Where can I get a 53 or 54 ring?
03-25-17, 10:19 PM
#1
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Where can I get a 53 or 54 ring?
One of my bikes is 30-39-50, 130 BCD.
50 isn't big enough for what I need to do. I spun out 50x11 at 110rpm or more for over six miles today.
It's an FSA Gossamer triple on a 9 speed SRAM chain and cassette.
Help?
50 isn't big enough for what I need to do. I spun out 50x11 at 110rpm or more for over six miles today.
It's an FSA Gossamer triple on a 9 speed SRAM chain and cassette.
Help?
03-25-17, 10:31 PM
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03-25-17, 10:43 PM
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Your maximum cadence was 109 rpm?
03-25-17, 11:15 PM
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I don't know how a maximum could include zeroes, but I get the idea.
03-26-17, 02:48 AM
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You need to come to Oregon for a better descent.
CraterLakeMetricCentury.jpg
Of course, it wasn't all downhill. Going the other direction was a pretty unrelenting climb.
As far as chainrings, how much have you looked?
Vuelta makes rings, both Flat (no pins), and Pinned.
It looks like pinned, they only go up to 53T.
https://www.vueltausa.com/components...lack-1319.html
Flat they go up to 60T, but maybe not as smooth shifting.
https://www.vueltausa.com/components...mm-38-60t.html
Just about any brand should have 53/39 chainring sets. Shimano. FSA, etc.
Hmmm..
Ramped and pinned for larger than 53 seems to be a problem. Campagnolo goes at least up to 55T in 135 bcd.
It looks like Origin8 has ramped and pinned rings in 54T and 56T.
Product Description | Origin8
CraterLakeMetricCentury.jpg
Of course, it wasn't all downhill. Going the other direction was a pretty unrelenting climb.
As far as chainrings, how much have you looked?
Vuelta makes rings, both Flat (no pins), and Pinned.
It looks like pinned, they only go up to 53T.
https://www.vueltausa.com/components...lack-1319.html
Flat they go up to 60T, but maybe not as smooth shifting.
https://www.vueltausa.com/components...mm-38-60t.html
Just about any brand should have 53/39 chainring sets. Shimano. FSA, etc.
Hmmm..
Ramped and pinned for larger than 53 seems to be a problem. Campagnolo goes at least up to 55T in 135 bcd.
It looks like Origin8 has ramped and pinned rings in 54T and 56T.
Product Description | Origin8
03-26-17, 06:58 AM
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03-26-17, 07:04 AM
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03-26-17, 07:09 AM
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The analysis page on that segment shows that you peaked above 105 only two or three times, and only very briefly, with a max of 109. Average was 97, and this was with me cropping out the 0 cadence stuff at the beginning of the segment. Even if you 'spin out' at 110, you didn't hit that. Further, this looks like a good opportunity to work on your spinning so that you're not spinning out at 110, which is on the low side for spinning out.
03-26-17, 07:22 AM
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But anyway, I'd ditch the triple all together and just go with a 52/36 mid-compact. Or a 53/39 with an 11-23 cassette if you think you'll be going really, really fast.
03-26-17, 07:47 AM
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I noticed that your power is actual, not estimated. Taking that in to account, we have an average cadence under 100, average power ~220w. I don't think that you're outstripping the capability of your gearing.
03-26-17, 08:58 AM
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Personally, I run a 50/11 on my gravel bike, and am often "looking for another gear" at the shifter, to find I'm in my biggest gear already and pedaling faster than I want. To me, I see little point in being maxed out RPM-wise, for regualr riding. Particularly downhill, where the pedal pressure can help control the bike (by resisting bump effects), I see little point in turning high rpms. I get some guys just can't produce torque, but I find it rude to tell another rider, without knowing anything about them, that they should pedal faster. The idea you need to be turning over 100rpm to be riding well is absurd, but widespread here; you can match an Hour Record cadence at 102rpm (Voigt) or best Brändle's (96rpm)
03-26-17, 09:15 AM
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I rock a 55 ring on one of my bikes. Of course, it has a 451 wheel. 
