Titanium Axle on an Shimano PD-M424 Pedal
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Titanium Axle on an Shimano PD-M424 Pedal
Hi
Anyone know if it is possible to buy/fit a titanium axle to a Shimano PD-M424 pedal? This is the pedal with flats both sides and mtb cleat system also both sides. It's sort of a do it all commuter pedal. There doesn't seem to be a lighter pedal option with all these features, so I'd like to make mine lighter by modding the axle.
Anyone know if it is possible to buy/fit a titanium axle to a Shimano PD-M424 pedal? This is the pedal with flats both sides and mtb cleat system also both sides. It's sort of a do it all commuter pedal. There doesn't seem to be a lighter pedal option with all these features, so I'd like to make mine lighter by modding the axle.
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I doubt anyone makes a Ti spindle for a pedal in that price range. But, not to be an idea killer if you do find something try to avoid the cheapy versions usually from China on Ali Express or similar. IME Cheap Ti is almost always guaranteed be poorly machined with rough bearing surfaces and sloppy threads. Also if you're planning on using these some of the time with soft-soled non-cycling shoes they won't be very comfortable with the small cage and cleat device protruding above the cage.
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I doubt anyone makes a Ti spindle for a pedal in that price range. But, not to be an idea killer if you do find something try to avoid the cheapy versions usually from China on Ali Express or similar. IME Cheap Ti is almost always guaranteed be poorly machined with rough bearing surfaces and sloppy threads. Also if you're planning on using these some of the time with soft-soled non-cycling shoes they won't be very comfortable with the small cage and cleat device protruding above the cage.
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Bad idea. Ti is not as strong per cross sectional area as steel, so a part designed to be made from steel but then Ti is swapped in will result in a significantly weaker part. If you are a very lightweight person then it might be OK, but for the absolute minimal improvement it's not worth the trouble - any trouble.
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Titanium is not a miracle material, it has definite downsides and weaknesses and needs to be designed to an application, not just substituted for steel.
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Bad idea. Ti is not as strong per cross sectional area as steel, so a part designed to be made from steel but then Ti is swapped in will result in a significantly weaker part. If you are a very lightweight person then it might be OK, but for the absolute minimal improvement it's not worth the trouble - any trouble.
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These things weigh about 475 grams a pair which over 100 grams more than Shimano's regular MTB pedals, the PD-M520 and PD-M8100. If you want to save significant weight, get another pedal style.
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Bad idea. Ti is not as strong per cross sectional area as steel, so a part designed to be made from steel but then Ti is swapped in will result in a significantly weaker part. If you are a very lightweight person then it might be OK, but for the absolute minimal improvement it's not worth the trouble - any trouble.
Getting a part made from a good quality alloy (and being certain that it's good stuff) will be expensive. The paperwork alone to certify that Ti stock is Ti-6Al-4V (Grade 5) would probably be a few hundred bucks. But it is machinable. From my viewpoint, not worth the effort. But if this sounds fun to you, don't let us naysayers get your down.
Last edited by WizardOfBoz; 05-14-21 at 08:03 AM.
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I'd buy these pedals if they had the same features as the PD-M424s but unfortunately they don't. Maybe I'll try titanium cleat bolts and plates to save a few weight-weenie grams but I don't fancy the bolt fittings rounding out as they are small and usually hex/Allen head not Torx. Manufacturer often don't say if they are the stronger grade 5 titanium either. The only pedal I'm aware of that is both double-sided flat and double-sided clip-in is the PD- M424.
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A quick review of pedals offered by Shimano confirms that their SPD offerings seem not to include Ti spindles. Their SPD spindles (even the XTR trim level) are about the same weight as what the OP has now. These pedals weight about one pound. If you want to go lower and stick with SPD, you can get a non-flat pedal like the Wellgo W-01 which weighs about a half a pound. If you want, there's a proprietary pedal where pedia and clip together weigh 138g - a bit more than a quarter pound. But everything I see with Ti axles is just the clip - no pedaling flat surfaces.
If this is a bike for racing, perhaps its worth shaving grams. If this is for general riding, commuting, and enjoyment, well.... Spending hundreds* to shave 4 ounces off the bike wouldn't be my choice.
*I'm guessing finding and having a machine shop do this will be hard and expensive. But you WOULD be the only guy with Ti axles.
If this is a bike for racing, perhaps its worth shaving grams. If this is for general riding, commuting, and enjoyment, well.... Spending hundreds* to shave 4 ounces off the bike wouldn't be my choice.
*I'm guessing finding and having a machine shop do this will be hard and expensive. But you WOULD be the only guy with Ti axles.