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  1. #1
    MichelleMachete MichelleMachete's Avatar
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    Obsolete French Threads

    So I've answered this to my self may of times, which is no, but its worth a try:

    Is there an alternative bottom bracket for my old skoo Peugeot besides the Phil Wood BB cups. I was thinking of re tapping the threads to maybe an Italian threading, you know something more accessable will that work or will I destroy a frame?

    Cheers,
    Michelle

  2. #2
    Senior Member miamijim's Avatar
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    http://cyclespeugeot.com/Threading.html

    Edco BB's are available in French threading although I'm not sure of availablity and spindle length.

    http://www.velo-orange.com/edbobr.html
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  3. #3
    Senior Member Grand Bois's Avatar
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    I've got a set of French Sugino cups you can have. You will have to use your old lockring. I'd tell you to come and pick it up, but yor name scares me.

  4. #4
    MichelleMachete MichelleMachete's Avatar
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    I'll leave my machete at home, JK. No thanks I have spares, is there any way to alter the BB shell so I can install a sealed cartridge BB.

  5. #5
    crotchety young dude el twe's Avatar
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    If you can find an old Shimano UN-73 (I think) cartridge BBs (the one with two removable cups), the Phil cups should work. On that note, does anyone know if the Miche BB will work with Phil cups?
    Quote Originally Posted by CardiacKid View Post
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  6. #6
    Senior Member Grand Bois's Avatar
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    I've heard of force fitting a British threaded cartridge bottom bracket, but I'm not going to try it on my PX10! Actually, it probably won't hurt the shell because it's steel and the BB is aluminum. It's just not the right way to do things.

    I think I'm going to try an Edco from Velo Orange since I want to use a NR triple on my Peugeot. The 120mm spindle should be about right and the Edco makes the chainline adjustable to some extent.

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    Senior Member Grand Bois's Avatar
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    Quote Originally Posted by el twe View Post
    If you can find an old Shimano UN-73 (I think) cartridge BBs (the one with two removable cups), the Phil cups should work. On that note, does anyone know if the Miche BB will work with Phil cups?
    I know for a fact that it won't work. I tried it. The diameter of the Miche bb is too large. A machinist might be able to solve that problem, but they don't work cheap.

  8. #8
    MichelleMachete MichelleMachete's Avatar
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    The Edco from Velo Orange is tempting but I need a narrow spindle. 120mm is just too long for what I'm trying to do. (not converting it into a fixie or a single speed)

  9. #9
    Senior Member Grand Bois's Avatar
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    I'm not convinced that a cartridge bottom bracket is a big improvement and I'm afraid that there won't be replacements for square taper cartridge bottom brackets available a few years down the road. I'm only willing to try the Edco because I can't find the spindle I need. I've got a couple of new NR thickwall cupsets, but Campy never made a spindle for a Record triple and thickwall cups.

  10. #10
    Stop reading my posts! unworthy1's Avatar
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    Quote Originally Posted by MichelleMachete View Post
    I'll leave my machete at home, JK. No thanks I have spares, is there any way to alter the BB shell so I can install a sealed cartridge BB.
    Since we're just hashing things up: I'd bet you could install 2 BSC (both RH thread) *adjustable* side cups in your FR BB with only minor swearing and no machine shop visit required. You WOULD need one of the Shimano units with both removable cups and 2 of the *alloy* cups would be best (avoid the plastic cups) since you would be doing some forced minor deformation of the threads. This would allow you to select whatever size spindles Shimano made of those UN-73s(?), and then you can fit a modern-ish JIS crank as well...otherwise it's a lot of fussing and cobbling if you have good FR cups and a crank/spindle that fits, already.

  11. #11
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    In the latest issue of Bicycle Quarterly, Jan Heine describes how to install sealed bearings in a British- or French-threaded b/b. Takes some bit of machining, but you get larger bearings and ready renewability.

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    I think you need a UN-71 or 72 to do the Phil Wood cup trick. Also, some Tange cartridge BBs have removable cups and may be worth a look.

    I wish all cartridge BB makers would publish how much R/L spindle offset each size had, to make fitting easier.

  13. #13
    feros ferio John E's Avatar
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    Quote Originally Posted by Dirtdrop View Post
    I've heard of force fitting a British threaded cartridge bottom bracket ...
    That works only with a Swiss-threaded bottom bracket, unless you can cross-thread a LH 24TPI cup into a RH 1mm BB shell. (The dual RH thread cup approach outlined above should work, as well.) If you use aluminum cups, there is virtually no danger of damaging your steel BB shell. For almost 10 years my PKN-10 has had an English-threaded Sugino fixed cup and a French-threaded adjustable cup.
    "Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
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  14. #14
    can't member Noah Scape's Avatar
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    What ever happened with those YST bottom brackets. When I googled them I found that Harris dropped them because of inconsistent quality. Are they still around?


  15. #15
    Old Skeptic stronglight's Avatar
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    Quote Originally Posted by MichelleMachete View Post
    So I've answered this to my self may of times, which is no, but its worth a try:

    Is there an alternative bottom bracket for my old skoo Peugeot besides the Phil Wood BB cups. I was thinking of re tapping the threads to maybe an Italian threading, you know something more accessable will that work or will I destroy a frame?

    Cheers,
    Michelle
    Yes, you CAN re thread the BB. We've done this (re-tapped for an Italian BB) and it will works out nicely - so long as the BB shell is thick enough so you are not shaving the shell down to the thickness of a tin can. With better quality bikes the shells always seem to be thicker. With some of the low-end bikes they may have used thinner welded sheet steel to form the BB, so look for a seam or weld line.

    The real advantage to doing so would be to use a more modern style of crankset. Otherwise, If you plan to keep a square tapered crankset, and if the cups are still in decent condition, I wouldn't bother. You can still find replacement spindles in N.O.S. condition for a reasonable price on eBay, and with a change of ball bearings (higher grade preferred) the bike should run just fine for a very long time.

    Curious... what were your ultimate intentions for making the BB change?

  16. #16
    slow as I ever was Ex Pres's Avatar
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    One additional thing on my retapped BB (from your mech forum thread). When I went from the cup/cone that was in the retapped shell to a sealed unit I had to do some additional grinding in the shell, in the area between the threaded ends, to get the sealed unit (a Campy Chorus) to drop in correctly.
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  17. #17
    Senior Member miamijim's Avatar
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    Quote Originally Posted by Noah Scape View Post
    What ever happened with those YST bottom brackets. When I googled them I found that Harris dropped them because of inconsistent quality. Are they still around?

    Plenty of those on Ebay.....
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  18. #18
    Senior Member Grand Bois's Avatar
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    Those YST bottom brackets require chamfering of the bottom bracket shell like the old Mavic units. You have to find a shop that has the tool and someone that knows how to use it. It won't be cheap and you'll end up with a POS bottom bracket. Phil Wood probably won't cost much more and you'll have a lifetime bottom bracket.

  19. #19
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    Quote Originally Posted by el twe View Post
    If you can find an old Shimano UN-73 (I think) cartridge BBs (the one with two removable cups), the Phil cups should work. On that note, does anyone know if the Miche BB will work with Phil cups?
    I used a UN-72 with Phil cups on an old Raleigh.
    One thing about living in Santa Carla I never could stomach -- all the damn vampires.

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