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Crankset with swapable spindles?

Old 05-17-24, 11:12 AM
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Crankset with swapable spindles?

I've previously posted my difficulty on finding 160-165mm crank arms for my fleet, previously using Square Taper BB's and whatever crankarms were available and/or cutting down larger ones.

I'm moving out of the Square Taper realm, everything is incompatable with each other.

Long story short, I need a system that has a swapable spindle.

I can find 165 length crank sets, I can find spindle lengths I need, in 170 and 175mm.

Most cranksets seem to be 2 piece which in my opinion is absolute horse poop.

I'm looking to upgrade 3 bikes with the same standard, 2 MTB and 1 Fat and maybe one other.

Are there any cranksets with a 24mm or 30mm spindle that can swap the spindle to different lengths for different spacings?

Any corrections on terminology would also be appreciated.
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Old 05-17-24, 11:18 AM
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If you have a 68mm bottom brackets any crank would work that is 24mm or 30mm you don't really need to swap spindles though I believe ROTOR had more modular cranks if you are trying to deal with different shell widths. With the HT2 style of cranks you don't need different spindles for the same shell width.

Give us some info on what you are dealing with in terms of shell widths and that will help people give you good info!
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Old 05-17-24, 11:23 AM
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Most cranksets seem to be 2 piece which in my opinion is absolute horse poop.
Don't poop on the 2 piece cranksets till you try them. They really take a lot of the guessing what works with what out of the process. Essentially all you need to know is what type BB shell is on your bike and the width of that BB shell. Also helps to look at road cranks for road bikes and mountain bike cranks for mountain bikes as there are some minor chain line differences for them at differing number of speeds on the rear that crank is made for.

​​​​​​​However, if you are wanting to do something non-standard for some unique reasons, then cartridge type BB's will give you more flexibility on that.
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Old 05-17-24, 11:30 AM
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The BB I'm having trouble with is 100mm fatbike

and I HAVE tried 2 piece.

It's fine for the 90% of people in 68mm BB's and can use 170/175mm spindle lengths.

I'm short. There's no changing that.

So a fat bike with short cranks is a rarity and so far for me, unobtainable.

I'm trying to move away from cartridge bearings, and even with those, only square taper has any variety of crank lengths.
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Old 05-17-24, 11:38 AM
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You don't want two piece, you don't want cartridge bearings. What do you want? Sounds like you will be stuck with the old square tapers with spindle and separate loose bearings.

I've got 165mm cranks on my bikes. What's the issue you are having. I've probably read your old thread, but there are so many others about the same subject, you will have to refresh us what exactly are the issues you have. Or link the thread for us.

Last edited by Iride01; 05-17-24 at 11:41 AM.
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Old 05-17-24, 06:49 PM
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Originally Posted by Iride01
You don't want two piece, you don't want cartridge bearings. What do you want? Sounds like you will be stuck with the old square tapers with spindle and separate loose bearings.

I've got 165mm cranks on my bikes. What's the issue you are having. I've probably read your old thread, but there are so many others about the same subject, you will have to refresh us what exactly are the issues you have. Or link the thread for us.
Read the original post please..


Nevermind everyone, I figured it out....
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Old 05-17-24, 07:09 PM
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I get what you are after. I suggest bringing the question to a reputable LBS & if they are unwilling to help figure it out with you, email some of the big named brands.
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Old 05-17-24, 07:32 PM
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Rotor and white industry are the only two I can think of, the rest of the companies are obsessed with having the spindle be a part of one arm, I'm sure to save a minimal amount of weight from the second bolt.
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Old 05-17-24, 07:40 PM
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Originally Posted by Russ Roth
Rotor and white industry are the only two I can think of, the rest of the companies are obsessed with having the spindle be a part of one arm, I'm sure to save a minimal amount of weight from the second bolt.
I would like the bicycle industry to work on making things that have an unnecessary large size & irregular shapes that are prone to catching & harboring debris to being more sleek, slim, & simpler versus just focusing on aero & weight. Not every road rider "races" & would like to benefit from real life benefits.
I'm sure if sleek, slim, & simpler were pioneered that less weight might come as an attribute.
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Old 05-18-24, 12:46 PM
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https://www.bikesmithdesign.com/Short_Cranks/

​​​​​​https://hostelshoppe.com/products/cj...xoCXMcQAvD_BwE
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Old 05-18-24, 02:53 PM
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Hope. https://www.hopetech.com/products/drivetrain/cranksets/ Now available in carbon fiber and as short as 155 mm!
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Old 05-18-24, 03:22 PM
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My question is what’s driving you out of the square taper realm? If it works, no need to change
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