Compact, half compact or harden up?
#26
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#27
This is the right answer. 53/39's used to be the standard for a long time, but if you are doing any considerable climbing there is a reason 50/34 is the new standard. Keep your existing cassette if it isn't worn out.
#28
Campag is right. 50x11 at 28.5 MPH at 80 RPM. (43 MPH at 120 RPM) To maintain that 28.5 MPH pace, in the drops, on flat land with no wind for a 155 lb rider and 20 lb bike, they'd have to output >400W. That's roughly 6 W/kg. That puts them in the Cat 1-2 - World Class on this chart. So unless you're constantly riding down massive straight grades, anything higher is unnecessary. Even then, your gearing is better spent where you'll be riding the majority of the time, not when you're flying down a hill.
Now that I remembered to go look at a gear calculator it makes perfect sense to me.
Last edited by aubiecat; 06-14-16 at 12:09 PM.
#29
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I've asked people who have ridden professionally on the best crank ratio the said the 52/36 was the perfect ratio for the street. It's what I run with an 11-28 cassette. I've got up every hill I've come upon, though slowly on some. 100-105 cadence is high, great you can keep it up, but slowing it down to the 90s may net better results. Everyone is different though, so do what's most comfortable for you.
#30
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A 60 cadence for climbing a 9% grade isn't bad. Overall being new to cycling your regular cadence of 100-105 is a bit high. Several studies exists on cadence and generally 85-95 is good for most people with normal riding. Your high cadence riding along with low climbing cadence makes me think you need more leg strength.
I wouldn't bother your current gearing for a while. Use hills as a way to build strength. Stand occassionally and pick up the speed/cadence. Also use a more difficult gear on the flats and work harder in spurts.
I wouldn't bother your current gearing for a while. Use hills as a way to build strength. Stand occassionally and pick up the speed/cadence. Also use a more difficult gear on the flats and work harder in spurts.
#31
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Campag is right. 50x11 at 28.5 MPH at 80 RPM. (43 MPH at 120 RPM) To maintain that 28.5 MPH pace, in the drops, on flat land with no wind for a 155 lb rider and 20 lb bike, they'd have to output >400W. That's roughly 6 W/kg. That puts them in the Cat 1-2 - World Class on this chart. So unless you're constantly riding down massive straight grades, anything higher is unnecessary. Even then, your gearing is better spent where you'll be riding the majority of the time, not when you're flying down a hill.


#32
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This chart is a good explanation for why bikes are geared wrong for most people. Guys at the top of this chart are putting out three times the power of the guys at the bottom. Most people are putting out power that looks like the bottom half of the table and running gears designed for the guys at the top. Explains why I like my 46/36/24 crank better than my 53/39.
#33
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I see triples making a well-deserved comeback once everyone realizes compact doubles and wide range cassettes are a huge tradeoff for a few extra grams and a few extra seconds of front derailleur tuning. Having a 42T middle ring for most terrain plus a big ring in the 50-53T range AND a 24-30T bailout ring for the steep stuff is still the ideal crankset in my opinion.
#34
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I went from a 12-25 to a 11-28 cassette (not going to bother with DA long cage). This alone makes a huge difference.
Sometime soon, I will change from a 53/39 to a 52/36 or 50/34, depending on what my crank and stuff supports.
-edit-I will never see myself cranking fast on a 53 with the small cogs. I will try my damnedest, but I doubt it.
Sometime soon, I will change from a 53/39 to a 52/36 or 50/34, depending on what my crank and stuff supports.
-edit-I will never see myself cranking fast on a 53 with the small cogs. I will try my damnedest, but I doubt it.
Last edited by beermode; 06-14-16 at 09:08 PM.
#35
This chart is a good explanation for why bikes are geared wrong for most people. Guys at the top of this chart are putting out three times the power of the guys at the bottom. Most people are putting out power that looks like the bottom half of the table and running gears designed for the guys at the top. Explains why I like my 46/36/24 crank better than my 53/39.
Thanks to Colorado for his excellent post. Great perspective.
#36
Exactly, I believe Merlin who is an active member here is a CAT3 and rides a compact. The rest of us don't need taller gearing. Some in fact need wider gearing if living in the mountains...a triple is a pretty good thing....granny to get up and larger ring to descend.
Thanks to Colorado for his excellent post. Great perspective.
Thanks to Colorado for his excellent post. Great perspective.
Standard road double 53-39 is fine for average riders, and people do complain about drawbacks of compact gearing. Mainly the extra shifting between rings they find themselves doing.
#37
Let's not say that no one needs a 53-39 or that it's too tall for anyone slower than a Cat3 racer. Personally I can get by with just a single 44 gear in front, but I like having a 53 better.
Standard road double 53-39 is fine for average riders, and people do complain about drawbacks of compact gearing. Mainly the extra shifting between rings they find themselves doing.
Standard road double 53-39 is fine for average riders, and people do complain about drawbacks of compact gearing. Mainly the extra shifting between rings they find themselves doing.
#38
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I see triples making a well-deserved comeback once everyone realizes compact doubles and wide range cassettes are a huge tradeoff for a few extra grams and a few extra seconds of front derailleur tuning. Having a 42T middle ring for most terrain plus a big ring in the 50-53T range AND a 24-30T bailout ring for the steep stuff is still the ideal crankset in my opinion.
