Converting 3x to a 2x Setup

Forums Mountain Bike Forum Converting 3x to a 2x Setup

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    • #314771

      Hi Guys,

      I’ve just Registered after getting my first mtb, well a hand me down really a 2012 Cube Acid in tip top condition.

      It currently runs on the standard 30 Speed gears, with the following Shimano setup:

      Shimano Deore FD-M590 Top Swing 34,9mm, 10-speed
      Shimano Deore XT M786 Shadow+ Rear Derailleur 10-speed
      Shimano Deore SL-M591 Rapidfire-Plus, 10-speed

      I have found I don’t like having so many gears and want to drop the gears down to a 2x setup, eventually I may go with a 1x setup.

      My question is, how easy will it be and parts if any will I require?

      Thanks in advance.

    • #314790

      I would just go straight to a 1×12 if you can. I just made the switch over from a 2×9 to a SRAM GX Eagle 1×12 money well spent.

    • #314793

      You’re looking at a new front derailleur, shifter, and new chainrings, if not a new crank set. Like GJmtb said, you’re probably better off jumping right to 1×12. There are some really affordable options out there right now…

    • #314797

      Going to a 1×12 will also save you some weight. Always a good thing to me.

    • #314802

      Cheers for the advice / info.  I did look into a 1 x 12 setup, but:

      1. I’m just starting out and my riding skills leave a lot to the imagination.

      2. More importantly, its the funds that stop in in my tracks from venturing down a 1 x 12 route.

      I think point 2 was the main factor in deciding to go for a 2 x 10 route for the foreseeable future, until such time as $$$ become available.

    • #314868

      To your points, 1×12 doesn’t take any more skill than 2×10. In fact, it takes less skill because the shifting is much easier to work out.

      A 12-speed SRAM NX drivetrain costs about $250 which isn’t cheap, but it’s close to what you might end up spending going 2×10.

      I would estimate the parts you need for 2×10 would cost:

      • $50 for shifter
      • $100 for crankset, or two new chainrings if your crank can be converted
      • $50 for a front derailleur

      If your chain is worn you’ll need to replace that, and possibly the rear cassette as well if the chain has gone too long without replacement. If that happens, you could end up spending more than the 12-speed. ūüôĀ

    • #314948

      Cheers Jeff I will have a look at some of gear you have mentioned and total up how much it will be in terms of converting to a 1×12 setup.¬† I may wait until I find the items in Sales and purchase them at separate times and then have them fitted.

      Thanks once again Jeff

    • #509055

      I’m not sure where all of this poor or wrong information is coming from. Converting to 2x is fine, I converted my 3×9 to 2×9 and then to 1×9 without parts. Let me reiterate. You don’t need any parts.

      You simply remove the largest chainring and adjust your front derailleur limit screw to lock it out. 2×10 done.

      Regarding saving weight by switching to 1×12. No, that’s also not necessarily true from the other posters. Those dinner plate size cassettes often weigh more than an additional shifter and front chainring. You can¬†potentially¬†save weight.

      Cheers

      -D

    • #509057

      not sure where all of this poor or wrong information is coming from. Converting to 2x is fine, I converted my 3×9 to 2×9 and then to 1×9 without parts. Let me reiterate. You don’t need any parts.

      You simply remove the largest chainring and adjust your front derailleur limit screw to lock it out. 2×10 done.¬†

      Regarding saving weight by switching to 1×12. No, that’s also not necessarily true from the other posters. Those dinner plate size cassettes often weigh more than an additional shifter and front chainring. You can¬†potentially¬†save weight.¬†

      Cheers

      -D

    • #580954

      I am considering the same conversion. Wasnt sure why you would need a new detailer and shifter.. however would you not need a spacer or some sort of kit to remove the 3rd larger sprocket on the front? Or can you just remove it?

    • #580992

      I’m in the camp of removing the 3rd ring and setting the high lock to the middle.¬† I have two bikes in which I’ve done that without issue.¬† As for the rear, a tall 10 speed cassette and either a b screw or the derailleur link to fit the taller gears is all that I need on any bike.¬† The cost is vastly cheaper than a 1×12 setup and it works well.

      I’ve done the conversion on every bike I’ve owned and I’ve never purchased a 2x or 1x crankset.¬† I just use what I have.¬† Total cost for a 2x conversion with a tall cassette comes in well under 100 bucks for me.

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