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  Topic Name: Looking for some help with drivetrain options for a Cutthroat Apex 1 on: August 20, 2019, 05:26:22 PM
ghbucky01


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« on: August 20, 2019, 05:26:22 PM »

I am seriously lost in the technical jargon/marketing language in bike drivetrains. As the title mentions, I have a 1x11 Cutthroat with Apex 1 rear set.
(https://salsacycles.com/bikes/cutthroat/2019_cutthroat_apex_1_sus)

I am exploring options for getting to some lower gear ratios. If I look at SRAM site for the Rival 1(https://www.sram.com/en/sram/models/rd-riv-1-a2), it says the derailleur can handle up to a 42 tooth cog, which is what is on the bike now. However, I have seen what appears to be bigger cassettes on the same rear derailleur at https://bikepacking.com/bikes/tour-divide-rigs-2019 (John Girmsey's bike is an Apex 1 with a '9-46 eThirteen cassette').

Is there some modification that needs to be done for that to work, or is it simply backing out the b-screw? Is shift quality going to be compromised?

The other thing I've been looking at is aftermarket chain rings, but I get even more lost in the weeds there.
This is my crankset: https://www.sram.com/en/truvativ/models/fc-styl-6k-b1 SRAM says it can go as low at 30t ring. Is it that they only make a 30t ring for that crank, or that there is some other limitation on a smaller ring?

I'm looking at Wolftooth https://www.wolftoothcomponents.com/collections/mountain/products/direct-mount-chainrings-for-sram-cranks?variant=26132212997 Am I correct that I would need the BB30, which means I can use a 28t ring? Is that compatible with my crankset?

TIA

[edit] fixed broken link
« Last Edit: August 20, 2019, 08:09:17 PM by ghbucky01 » Logged

  Topic Name: Looking for some help with drivetrain options for a Cutthroat Apex 1 Reply #1 on: August 20, 2019, 06:53:50 PM
alpamayo


Location: Apex, NC
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« Reply #1 on: August 20, 2019, 06:53:50 PM »

The link doesn’t work for your crankset, but I have a North Shore Billet 28 tooth on my sram crankset with a 9-42 cassette. Sram only makes down to a 30 for mine as well, although we have different cranks. So there may be chainring options from NSB or Wolfstooth perhaps.

There may also be a Wolftooth option to extend the rear derailleur cage and allow a bigger cassette, but it may work without. I know my Sram force road derailleur should only be able to accommodate a 32t gear with my 34-50 double, but I have run a 36 t rear, but I’m not sure if going from 42 to 46 would work.

Id probably give Wolfstooth a call and ask them about your options.
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