Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Senior Member
    Join Date
    Jul 2006
    Posts
    425
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Sturmey Archer dynohub bearing parts

    I'm looking for the cones for an old (actually several old) Sturmey Archer dynohub(s). I've got a total of three hubs, and all of them need new cones. The hub I'm currently rebuilding has been in use for several years, and I'm rebuilding it before things get really bad. Currently the cups are in acceptable condition, but one of the cones has a bad spot. I've got two other hubs that are currently sitting around, in need of cones as well.

    Does Wheels Manufacturing have cones that will work with S-A hubs? Are S-A parts available anymore (aside from ebay)? The hub in question is from 1974, the others are even older.

    I know I'm working with a dinosaur, but the hub has been working great with my homebuild LED headlight. I'm a budget biker, so I'm not yet ready to spend the $$$ on a Nexus or a Schmidt. I like to keep my stuff going, so I'm looking for parts. Plus, the hub is already built up in a wheel, so the easiest thing for me to do is get new cones and keep on rolling.

    Edit: should I post this in the vintage category?

  2. #2
    Bicycling Gnome
    Join Date
    Apr 2006
    Location
    55.0N 1.59W
    Posts
    1,877
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can buy parts here, but this dealer is in the UK.

    http://oldbiketrader.co.uk/display_S...ternalhubparts

    Harris Cyclery may help you if you live in the States.

    http://sheldonbrown.com/harris/sturm...her-parts.html

    Alternateively, the new SA srf-3 hub is very cheap. I can buy a one ready built into a wheel for my folder at £45 delivered to my door. The hub is as good as any of the older ones - but is not a dyno hub, so not much use to you perhaps.

  3. #3
    Senior Member Grand Bois's Avatar
    Join Date
    Mar 2005
    Location
    Pinole, CA, USA
    Posts
    15,098
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    I'd try Persons-Majestic Company. They were the U.S. distibutor for Sturmey-Archer. They're still selling left over hubs, so maybe they have left over Dynohub parts. It's worth a shot.

    http://www.permaco.com/index.html?ta...tml&lang=en-us

  4. #4
    Cyclotouriste
    Join Date
    Aug 2007
    Location
    Santa Barbara, California
    Posts
    33
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Why is it the Sturmey Archer Dynohub magnets will lose their magnetism when you take apart the hub? I mean, I accept that it happens - if St. Sheldon says it, it must be true - but aren't they permanent magnets?

    Just curious -

    Mark McClure

  5. #5
    Bicycling Gnome
    Join Date
    Apr 2006
    Location
    55.0N 1.59W
    Posts
    1,877
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't know but they NEED a keeper or they lose 90% of their effectiveness at once. Apparently, lots of old ones have already been mistreated by ham fisted people who 'fixed' them.
    “Get a bicycle. You will not regret it, if you live." - Mark Twain

  6. #6
    Cyclotouriste
    Join Date
    Aug 2007
    Location
    Santa Barbara, California
    Posts
    33
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Magnets

    I know the General Knowledge suggests that Dynohub magnets instantly lose much of their strength if not in constant contact with the armature. Both Sheldon Brown and Jobst Brandt have written about this. (Jobst even built a re-magnetizer that apparently didn't work very well.)

    However, the little horseshoe magnet knocking around in my desk drawer has kept its magnetism for years without a keeper. Surely a few minutes of Dynohub overhauling wouldn't cause more than a tiny loss.

    Certainly they're not exotic modern magnets with unusual properties; my hub was made in 1966 and I think all they had were soft iron magnets.

    I guess I'm setting myself up for an experiment, but I'd be interested to hear other ideas before I start learning about gaussmeters.

    Mark McClure

  7. #7
    Senior Member
    Join Date
    Jul 2003
    Location
    Brooklyn, NY
    Posts
    1,453
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can get cones here, but it means ordering from the UK:

    http://www.sjscycles.co.uk/product-S...-Each-5603.htm
    Internal Gear Hub Guru
    Currently owned hubs: Sachs Pentasport, SRAM P5 Drum, Sturmey SRF5-W , Sturmey XRD3
    Previously owned hubs: Shimano Nexus 8 speed, Sturmey AW 3 speed, Shimano 3 speed coaster, SRAM S7 Drum, Sturmey XRF8 8 speed
    Tested hubs: SRAM i-Motion 9 speed, Sturmey XRD5

  8. #8
    Senior Member
    Join Date
    Jun 2005
    Location
    Angus, Scotland
    My Bikes
    Many
    Posts
    387
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I was overhauling a 3 speed hub this week.

    It had broken pawl springs and worn bearings under the driver.

    So I took Pawls from an old unit.

    And got my Plastic box of bearings and selected and fitted the bearings in the hub.

    But my bearings box has dissapeared now....been looking for it for ages.
    Hate when I loose things..but this isnt a little grey part. Its an old ice cream tub..white and about a foot square.
    Oh well it'll turn up eventually

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •