42-35 chainring thoughts...
11-09-15 | 08:15 PM
#1
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From: North, Ga.
Bikes: 3Rensho-Aerodynamics, Bernard Hinault Look - 1986 tour winner, Guerciotti, Various Klein's & Panasonic's
42-35 chainring thoughts...
All things considered, would I run out of gears with a 42-35 chainring setup?
700- 32 tubular tires and 12 tooth small cog.
Picture this on a bike setup for L'eroica.
The crankset is Campy Victory 116 bed. My only chainring options are 53, 42 and 35.
700- 32 tubular tires and 12 tooth small cog.
Picture this on a bike setup for L'eroica.
The crankset is Campy Victory 116 bed. My only chainring options are 53, 42 and 35.
11-09-15 | 08:25 PM
#2
A 12 cog for the smallest cog? Do you have a 7 speed, and what cog teeth counts?
Here's the Mike Sherman Gear calculator for 35,42,53 and 12-24 in 7 speed: Calculator link
The popup message is just telling you that you can bookmark the page to recall it later. You can change gears or cadence and the charts update on the fly.
From the calculator. 53 in blue, 42 in black, 35 in red. That 35-42 set doesn't offset very far, but does have some good half step gears.
Here's the Mike Sherman Gear calculator for 35,42,53 and 12-24 in 7 speed: Calculator link
The popup message is just telling you that you can bookmark the page to recall it later. You can change gears or cadence and the charts update on the fly.
From the calculator. 53 in blue, 42 in black, 35 in red. That 35-42 set doesn't offset very far, but does have some good half step gears.
11-09-15 | 08:45 PM
#3
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
On a largely gravel ride, you may not find yourself missing the high gears that often... 
11-09-15 | 08:51 PM
#4
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Bikes: Bikes??? Thought this was social media?!?
11-10-15 | 04:16 PM
#5
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I can spin the crank @ 30mph with a 46 chaining and a 13t cog on the freewheel. Works for me, but I can hold a 100+ rpm cadence for several miles. Not everyone enjoys that.
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When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
Last edited by Barrettscv; 11-10-15 at 07:19 PM.
11-10-15 | 07:19 PM
#6
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From: North, Ga.
Bikes: 3Rensho-Aerodynamics, Bernard Hinault Look - 1986 tour winner, Guerciotti, Various Klein's & Panasonic's
Very cool gear calculator.
I would love to find a 50 tooth or 46 tooth chainring for the Victory crank.
I mainly want the 35 tooth chainring grouped with 30 tooth cog for climbing hills.
I have tried the 52 / 36 cainring combo but the Victory rear mech was not happy.
I would love to find a 50 tooth or 46 tooth chainring for the Victory crank.
I mainly want the 35 tooth chainring grouped with 30 tooth cog for climbing hills.
I have tried the 52 / 36 cainring combo but the Victory rear mech was not happy.
11-10-15 | 09:07 PM
#7
feros ferio
Joined: Jul 2000
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From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
If you can find any Zeus or other 118mm BCD chainrings, you can elongate their mounting holes inward by one mm and mount them on your 116mm spinder. I once did that with a standard road 130mm BCD ring and my 128mm Nervar Star spider, because I wanted 52-44 instead of the 52-42 I had. Worked like a champ.
42/12 = 94.5 gear-inches, the same as the 49/14 I use on my Capo Sieger, and which I have happily used in the past on other bikes, as well. I have geared all of my road bikes between 93.5 (45/13) and 98 (47/13) on top, and I rarely wish I had something higher. With chainring sets such as 45-42, 49-46, 47-38, and 50-42, my short cage rear mechs are quite happy with the chain wrap they need to accommodate.
42/12 = 94.5 gear-inches, the same as the 49/14 I use on my Capo Sieger, and which I have happily used in the past on other bikes, as well. I have geared all of my road bikes between 93.5 (45/13) and 98 (47/13) on top, and I rarely wish I had something higher. With chainring sets such as 45-42, 49-46, 47-38, and 50-42, my short cage rear mechs are quite happy with the chain wrap they need to accommodate.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
11-11-15 | 10:25 AM
#8
feros ferio
Joined: Jul 2000
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From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
I love that gearing, and 46/13 falls right between my favorite top gears of 49/14 and 50/14.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
11-11-15 | 10:30 AM
#9
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Joined: Feb 2013
Posts: 5,070
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I had a 22/32/44 crank on my touring bike for a couple of seasons, coupled with a 12-25 7 sp cassette (IIRC), and yes, I did run out of gears on anything resembling a downhill. And I am not afraid of spinning a 130rpm. The low gears were sweet as pie for climbing, though.
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