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Lightweight crankset for Emonda

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Lightweight crankset for Emonda

Old 10-18-18, 08:48 AM
  #1  
Pax_Eco
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Lightweight crankset for Emonda

I'm looking for some lightweight crankset for my 2017 Emonda SL 6, BB90.
Corrently running Ultegra.
Don't need power meter
Any sugestion?

Last edited by Pax_Eco; 10-18-18 at 08:53 AM. Reason: new info
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Old 10-18-18, 10:10 AM
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fietsbob 
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Carbon. (almost) everyone wants more carbon fiber.

...
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Old 10-18-18, 03:01 PM
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Ultegra cranks are already pretty lightweight. How many hundreds of dollars are you prepared to spend to save less than 200 grams? And, also possibly have poorer front shifting?
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Old 10-18-18, 03:28 PM
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A full water bottle = 700 gm roughly.
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Old 10-18-18, 03:57 PM
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Crank options for BB90 are a little limited-its really designed for a 24mm spindle, as with a 30mm spindle there's not room for sanely sized bearings. You could do something like a GXP Red crank.
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Old 10-18-18, 04:53 PM
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To go faster:
  1. Step away from the keyboard
  2. Use the time you were researching how to save grams to ride more instead.
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Old 10-18-18, 07:32 PM
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dura ace
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Old 10-18-18, 08:57 PM
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Is this the last place you can lose weight off the bike?

Because cranks are the last place you should try to lose weight off the bike.
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Old 10-18-18, 09:55 PM
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Praxis Zayante Carbon is 635 grams (52/36).

https://fairwheelbikes.com/praxis-za...rbon-crankset/



If you have budget then the THM Clavicula SE is as light as it gets.

https://us.thm.bike/en/7-cranksets




-Tim-

Last edited by TimothyH; 10-18-18 at 09:58 PM.
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Old 10-19-18, 12:29 AM
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Originally Posted by TimothyH View Post
Praxis Zayante Carbon is 635 grams (52/36).

https://fairwheelbikes.com/praxis-za...rbon-crankset/


If you have budget then the THM Clavicula SE is as light as it gets.

https://us.thm.bike/en/7-cranksets



-Tim-
Neither of those will fit in a bb90 Trek because it is designed around a 24mm spindle. You'd need to use insanely small bearings to fit a 30mm spindle. People have tried but it's a really bad idea
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Old 10-19-18, 10:46 PM
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Originally Posted by cpach View Post
Crank options for BB90 are a little limited-its really designed for a 24mm spindle, as with a 30mm spindle there's not room for sanely sized bearings. You could do something like a GXP Red crank.
I have been happy with my SRAM Red 22.Works fine with my ultegra 6800 FD and shifters. About 600grams I think. Mine is BB30 but as cpach noted, they make a gxp 24mm spindle version. You need gxp bb bearing kit for the bb90 trek, which arent very expensive. I would be curious to try bbinfinite for the GXP set up, but they are a little pricier. https://www.bbinfinite.com/products/...=1132845170702
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Old 10-19-18, 11:41 PM
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Originally Posted by cpach View Post
Neither of those will fit in a bb90 Trek because it is designed around a 24mm spindle. You'd need to use insanely small bearings to fit a 30mm spindle. People have tried but it's a really bad idea
I missed that it was BB90. Thanks.


-Tim-
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Old 10-21-18, 05:44 AM
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Originally Posted by Kimmo View Post
Is this the last place you can lose weight off the bike?

Because cranks are the last place you should try to lose weight off the bike.
Why are cranks the last place? Other than the frame, fork, and wheels its the heaviest component.

You could just go Dura-Ace.
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Old 10-21-18, 11:43 AM
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Originally Posted by gsa103 View Post
Why are cranks the last place? Other than the frame, fork, and wheels its the heaviest component.

You could just go Dura-Ace.
While cranks may be one of the heavier components on a bike, they are also the most expensive, particularly the lightest most exotic choices. The OP already has high quality Ultegra cranks. Switching to Dura Ace cranks might save in the neighbourhood of 70 grams at a cost in the $400 - $500 range. Figure out the cost per gram. More exotic cranks might save a couple of hundred more grams, but at perhaps twice that price

Last edited by alcjphil; 10-21-18 at 11:58 AM.
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Old 10-21-18, 01:26 PM
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The same 70 grams can be saved by switching to lighter bottles like the Elite Fly ... or lighter tubes ... I highly doubt its anything to obsess about.
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Old 10-21-18, 03:16 PM
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I have lightweight Tune bottle cages and light wheelset.
So thinking in upgrade in other components like crankset...
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Old 10-21-18, 07:45 PM
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Originally Posted by Pax_Eco View Post
I have lightweight Tune bottle cages and light wheelset.
So thinking in upgrade in other components like crankset...
What tires and inner tubes are you using on your light wheelset? Upgrading your crankset will cost over $500
Which other components have you already upgraded? You already have high quality lightweight cranks. You could save more weight at less cost with a lightweight saddle
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Old 10-22-18, 10:39 AM
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use ax-lightness Ultra 25T wheels,,
790 grams for set..
$2750...
piggo will need to be smeashed?...


my racer bike is 27lbs without bottle...
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Old 10-22-18, 03:38 PM
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Originally Posted by gsa103 View Post
Why are cranks the last place?
I wasn't even thinking of the cost; that's a secondary consideration.

After tyres, tubes and rims, work your way down the bike from the top. Losing 70g from the seat or bars is going to make a noticeable difference, while you won't notice it off the cranks. Saving weight on the cranks is just contributing incrementally to lightness overall. Probably the only worse bang for buck weight wise would be ceramic bearings.
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Old 10-23-18, 05:08 PM
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Originally Posted by alcjphil View Post
What tires and inner tubes are you using on your light wheelset? Upgrading your crankset will cost over $500
Which other components have you already upgraded? You already have high quality lightweight cranks. You could save more weight at less cost with a lightweight saddle
Bontrager Aeolus XXX 4 wheels, Conti Grand Prix 4000, Continental tubes Light version...
I've updated saddle, seatpost...
Next will be stem and bars
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Old 10-24-18, 04:52 AM
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Originally Posted by TimothyH View Post
If you have budget then the THM Clavicula SE is as light as it gets.

https://us.thm.bike/en/7-cranksets



-Tim-
Wow, those are seriously light!
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