crank weight saving
 

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[Closed] crank weight saving

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 mrmo
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I have a Trek Superfly and that means i have to stick to a 24mm crank from what i can determine.

Currently it has a deore m627 which i have converted to single ring. but is a bit bashed up and tatty, it is functional though.

I am looking at the bits on the frame and thinking where i can save a reasonable amount of money for not a huge spend.

SLX and XT don't actually seem more than a handful of grams lighter, the Rotor 3.1 seems to save a little more but you are stuck with its weird ring pattern and limited choice.

Does anyone have any ideas, upto c£200 ish


 
Posted : 14/03/2018 1:21 pm
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SRAM XX1 on a GXP axle.


 
Posted : 14/03/2018 1:30 pm
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Yep, head over to SRAM for savings, spiderless 1x also


 
Posted : 14/03/2018 1:33 pm
 mrmo
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can anyone confirm whether eagle chainrings will work on an 11spd system?


 
Posted : 14/03/2018 1:41 pm
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12 speed chainring is 0.2mm narrower - will work no problem with a 11-speed chain.


 
Posted : 14/03/2018 2:01 pm
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XTR M970 if you can stand to have a used/worn item- they're light, they're strong, they have 104BCD so you can't fit a tiny ring but it's still fairly sensible. And they're cheap and don't have bloody sram BBs.


 
Posted : 14/03/2018 2:05 pm
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What about an older generation 24mm FSA k-force light 386 chainset.

I've one here that weights 537g with a 32t single.
Its a 3 bolt ring but FSA's own megatooth ring works with 11spd

For more common 4x104 rings, the FSA SL-k weighs 660g with 34t single

Both available BNIB on ebay. The k-force might come with a full ceramic BB also. I got 3 years out of the pressfit one I had!


 
Posted : 14/03/2018 4:04 pm
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Use a hope BB for the GXP, works really well too


 
Posted : 14/03/2018 4:12 pm
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For reference, these are some weights I recorded myself when swapping chainsets

GXP XX1 crank with 32T direct mount works component chainring - 567g

GXP X1 crank with 32T direct mount works component chainring - 647g


 
Posted : 14/03/2018 4:12 pm
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Raceface AEffect direct mount is 650g with 32T chainring. I've these on my FS and the fat version for the Puffin. £130


 
Posted : 14/03/2018 4:36 pm

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