need advice for carbon crank setup
12-08-21, 07:00 PM
#1
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need advice for carbon crank setup
My current setup
Crankset: Shimano Alfine Hollowtech II , 170mm crank arm length, 130BCD, Single Speed 48T with integrated chain guard
Bottom Bracket: Shimano Ultegra Press Fit sealed bearing unit BB92
I would like to keep the bottom bracket and just upgrade the crank arms & spider to carbon fiber for further weight reduction.
THM is very good but the price is unaffordable.
Any recommendation?
Crankset: Shimano Alfine Hollowtech II , 170mm crank arm length, 130BCD, Single Speed 48T with integrated chain guard
Bottom Bracket: Shimano Ultegra Press Fit sealed bearing unit BB92
I would like to keep the bottom bracket and just upgrade the crank arms & spider to carbon fiber for further weight reduction.
THM is very good but the price is unaffordable.
Any recommendation?
Last edited by singlespeedfold; 12-13-21 at 02:28 AM. Reason: correction
12-09-21, 09:00 AM
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Originally Posted by singlespeedfold
My current setup
Crankset: Shimano Alfine Hollowtech II , 170mm crank arm length, 130BCD, Single Speed 48T with integrated chain guard
Bottom Bracket: Shimano Ultegra Press Fit sealed bearing unit BB86
I would like to keep the bottom bracket and just upgrade the crank arms & spider to carbon fiber for further weight reduction.
THM is very good but the price is unaffordable.
Any recommendation?
Crankset: Shimano Alfine Hollowtech II , 170mm crank arm length, 130BCD, Single Speed 48T with integrated chain guard
Bottom Bracket: Shimano Ultegra Press Fit sealed bearing unit BB86
I would like to keep the bottom bracket and just upgrade the crank arms & spider to carbon fiber for further weight reduction.
THM is very good but the price is unaffordable.
Any recommendation?
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12-09-21, 06:34 PM
#3
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Originally Posted by TugaDude
My recommendation is to not do it. Are you a racer? If not, and weight is that big of an issue for you, I'd try to find other ways to achieve the reduction.
12-09-21, 06:57 PM
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Originally Posted by singlespeedfold
I'm not a racer but I need to carry my bike up the staircase every working day so I'd like to keep the weight minimum.
This is the general plan and pattern for weight training.
Not sure about options for the crankset but another swap of lighter wheel(s) could also be considered.
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12-09-21, 07:22 PM
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Originally Posted by singlespeedfold
I'm not a racer but I need to carry my bike up the staircase every working day so I'd like to keep the weight minimum.
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12-09-21, 07:22 PM
#6
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Originally Posted by joesch
Your getting stronger and I bet pretty soon you will need to add some weight
This is the general plan and pattern for weight training.
Not sure about options for the crankset but another swap of lighter wheel(s) could also be considered.
This is the general plan and pattern for weight training.
Not sure about options for the crankset but another swap of lighter wheel(s) could also be considered.
12-09-21, 07:28 PM
#7
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Originally Posted by TugaDude
That's cool. It's just that most of the people I know who went to carbon cranks weren't all that fond of them after the fact. And yours are already pretty light comparatively speaking.
12-09-21, 07:43 PM
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Keep an eye on EBay, as well as your local Craigslist. Cranks pop up all the time.
But, you have to set a budget. $50? $100? $200?
If you're planning on riding them hard, then research the brand a bit. Some brands have had inserts that came loose.
But, you have to set a budget. $50? $100? $200?
If you're planning on riding them hard, then research the brand a bit. Some brands have had inserts that came loose.
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12-10-21, 02:15 AM
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This past June I bought some super light Kuota cranks for one of my road bikes and I can say that I do feel a difference. I actually feel more of a difference than I did switching to a light wheelset. But my single speed bikes are steel and carbon cranks wouldn't look right on them
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12-10-21, 09:35 AM
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Getting past yays or nays for your choice of a crabon crankset - my thinking is that choosing one based on it having to be able to work with your existing bottom bracket may be a mistake. What you have is not particularly special and doing it that way limits your choice of cranks. I think it makes more sense to choose your crankset based on its own merits then get a correct BB to fit with it.
Good luck whatever you decide...
Good luck whatever you decide...
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12-13-21, 02:32 AM
#11
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Originally Posted by IAmSam
Getting past yays or nays for your choice of a crabon crankset - my thinking is that choosing one based on it having to be able to work with your existing bottom bracket may be a mistake. What you have is not particularly special and doing it that way limits your choice of cranks. I think it makes more sense to choose your crankset based on its own merits then get a correct BB to fit with it.
Good luck whatever you decide...
Good luck whatever you decide...
12-13-21, 02:35 AM
#12
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Originally Posted by CliffordK
Keep an eye on EBay, as well as your local Craigslist. Cranks pop up all the time.
But, you have to set a budget. $50? $100? $200?
If you're planning on riding them hard, then research the brand a bit. Some brands have had inserts that came loose.
But, you have to set a budget. $50? $100? $200?
If you're planning on riding them hard, then research the brand a bit. Some brands have had inserts that came loose.
12-13-21, 09:11 AM
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Originally Posted by singlespeedfold
I found most issues on carbon cranksets were about weak spider, so I will be looking for a GXPdirect mount on carbon crank arms too
I have a Specialized carbon crankset with an aluminum spider. I haven't had any issues with it, but the cranks with integrated spiders appear better built.
12-23-21, 07:59 PM
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Originally Posted by CliffordK
Some cranks will also have issues with metal inserts coming loose at pedals, and at the bottom bracket.
I have a Specialized carbon crankset with an aluminum spider. I haven't had any issues with it, but the cranks with integrated spiders appear better built.
I have a Specialized carbon crankset with an aluminum spider. I haven't had any issues with it, but the cranks with integrated spiders appear better built.
12-24-21, 03:11 AM
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Originally Posted by singlespeedfold
Finally I decide to go for a set of titanium cranks with GXP, and a direct mount chainring.
12-24-21, 12:38 PM
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Clark W. Griswold
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Originally Posted by Lazyass
Titanium cranks? Which ones are these? I've never heard of this. Seems like ti cranks would be a little flexy.
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12-25-21, 12:10 PM
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Originally Posted by Lazyass
Interesting. Wonder if the OP actually spent a thousand dollars haha
