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  1. #1
    Junior Member nhawlman's Avatar
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    *** How I fixed my one dollar Antique Dana bike transmission ***

    If you ever find one of these scarce items, my page may be helpful:

    http://www.gardengrapevine.com/Dana3...onRepairs.html

  2. #2
    Junior Member nhawlman's Avatar
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  3. #3
    Junior Member nhawlman's Avatar
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    Double ooops !!!
    Paste two lines together :

    http://www.gardengrapevine.com/
    Dana3speedBikeTransmissionRepairs.html

  4. #4
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    Ah, so you found out what it was! Interesting design, isn't that how automatic geatboxes on cars work?

  5. #5
    Senior Member Flying Merkel's Avatar
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    That looks like a bicycle product designed by someone who didn't ride bikes. What does it weigh?

    Interesting solution to the gear problem. Makes you appreciate derailleurs & sprockets all the more. I want one for my project beach cruiser- thanks for posting.

  6. #6
    Senior Member
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    Quote Originally Posted by Airburst View Post
    Ah, so you found out what it was! Interesting design, isn't that how automatic geatboxes on cars work?
    It's a planetary gear set and, yes, that's how most automotive automatic transmissions work but it's also how IG hubs work too. This is basically an IGH installed in the bottom bracket instead of the rear hub.
    Last edited by HillRider; 05-18-12 at 10:10 AM.

  7. #7
    Senior Member Homebrew01's Avatar
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    Quote Originally Posted by nhawlman View Post
    Double ooops !!!
    Paste two lines together :

    http://www.gardengrapevine.com/Dana3...onRepairs.html
    You are allowed to edit your posts to fix things, like so ^
    Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike

  8. #8
    Senior Member
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    Quote Originally Posted by HillRider View Post
    It's a planetary gear set and, yes, that's how most automotive automatic transmissions work but it's also how IG hubs work too. This is basically an IGH installed in the bottom bracket instead of the rear hub.
    Correct me if I'm wrong, but don't most IGHs feed drive both ways through the planetary gear to get an increase and a reduction? I'm wondering why they didn't try and do that instead, seeing as it would've eliminated two of the three sets of planetary gears (which I'd imagine are damn heavy), but still provided 3 speeds.

  9. #9
    Senior Member
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    Quote Originally Posted by Airburst View Post
    Correct me if I'm wrong, but don't most IGHs feed drive both ways through the planetary gear to get an increase and a reduction? I'm wondering why they didn't try and do that instead, seeing as it would've eliminated two of the three sets of planetary gears (which I'd imagine are damn heavy), but still provided 3 speeds.
    Yes, that's how 3-speed IGHs work.

  10. #10
    bike whisperer Kimmo's Avatar
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    copy/paste links: http://velospace.org/node/36949 http://velospace.org/node/47746 http://velospace.org/node/47747
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    Just... wow.

  11. #11
    Junior Member nhawlman's Avatar
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    Quote Originally Posted by Homebrew01 View Post
    You are allowed to edit your posts to fix things, like so ^
    WOW !!
    I'm really impressed;
    9,813 posts !
    You wrote the Book !

    I'm still reading the PREFACE:
    "Peter Rabbit Eats Fish, Alligators Catch Eels. - Eels Catch Alligators, Fish Eat Raw Potatoes"

  12. #12
    Happy Commuter mountaindave's Avatar
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    I know it's an old thread, but I'd love to see a video of that transition working. My brain hurts just thinking about it.

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