Hill Climbing, Cadence, & Gears
#26
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Strava lies. Just saying.
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#28
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Sorry mate. Just having a bit of fun. In the absence of a powermeter, I to watch those power numbers. But, I take them with a "huge" grain of salt. I find it somewhat entertaining when a bunch of clydes start talking power numbers based on strava. .......Just a minute, let me go edit my "weight".
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Ego prohibits my adoption of your proposed solution, no matter whether it makes logical sense or not. For the sake of two hills out of all the hills in the area, I will not adopt a triple! The thing that keeps me from spending the bit of coin for a 34/50 isn't any loss of range. As has been pointed out many times 50-11 is actually a taller gear than 53-12. It's two things: One, the fact that while riding with Mrs. Fred I would find myself in the same auckward situation as her, with regard to constantly cross chaining (one way or the other) to maintain her comfortable cruising pace. Two, the increased gap between ratios, which would be completely unacceptable on my Saturday Morning Old Farts Ride. Although, at least on that ride, I would be spending the majority of my time in the big ring and several of the other old farts seem to do o.k. with a 34/50. But, on the flats, I really appreciate close ratios and the ability to fine tune cadence. Do I want to sacrifice that for "two" hills? Neither of which lasts more than 90 seconds?
I don't understand why people want to point out that a 50-11 is bigger than a 53-12? Sure it is but it's not bigger than a 53-11. It's best to compare apples to apples. The advantage of running a triple is that you can run a tighter cassette. I personally am not fond of big jumps (on my compact) so I typically run an 11-25 cassette and for hilly rides a 11-27. I spend most of my time in the triple on the middle chainring so cross chaining isn't really an issue.
Just as an aside, I took my compact on a hilly century a few years back and was with the fast (Pro/cat1/cat2) guys for the first 65 miles of hills then we hit a 5 mile flat section and I got spit off the back of the group because I couldn't spin fast enough. That really sucked. Especially answering the "what happened to you" questions afterward... I still use the compact in the right circumstances but I'd rather have people make fun of my triple as I blow their doors off than get spit out the back because I don't have the right gears.
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OP, keeping it simple, you will definitely notice the difference if you get a compact. I agree with Homeyba that a triple is superior, but it's a more expensive switch.
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As far as spinning out, I already run a 50 on the large ring; so I wouldn't be 'losing' anything with the compact cranks over my current set-up. I would only be gaining on the low end. I would really rather not go to a triple, though. But I do appreciate the suggestion.
A big reason that I was considering the switch is that I was actually considering a Quarq or Power2Max power meter. If I were to go this route, I would need to change the cranks anyway and thought that a compact may be the ticket. It is more than this one hill though. The area that I live in is all hills. I can't think of any stretch of road that is flat within 20 miles of my house, so this would not be solely for one hill. Hills are a way of life for me.
A big reason that I was considering the switch is that I was actually considering a Quarq or Power2Max power meter. If I were to go this route, I would need to change the cranks anyway and thought that a compact may be the ticket. It is more than this one hill though. The area that I live in is all hills. I can't think of any stretch of road that is flat within 20 miles of my house, so this would not be solely for one hill. Hills are a way of life for me.
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for me hills and cadence don't relate to each to each other. hills are a challenge and anythign you can do to get up them regardless of cadence. triples are great. low gears are great. I do not care how slow I go up hills. I do care that I can move myself fast enough not to fall over and I do care that I can keep a fast enough cadence that I am not punishing my knees too much.
practicing any hills makes you better at those hills. I remember a series of hills on my homeward commute that kicked my butt even with my triple hybrid that was roadified but I got much better over time. then I got a new bike with higher gears and I had to work those hills all over again and get even stronger, but I did it.
btw goldfinch ~ that road looks like a no-shoulder kill zone to me ... be careful
practicing any hills makes you better at those hills. I remember a series of hills on my homeward commute that kicked my butt even with my triple hybrid that was roadified but I got much better over time. then I got a new bike with higher gears and I had to work those hills all over again and get even stronger, but I did it.
btw goldfinch ~ that road looks like a no-shoulder kill zone to me ... be careful
Last edited by rumrunn6; 07-26-12 at 10:43 AM.
