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Discussion Starter · #1 ·
Ok, here is the deal.

Thinking of getting a Salsa Ala Carte frame - with alternator drop outs, so adjustments are easy - and i am thinking of trying dingle speed.

I will commute on it everyday, 13 miles on bits of road and canal toepaths, all flat. At the weekend, i take to my local woods where i need a different ratio. I normally commute on 44/14 and was thinking of 38/14 for the woods.

Not really sure of the ratios yet, but the idea is to have two cogs and two chainrings. Is this a good set up? Which brands do you recommend? Anything to watch out for?

Thanks! (Ah, and piccs of any dingle set up welcome.)
 

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Stokeless Asshat
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The question is to decide what off road gear is optimal then work back words from there. Seeing that you can run a double front and back and have adjustable drops your biggest restrictions will be chain length. Try to pick a tooth count total that is close to the same for both combo's.

My trail bike gearing. 52 total teeth means no chain length difference. It's not so good for commuting but it gets me to the trails.
36 x 16 x 29" =65.25. That's my get to the trail without spinning like a gerbil gear.
32 x 20 x 29" =46.4. That's my trail gear for the Front Range. Steep sustained climbs.

Your proposed gearing. 58 total teeth for the commuter gear.
38 x 14 x 26" =70.5". That's a huge gear for off road. For a comparison I run a 72" for commuting.
44 x 14 x 26" =81.7". As you know that's a big gear for commuting, unless you're a girl jean wearing Masher, but doable for flatter areas.
Look at running a 38x20. That puts you in the 49.5" range for the trail and keeps your chain length which allows you to change gears with minimal if any adjustments.

As far as components go I'm sure the masses will pipe in and give you their opinions but you'll need to establish what you already have, what you'll purchase and of course budget.

Jeff

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up n over
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Ive got a dragon 29er running a dual pulley sturmey archer tensioner.
I've got a front xtr deraileur with thumby, 2 speeds.
I'm pulling a 16t out back.
Up front a 29t at 49in for long climbs and muck
And a 34t at 56in for cruising and pulling away (spins nicely at 15mph and can top at 20mph for bursts)
32-15 is also 56in
32-16 is approximately 53
Have fun, I love my "double dragon".
 

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Discussion Starter · #5 ·
Jeff - There was a typo. I meant 38/18 for offroad and 42/14 for commute (and keep same tooth). It has to be stressed, that my commute is flat as a pancake and the woods are not that steep either. For more challenging places i have my geared bikes.

The idea here was really to build a warrior. I used to have a 42/14 for the commute journey and it was spot on. To be fair, i used to take it to the forest on that ratio and despite the hard work never got massively stuck (in dry weather). But of course, i want some more flexibility.

Any advice on components for dingle set up is still welcome. Say cogs and chainrings max $200.

elsewhere - any piccies?
 

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up n over
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Ya but I'm on a "smart" phone and I'm not "smart" enough to
figure out how to do it...
U can search my SN for older threads..
 

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Content from my avatar
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andrewmoke said:
Ok, here is the deal.

Thinking of getting a Salsa Ala Carte frame - with alternator drop outs, so adjustments are easy - and i am thinking of trying dingle speed.

I will commute on it everyday, 13 miles on bits of road and canal toepaths, all flat. At the weekend, i take to my local woods where i need a different ratio. I normally commute on 44/14 and was thinking of 38/14 for the woods.

Not really sure of the ratios yet, but the idea is to have two cogs and two chainrings. Is this a good set up? Which brands do you recommend? Anything to watch out for?

Thanks! (Ah, and piccs of any dingle set up welcome.)
Man up, dumb down, and do one gear! :D
 

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Discussion Starter · #9 ·
elsewhere - yes please. andrecorreiasantos at hotmail dot com thanks

erik1245 - wise words! Still, i think i am going ahead with my not manly set up!
 

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Ovaries on the Outside
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I've never really had a great dingle set up, but it sounds like you have a better set up for running one. Your ratios sound fine- I'll pimp ISAR and homebrewed components for cogs/chainring. The high quality will likely help you to get good chain tension on both ratios. I used cheaper stuff on my dingle set up and when I switched the gears I had to move the axle in the dropouts and it would mean brake rub, though with disc brakes life might be happier.

Looked through the album and couldn't find a drivetrain shot of my set ups. Sorry!
 

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quite a bit of good discussion here already re gear ratios & inches...

but what about the actual set-up?
andrewmoke do you already have parts that you need to use or starting from scratch?
just a couple suggestions among the many options:
you could use white industry's double chainring &/or dos eno double freewheel...ride a "commuter" ratio on the road then swap it by hand to an off-road set-up at the trailhead (easy to do with sliders).
i think there are others that make similar items but can't remember exactly who.
or with the right rear hub you might even be able to run a surly dingle cog there.

good luck whatever you choose...
 

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up n over
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Pics sent 2:30pm central time.
I bumped my thread in the 29 forum, its called 2 speed.
 
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