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  1. #126
    mtbr member
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    Quote Originally Posted by Mr.Magura View Post
    Yeah that's right, I seem to recall these going south the hard way too.

    Funny though, cause when I look at it, it seems to be made well, and the engineering behind seems sound enough as well.

    It could be interesting to make FEA on it, just to see what exactly went wrong.



    Magura
    Where did these usually break?
    WTB: Ritchey Plexus
    DiNotte 200 lights

    automobiliana.blogspot.se

  2. #127
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    More Lost Parts

    Paired once again,

    A Vintage Parts Fab-img_5747.jpg

  3. #128
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    absolutely love this stuff....double century: did you work with cc at any time?

  4. #129
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    I visited him in person for the first time last year, and we exchanged some ideas and shared many similar interests.

  5. #130
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    i'm guessing this isnt just a hobby for you? i'm intrigued! i'd love to make/modify components that looked even half as sano as yours...and as charlie i think knows, i've long had massive respect for his work too...

  6. #131
    gobsmacked Moderator
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    Picnics, long walks on the beach...
    Wanted: WTB rollercams and brake bridges

  7. #132
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    Quote Originally Posted by erol/frost View Post
    Where did these usually break?
    There is a lot of flex in the horizontal sections that make up the extension part of the stem.

    I made this one back in 1995. It held up just fine, but I could feel a lot of twisting flex when I cranked on the bars. And that was back when I weighed in at 145 lbs. I always intended to redesign it with the cross supports connecting to each other as triangles. I still haven't gotten around to it.


  8. #133
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    Kind of hard to beat a tubular stem design.

    dRjOn, this is all just a hobby if you want to call it that.

  9. #134
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    Nice...I'm jealous

  10. #135
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    excellent ,i love all this stuff , if i get 10 posts i''ll stick some pics up of my machined stuff

  11. #136
    Hit The Road Cyclery
    Reputation: -Anomie-'s Avatar
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    Super jealous of your shop :P especially now that I have the room for the tools. Oh well, I bought myself a drill press yesterday, gotta start somewhere.

  12. #137
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    In 1989 I made cantilever brakes with only a drill press, hacksaw, and files. So yeah, go for it!

  13. #138
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    replacement suspenders crown

    super vee rear disc mount

    mc tech inspired crank (w.i.p.)

    mc tech inspired stem

  14. #139
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    100% handmade





  15. #140
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    Quote Originally Posted by Levi Strauss View Post
    100% handmade




    Wow. Pretty cool and without all the expensive machinery! Lots of time invested there I'm sure.

  16. #141
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    yes lots of time ...
    the linkage was an old white industries crank

  17. #142
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    cool old school machining there
    but was it done on a treadle lathe/drill ?

  18. #143
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    for the first step i use a drill press (?) . can see this on pic #1

  19. #144
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    Excellent work Levi, especially that handmade brake. It looks vaguely familiar.

  20. #145
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    Interesting bike and shop....

    You'd be a while waiting for me to figure out how to do this....nice shop.
    http://www.sciencefriday.com/embed/video/10400.swf

  21. #146
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    Cool!

    Super nice shop too.

  22. #147
    TrinityRiverKerplunk
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    Steel cleats

    Well, I can't hold water up to these awesome CNC guys here, but my latest cycling dilemma has revolved around the lack of cleats for old style clip and strap combo.

    So I ended up cutting the parts out of steel and brazing them up. Then the fun began, where I had to file the slot necessary for the pedal cage, that took quite awhile.

    The one on the right was a proto, the one on the left is my third generation version.
    Attached Thumbnails Attached Thumbnails A Vintage Parts Fab-3rdgenerationcleat.jpg  

    Good friction shifting is getting hard to find nowadays....

  23. #148
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    Quote Originally Posted by unicrown junkie View Post
    Well, I can't hold water up to these awesome CNC guys here, but my latest cycling dilemma has revolved around the lack of cleats for old style clip and strap combo.

    So I ended up cutting the parts out of steel and brazing them up. Then the fun began, where I had to file the slot necessary for the pedal cage, that took quite awhile.

    The one on the right was a proto, the one on the left is my third generation version.
    Very cool. I think most riders these days don't even know how a toe strap is designed to work, let alone cleats.

  24. #149
    Mtn Biker Machinist
    Reputation: 1 cog frog's Avatar
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    Another project

    I actually finished this a while ago, but the McMahon thread reminded me of it. This is an adapter I made to run ISO 6 bolt rotors on older White Industries/Rock Shox hubs. I had to make a few prototypes from butterboard to get the fit just right, but in the end they turned out pretty well.

    I have yet to build a wheel with the hub, but I tried it in a frame running discs, and things lined up fine.

    frog
    Attached Thumbnails Attached Thumbnails A Vintage Parts Fab-100_0534-small.jpg  

    A Vintage Parts Fab-100_0535-small.jpg  

    A Vintage Parts Fab-100_0536-small.jpg  

    A Vintage Parts Fab-100_0537-small.jpg  


  25. #150
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    Interesting. I could have sworn that I once saw a 6 bolt rotor on a RS hub owned by Mike of Black Mountain Cycles, but I've never looked into it myself. It is good to know that it can be done, otherwise my wheelset is worthless to me now.

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