This is another reason triples won't be making a big comeback. People don't take the time to figure out where their gears are and how to use their transmission effectively. They just go out and start riding, and it's a lot easier to just click up and down the cassette than to navigate through the chainrings.
#39
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#40
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While I agree that triples are great for most recreational riders, I don't see them making a comeback because they're not cool and they're a little bit harder to use. Most people are not making a realistic assessment of their abilities, looking at the terrain they will be riding, and plugging different gearing combinations into gear calculators to see what will work best for them. They walk into a shop and buy the coolest looking bike in their budget. When I encounter people out riding I'll occasionally ask about what gearing they are running and how they decided what to go with. 7 times out of 10 they have no idea. Even the few who know what gears they have usually say it's what came with the bike. I would say 1 out of ten specifically selected their chainrings and cassette for their abilities and intended use. That estimate may even be a little high because I talk to a lot of randonneurs who tend to be very knowledgeable about that sort of thing.
This is another reason triples won't be making a big comeback. People don't take the time to figure out where their gears are and how to use their transmission effectively. They just go out and start riding, and it's a lot easier to just click up and down the cassette than to navigate through the chainrings.
This is another reason triples won't be making a big comeback. People don't take the time to figure out where their gears are and how to use their transmission effectively. They just go out and start riding, and it's a lot easier to just click up and down the cassette than to navigate through the chainrings.
#41
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Interesting idea. I doubt the pros would use it because they already know how to shift and they don't need the granny gear anyway. If the pros don't use it, then the average MAMIL won't think it's cool.
#42
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Most pros aren't using compacts and pie-plate sized (32-36T big cogs) cassettes either. I think it has a chance, but the big 'if' is will Shimano decide to bring back high-end triples. Perhaps some pros would run one in the big mountains if it was DI2. I can imagine a 54/42/32 triple with an 11-23 cassette being quite the mountain tamer for a pro.
#43
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Most pros aren't using compacts and pie-plate sized (32-36T big cogs) cassettes either. I think it has a chance, but the big 'if' is will Shimano decide to bring back high-end triples. Perhaps some pros would run one in the big mountains if it was DI2. I can imagine a 54/42/32 triple with an 11-23 cassette being quite the mountain tamer for a pro.
#44
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Most pros aren't using compacts and pie-plate sized (32-36T big cogs) cassettes either. I think it has a chance, but the big 'if' is will Shimano decide to bring back high-end triples. Perhaps some pros would run one in the big mountains if it was DI2. I can imagine a 54/42/32 triple with an 11-23 cassette being quite the mountain tamer for a pro.
#45
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#46
This is another reason triples won't be making a big comeback. People don't take the time to figure out where their gears are and how to use their transmission effectively. They just go out and start riding, and it's a lot easier to just click up and down the cassette than to navigate through the chainrings.
I'd only want a compact for a better climbing gear ratio at the bottom end, or a triple if I really needed that. I have the impression from OP that he's climbing pretty well. 60 RPM up his 9% grade is already not shabby, and I expect him to get stronger since he's just recently started. It seems to me that talk about changing to a compact double is premature, and a triple is an overly drastic change, when just swapping a cassette may be all he ever really needs. And maybe not even that.
#47
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I've been considering swapping out my 50 ring for a 46 on my compact double.
#48
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I'd only want a compact for a better climbing gear ratio at the bottom end, or a triple if I really needed that. I have the impression from OP that he's climbing pretty well. 60 RPM up his 9% grade is already not shabby, and I expect him to get stronger since he's just recently started. It seems to me that talk about changing to a compact double is premature, and a triple is an overly drastic change, when just swapping a cassette may be all he ever really needs. And maybe not even that.
#49
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From: Amateur Coachsurfer
Where do you find climbs that average 9%?
I love climbs as well (currently riding a mid-compact with 11-28), but I have never seen an extended climb at averages that steep. Even the steep streets of SF, which are anomalies, are about 10%, but are short (less than half mile). https://www.strava.com/segments/624852
I love climbs as well (currently riding a mid-compact with 11-28), but I have never seen an extended climb at averages that steep. Even the steep streets of SF, which are anomalies, are about 10%, but are short (less than half mile). https://www.strava.com/segments/624852
#50
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I hate to be the contrarian, but I don't see why it's urgent that he should change the 53-39. His 60 cadence isn't all that problematic on a hard climb, but you could gain a little (for a lot less) if you can find a 12-30 cassette. A short cage Shimano RD might (likely could) be pushed that far, if not they're not that much if we're talking 8- or 9- speed.
I just wouldn't want to push him into a compact if it wasn't really needed. With his size and room for improvement ("recently got into" it) he might be spinning up that grade in a few months.
I just wouldn't want to push him into a compact if it wasn't really needed. With his size and room for improvement ("recently got into" it) he might be spinning up that grade in a few months.
+1 in theory but I'm not sure if there are any 11 speed 11/12-30T cassettes out there. The short cage RD can handle it. I made the leap without a problem (10 speed).





