90's Specialized Crossroads-3x7 to 11 speed?
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What are the gear-inch numbers for the highest and lowest gears, for current setup, and the new 1X setup?
https://sheldonbrown.com/gear-calc.html
https://sheldonbrown.com/gear-calc.html
current 99.7-25.2
1x7 83.1-25.7
Last edited by pontius; 03-07-24 at 04:45 AM.
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Be sure to save the old parts, just in case.
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If you don’t need the high end gears, and you can live with the likely clonkier changes, that seems an ok trade-off for ditching complex 3x chainrings.
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#31
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I could see going to 10 or 11 speed, or getting a wider range, but to do this work and end up with a narrower range and lose all the in-between gears doesn't make sense just to have a 1x7 setup. Not to me anyway. Is 3x7 that complicated? My bike I upgraded above is 3x10 and it isn't difficult. The smallest ring has never been necessary for my use so it doesn't get used. Simple. The middle ring only when I'm out of shape or for a really steep hill, and there aren't any in NYC, but maybe if I do the tour I keep wanting to do. I stay in the big ring 90% of the time. I forget what my rings are, but a typical 1990s triple setup with an 11-34 rear. I've got gears galore and never wish I needed more.
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I have a feeling the OP knows his riding and what he needs as far as top end.
if he is going to end up with 83GI that is a pretty easy 20+ mph; depending on cadence. On a hybrid that’s a good pace.
If nothing else, he’ll use that 1st position cog a lot more than most people who treat it a a downhill gear.
John
if he is going to end up with 83GI that is a pretty easy 20+ mph; depending on cadence. On a hybrid that’s a good pace.
If nothing else, he’ll use that 1st position cog a lot more than most people who treat it a a downhill gear.
John
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I don't see any benefit to going 1x with the link and new cassette
1) reduced range of gearing and certainly no increase in bottom end
2) 3x works fine I don't get the "complex" argument
save the money for N+1
1) reduced range of gearing and certainly no increase in bottom end
2) 3x works fine I don't get the "complex" argument
save the money for N+1
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)
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Well maybe if you’re an expert and keep it in tiptop shifting condition but I have never been able to, always some beef with them as soon as I neglect it for a couple of weeks and no FD or cable is a lot less hassle than some.
#38
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I'm far from an expert, but don't have trouble with triples. Once set, there shouldn't be anything to go sour unless you can't handle cables & housing either.
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#39
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One more thing: Will you be changing the crank too, or just using one position on your triple? If staying with current triple and using the middle ring, fine. But using just the inner or outer ring, your chainline (how straight the chain is going to any of the rear cogs) will be off more often, and that will wear the chain a bit more. Probably most critical if using the outer ring, because then the chainline will be off most when on the low cog, where you are pushing the hardest going up hills, higher force puts more wear on chains, especially if the chainline is off. One of the advantages of a multi-crank with duplicate gears is that you can choose the chainring for best chainline. If you are swapping out the crank for a 1X, then you should make sure you have a good chainline, aiming for the middle of the cassette (with your 7 speed, if 130mm OLD, probably 43.5mm chainline, and if 135mm OLD, might be a bit larger), but that's also an additional cost for your conversion.
I hope the above helps!
Last edited by Duragrouch; 03-07-24 at 03:39 PM.
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