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Cyclo Sturmey Adapters
Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. -- meb |
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#2
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Cyclo Sturmey Adapters
meb wrote:
Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. When I find a way to put a 10-speed cassette on a Rohloff hub and four chainrings on a Schlumpf bottom bracket, I will be happy! And of course, I will tape a print out of a spreadsheet with all 1120 ratios to my handlebars. -- Tom Sherman - Holstein-Friesland Bovinia The weather is here, wish you were beautiful |
#3
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Cyclo Sturmey Adapters
Tom Sherman Wrote: meb wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. When I find a way to put a 10-speed cassette on a Rohloff hub and four chainrings on a Schlumpf bottom bracket, I will be happy! And of course, I will tape a print out of a spreadsheet with all 1120 ratios to my handlebars. -- Tom Sherman - Holstein-Friesland Bovinia The weather is here, wish you were beautiful Who needs adaptors? I'm driving a Rohloff through a 5 speed mid drive for 70 ratios. It replaces a 105 speed derailleur system. http://tinypic.com/fullsize.php?pic=...&capwidth=true http://tinypic.com/fullsize.php?pic=...&capwidth=true All but the largest drive gear on the mid drive are unuseable,however, if I am to abide by Rohloff's admonition to keep the input ratio above 2.4 to one. Dan Burkhart www.boomerbicycle.ca -- Dan Burkhart |
#4
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Cyclo Sturmey Adapters
On Thu, 03 Apr 2008 07:22:50 -0500, Tom Sherman
wrote: meb wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. When I find a way to put a 10-speed cassette on a Rohloff hub and four chainrings on a Schlumpf bottom bracket, I will be happy! And of course, I will tape a print out of a spreadsheet with all 1120 ratios to my handlebars. Ah the bike-dork spirit of Sheldon lives on. |
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Cyclo Sturmey Adapters
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#6
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Cyclo Sturmey Adapters
In article ,
Dan Burkhart wrote: Tom Sherman Wrote: meb wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. When I find a way to put a 10-speed cassette on a Rohloff hub and four chainrings on a Schlumpf bottom bracket, I will be happy! And of course, I will tape a print out of a spreadsheet with all 1120 ratios to my handlebars. Who needs adaptors? I'm driving a Rohloff through a 5 speed mid drive for 70 ratios. It replaces a 105 speed derailleur system. http://tinypic.com/fullsize.php?pic=...&capwidth=true http://tinypic.com/fullsize.php?pic=...&capwidth=true All but the largest drive gear on the mid drive are unuseable,however, if I am to abide by Rohloff's admonition to keep the input ratio above 2.4 to one. What are the cog counts on the mid drive? A 15-16 is ideal for splitting the Rohloff 13.5% jumps. I do not see the the gear changing mechanism for the mid drive. -- Michael Press |
#7
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Cyclo Sturmey Adapters
On Apr 3, 3:50*am, meb
wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. *How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. -- meb Geez, some people just can't answer in a straightforward fashion... Here's a nice pictu http://www.sturmey-archerheritage.com/detail.php?id=316 The cogs were held on the standard S-A snap ring. Part of the trick to the conversion was the extra meat on the splines of the Cyclo conversion. The standard S-A sprockets (HSL715 through HSL720) were dished and there were a couple spacers (HMW127) (see http://sheldonbrown.com/harris/sturm...-parts.html#16 ) to boot, which allowed quite a bit of adjustment in chainline. It also made lots of room for the Cyclo 2- and 3-speed conversions. I once made a 6-speed with a S-A hub, two sprockets, and a Shimano DX two-speed BMX derailleur. Sheer nuttiness, but it worked. If you have a Sachs/SRAM DualDrive hub, these won't work. However, these are easier to customize since they accept standard Shimano- splined cassettes (mostly). If you still want to explore gearhead insanity, I can recall reading stories of early mountain bikers using JB-Weld and pins to attach wide- range freewheels (this was almost pre-cassette) to the Sturmey-Archer driver. It took a little doing to get the alignment right, but it worked! At least... until the Sturmey hub exploded on the climb. Jeff |
#8
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Cyclo Sturmey Adapters
In article
