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  1. #1
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    Using a non-ramped/pinned middle ring...

    Yes, I know it's been answered a 1000 times, but I'm considering swapping out to a different middle ring and using a bash guard instead of my outer ring. Problem is, the specific specialty middle ring I'm interested in is non ramped, but I would be able to use it for other purposes as well if see fit (1 x __ drivetrain or maybe even singlespeed). I'm using a SRAM twist grip shifter, so will shifting be okay up and back from the granny to a non-ramped and pinned middle ring? I've used a DH 40T as an outer ring before on a triple, but that was back in 2003 and I can't remember how it shifted. Memory loss sucks!

    Thanks in advance.

    BB

  2. #2
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    Expect slower up shifts, otherwise with the grip shifts and their micro-indexing it should work ok

  3. #3
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    Quote Originally Posted by mtnbiker72
    Expect slower up shifts, otherwise with the grip shifts and their micro-indexing it should work ok
    That's sort of what I figured and remember way, way deep in the recesses of my 8 year memory when I ran a 40T DH Race Face ring as my outer ring.

    Am I crazy? Here's what I would be going from in terms of my current gearing on a 29"er...

    Triple Gearing

    Changing to this with the two rings, plus I would gain the ability to run a smaller bash ring and improve some clearance underneath. It looks like I would only be losing the 40T/11T combo gain ratio which I could live without except for full out sprints...

    2 x 9 with Bash

    The other question would be the actual size of a bash ring since I've never used one before. If the ring is a 34T, do I get a 34T bash - or is a 36T bash required to protect the chain and teeth? It won't be a retention device as I'll still be using a FD.

    Thanks.

    BB

  4. #4
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    I've ran 22/34 on my 29er for the past few years and find it perfect for just about everything. Also, a 34t bash will protect the chain and teeth of a 34t chainring.

  5. #5
    ouch....
    Reputation: Shark's Avatar
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    I have a non ramped 30T ring (usually run 1x9), it shifts fine when I have the granny on, no issues.
    Riding.....

  6. #6
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    Quote Originally Posted by Shark
    I have a non ramped 30T ring (usually run 1x9), it shifts fine when I have the granny on, no issues.
    Thanks guys, I'm going to give it a whirl. And if doesn't work as well as I want, I can always use the ring for a 1 x __ drivetrain or SS. And if it works fine - I'll be happy.

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  7. #7
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    Quote Originally Posted by BruceBrown
    Thanks guys, I'm going to give it a whirl. And if doesn't work as well as I want, I can always use the ring for a 1 x __ drivetrain or SS. And if it works fine - I'll be happy.

    BB
    Report back and let us know.

  8. #8
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    Quote Originally Posted by Pisgah
    Report back and let us know.
    Will do. Order is placed...

  9. #9
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    Bruce,
    Are you going with Rotor Q rings?
    I run a 36t non pinned Q and it works fine with XTR shifters and a Dura Ace front derailleur.

  10. #10
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    Quote Originally Posted by the mayor
    Bruce,
    Are you going with Rotor Q rings?
    I run a 36t non pinned Q and it works fine with XTR shifters and a Dura Ace front derailleur.
    Yes, I'm going with the Rotors and a light weight 36T bash. Glad to hear your Q's are working fine. Mine should be here this week and I'll have at it with installation over the weekend.

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  11. #11
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    I think I may try a 34 on my XT crank on my 2nd bike.
    I started out with a 38 round ring and went down to a 36....could probably go for a 34.
    Turning a 34/11 is moving pretty fast.

  12. #12
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    Quote Originally Posted by the mayor
    I think I may try a 34 on my XT crank on my 2nd bike.
    I started out with a 38 round ring and went down to a 36....could probably go for a 34.
    Turning a 34/11 is moving pretty fast.
    Which 36T Rotor Q are you using? Is it the 110mm BCD pattern (road inner ring)?

    I was curious about that option on another crankset (110/74) to go with a 27/36 combo, but am pretty satisfied with the 27/40T I am running presently with that set. It's just that there are clearance issues on Niner frames with that large of a chainring for a 2 x __ setup that I've had to work around.

  13. #13
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    Quote Originally Posted by BruceBrown
    Which 36T Rotor Q are you using? Is it the 110mm BCD pattern (road inner ring)?

    I was curious about that option on another crankset (110/74) to go with a 27/36 combo, but am pretty satisfied with the 27/40T I am running presently with that set. It's just that there are clearance issues on Niner frames with that large of a chainring for a 2 x __ setup that I've had to work around.
    Yes...it's the road inner on a Agilis crank.
    I didn't want the 40t because it's over kill ( I'm not going to turn 40/11 around here) and I'd lose ground clearance going over logs and rock...which we have a lot of here

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