thinking then i don't think so.

hmmm...might need to re-think that.
I think you need to re-think that thing you were thinking.
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Old 07-18-22, 03:08 PM
  #37  
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"FOD" in aircraft lingo is Foreign Object Damage .... objects left on the runway. In this case, ferrous metal road debris capable of being picked up by a magnet. Even small bits of debris sticking to the surface of the magnet would reduce its mating effectiveness and require stopping to find the offending FOD and wipe it off.
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Old 07-18-22, 03:09 PM
  #38  
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Originally Posted by jlat View Post
What do youz think about that?
I thought you'd left?
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Old 07-18-22, 04:39 PM
  #39  
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Originally Posted by Koyote View Post
You mean like this?

Yep, exactly, 😃
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Old 07-18-22, 07:53 PM
  #40  
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Originally Posted by spelger View Post
if you're thinking what i think you are thinking then i don't think so.

hmmm...might need to re-think that.
Originally Posted by Koyote View Post
I think you need to re-think that thing you were thinking.
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Old 07-18-22, 08:25 PM
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Old 07-18-22, 08:34 PM
  #42  
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Old 07-18-22, 09:31 PM
  #43  
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There are at least two companies making these. I spent a little bit of time trying them out at Sea Otter a couple of years ago. They actually worked far better than I expected. For me, the deal killer was the stack height. But it isn't as crazy as one might at first guess.
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Old 07-18-22, 09:40 PM
  #44  
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Originally Posted by Polaris OBark View Post
There are at least two companies making these. I spent a little bit of time trying them out at Sea Otter a couple of years ago. They actually worked far better than I expected. For me, the deal killer was the stack height. But it isn't as crazy as one might at first guess.
Finally the voice of experience breaks through the nonsense. Bravo.
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Old 07-18-22, 11:18 PM
  #45  
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Originally Posted by chaadster View Post
I would be very surprised if that were true.

In fact, I think I’d wager good money that there certainly are magnets strong enough that, when sized to fit the area of a typical cycling pedal, could resist any amount of pull force a rider might generate.

For example, here are 1.25” diameter round magnets with up to 95lbs pull force available on Amazon. A magnet on the shoe working with a magnet on the pedal would be expected to have even higher pull force. I would be very surprised if anyone was pulling their foot off the pedal with anywhere near that kind of force.

I’d further wager that the major obstacle in magnetic pedal/shoe attachment is not generating sufficient retaining force, but rather how to overcome such sufficent retaining force to make rleasing easy, natural, and safe.
I had to OD on vitamin B12 to give you an answer concerning "unclipping" with magnets so pay attention to this:

Get two bar magnets. Make one stand on the south pole and another on the north pole. Get them close together and they attract and stick together.

If you're using Neodymium magnets, it will be very hard to pull them apart.

NOW. Hold one of the magnets while you twist the other 90 degrees and voila, magnetic pull is completely gone!! You finally pulled apart your neo magnet stuck for years!

I would guess using the same principle for magnetic foot retention, you simply have to twist your foot outward to unstuck.

"Clipping in" is a lot easier though. You simply place the ball of your foot on the pedal and the magnets will grab each without the need to twist your foot. The one BIG problem with this tech is with powerful magnets, the two magnets will smash towards each other with incredible impact force sending shockwaves throughout the bike. I doubt it would last very long and may even cause your pedals, crankset and BB to get loose at the bolts and start falling apart.

Last edited by koala logs; 07-18-22 at 11:23 PM.
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Old 07-19-22, 12:16 AM
  #46  
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Originally Posted by koala logs View Post
I had to OD on vitamin B12 to give you an answer concerning "unclipping" with magnets so pay attention to this:

Get two bar magnets. Make one stand on the south pole and another on the north pole. Get them close together and they attract and stick together.

If you're using Neodymium magnets, it will be very hard to pull them apart.

NOW. Hold one of the magnets while you twist the other 90 degrees and voila, magnetic pull is completely gone!! You finally pulled apart your neo magnet stuck for years!

I would guess using the same principle for magnetic foot retention, you simply have to twist your foot outward to unstuck.

"Clipping in" is a lot easier though. You simply place the ball of your foot on the pedal and the magnets will grab each without the need to twist your foot. The one BIG problem with this tech is with powerful magnets, the two magnets will smash towards each other with incredible impact force sending shockwaves throughout the bike. I doubt it would last very long and may even cause your pedals, crankset and BB to get loose at the bolts and start falling apart.
You could have saved yourself the hassle by looking at existing mag pedals.
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Old 07-19-22, 12:18 AM
  #47  
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Originally Posted by Polaris OBark View Post
There are at least two companies making these. I spent a little bit of time trying them out at Sea Otter a couple of years ago. They actually worked far better than I expected. For me, the deal killer was the stack height. But it isn't as crazy as one might at first guess.
The weight of mag pedals makes them a non-starter for me, regardless of everything else.
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Old 07-19-22, 05:05 AM
  #48  
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Originally Posted by chaadster View Post
You could have saved yourself the hassle by looking at existing mag pedals.
I probably didn't take enough vitamin B12
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Old 07-19-22, 10:36 AM
  #49  
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Originally Posted by rsbob View Post
Finally the voice of experience breaks through the nonsense. Bravo.
Thanks.

These are the ones I tested out at Sea Otter: https://www.j-pedals.com



What I found the most interesting and compelling was the case of the rider with a prosthetic leg, which is described on their website.
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Old 07-19-22, 10:41 AM
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Originally Posted by chaadster View Post
The weight of mag pedals makes them a non-starter for me, regardless of everything else.
J-pedal: Weights are 200g per pedal, and 40g per metal cleat, and 16g per plastic adapter. So, 256g per side, or 512g per pair.

My favorite flat pedals are 430 g/pair, so this isn't a hugely different.

My favorite clip-ins are XTR trail pedals are 400 g without cleats.
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