SSDD
02-14-07, 02:51 PM
Hi !
I have a 3 speed SA hub and I wonder if its possible to use two cogs on a SA 3 speed hub ?
Thanks
I have a 3 speed SA hub and I wonder if its possible to use two cogs on a SA 3 speed hub ?
Thanks
Folding Bikes - Sturmey Archer cog configuration
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.View Full Version : Sturmey Archer cog configuration
rhenning
02-14-07, 03:08 PM
I have. It works if you remove the spacers and run one sprocket offset to the inside and one offset to the outside. Bigger sprocket on the inside. Roger
wahoonc
02-14-07, 03:08 PM
Hi !
I have a 3 speed SA hub and I wonder if its possible to use two cogs on a SA 3 speed hub ?
Thanks
At the same time? or are you asking if they can be changed? If you are wanting to run multiple sprockets at the same time, the only way I know to do it is with a Cyclo Conversion Sprocket (http://sheldonbrown.com/harris/sturmey-archer-parts.html) (look about half way down the page) If you are looking to swap sprockets out it is very easy, the hardest part being if you need to shorten or lengthen the chain.
Aaron:)
I have a 3 speed SA hub and I wonder if its possible to use two cogs on a SA 3 speed hub ?
Thanks
At the same time? or are you asking if they can be changed? If you are wanting to run multiple sprockets at the same time, the only way I know to do it is with a Cyclo Conversion Sprocket (http://sheldonbrown.com/harris/sturmey-archer-parts.html) (look about half way down the page) If you are looking to swap sprockets out it is very easy, the hardest part being if you need to shorten or lengthen the chain.
Aaron:)
invisiblehand
02-14-07, 03:33 PM
Hi !
I have a 3 speed SA hub and I wonder if its possible to use two cogs on a SA 3 speed hub ?
Thanks
Isn't that how the 6-speed Brompton is achieved?
I have a 3 speed SA hub and I wonder if its possible to use two cogs on a SA 3 speed hub ?
Thanks
Isn't that how the 6-speed Brompton is achieved?
MnHPVA Guy
02-14-07, 05:05 PM
Isn't that how the 6-speed Brompton is achieved?
In the old days you had two 1/16" spacers and a 1/8" cog. 22/19 is a mathematically perfect 1/2 step on an AW and nice sizes for 26" wheels. Cogs under 16t weren't dished, so small wheel options were limited
But the newer hbs have only about 0.150" between the dust cover and the snap ring. Brompton must use special, thinner cogs to make it work.
In the old days you had two 1/16" spacers and a 1/8" cog. 22/19 is a mathematically perfect 1/2 step on an AW and nice sizes for 26" wheels. Cogs under 16t weren't dished, so small wheel options were limited
But the newer hbs have only about 0.150" between the dust cover and the snap ring. Brompton must use special, thinner cogs to make it work.
cyqlist
02-14-07, 07:22 PM
I used to use a modified Shimano freehub cog on the inside and the dished SA sprocket on the outside.
You could theoretically fit three if the inside and outside were dished and the middle one flat. Frank Berto once wrote an article describing how he did that. As I recall he somehow dished the inner (largest) sprocket himself.
You could theoretically fit three if the inside and outside were dished and the middle one flat. Frank Berto once wrote an article describing how he did that. As I recall he somehow dished the inner (largest) sprocket himself.