, JeffWills wrote: On Apr 3, 3:50*am, meb wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. *How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. Geez, some people just can't answer in a straightforward fashion... Here's a nice pictu http://www.sturmey-archerheritage.com/detail.php?id=316 The cogs were held on the standard S-A snap ring. Part of the trick to the conversion was the extra meat on the splines of the Cyclo conversion. The standard S-A sprockets (HSL715 through HSL720) were dished and there were a couple spacers (HMW127) (see http://sheldonbrown.com/harris/sturm...-parts.html#16 ) to boot, which allowed quite a bit of adjustment in chainline. It also made lots of room for the Cyclo 2- and 3-speed conversions. I once made a 6-speed with a S-A hub, two sprockets, and a Shimano DX two-speed BMX derailleur. Sheer nuttiness, but it worked. If you have a Sachs/SRAM DualDrive hub, these won't work. However, these are easier to customize since they accept standard Shimano- splined cassettes (mostly). If you still want to explore gearhead insanity, I can recall reading stories of early mountain bikers using JB-Weld and pins to attach wide- range freewheels (this was almost pre-cassette) to the Sturmey-Archer driver. It took a little doing to get the alignment right, but it worked! At least... until the Sturmey hub exploded on the climb. That's funny. Gotta love JB-Weld. Just two of the fixes in our shack: Sliding shower door corner joints exploded. Running perfectly ten years after the JB-Weld experience. Six inch circular two sided mirror in rotating plastic gimbal. Dropped; plastic mount breaks. Looking good and working perfectly after the JB-Weld experience. -- Michael Press |
#9
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Cyclo Sturmey Adapters
JeffWills Wrote: On Apr 3, 3:50*am, meb wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. *How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. -- meb Geez, some people just can't answer in a straightforward fashion... Here's a nice pictu http://www.sturmey-archerheritage.com/detail.php?id=316 The cogs were held on the standard S-A snap ring. Part of the trick to the conversion was the extra meat on the splines of the Cyclo conversion. The standard S-A sprockets (HSL715 through HSL720) were dished and there were a couple spacers (HMW127) (see http://sheldonbrown.com/harris/sturm...-parts.html#16 ) to boot, which allowed quite a bit of adjustment in chainline. It also made lots of room for the Cyclo 2- and 3-speed conversions. I once made a 6-speed with a S-A hub, two sprockets, and a Shimano DX two-speed BMX derailleur. Sheer nuttiness, but it worked. If you have a Sachs/SRAM DualDrive hub, these won't work. However, these are easier to customize since they accept standard Shimano- splined cassettes (mostly). If you still want to explore gearhead insanity, I can recall reading stories of early mountain bikers using JB-Weld and pins to attach wide- range freewheels (this was almost pre-cassette) to the Sturmey-Archer driver. It took a little doing to get the alignment right, but it worked! At least... until the Sturmey hub exploded on the climb. Jeff Thanks for the links and info. Any idea on how much torque the Sturmey hubs could handle before they exploded? -- meb |
#10
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Cyclo Sturmey Adapters
Michael Press Wrote: In article , JeffWills wrote: On Apr 3, 3:50*am, meb wrote: Had come accross the Cyclo Adapters that place a 3 or 2 sprocket cluster on the Sturmey 3 speeds. *How did they both lock onto the hub yet onto each other? Seems if this were merely cogs bolted together, there would be no way of locking the unit or inner sprocket to the hub due to the adjacent sprocket to the being in the way. Did these adapters work on other internal gear hubs? I have a dual drive, but it might be fun to customize other hubs. Geez, some people just can't answer in a straightforward fashion... Here's a nice pictu http://www.sturmey-archerheritage.com/detail.php?id=316 The cogs were held on the standard S-A snap ring. Part of the trick to the conversion was the extra meat on the splines of the Cyclo conversion. The standard S-A sprockets (HSL715 through HSL720) were dished and there were a couple spacers (HMW127) (see http://sheldonbrown.com/harris/sturm...-parts.html#16 ) to boot, which allowed quite a bit of adjustment in chainline. It also made lots of room for the Cyclo 2- and 3-speed conversions. I once made a 6-speed with a S-A hub, two sprockets, and a Shimano DX two-speed BMX derailleur. Sheer nuttiness, but it worked. If you have a Sachs/SRAM DualDrive hub, these won't work. However, these are easier to customize since they accept standard Shimano- splined cassettes (mostly). If you still want to explore gearhead insanity, I can recall reading stories of early mountain bikers using JB-Weld and pins to attach wide- range freewheels (this was almost pre-cassette) to the Sturmey-Archer driver. It took a little doing to get the alignment right, but it worked! At least... until the Sturmey hub exploded on the climb. That's funny. Gotta love JB-Weld. Just two of the fixes in our shack: Sliding shower door corner joints exploded. Running perfectly ten years after the JB-Weld experience. Six inch circular two sided mirror in rotating plastic gimbal. Dropped; plastic mount breaks. Looking good and working perfectly after the JB-Weld experience. -- Michael Press Any idea on the JB Weld tensile strength? -- meb |
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