Internal hub vs. external drive train
04-24-08, 05:23 PM
#51
Membership Not Required
Join Date: Jan 2005
Location: On the road-USA
Posts: 16,855
Bikes: Giant Excursion, Raleigh Sports, Raleigh R.S.W. Compact, Motobecane? and about 20 more! OMG
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Likes: 0
Liked 15 Times
in
14 Posts
Aaron
__________________
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
04-24-08, 05:34 PM
#52
Junior Member
Join Date: Mar 2008
Location: Melbourne, Oz
Posts: 24
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I know the idea came from the racerboys and for that reason it's considered suspect by many utility cyclists, but for me--and especially with a full load of groceries in the panniers--maintaining high, steady cadence works best. The only way to do that over varying terrain, shifting winds and changing traffic conditions is with close ratios--and by close I mean 5%-7%.
Even the Rolhoff is 13.6% between gears, or double what works for me. Until that changes, I ride externals.
Even the Rolhoff is 13.6% between gears, or double what works for me. Until that changes, I ride externals.
Actually it doesn't have steps as such, it shifts like a volume control.
Last edited by OlShrimpEyes; 04-24-08 at 05:38 PM. Reason: mistake
04-24-08, 06:03 PM
#53
Junior Member
Join Date: Feb 2008
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I got the hub off ebay, the extra bits I needed from Harris, and built the wheel. By the way, the Sturmey archer is great. The gear range is covers most of the useful range of a bike for me. A lower gear than I have wouldn't be any faster than just walking the bike up the hill, and at the point where I couldn't spin fast enough in the high gear I would be going to fast for comfort anyway.
04-24-08, 06:23 PM
#54
Peace, Love, Bikes
Join Date: Sep 2006
Location: Central Ohio
Posts: 900
Bikes: Schwinn Le Tour III
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Thanks, sounds great.
Since I have an $80 bike from the co-op (pretty nice, actually and a good deal for the money), I love the idea of a 3-4 speed IGH city bike. Just not the idea of putting a brand new $150-250 modern IGH on that frame.
Since I have an $80 bike from the co-op (pretty nice, actually and a good deal for the money), I love the idea of a 3-4 speed IGH city bike. Just not the idea of putting a brand new $150-250 modern IGH on that frame.
04-24-08, 07:18 PM
#55
Membership Not Required
Join Date: Jan 2005
Location: On the road-USA
Posts: 16,855
Bikes: Giant Excursion, Raleigh Sports, Raleigh R.S.W. Compact, Motobecane? and about 20 more! OMG
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Likes: 0
Liked 15 Times
in
14 Posts
Aaron
__________________
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
04-26-08, 03:57 AM
#56
shaken, not stirred.
Join Date: Aug 2006
Location: The Shaky Isles.
Posts: 5,252
Bikes: I've lost count.
Mentioned: 40 Post(s)
Tagged: 1 Thread(s)
Quoted: 1413 Post(s)
Liked 974 Times
in
392 Posts
Anybody tried fitting up a pair of cogs to an internal hub and arranging a derailleur to give the hub a Hi-Lo range? When I was using one of my SA 3 speed wheels for some experimental trials with a bike I kept two different sizes of cog on the hub just so I wouldn't lose the one that I wasn't using. It wasn't until later when I was putting the wheel away that I looked at the two cogs and had one of those 'Hey, what the......' moments.
I'm also sure that the late Sheldon Brown did something like this. Forum member Sixty Fiver has recently made up a Hi-Lo conversion on an AW for a Phillips Twenty he has set up as a grocery bike.
BTW Sram, formerly Sachs, do a similar hub called the dual drive (or 3x7). It is a wide ratio three speed internally geared hub that instead of a single cog, has a 7, 8 or 9 speed cassette on it. It is usefull on small wheeled bikes such as folders, and on recumbents where putting a front derailleur can be problematic but you still want a wide range of gears.
__________________
Get a bicycle. You will not regret it if you live. ~Mark Twain, "Taming the Bicycle"
vBulletin: snafu
