Show us your half-step gearing!
11-23-09, 05:54 PM
#26
Wrench Savant
No pictures handy, but here it goes:
'72 Gitane Tour de France Commuter: 45-42 on 13-28 6-speed
'75 Dave Mouton Tourer: 50-45 on 14-32 5-speed
'75 Romix X-100 Tourer: 46-42 on 13-30 6-speed
'85 Lotus Odyssey Tourer: 45-42-26 on 13-30 7-speed
'85 Schiwnn Siera MTB Expedition/grocery getter: 48-44-24 on 14-32 6-speed
'85 Schwinn Le Tour Luxe Tourer: 50-46-30 on a 14-28 5-speed
'87 Research Dynamics Coyote Expedition: 46-44-24 on 13-32 7-speed
'72 Gitane Tour de France Commuter: 45-42 on 13-28 6-speed
'75 Dave Mouton Tourer: 50-45 on 14-32 5-speed
'75 Romix X-100 Tourer: 46-42 on 13-30 6-speed
'85 Lotus Odyssey Tourer: 45-42-26 on 13-30 7-speed
'85 Schiwnn Siera MTB Expedition/grocery getter: 48-44-24 on 14-32 6-speed
'85 Schwinn Le Tour Luxe Tourer: 50-46-30 on a 14-28 5-speed
'87 Research Dynamics Coyote Expedition: 46-44-24 on 13-32 7-speed
11-24-09, 12:32 PM
#27
nice idea, poor execution
Join Date: Oct 2009
Location: West Newton, MA
Posts: 395
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
It looks like the only copies of "The Low Gear Bulletin" Google knows about are in the National Library of Australia. I'd love to read them, but that's a pretty expensive trip to the library for me...
11-24-09, 01:06 PM
#28
Senior Member
Join Date: Jun 2008
Location: Big Rapids, MI
Posts: 444
Bikes: 81 or 82 Mayata 912, Mystery Peugeot
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
My old touring bike with a hybrid "quarter step plus granny" gearing system which I built in the
early 1980's and retired in 2000:
Photo taken in 1983
52 and 48 TA chainrings and a homemade 21 tooth granny
18 and 21 tooth cogs on a Sturmey Archer AW hub (a half-step in itself)
And here's a 48-45-34 triple, using Stronglight middle and inner chainrings
modified to fit on a 119mm BCD Zeus crank. A smaller inner bolt was used
to allow the 34 to work with a bolt circle intended for a minimum of 36 teeth.
early 1980's and retired in 2000:
Photo taken in 1983
52 and 48 TA chainrings and a homemade 21 tooth granny
18 and 21 tooth cogs on a Sturmey Archer AW hub (a half-step in itself)
And here's a 48-45-34 triple, using Stronglight middle and inner chainrings
modified to fit on a 119mm BCD Zeus crank. A smaller inner bolt was used
to allow the 34 to work with a bolt circle intended for a minimum of 36 teeth.
11-24-09, 01:23 PM
#29
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
I am not sure if this really qualifies as a halfstep. I do believe since the MAX OR frame was little used that the frame atleast qualifies as Classic. the frame is a Bianchi Boarala from Europe (third hand), the crank is an old Campi triple I think Olympus IIRC with 28,42,48 chainwheels and a Nexus 8 IGH. I do not think gravity will ever allow the 28 to be of much use though as the IGH is pretty low on the 1x42 already.
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
Likes For Bianchigirll:
11-24-09, 01:30 PM
#30
Senior Member
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,778
Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record
Mentioned: 77 Post(s)
Tagged: 0 Thread(s)
Quoted: 765 Post(s)
Liked 660 Times
in
351 Posts
[IMG]www.bikeforums.net/showthread.php?573011-Anti-corncob-gearing-on-a-Gitane&highlight=jonwvara+gitane[/IMG]My Gitane TdF has 45-40 chainrings and a Suntour 14-18-22-28-38 freewheel with a Duopar rear derailleur. The chainrings smooth out the big freewheel jumps pretty nicely. Not much of a high gear, but I can easily live with it--I'm a spinner, not a masher. I'm having some problems downshifting in front--when under any kind of a load, the chain wants to sit between the chainrings and spin helplessly rather than meshing with the small ring. Shifts perfectly on the stand or under no-load conditions, so it works if I anticipate those shifts, but is still a PITA. The small ring is quite worn, which may have something to do with it. I'm looking for a new 122 BCD ring. I also think that increasing the travel on the front derailleur might help, but the low-gear limit screw is already all the way out. Fortunately, I could adjust the chainline at least a mm or two to the right--which would probably be plenty--with the Phil Wood BB in installed a while back. I have the Phil Wood BB tools, but I don't have a Stronglight bottom bracket puller. If and when I buy or borrow one, I'll see if more derailleur travel solves the problem. Meanwhile, I'll accept any other suggestions.
One of my other bikes, a Lotus Unique, has a 46-42-24 front and a 14-17-20-24-28 rear. Still too low a high for the many, but I like that gearing a lot.
