Shimano Alfine 11-speed SG-S700, SG-S705, SG-S7001-11, SG-S7051-11 135mm Rear hub
| Hub Data | ||
|---|---|---|
| Manufacturer | Shimano | |
| Model | Alfine 11-speed SG-S700, SG-S705, SG-S7001-11, SG-S7051-11 | |
| Descriptor | ||
| Position | Rear | |
| Axle Type | 3/8" (9.5mm) | |
| OLN | 135 mm | |
| Spoke Interface Type | J-Bend | |
| Brake Compatibility | disc, Centerlock | |
| Drive Interface | single cog driver | |
| Internal Gearing | 11 speed | |
| Dynamo Type | none | |
| Spoke Hole Diameter | 2.9 mm | |
| Left Flange Diameter | 93 mm | |
| Right Flange Diameter | 93 mm | |
| Left Flange Offset | 29.5 mm | |
| Right Flange Offset | 24 mm | |
| Mid-Flange Offset | -2.8 mm (to the left) | |
| Weight | 1600 g | |
| URL | https://www.sheldonbrown.com/alfine-11.html | |
| Metadata | ||
|---|---|---|
| Hub ID | 190 | |
| Record Status | Public | |
| Created | Mar 19, 2010 2:59pm | |
PLEASE NOTE: Shimano publishes hub dimensions in a relatively confusing manner on bike.shimano.com. They seem to provide the outside-to-outside flange spacing, and an overall offset of the flanges as a whole. Wheelbuilders are interested in the distance from the midpoint between locknut faces to the middle of the flange (not the inside or outside face). When necessary, I convert Shimano's data into useful spoke calculation dimensions with some simple arithmetic, and factor in 3mm thick hub flanges (an approximation). The formula is to divide spacing by two, add or subtract the overall offset, then subtract half of our assumed 3mm flange thickness. Please check the notes to see if the values for this part are derived from Shimano's published data or actual measurements of a hub specimen. -Karl
11 near-evenly-spaced gear ratios cover a range of 409%.
This model was released fall of 2010 and was anticipated to be a "Rohloff killer", but has developed a reputation of being sensitive to shift adjustment and not as buttetproof as hoped. The internal workings are very similar in design to the popular 8-speed Nexus/Alfine hubs. Notable changes are that the hub is lubricated by an oil bath (similar to Rohloff) and that one planetary stage uses helical-cut gears. Read Sheldon Brown's page (linked) for a good breakdown of how the hub works and details on shortcomings. These hubs are inherently very sensitive to shift cable adjustment due to a significantly shorter amount of cable pull per gear shift. Sheldon's article points out that the cut of the gear teeth seems to have accidentally been cut backwards of what makes the most sense, placing significant axial loads on a clip rather than a machined shoulder. His takeaway is that the 8-speed hubs would likely be a better recommendation if the overall range will suffice. -Karl
----------------------
1/20/11
All dimensions measured by Karl. (weight is still as quoted on spec sheet, spoke hole dia could use more accurate measurement)
Another fabulous resource:
https://bikeshed.johnhoogstrate.nl/bicycle/drivetrain/shimano_alfine_inter_11/
7/14/22 -- Verified dims including 2.9mm spoke hole diameter on a used specimen while rebuilding a wheel for KG. -Karl
This model was released fall of 2010 and was anticipated to be a "Rohloff killer", but has developed a reputation of being sensitive to shift adjustment and not as buttetproof as hoped. The internal workings are very similar in design to the popular 8-speed Nexus/Alfine hubs. Notable changes are that the hub is lubricated by an oil bath (similar to Rohloff) and that one planetary stage uses helical-cut gears. Read Sheldon Brown's page (linked) for a good breakdown of how the hub works and details on shortcomings. These hubs are inherently very sensitive to shift cable adjustment due to a significantly shorter amount of cable pull per gear shift. Sheldon's article points out that the cut of the gear teeth seems to have accidentally been cut backwards of what makes the most sense, placing significant axial loads on a clip rather than a machined shoulder. His takeaway is that the 8-speed hubs would likely be a better recommendation if the overall range will suffice. -Karl
----------------------
1/20/11
All dimensions measured by Karl. (weight is still as quoted on spec sheet, spoke hole dia could use more accurate measurement)
Another fabulous resource:
https://bikeshed.johnhoogstrate.nl/bicycle/drivetrain/shimano_alfine_inter_11/
7/14/22 -- Verified dims including 2.9mm spoke hole diameter on a used specimen while rebuilding a wheel for KG. -Karl