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Pedals: Shimano M424 Pop-Up Feature? What Is it?

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Pedals: Shimano M424 Pop-Up Feature? What Is it?

Old 04-04-09, 07:38 AM
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TimH
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Pedals: Shimano M424 Pop-Up Feature? What Is it?

Hi

I'm looking for the best pedals to get for my bike. However I'm limited by the fact that I already have shoes with SPD SH-51 cleats in them. Also I would like a pedal that can use normal shoes as well as sometimes for me it isn't practical to use cleats (for shorter trips etc).

I was looking at the Shimano M424 Pedals. They say that they are
"Designed for all round use with pop-up binding mechanism for easy entry and release. Pedal can be used with normal shoes, as the binding is pushed flat and the resin cage supports the shoe."

I'm sorry for asking an 'obvious' question, but what does this pop-up binding mechanism mean?
If the pedal pops-up to allow entry, and then is pushed down when you clip-in, how do you get out and how do you get it to pop back up again?
Or if I use normal shoes and push down the binding, does it stay down all the time, even without a foot being placed on top of it?
How do I 'pop' it back up when I want to use the SPDs.

Does anyone have any other suggestions of pedals (have to accept SM-SH51 SPD cleats) that allow for normal shoes as well as SPD clip-ins. Thanks

Sorry for the silly questions. None of the websites seem to make it clear. Thanks for the help in advance,
Tim
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Old 04-04-09, 08:47 AM
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It is basically the M525 with a larger platform around it.

The "clipless" pedal is inside the platform and stands a little bit proud of the surrounding cage, if you are using shoes with clips, they clip right in, and you release by twisting your ankle.

If you are wearing flat shoes, the clip simply presses down.
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Old 04-04-09, 09:25 AM
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I have the Shimano M324s, which use a simpler, but less convenient approach: Platform on one side, cleats on the other.

But isn't it normal to replace cleats frequently? I don't see why you should limit yourself to your current cleats, unless you have more than one bike and need to keep them consistent. Otherwise, changing to a different type of cleat isn't a big deal, as long as they'll fit an SPD shoe.
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Old 04-04-09, 09:40 AM
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I have these. The 'cage' is spring loaded and presses against your shoes when you clip in I think. Doesn't make it difficult to clip out though.
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Old 04-04-09, 01:45 PM
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Does pulling up with your shoe not make it pop back up?

I'm sorry changing cleat isn't an option as I also use the shoes for spin class
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Old 04-04-09, 02:19 PM
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I have 424's on three bikes. The binding doesn't really pop "up" but actually pivots on it's axis so the front is raised a bit so you can clip in easier. Clipping in and out is easy and pulling up when pedalling is not affected in the least. One warning...If your shoes have cleats, they are more difficult to clip out with. I use cheap Shimano shoes (lace ups that look like sneakers) with the 424's. I have problems clipping out with my Sidi Dominators due to the side cleats so I have 525's on my road bike.
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Old 04-04-09, 03:11 PM
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Originally Posted by MAK View Post
I have 424's on three bikes. The binding doesn't really pop "up" but actually pivots on it's axis so the front is raised a bit so you can clip in easier. Clipping in and out is easy and pulling up when pedalling is not affected in the least. One warning...If your shoes have cleats, they are more difficult to clip out with. I use cheap Shimano shoes (lace ups that look like sneakers) with the 424's. I have problems clipping out with my Sidi Dominators due to the side cleats so I have 525's on my road bike.
What do you mean if the shoe has cleats? Wouldn't all clip-in shoes have cleats?

The shoes I have are Specialized Comp MTB shoes with recessed cleats. Would the fact that the cleat is recessed (as in the cleat is in the middle of two ridges so you can walk with the shoe on and not feel the cleat) make it difficult
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Old 04-04-09, 03:45 PM
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My have shimano mtb shoes aren't hard to clip out with, wouldn't worry about it.
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Old 04-04-09, 10:17 PM
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One warning...If your shoes have cleats, they are more difficult to clip out with.


[QUOTE=TimH;8665815]What do you mean if the shoe has cleats? Wouldn't all clip-in shoes have cleats?


You are correct. My mistake. I should have said studs. (Just a short trip back to my rugby days when the shoes were "boots" and the spikes were "cleats".) Sidis, like many mountain shoes have raised studs for traction that run down part of the shoe's perimeter in the forefoot and the raised studs catch on the cage a little.
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Old 04-05-09, 12:12 AM
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Oh sorry for misunderstanding! The word 'cleat' put me off but I understand fully now!

My shoes came with studs but I never put them on as I don't really need them. But the fact that they have recessed cleats won't make it difficult to clip out of the M424 Pedal, will it?
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Old 04-05-09, 12:15 AM
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Originally Posted by TimH View Post
Oh sorry for misunderstanding! The word 'cleat' put me off but I understand fully now!

My shoes came with studs but I never put them on as I don't really need them. But the fact that they have recessed cleats won't make it difficult to clip out of the M424 Pedal, will it?
Nope. I have M-424s on my Hybridized MTB and on my '07 Sirrus. Super easy to get into and release when needed..
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Old 04-05-09, 12:33 AM
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Thank you for the help everyone - now I just hope that the bike shop has them type of pedals. Otherwise I can probably go online

Now for another idiotic question - the M424 pedals are really more MTB pedals than road pedals, but my bike is a cross between road bike and mountain bike. Will the new pedal still fit? Are all pedals standard sizes to fit into most bikes? I'm 99% sure the answer is yes, but I'm just making sure!

Thanks in advance
Tim
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Old 04-05-09, 09:41 AM
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When I remove the pedals, do I have to grease the threads before installing the new ones.

I don't have the necessary grease.. are there any subsitutes (e.g WD40?) or is is absoloutely necessary?
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Old 04-05-09, 11:44 AM
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I searched my garage today (which has accumulated throughout the years with a lot of crap/rubbish/stuff/debris) and found a small tub labelled "Weldite Lithium Grease"
Will this do? The tub looks very old, and I have no idea why we have it, but it still seems to be moist. It has a pasty texture, almost like soft butter or Sudocrem, and it's a creamy, off-white colour (almost tan).

Will this do the job?
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Old 04-05-09, 11:56 AM
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Yes, the lithium grease will work, it has for me at least.
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Old 04-05-09, 03:29 PM
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It's better to use anti seize compound...........
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Old 04-06-09, 09:03 PM
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Originally Posted by TimH View Post

Does anyone have any other suggestions of pedals (have to accept SM-SH51 SPD cleats) that allow for normal shoes as well as SPD clip-ins. Thanks

Sorry for the silly questions. None of the websites seem to make it clear. Thanks for the help in advance,
Tim
If your pedals accept the 51 cleat, they will accept the 56 as well. The 51 releases by twisting the heels outward. The 56 is multidirectional. Am I misunderstanding the problem?
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