__________________
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
Last edited by jonwvara; 11-24-09 at 01:34 PM. Reason: can't figure out how to attach image
11-24-09, 01:37 PM
#31
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
what no pics jon? I know we in this forum hate to part with our hard earned rubles but these guys atleast claim to be able to make a 122bcd ring and the prices do not seem too unreasonable
https://www.cycleunderground.com.au/chainringdesigns.htm
https://www.cycleunderground.com.au/chainringdesigns.htm
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
11-24-09, 01:38 PM
#32
Senior Member
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,778
Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record
Mentioned: 77 Post(s)
Tagged: 0 Thread(s)
Quoted: 765 Post(s)
Liked 660 Times
in
351 Posts
Anyone know why my images referenced above aren't showing up? The new "reply" button seems to take you to "quick reply." Does the non-quick reply function still exist, and if so where the heck is it?
__________________
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
11-24-09, 01:44 PM
#33
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
attaching an image is just a bit tricky these days, as before go to 'advance reply' then in the window click on the paperclip for attachements. when the new window opens in the upper right corner is a button for add files (or something like that) another window opens, HERE IS THE TRICK! there is no text in this new window but a small button is on the bottom that is the "browse" button it takes a bit of getting used to I had to ask for help last week too
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
11-24-09, 01:53 PM
#34
Senior Member
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,778
Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record
Mentioned: 77 Post(s)
Tagged: 0 Thread(s)
Quoted: 765 Post(s)
Liked 660 Times
in
351 Posts
Okay, let's see if this works.
Yes, it does--here's my Gitane TdF referenced above. Thanks for the tutorial, Bianchigirll. I'm a good bike mechanic but digital ignoramus.
Yes, it does--here's my Gitane TdF referenced above. Thanks for the tutorial, Bianchigirll. I'm a good bike mechanic but digital ignoramus.
__________________
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
11-24-09, 02:10 PM
#35
Senior Member
Join Date: Dec 2005
Posts: 17,156
Mentioned: 481 Post(s)
Tagged: 0 Thread(s)
Quoted: 3810 Post(s)
Liked 6,690 Times
in
2,610 Posts
Here's a 46/42/24 TA triple on my Ebisu.
Neal
Neal
11-24-09, 02:34 PM
#36
Have bike, will travel
Join Date: Feb 2006
Location: Lake Geneva, WI
Posts: 12,284
Bikes: Ridley Helium SLX, Canyon Endurance SL, De Rosa Professional, Eddy Merckx Corsa Extra, Schwinn Paramount (1 painted, 1 chrome), Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Raleigh Roker, Pedal Force CG2 and CX2
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 910 Post(s)
Liked 288 Times
in
158 Posts
1972 Schwinn Paramount that currently has a 52 & 49 Campagnolo Record crankset and a 14-26 5-speed freewheel.
11-24-09, 05:33 PM
#37
Senior Member
Join Date: Feb 2008
Location: SRQ
Posts: 530
Bikes: '69 Raleigh DL-1, '72 Paramount, '75 Eisentraut, '80 A-D Vent Noir II, '82 A-D Inter 10, '83 Motobecane Grand Touring, '83 Stumpjumper, '84 Masi GC, '87 Recherche, '87 Tesch 101, '88 Tesch S-22, '88 Davidson...
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
Corncob 12-20 on Austro-Daimler Ultima SL running Super Record (t'wasn't easy)...
11-24-09, 05:46 PM
#38
Senior Member
Join Date: Jan 2005
Location: Baltimore, MD
Posts: 5,373
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 2482 Post(s)
Liked 2,952 Times
in
1,677 Posts
Wonder whether anyone will post a Cannondale touring bike from the one year in the mid-'80s that they came with a two-chainring half-step setup, to the no doubt near-universal puzzlement of Cannondale dealers everywhere. Cannondale gave up on that in a hurry. The product manager must have had some explaining to do.
11-24-09, 07:14 PM
#39
Full Member
Join Date: Jan 2009
Location: I live in a rural canyon in unincorporated Los Angeles County
Posts: 397
Bikes: Giant Mountain Bike
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
11-24-09, 07:53 PM
#40
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
but a IGH with a DA was super easy *giggle*
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
11-24-09, 09:49 PM
#41
feros ferio
Thread Starter
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 21,796
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;
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1392 Post(s)
Liked 1,324 Times
in
836 Posts
That's the infamous half-step-with-a-gap Schwinn Paramount default of that era: 52-49 / 14-16-18-23-26. They left out a much-needed 20-tooth cog, creating a horrible gap right where I need gears. That is a bike which would benefit immensely from a conversion to an ultra-6 freewheel: 52-49 / 14-16-18-20-23-26, which can be alternated with 52-44 / 14-16-18-20-23-26 for hill work. This is one of the coolest benefits of some half-step setups -- the ease with which they can be converted to 1.5-step. During the 1970s I put 50-47 / 14-16-18-20-23 on my Nishiki and in 5 minutes could convert it to 50-42 / 14-16-18-20-23 for hills. I run the same thing today on my Bianchi, with the addition of a 26T 6th cog.
