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$500...What crank arm set?

Posted: Thu Feb 16, 2012 8:47 am
by 2ndgen
I'm thinking my CAAD is deserving of a different set of crank arms.
I'd love to get a Hollowgram set as that seems like the proper thing
to do, but it's a non-BB30 frame so I'm looking for another option.

I'd like to be able to keep the Dura-Ace 7800 BB & Praxis 53/39 Chainrings.

Of course, the main reason for possibly getting out of the Ultegra SL crank
would be for significant weight savings. I've calculated the entire set-up to come
in at 773g (rings, bolts, BB, crank). A Dura-Ace 7800 crank is out of the question.
Oh, and it HAS TO BE Black (carbon would be nice as well).

So, since I can't slap on a Hollowgram, what are my options if I decide to go all the way with my drivetrain?

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$500...What crank arm set?

Posted: Thu Feb 16, 2012 8:47 am
by Weenie

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 6:06 pm
by 2002SaecoReplica
7900 crankset
or
Rotor 3D+ with BSA30 adapter.

/thread

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 7:48 pm
by Kastrup
What about the Rotor 3D without the +?

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 8:53 pm
by Rippin
Lighter, carbon and $500 and under:

Red Black crankset, then strip the graphics?

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 9:22 pm
by Bling
KCNC K-Type looks great. I just got one and it comes in at 620g with the BB and rings.

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 9:35 pm
by Briscoelab
A 7900 crankset would look great on your bike. Keep the DA rings on there though.

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 9:41 pm
by Getter
I'd go with the 24mm spindle 3D. I highly doubt that you'll be able to tell the differences vs the 3D+.

Looks-wise, if you run Shimano cranks you have to run the Shimano rings...or else it just won't look right. The Praxis rings at first glance look just like the rings off a SRAM Red crank. If you run the Rotor...it won't look so obvious.

Re: $500...What crank arm set?

Posted: Thu Feb 16, 2012 10:08 pm
by justkeepedaling
Dura Ace 7900

Re: $500...What crank arm set?

Posted: Fri Feb 17, 2012 6:09 am
by Gearjunkie
Bling, good weight for your KCNC.

Is it standard or compact and what length?

Re: $500...What crank arm set?

Posted: Fri Feb 17, 2012 2:08 pm
by 2ndgen
Thanks for all the replies.
DA7900 won't garner me much of a benefit as it's barely a 48g loss.
I think there'll be compatibility issues as well right?
(will have to go with a 7900 chain? cassette?)

I'll keep reading & researching. Thanks. :thumbup:

Hopefully, one day, someone will actually make a non-BB30 adapter for a Hollowgram.

Re: $500...What crank arm set?

Posted: Fri Feb 17, 2012 6:14 pm
by aaric
2ndgen wrote:Thanks for all the replies.
DA7900 won't garner me much of a benefit as it's barely a 48g loss.
I think there'll be compatibility issues as well right?
(will have to go with a 7900 chain? cassette?)


No compatibility issues. No chain or cassette replacements needed (other than considerations if your existing cassette/chain have a lot of wear that you'd have with any new set of rings)

Also, you'll lose 48g, but gain a lot of stiffness. Conventional wisdom is that to gain much weight off of a DA7900 crank, you'll give up a ton more stiffness and shifting quality, which is why you are getting a ton of recommendations for the 7900.

Re: $500...What crank arm set?

Posted: Fri Feb 17, 2012 6:24 pm
by prendrefeu
2ndgen wrote:Hopefully, one day, someone will actually make a non-BB30 adapter for a Hollowgram.


It would require a custom spindle as well, as the lengths & location of bearings will be different. The diameter of the spindle isn't an issue however, just the length.

Re: $500...What crank arm set?

Posted: Fri Feb 17, 2012 6:26 pm
by shoopdawoop
Perhaps save up a little more and get a power meter? If not my vote goes to a Rotor.

Re: $500...What crank arm set?

Posted: Sat Feb 18, 2012 5:22 am
by 2002SaecoReplica
2ndgen wrote:Hopefully, one day, someone will actually make a non-BB30 adapter for a Hollowgram.


They already do, it's called Rotor 3d+ with BSA30 adapter.

Re: $500...What crank arm set?

Posted: Sat Feb 18, 2012 5:22 am
by Weenie

Re: $500...What crank arm set?

Posted: Sat Feb 18, 2012 3:45 pm
by davej35
DA 7900 is exactly good choice if you're looking for a combination of lightweight and durability.