Going from a triple to a double – what don’t I know?

[dbb]

@jrenaut 158456 wrote:

Ha, I know, it’s filthy. Freezing Saddles! No time for bike cleaning.

You’re not riding it now…….

[jrenaut]

@dbb 158457 wrote:

You’re not riding it now…….

I’m busy now

[hozn]

@jrenaut 158454 wrote:

I have a 44t narrow wide coming to the Bike Rack tomorrow. For now I might just put the old big ring back on, but going forward I think I need a chainguard. Anything I should know about chainguards?

Are you getting a clutch RD? If so, you shouldn’t need a chain guard. If not, then you might want something if you expect to.ride over rough terrain (or potholed streets). When I ran 1x on the MTB pre-narrow-wide, I used a Drop Stop chain cather for inside and a bash guard in 2t larger size for the outside (e.g. a size-34 bashguard with my 32t ring). I may have had some rub of chain on bashguard in the small cogs/high gears. I would probably run without a bash guard/chain guard and see how it stays on even without a clutch RD.

[jrenaut]

It’s not that I’m worried about dropping the chain, it’s that I want to use the single narrow-wide without changing out the triple.

[hozn]

@jrenaut 158470 wrote:

It’s not that I’m worried about dropping the chain, it’s that I want to use the single narrow-wide without changing out the triple.

Yeah, that won’t be a problem. You just need shorter chain ring bolts. Or the SRAM 1x rings come with washers/spacers that allow you to use your 2x bolts with a single ring. I have always used a double crankset (which is same as a triple crankset as far as how the middle and outer rings attach) with 1x rings. (For my setup a double crankset makes more sense because the chain line is more correct for 135mm rear spacing, but for you a 1x would be correct chain line for the 130mm rear. Probably mount the narrow-wide ring on the inside of your crankset — where your middle ring used to be — if it will clear the chain stay.)

[jrenaut]

So 1X10 seems to agree with me – inaugural ride and I PRed Hains Point and the Two Sisters, along with some other segments I’ve ridden a lot.

[drevil]

@jrenaut 158923 wrote:

So 1X10 seems to agree with me – inaugural ride and I PRed Hains Point and the Two Sisters, along with some other segments I’ve ridden a lot.

Less weight and complexity…so by this logic, you can upgrade your Cat if you go 1×1 fixie, amirite?

[jrenaut]

If you find me a gear ratio that works well for Hains Point AND the Two Sisters, I’m all ears.

The bike is lighter than usual – I took off the rack and fenders and haven’t put them back on again yet.

[Judd]

@drevil 158926 wrote:

Less weight and complexity…so by this logic, you can upgrade your Cat if you go 1×1 fixie, amirite?

Drop the drivetrain completely and turn it into a strider bike. Fast fast.

[jrenaut]

Forgot I have more pictures to share.

Here is an example of a bottom bracket that needs replacement.

IMG_20170415_161836973 by Jon, on Flickr

When TwoWheels and I took it off, the bearings and lots of shards of metal flew everywhere. It was awesome.

[jrenaut]

And here’s the finished product, though without the rack and fenders.

IMG_20170423_155501456 by Jon, on Flickr

[TwoWheelsDC]

@jrenaut 158930 wrote:

And here’s the finished product, though without the rack and fenders.

IMG_20170423_155501456 by Jon, on Flickr

What was the solution to your chain drop issue?

[jrenaut]

@TwoWheelsDC 158932 wrote:

What was the solution to your chain drop issue?

Didn’t have the quick link closed fully so I could still take it off in case the length wasn’t right. In hindsight, it should have been totally obvious that this would make the chain pop off. At least now I know for next time.

[vvill]

@jrenaut 158927 wrote:

If you find me a gear ratio that works well for Hains Point AND the Two Sisters, I’m all ears.

47-15 works ok

[jrenaut]

@vvill 158934 wrote:

47-15 works ok

“ok” is not “PRing both segments in one ride”

[Author]

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