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Discussion Starter · #1 ·
I'm about to purchase a 575 to build up. It's my first build-from-scratch bike and I've been spending a ton of time looking for components. I'm trying to keep it pretty budget but still a solid build. After thinking about it a bit, I'm really thinking about going with a 1x9 setup due to the way I generally ride now (I ride a SS and a dual ring that I've had in the granny maybe once ever). So, my questions are as follows:

Is there any special consideration I should take when building the drivetrain?
Should this setup cause any problems I should know about (chainline, chain dropping, excess bob, etc...)?
How can I prevent these problems?
Lastly, Is this a terrible idea for a 575, going dual ring isn't out of the question, I just don't feel I NEED a granny?

A little info on what I'm thinking so far for the drivetrain: x.9 Rear derailleur, x.9 shifter, RF Evolve XC SS Crankset, Chainguide if necessary.

Thanks for any help!
 

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I rot before I ripen
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I think it's a cool idea. Shifting will be better, chain won't drop (Gamut chain guide, right?), and the bike'll be 1-2 pounds lighter. Let us know how it goes!

What size chain ring you planning to roll?

damon
 

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Bad Case of the Mondays
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I don't think its too much of a stretch. I run a 2x9 setup, because on the long climbs out here I need the 22, and I rarely miss the big ring.

The one thing I would recommend would be to get a non-ramped middle ring for your crankset. Chainline issues will depend on what crankset you are planning to use, but should be easy to fix. Line up the ring up front with the 5 cog in the cassette and I'd think you'd be fine.
 

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Discussion Starter · #4 ·
Right now, I'm looking mainly at the RF Evolve XC SS Crankset (which is unramped) with a chainguide. I'm thinking about going with either a 34 or 36 ring. Not quite sure yet but leaning towards 34.
 

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Jdub said:
I don't think its too much of a stretch. I run a 2x9 setup, because on the long climbs out here I need the 22, and I rarely miss the big ring.

The one thing I would recommend would be to get a non-ramped middle ring for your crankset. Chainline issues will depend on what crankset you are planning to use, but should be easy to fix. Line up the ring up front with the 5 cog in the cassette and I'd think you'd be fine.
Too bad I can't use my granny gear to put my bash guard on... that is the one I never use... I tried the bash guard in place of the large gear but I can actually find places to use that on the flats.
 

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iviguy said:
I tried the bash guard in place of the large gear but I can actually find places to use that on the flats.
Yeah I could use mine from time to time if I had it, but spinning out a 34-11 gets me plenty of speed. The problem we have out here is that even if you run a big ring, you're gonna destroy it on the rocks pretty quickly.

I could run a triple plus bash, but then you are giving up quite a bit of clearance. My big ring never even saw the light of day, pulled it during the initial build up. XTR rings are ridiculously expensive, didn't feel like having a $110 bash ring.
 

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EDR
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standing up and mashing the pedals with great efficiency doesn't seem to be a real strong suite of this bike (imo). Of course that can be tuned to your liking with shock pressure adjustments but at the cost of some plushness.

Something to consider if you have a lot of steep climbs in your future that would otherwise have you in a granny gear.

I realize you would still have 9 in back but....still no granny. I guess it really is dependant on your riding terrain/style as to how well this works...
 

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eatdrinkride said:
standing up and mashing the pedals with great efficiency doesn't seem to be a real strong suite of this bike (imo). Of course that can be tuned to your liking with shock pressure adjustments but at the cost of some plushness.
Very good point. I agree, the 575 is not a stand and mash type of bike. Its a sit, spin and soak it up type of bike.
 

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Discussion Starter · #9 ·
Well, short and (relatively) steep is probably most of what I'll see, but not all. The thing is I ride now with a 2x9 that I never get into the granny so I don't see it being a huge deal. Good info though, I will definitely keep it in mind, at worst I'll have to change cranks if it doesn't work out.
 

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Anyone considered a 3 x 1?

I've just thrown a surly 16 tooth on the back of my ARC with a Rennen spacer and I'm keeping the Middleburn with 22/32/44 up front. Will play with it for a few days and see how it feels.
 

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Actually, if you're running a sprung tensioner, don't use one of the Surly SS sprockets. the chain skips on them. Obviously designed for non-sprung fully tensioned chains. Use an old cassette sprocket which is designed to work with a derailleur.
 

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EDR
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le0p said:
Well, short and (relatively) steep is probably most of what I'll see, but not all. The thing is I ride now with a 2x9 that I never get into the granny so I don't see it being a huge deal. Good info though, I will definitely keep it in mind, at worst I'll have to change cranks if it doesn't work out.
My point is the 575 does exhibit some pedal bob when mashing due to its single pivot design. This is mostly (if not completely) erased by the propedal shock. But still, tuning is premium....making it 'bobless' is not really a matter of you being able to make work of a 1x9 but also the effect of the rear suspension design.....
 

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Discussion Starter · #13 ·
eatdrinkride said:
My point is the 575 does exhibit some pedal bob when mashing due to its single pivot design. This is mostly (if not completely) erased by the propedal shock. But still, tuning is premium....making it 'bobless' is not really a matter of you being able to make work of a 1x9 but also the effect of the rear suspension design.....
I knew what you meant :) My point was that I probably wouldn't use the granny, even if it meant avoiding some pedal bob, so I don't see it being a big enough problem to make me avoid a 1x9 setup.
 

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EDR
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le0p said:
I knew what you meant :) My point was that I probably wouldn't use the granny, even if it meant avoiding some pedal bob, so I don't see it being a big enough problem to make me avoid a 1x9 setup.
Then go for it. You are obviously a stronger rider than I am.....:thumbsup: I use my granny gear to climb often, I am a 'sit and spin' guy...mostly.
 

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Discussion Starter · #15 ·
eatdrinkride said:
Then go for it. You are obviously a stronger rider than I am.....:thumbsup: I use my granny gear to climb often, I am a 'sit and spin' guy...mostly.
Hehe, I doubt it, I'm just a noob really but I know how I will ride whether it's best for me or not.. I feel more comfortable out of the saddle on climbs so I tend to do it more often than I probably should.
 
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