2x9 gearing

[struggles]

Is anyone running two chainrings on the front. I have heard the normal gearing for this is 44 29 with a 12-32 cassette. I was thinking about running some ultegra road cranks with 53-39 and 12-23 cassette. I know it will be harder to ride uphill but it should fly on the flat.

[LordNikon]

With a bigger cog on the front you will lose a lot of ground clearance.

I use a 48 big ring and it's a really noticeable difference.

[Rik]

Is this for offroad, or road use?
You're going to have a whole shitload of farking about spacing the cranks out to suit. Are they square or spline? If they're square, you can run a 125 or 127mm wide BB (even then you'll have frame clearance problems), if they're spline, well I don't think you can get bottom brackets that wide.
Personally, if I were to run a 39-53, I'd have a wider block on the back. Ground clearance might be a big issue offroad too.
I am thinking you're a tad overambitious with your ratios, but then again, if you're an insanely powerful rider, then you may be able to push it, but even then, it'll still be a pretty big effort.

Right now, I have a 32/44 dual ring, and am about to put a 11-34 on the rear. I am yet to get serious offroad on this bike though, so can't really judge if I need to change my setup much, but for flying around the streets, I'm loving it.

[struggles]

Its mainly for the road as I have my stinky for offroad. It looks as though it might be a bit of stuffing around to put the big cranks on. At the moment I am running a 22 32 42 with a 12-23 on the back and find that I can easily out pedal that gearing with a tailwind.

[DEVLIN]

Just get a 44 or search around for a 46 chainring. Alot less hassle and cost. Use the down wind legs as spin training and get your pedal stroke nice and smooth.

[Rik]

That's right, especially when riding a Stinky, having good, smooth pedalling would definately pay off.

[Toxic]

38-24 with an 11-34 cassette. Works great but the top speed is no good so I'm going back to a triple setup using the biggest chainring that will fit behind my Blackspire Bash guard, probably a 46T.

[Fat Rick]

I'm riding a 28/38/48 with 28/12 on my XC/commuter and I found a huge difference from the traditional 22/32/44 setup. You do need to have more power than you'd think to push and as someone has stated above, the 59 big ring might ba a little much.

[Squidly Didly]

I refer you---------------->THIS WAY!!! (http://www.farkin.net/forums/viewtopic.php?t=6402&highlight=2x9)

[alexMc]

I use 2x9 its great

[leftang]

I'm currently riunning 32-44 / 11-32, and it's awesome for 99% of the riding. Cuts down on shifting at the front. Now, occationally i'm finding myself pushing quite hard on 32/32 up the very steepest, and wouldn't mind a 29 or a 30. ANyone know who makes them?

Lars

[Cruz]

Coda Cannondale and FSA did, but either have to buy specific cranks or grind some of your spider off,

[Squidly Didly]

2x9 chain rings are narrower Cruz, and the spider is wider. I ran the coda on my Scalpel, and the FSA is currently on my FXR. I had to put a shim in each chainring bolt to get around the problem but it's all sorted.
Who would've thought washer jamming could be so efficient :wink:

[pecker]

Vale ..... ???

Pecker

[Squidly Didly]

Vale ..... ???

Pecker
sigh :roll:

[Emmett]

i believe back around 1997'ish Ritchey were working on a 2x9 system..

[Cruz]

2x9 chain rings are narrower Cruz, and the spider is wider. I ran the coda on my Scalpel, and the FSA is currently on my FXR. I had to put a shim in each chainring bolt to get around the problem but it's all sorted.
Who would've thought washer jamming could be so efficient :wink:

Thats what I ended up doing too, but I didn't think it was technically very right and wasn't going to recommend it to anyone.

[leftang]

Salsa cycles at www.salsacycles.com make a 30 tooth middle ring in 94 mm 5 arm spider.