__________________
"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
11-24-09, 11:49 PM
#42
Rustbelt Rider
Join Date: Oct 2008
Location: Canton, OH
Posts: 9,104
Bikes: 1990 Trek 1420 - 1978 Raleigh Professional - 1973 Schwinn Collegiate - 1974 Schwinn Suburban
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 261 Post(s)
Liked 372 Times
in
177 Posts
I didn't even understand what half step gearing was when I picked this Raleigh up. It looks to be a half step plus granny.... with a major gap in the freewheel. I'll have to count but I think the gap is a difference of 6 or 8 teeth.
I need a better picture of the crank:
I need a better picture of the crank:
__________________
|^^^^^^^^^^^^^^| ||
|......GO.BROWNS........| ||'|";, ___.
|_..._..._______===|=||_|__|..., ] -
"(@)'(@)"""''"**|(@)(@)*****''(@)
|^^^^^^^^^^^^^^| ||
|......GO.BROWNS........| ||'|";, ___.
|_..._..._______===|=||_|__|..., ] -
"(@)'(@)"""''"**|(@)(@)*****''(@)
11-25-09, 12:58 AM
#45
www.theheadbadge.com
Join Date: Sep 2005
Location: Southern Florida
Posts: 28,513
Bikes: https://www.theheadbadge.com
Mentioned: 124 Post(s)
Tagged: 0 Thread(s)
Quoted: 2422 Post(s)
Liked 4,392 Times
in
2,092 Posts
53/49 with a 6-speed Shimano 600 freewheel (not geared to anything in particular - new rear wheel will be a 5-speed block):
Click for large
Soon-to-be half-step on my '72 Paramount. John made a point about the stock Paramount gearing with the 49/52 - I intend to rectify it with a 14-16-18-21-24:
Click for large
-Kurt
Click for large
Soon-to-be half-step on my '72 Paramount. John made a point about the stock Paramount gearing with the 49/52 - I intend to rectify it with a 14-16-18-21-24:
Click for large
-Kurt
__________________
11-25-09, 02:13 AM
#47
headtube.
Join Date: Sep 2008
Posts: 803
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 3 Times
in
3 Posts
I like half step but not really on C&V bikes! Too hard to pull off double shifts with downtube levers... whacking both levers at once on STIs is much simpler. 
My classic bikes tend to have crossover gearing.
Here is the gearing on my non-classic (and grimy) tourer, 24-39-42 x 11-13-15-17-20-23-26-30-34:
PB240051.jpg
and parts destined for my tandem, 24-42-46 x 12-14-17-20-24-29-34:
PB240054.jpg
My classic bikes tend to have crossover gearing.Here is the gearing on my non-classic (and grimy) tourer, 24-39-42 x 11-13-15-17-20-23-26-30-34:
PB240051.jpg
and parts destined for my tandem, 24-42-46 x 12-14-17-20-24-29-34:
PB240054.jpg
11-25-09, 07:58 AM
#48
Senior Member
Join Date: Dec 2005
Posts: 17,156
Mentioned: 481 Post(s)
Tagged: 0 Thread(s)
Quoted: 3810 Post(s)
Liked 6,690 Times
in
2,610 Posts
Old-school half-step gearing: A Williams chainset and Benelux FD on a '61 Raleigh Lenton Grand Prix:
Neal
Neal
11-25-09, 08:17 AM
#49
Have bike, will travel
Join Date: Feb 2006
Location: Lake Geneva, WI
Posts: 12,284
Bikes: Ridley Helium SLX, Canyon Endurance SL, De Rosa Professional, Eddy Merckx Corsa Extra, Schwinn Paramount (1 painted, 1 chrome), Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Raleigh Roker, Pedal Force CG2 and CX2
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 910 Post(s)
Liked 288 Times
in
158 Posts
That's the infamous half-step-with-a-gap Schwinn Paramount default of that era: 52-49 / 14-16-18-23-26. They left out a much-needed 20-tooth cog, creating a horrible gap right where I need gears. That is a bike which would benefit immensely from a conversion to an ultra-6 freewheel: 52-49 / 14-16-18-20-23-26, which can be alternated with 52-44 / 14-16-18-20-23-26 for hill work. This is one of the coolest benefits of some half-step setups -- the ease with which they can be converted to 1.5-step. During the 1970s I put 50-47 / 14-16-18-20-23 on my Nishiki and in 5 minutes could convert it to 50-42 / 14-16-18-20-23 for hills. I run the same thing today on my Bianchi, with the addition of a 26T 6th cog.
I'm also considering the 13-24 IRD (13-15-17-20-24) freewheel.
Is it possible to install a 6 speed freewheel without increasing the dropout spacing?
Michael
Last edited by Barrettscv; 11-25-09 at 08:57 AM.
11-25-09, 08:59 AM
#50
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
WOW there are some beautiful bikes here I still don't understand whay people ride CF *giggle*
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk