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Anyone using a 46/30T crank on a road bike?

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Anyone using a 46/30T crank on a road bike?

Old 06-11-19, 05:31 AM
  #376  
Barrettscv 
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Originally Posted by wgscott View Post
We can now add Shimano to the list: FC-RX600-11

https://gravel.shimano.com/en/components/crankset/

The higher-tier one in their new gravel line is 48/31T. (WTF?)

They say that these new cranks change the chainline by 2.5mm, and that requires their new derailleur(s). (also, WTF?)
The chainline on the RX-600-11 is optimized for modern disc brake bikes with 142mm thru-axles. It's possible that this crankset will have chainline related cross-chaining issues if installed on a rim brake bike. The big-big combination would be problematic.

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Old 06-23-19, 08:15 AM
  #377  
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Originally Posted by Barrettscv View Post


The chainline on the RX-600-11 is optimized for modern disc brake bikes with 142mm thru-axles. It's possible that this crankset will have chainline related cross-chaining issues if installed on a rim brake bike. The big-big combination would be problematic.
I have a White Industries crank with a wider chain-line along with a 135mm hub in the rear. Works fine, even on big-big (and my rear big is 36T on one wheelset, 34 on the other). My bet is it most likely will work.

Anyway, the point was that it is another option (and that this is now main-stream enough to be an option with Shimano, FSA, etc.), not that it will work with any setup.
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Old 06-23-19, 08:46 AM
  #378  
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Originally Posted by wgscott View Post
I have a White Industries crank with a wider chain-line along with a 135mm hub in the rear. Works fine, even on big-big (and my rear big is 36T on one wheelset, 34 on the other). My bet is it most likely will work.

Anyway, the point was that it is another option (and that this is now main-stream enough to be an option with Shimano, FSA, etc.), not that it will work with any setup.
The Shimano RX-600-11 Gravel crankset is an excellent solution for disc brake bikes with thru-axles. Rim brake bikes with 130mm dropouts, the most common specification, might have drivetrain issues. Shimano recommendations the matching derailleur. These are important details that purchasers need to consider.
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Old 06-26-19, 10:27 AM
  #379  
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Yep. Just put a Ritchey Logic compact (94mm bcd) on my Merckx Team SC. Works just right with a Campy 102mm BB, and weighs less than most modern cranks!

But it did take a while to get over the "that's not appropriate for a pro race bike" thing and give my self the gearing I need.
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Old 07-05-19, 05:09 AM
  #380  
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Maybe a simpler solution is to just substitute the big ring 50 tooth chainring for a 46 T. I did that on my Cannondale that originally came with A 50/34. I needed to lower the front derailleur a tad, but with the 46 big ring I find I spend 95% of the time in the big ring in hilly Virginia.
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Old 07-05-19, 05:35 AM
  #381  
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You can run a compact on a vintage bike as well with the right crank such as a TA cyclotourist or a Stronglight 99. I recently built up an early 70s Motobecane Grand Record with a TA crank. The original gearing was 52/40 with a 14-26 5 speed rear freewheel. That provided a low of 41.5 gear inches. I built the bike up with 46/36 rings and a 14-28 5 speed rear freewheel which gave me a knee friendlier 34.7 gear inch low. I should search around for a 32 inner and run this as a 46/32.


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