Changed read cassette and hoping my largest ring isn't too big
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01-21-24, 12:42 PM
#28
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Yeah, I am lucky to be able to commute on some single track to work, but it takes its toll on the poor bike with mud and debris. Debating on tearing the entire bike down and running new, but also thinking about upgrading from the Surly ECR to something better. Hoping to ride from the Pittsburgh area to Key West within two years and might want a better setup. The ECR is mighty slow and heavy, but tourers usually are pretty damn heavy.
01-21-24, 12:44 PM
#29
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01-21-24, 01:21 PM
#30
Thread derailleur
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For the record, I worked several years at bike shops and could eventually figure out what the general public meant.
So, call the rear cogs whatever you want. Doesn't matter to me.
01-28-24, 10:17 PM
#31
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We refer to the rear as cogs and the front as rings.
I actually always refer to it as a sprocket (or cogwheel), because that's what it actually is. The teeth are the cogs whether it's on a cassette sprocket, a chain wheel or a gear. That's not to say I don't understand when people call the sprocket a "cog". I also understand when people refer to a tire as 25mm vs the bizarre 25c that's seems to be current jargon. I also understand "irregardless" and "I could care less". But cogs and sprockets (or cogwheels) are different things, and who knows, some day I might have to actually distinguish between an issue with the sprocket and an issue with one or more cogs on the sprocket. I think knowing the difference would help, instead of "it sems like one of the cogs on the cog is is bent or chipped or something".
Last edited by Camilo; 01-28-24 at 10:41 PM.
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01-28-24, 11:32 PM
#32
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I'm not an expert on this, just generally experienced and an engineer.
I think the problem with the 46 is a hyperspaceglide issue; Look at the ramp angles on the cog in the rotational position where the derailleur would first start to put the chain onto the 46, and adjust the derailleur or axle position fore/aft accordingly to try to make the chain match the angle. But it might just be too big a jump; I don't know the next smaller cog than the 46, but somewhere online, it should be specified what the max jump up should be (down jump is easy). But I thought I have seen jumps that big on "mega-range" cassettes, well before big 1X systems.
My 11-30 cassette is a really cheap one with an awful fascimile attempt at hyperglide, terrible ramp profiles, just C shaped, difficult shift onto the big cog with the original "compact" derailleur, but fitting a conventional style derailleur solved that, flawless shifts now.
I think the problem with the 46 is a hyperspaceglide issue; Look at the ramp angles on the cog in the rotational position where the derailleur would first start to put the chain onto the 46, and adjust the derailleur or axle position fore/aft accordingly to try to make the chain match the angle. But it might just be too big a jump; I don't know the next smaller cog than the 46, but somewhere online, it should be specified what the max jump up should be (down jump is easy). But I thought I have seen jumps that big on "mega-range" cassettes, well before big 1X systems.
My 11-30 cassette is a really cheap one with an awful fascimile attempt at hyperglide, terrible ramp profiles, just C shaped, difficult shift onto the big cog with the original "compact" derailleur, but fitting a conventional style derailleur solved that, flawless shifts now.
Last edited by Duragrouch; 01-29-24 at 01:07 AM.
01-30-24, 03:01 PM
#33
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The pictured rear derailer is an RD-M591, with a 36T largest sprocket specification. It's a 9-speed derailer, so I presume you're friction shifting it across a 10-speed cassette (or else using some sort of cable pull ratio manipulator). You could probably keep it and use a Wolf Tooth RoadLink or similar to physically lower the derailer so that it clears something larger than a 36T. I'd use caution here as this may degrade shifting across the smaller sprockets, as the upper chain pulley won't be as close to the sprockets, but this matters less with friction anyway.
