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  1. #1
    Beer and nachos today!
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    Questions about Sturmey-Archer FG 4-sp dynohub

    Originally posted in the Mechanics forum, but no one is biting.

    I really like the idea of commuting on a bike using a hub like this:

    http://cgi.ebay.ca/Vintage-Sturmey-A...QQcmdZViewItem

    but I don't have any experience with internal-gear hubs. If it needs repairs later on, are parts available? Are FG hubs as reliable as AW's? How long-lived are they? (This one dates from 1960). What shifter do I use, and is it hard to come by? Do FG hubs have any quirks I need to know about?

    Those are the big questions for now... if anyone has any information to share, I'd really appreciate it

  2. #2
    Scott n4zou's Avatar
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    Stay away from that thing. All it's suitable for is a display in a bicycle museum. Old SA dynamo hubs used magnets housed in steel poles. If you try to take it apart for service the magnets will lose what little magnetism they have remaining after so many years. If you want a dynamo hub for your commuter go ahead and spend the money for a quality new dynamo hub.
    [SIGPIC]http://www.bikeforums.net/image.php?type=sigpic&userid=57360&dateline=1197386754[/SIGPIC]
    It's easier to pick a Yankee tourist than a bail of cotton.

  3. #3
    Senior Member wahoonc's Avatar
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    Depends on what you plan for it. I have commuted on the old AW hub for thousands of miles and put thousands on the front dyno hub. Both still work fine. FWIW I have two of the combo hubs, an FG and an AG. The FG is getting built up in 700c wheel to go on my "club racer" build up. The AG is going with a 26x1-3/8" Weinman alloy rim to get put on my beater Raleigh Sports.

    Both are dependable hubs IMHO. Parts can be an issue, but are available if you search. You will need an early model 3/4 speed trigger shifter for the FG. They are out there.

    If you are looking for the best available technology, get a Nexus set up (to the best of my knowledge they don't make a combo hub), it will cost more, but it will be brand new and there have been improvements in the generator department as well as the internal geared hubs. Sturmey Archer does still make generator hubs and internal geared hubs, but not in the combination units. Availability in the US is sporadic in my searches. YMMV

    Also the dynohub can be serviced, just don't separate the magnets from the ring. I have torn them down many times. Here is a LINK to a set of service manuals for the various hubs.

    Aaron
    Last edited by wahoonc; 12-16-07 at 10:30 AM.
    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

  4. #4
    Senior Member jimisnowhere's Avatar
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    Can you find 40 hole rims anymore?
    I can ride the solarcycle with no hands.

  5. #5
    Senior Member wahoonc's Avatar
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    Quote Originally Posted by jimisnowhere View Post
    Can you find 40 hole rims anymore?
    Yep the Sun CR-18's are back in stock in a 26x1-3/8" and there are several if you use the 700c wheels.

    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

  6. #6
    Beer and nachos today!
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    Thanks, wahoonc! It turns out shipping would have been in the neighbourhood of $80 anyway, so I think I might as well stick with new parts after all.

  7. #7
    Senior Member wahoonc's Avatar
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    Quote Originally Posted by illdoittomorrow View Post
    Thanks, wahoonc! It turns out shipping would have been in the neighbourhood of $80 anyway, so I think I might as well stick with new parts after all.
    That is one of the disadvantages of buying things from England via FleaBay. I have an inside track...my son is a grad student at Leeds University in Leeds, England So I buy a few things and have them shipped to his apartment, then when he makes his trip home he has a suitcase half filled with dad's crap Best one so far is the 16" wheel with Dyno hub that is making it's way home this week....wonder what he tells Customs

    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

  8. #8
    Senior Member
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    Quote Originally Posted by jimisnowhere View Post
    Can you find 40 hole rims anymore?
    I hope so, as I just ordered one along with the matching 32 holer. I also inquired about shipping on that hub. Puts it out of my price range for sure. Now if someone just had to have it to complete a restoration I guess it would be worth it.

  9. #9
    Formerly Known as Newbie Juha's Avatar
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    Quote Originally Posted by wahoonc View Post
    If you are looking for the best available technology, get a Nexus set up (to the best of my knowledge they don't make a combo hub), it will cost more, but it will be brand new and there have been improvements in the generator department as well as the internal geared hubs.
    I respectfully disagree. If you want the top notch technology with no expense spared, you should go with a SON dynohub and a Rohloff rear hub. The SON will have less drag than a Nexus, the Rohloff will have better gear range. Rohloff also has more gears, which may be a plus for some. In addition they're both probably more durable than any Nexus, but I don't know if any thorough comparison has been made in that respect.

    The SON-Rohloff setup will cost you a couple of limbs compared to Nexii though.

    --J
    To err is human. To moo is bovine.

    Who is this General Failure anyway, and why is he reading my drive?


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  10. #10
    Senior Member wahoonc's Avatar
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    Quote Originally Posted by Juha View Post
    I respectfully disagree. If you want the top notch technology with no expense spared, you should go with a SON dynohub and a Rohloff rear hub. The SON will have less drag than a Nexus, the Rohloff will have better gear range. Rohloff also has more gears, which may be a plus for some. In addition they're both probably more durable than any Nexus, but I don't know if any thorough comparison has been made in that respect.

    The SON-Rohloff setup will cost you a couple of limbs compared to Nexii though.

    --J
    Poor choice of words on my part I should have said "best valued tecnology" No argument from me that the SON and the Rohloff are state of the art and top notch.

    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

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