Seriously, chainrings are easy to find on the net. Search engine of choice will find a lot of options.
Seriously, chainrings are easy to find on the net. Search engine of choice will find a lot of options.
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03-26-17, 09:19 AM
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in bagnomaria
03-26-17, 09:40 AM
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03-26-17, 09:42 AM
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03-26-17, 10:16 AM
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Personally, I run a 50/11 on my gravel bike, and am often "looking for another gear" at the shifter, to find I'm in my biggest gear already and pedaling faster than I want. To me, I see little point in being maxed out RPM-wise, for regualr riding. Particularly downhill, where the pedal pressure can help control the bike (by resisting bump effects), I see little point in turning high rpms. I get some guys just can't produce torque, but I find it rude to tell another rider, without knowing anything about them, that they should pedal faster. The idea you need to be turning over 100rpm to be riding well is absurd, but widespread here; you can match an Hour Record cadence at 102rpm (Voigt) or best Brändle's (96rpm)
At the same speed, a 53/11 puts him at ~95 rpm. I dunno - not looking like a silver bullet to me, but YMMV.
03-26-17, 10:22 AM
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Tuck & coast probably gets you about the same speed and you save energy for when you need it.
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03-26-17, 11:49 AM
#23
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Personally, I run a 50/11 on my gravel bike, and am often "looking for another gear" at the shifter, to find I'm in my biggest gear already and pedaling faster than I want. To me, I see little point in being maxed out RPM-wise, for regualr riding. Particularly downhill, where the pedal pressure can help control the bike (by resisting bump effects), I see little point in turning high rpms. I get some guys just can't produce torque, but I find it rude to tell another rider, without knowing anything about them, that they should pedal faster. The idea you need to be turning over 100rpm to be riding well is absurd, but widespread here; you can match an Hour Record cadence at 102rpm (Voigt) or best Brändle's (96rpm)
I recently started using a 52-36 and am very happy I did. I've posted the benefits I get on here before & folks always focus on spinning out. That's not why I like mine. I like it so that I can pedal at the rpm I want when on quick descents. I hated spinning at over 90 while on a descent or gradual decline just to keep up with the group. I'm faster over the course of the ride if I spin at 80 while cruising in the draft.
03-26-17, 01:03 PM
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You could try what I have running on one of my bikes. A beautifully shifting Wickwerks 53/34 setup.
I'm not the world's best climber hence the 34 but as sweet as their ramped system shifts the rings I'd use then on a more standard setup except for the look not really working on most of my classic bikes.
I'm not the world's best climber hence the 34 but as sweet as their ramped system shifts the rings I'd use then on a more standard setup except for the look not really working on most of my classic bikes.
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Last edited by jamesdak; 03-26-17 at 07:48 PM.
03-26-17, 01:08 PM
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In 'spinning out for over 6 miles,' he had three or four brief periods over 100 rpm. I don't think that 100 rpm is a very high bar of entry, but I've only pedaled with my own legs (and I'm no manic spinner, myself), so we'll look at a 53T as suggested -
At the same speed, a 53/11 puts him at ~95 rpm. I dunno - not looking like a silver bullet to me, but YMMV.
At the same speed, a 53/11 puts him at ~95 rpm. I dunno - not looking like a silver bullet to me, but YMMV.
I'm in my cruising sweetspot anywhere from 85-95rpm, and do not like to pedal at +100rpm for miles on end, especially as I said, downhill. I certainly can and do pedal well north of 100rpm, but it's for relatively brief surges, sprints, stuff like that, because it unneccessarily drives up HR unless I'm putting down more than Tempo level power.
I do mostly club riding as well, so I see all kinds of riders, from nationally ranked racers (Lotto-Jumbo's Vermuelen came out of our club), to local top amateur racers, and well-trained to not-so-well trained enthusiasts, men and women alike, so seeing a variety of 'preferred pedaling speeds' is not unusual to me.