#34
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I've read that generally anything below 50rpm for sustained periods of time will eventually hurt your knees.
I know I have to hop off whenever I hit around 50 or my legs will give out. I'm not sure doing a mile at 30rpm is very smart, but I am not an expert either... I just know that I couldn't do it, and that 5-6 rpm extra is probably not significant enough to bother with.
My solution was going with a 26/34 low gear. I know most cyclists succumb to peer pressure and get gearing that is wildly inappropriate for them because they want to pretend they are pros, but at some point we have to realise that only the right tools are going to help us do the job properly. Perhaps you could go with a road triple, those often go down to a 30t granny, though at 3.4mph that should still only get you around 10-11 rpm extra, at around 40-41rpm.
For reference my 26/34 lets me do 3.4mph at 57rpm. I am not at all ashamed of using mountain bike gearing, especially if I'm climbing actual mountains.
I know I have to hop off whenever I hit around 50 or my legs will give out. I'm not sure doing a mile at 30rpm is very smart, but I am not an expert either... I just know that I couldn't do it, and that 5-6 rpm extra is probably not significant enough to bother with.
My solution was going with a 26/34 low gear. I know most cyclists succumb to peer pressure and get gearing that is wildly inappropriate for them because they want to pretend they are pros, but at some point we have to realise that only the right tools are going to help us do the job properly. Perhaps you could go with a road triple, those often go down to a 30t granny, though at 3.4mph that should still only get you around 10-11 rpm extra, at around 40-41rpm.
For reference my 26/34 lets me do 3.4mph at 57rpm. I am not at all ashamed of using mountain bike gearing, especially if I'm climbing actual mountains.
If you swap out your chainrings you may also need a new FD - they tend to have limits relating to the maximum tooth difference between large and small rings, and a minimum tooth difference between large and middle ring (if it's a triple)
My MTB chainrings are 44-32-22, my cross bike has 50-39-30 and my friend's touring bike is 48-38-28. As you say, if you've got the right tools you can do the job. Chris Froome might be able to climb the Pyrenees with a 39/25 gear but I can say with some confidence that if I did manage it (which is doubtful) I'd be desperately slow, to the point anyone timing me would be more likely to use a calendar than a stopwatch.
If your RD will support a larger cassette you can gain a lot by increasing the size of it. While on the face of it you might not like the idea losing your high gears (I instinctively want to keep my 11-tooth sprocket at the back even though I never actually use it) the simple reality is that you probably don't use the big gears all that much. On my MTB I'm often in the largest gears when I'm on the road, on my cross bike I think the only time I've ever used the 11t sprocket is when I was testing the bike after giving it a good clean.
My cross bike seems to give me a wide enough range to do all I need and then some, with gearing that ranges from 50-11 (that I never use) right down to 30-32 (that I have used several times when climbing). Depending how you are at climbing generally, in terms of your own strength and the hills around you, a 48-38-28 paired with an 11-32 cassette will probably help.
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Don't worry about the freds that will think you're less cool for running a triple. In 20 years it won't matter if you need knee replacements. They don't weigh that much more than a double, and you'll get more benefits from losing the weight from yourself first, we are clydes after all. And contrary to popular opinion from people who don't run triples, they're not hard to shift either. Mine has never once had an issue.
It is more than this one hill though. The area that I live in is all hills. I can't think of any stretch of road that is flat within 20 miles of my house, so this would not be solely for one hill. Hills are a way of life for me.
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Ok but if you're willing to plunk down $1-2k for a power meter crank, surely it's not the cost that's the issue here... ?
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Not entirely, I just really don't like a triple. I had one on a cross bike and I was always cross chaining, dropping the chain, and it just didn't give positive feedback for me. I hold nothing against those who have them, but I just don't care for them personally. Maybe if I had had a better experience previously, I would give it another go.
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So look at a compact along with a long cage RD and a cassette that offers a nice wide range like 11-34. The change from 39/27 to 34/34 should make a difference you'll appreciate.
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#41
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This is really where I am currently leaning. I think this will make enough difference to make these steep sections more bearable.
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Not entirely, I just really don't like a triple. I had one on a cross bike and I was always cross chaining, dropping the chain, and it just didn't give positive feedback for me. I hold nothing against those who have them, but I just don't care for them personally. Maybe if I had had a better experience previously, I would give it another go.
I guess the only realistic solution you're going to have if you're intent on not changing derailleurs (assuming 10 speed?) is going to a compact 34 and using a Tiagra 12-30 cassette. I've heard the 12-30 works fine without a long cage. That gives you 34/30 which works out to about 40rpm @ 3.5mph. Still not really optimal but you get to stick with a relatively compact spacing in the cassette.
Another option would be to go for a long cage derailleur and slap an 11-32, 11-34 or 11-36 on the back. These gears are widely spaced though so they lose the nice 1-tooth increments near the top end.
34/32 works out to 42rpm @ 3.5mph
34/34 works out to 45rpm @ 3.5mph
34/36 works out to 48rpm @ 3.5mph
There's a new cassette coming out next year from SRAM that makes me laugh. It's a 10-42 cassette, designed for single cranks, and probably won't ever work on a road type bike, but just for fun:
34/42 works out to 55rpm @ 3.5mph
And on my crank:
26/42 works out to 72rpm @ 3.5mph. Daaamn. That's for, you know, whenever I feel like climbing the face of El Capitan, or something.
All figures were calculated assuming 700Cx23mm tires. 25mm and higher will obviously decrease the cadence to maintain the same speed since you're traveling more per each pedal stroke. Similarly going to 26" tires will increase the cadence.
So anyway, as I see it, those are your options.
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Not entirely, I just really don't like a triple. I had one on a cross bike and I was always cross chaining, dropping the chain, and it just didn't give positive feedback for me. I hold nothing against those who have them, but I just don't care for them personally. Maybe if I had had a better experience previously, I would give it another go.
A compact might be the proper set-up for you, I don't know, you know how you ride and the terrain you are riding in better than I do. Your comment about just getting another bike was a good one, you can never have too many bikes!
Last edited by Homeyba; 07-26-12 at 08:54 AM.
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Here are some graphs to illustrate a few alternatives;
I use a 50, 39 & 26t Shimano road triple, a 50 & 34 compact is on the right. The 26t is a Salsa chainring, a 30t is standard;
Below is a 50 & 34 compact with a 11-32 cassette v the common 50, 39 & 30t Shimano road triple. Notice the large gaps between the ratios on the compact. The range is about the same.
The 39t chainring can be used without concern of cross-chaining and provides a great set of useful ratios. I use the 39t 60% of the time, it provides close ratios from 10 to 25 mph.
I use a 50, 39 & 26t Shimano road triple, a 50 & 34 compact is on the right. The 26t is a Salsa chainring, a 30t is standard;
Below is a 50 & 34 compact with a 11-32 cassette v the common 50, 39 & 30t Shimano road triple. Notice the large gaps between the ratios on the compact. The range is about the same.
The 39t chainring can be used without concern of cross-chaining and provides a great set of useful ratios. I use the 39t 60% of the time, it provides close ratios from 10 to 25 mph.
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Last edited by Barrettscv; 07-26-12 at 09:03 AM.
#45
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Not entirely, I just really don't like a triple. I had one on a cross bike and I was always cross chaining, dropping the chain, and it just didn't give positive feedback for me. I hold nothing against those who have them, but I just don't care for them personally. Maybe if I had had a better experience previously, I would give it another go.
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200w is actually at the low end of what a reasonably trained cyclist can achieve for FTP. So to say "perhaps the best of us can go up to 200w" makes me curious what you are basing your numbers on? Do you have any studies to support this, are you using numbers from a power meter, or are you simply guessing?
To put what i am saying into perspective on 19May I weighed 240 pounds and climbed from Front Royal Virginia up to Skyline Drive. On the first leg from the park entrance to the visitor center I averaged 215w over 34minutes. I wasn't pushing the pace by any means. I just climbed at a comfortable speed because I still had another 36 miles to go of a metric on the drive. My point is I am far from "the best of us" on this forum and I averaged above your 200w number fairly easily.
To put what i am saying into perspective on 19May I weighed 240 pounds and climbed from Front Royal Virginia up to Skyline Drive. On the first leg from the park entrance to the visitor center I averaged 215w over 34minutes. I wasn't pushing the pace by any means. I just climbed at a comfortable speed because I still had another 36 miles to go of a metric on the drive. My point is I am far from "the best of us" on this forum and I averaged above your 200w number fairly easily.
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I have a couple of monster hills near where I live. (Monsters to me, anyway.) My hill climbing gear is 39x27, and one one of these hills I can only manage a cadence in the low 30s for a certain stretch. It gets to about 18% grade for 80 to 100 meters. Most of this hill I can usually get a cadence aroung 40. This particular hill is not quite a mile in length, but it absolutely kills me. As soon as I get past this, I have miles and miles of great cycling roads, so I would love to be able to tackle this hill more easily.
I looked at the online calculators and for the same climbing speed, I would only gain about 5 or 6 rpm if I switched to a compact crank with a 34 tooth ring. Is this enough of a difference to worry about? Would I pick up some speed doe to the easier gear?
If I did get the smaller cranks, should I hang on to the larger ones incase they were needed down the road? Or just sell them to offset the cost?
I know losing weight would still be the best remedy, but I just live in a very hilly section of the country. I don't want to hurt my knees from mashing on the pedals at too low of a cadence. What would you all recommend?
I looked at the online calculators and for the same climbing speed, I would only gain about 5 or 6 rpm if I switched to a compact crank with a 34 tooth ring. Is this enough of a difference to worry about? Would I pick up some speed doe to the easier gear?
If I did get the smaller cranks, should I hang on to the larger ones incase they were needed down the road? Or just sell them to offset the cost?
I know losing weight would still be the best remedy, but I just live in a very hilly section of the country. I don't want to hurt my knees from mashing on the pedals at too low of a cadence. What would you all recommend?
Cadence of 30-40 is just too low.
Need the right tool for the job: that's a 11-34 or 12-34 cassette, a long cage RD, and a compact crank (50-34). I'd say to do it in steps, first change the cassette and RD, but since most likely you'll need a new chain, might as well change the crankset to 50-34 and be done with it in one swoop.
Ratio spacing mentioned is overrated IMO, range is the issue and compacts give you as much range as you'll possibly need. 50-11 or 50-12 gives you plenty of flat/downhill terrain speed (downhill, bodyweight will make you gain speed faster than any spinning so unlikely to outspun 50-12 or 50-11 unless you turn into a downhill demon).
Unlikely to outgrow the set up: If fitness improves to the point that the 34-32-30 cogs stop being used (with cadences 60 and above) you simply change the rear cassette back to the 11-27 you're currently using (no need to do it, just noting that it'll work fine with the long cage RD).
Good luck
#49
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If SRAM kit then throw on an X9 and a 12-36 and be done with it.
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...Ratio spacing mentioned is overrated IMO, range is the issue and compacts give you as much range as you'll possibly need. 50-11 or 50-12 gives you plenty of flat/downhill terrain speed (downhill, bodyweight will make you gain speed faster than any spinning so unlikely to outspun 50-12 or 50-11 unless you turn into a downhill demon). ...
Having said all that, the compact is a very legitimate choice when used in the appropriate circumstances. The problem with the "it works for me therefore it must work for you" religion is that it doesn't always work for the other person. I have a compact because I was sold the cool aid that it was the way to go and for me in most cases it wasn't. I still use it when the occasion demands it but not very often (about as often as I use my STD double setup. Hopefully what the OP will do is look at all the alternatives and make the appropriate choice for his requirements. If he goes out and buys what you or I think is the optimal set up he may be sorely disappointed.
Last edited by Homeyba; 07-26-12 at 01:21 PM.