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  1. The 1984 Peloton OEM tire was the Clement Super...

    The 1984 Peloton OEM tire was the Clement Super Condor tubular (700c x 21.5mm, 270 grams) glued to Araya ADX-1 700c grey hard anodized aero tubular rim.

    Switching to a wider 25c (or 28c if it...
  2. Yep; that works.

    Yep; that works.
  3. You can resize jpg images using Resize2Mail...

    You can resize jpg images using Resize2Mail, a free on-line image resizing utility that's easy to use. For BikeForums, resizing to ~800x600 pixels seems to be a good compromise.
  4. Replies
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    I had no idea there would be such contention when...

    I had no idea there would be such contention when I commented that chrome plated frames and forks without post process baking to relieve hydrogen embrittlement could risk brittleness and fracture. I...
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    The bicycle manufacturers all baked their frames...

    The bicycle manufacturers all baked their frames and forks after plating, so factory chrome plated frames and forks aren't a problem. Aftermarket platers who normally don't plate thin-walled high...
  6. Thread: Tire sizes?

    by Scooper
    Replies
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    998

    Yep; as Sheldon says, "This careless nomenclature...

    Yep; as Sheldon says, "This careless nomenclature still causes confusion, and people often imagine that there is a different '27 inch' size in tubulars as there is in clinchers."
  7. Thread: Tire sizes?

    by Scooper
    Replies
    50
    Views
    998

    As Darwin says, "27 inch tubulars" was a term...

    As Darwin says, "27 inch tubulars" was a term erroneously used by manufacturers (like Schwinn) who should have known better. What they called 27" tubulars are the same 622mm diameter sew-up tires...
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    A 1977 article on the subject for everybody's...

    A 1977 article on the subject for everybody's amusement.

    http://i32.photobucket.com/albums/d7/k4drd/Bicycles/Frame%20Materials/HydrogenEmbrittlementArticle1977_zps213ccc13.jpg
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    Carburizing will harden the steel, but I'm not...

    Carburizing will harden the steel, but I'm not sure how that prevents the hydrogen, in atomic form, from entering and diffusing through the steel alloy surface during the subsequent plating.
    ...
  10. Replies
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    The ASTM standard procedure of performing post...

    The ASTM standard procedure of performing post plating heat treatment of some steels for reducing susceptibility to hydrogen embrittlement or degradation that may arise in the finishing processes is...
  11. Replies
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    Decorative chrome plating on thicker carbon steel...

    Decorative chrome plating on thicker carbon steel probably presents insignificant risk. High strength thin-walled bicycle frame tubing is a different matter.
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    I don't work in the machine industry, but my dad...

    I don't work in the machine industry, but my dad worked for Schwinn for thirty years and Schwinn did lots of chrome plating of bicycle frames and forks made with high strength thin-walled steel...
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    I agree with dddd. A '75 Le Tour without issues...

    I agree with dddd. A '75 Le Tour without issues in a decent market could sell for $200. They're great for college kids to get around on.
    ...
  14. The Tange No. 5 seat tube (1454) is 28.6mm O.D....

    The Tange No. 5 seat tube (1454) is 28.6mm O.D. and has 0.9mm wall thickness, so should take a 26.6mm seatpost (28.6 - 2 x 0.9 = 26.8 - 0.2mm clearance between seat tube I.D. and seatpost O.D. =...
  15. Yep. Not to disparage the Italian masters, but...

    Yep. Not to disparage the Italian masters, but the current crop of really talented American builders make bikes as close to perfection as any.
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    If there are no decals or a serial number on your...

    If there are no decals or a serial number on your frame, it could have been made by anybody. I'm not saying it wasn't made by an established builder, but it is certainly possible it was made by an...
  17. Thread: Beautiful Cars

    by Scooper
    Replies
    4,734
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    343,305

    I love the 914-6 GT.

    I love the 914-6 GT.
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    We're on our third golden retriever, Jason, who's...

    We're on our third golden retriever, Jason, who's almost five. They're smart, friendly, totally non-aggresive, and anxious as hell to please. They love to cuddle.

    The downside is they keep the...
  19. I'd make one minor modification: I'd cut the top...

    I'd make one minor modification: I'd cut the top tube slots to slope down on both sides so that you have to lift the frame up slightly to get the bike off the wall.

    The way the slots are...
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    I measure all of my bikes, including angles (STA...

    I measure all of my bikes, including angles (STA and HTA), then plug the measurements into BikeCAD. Angles are easily measured to 0.1 with a Wixey WR300 Angle Gauge.
    ...
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    Yes.

    Yes.
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    I would think the manufacturing is done in Taiwan...

    I would think the manufacturing is done in Taiwan or mainland China. Both the patented SmartWeld technique resulting in significantly less time to clean up and dress the welds and the cheaper Asian...
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    When I think of mass manufacturing, regardless of...

    When I think of mass manufacturing, regardless of where it's done, I think of lower costs whether the savings are from cheap labor or fewer labor hours per frame due to more efficient processes.
    ...
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    This chart will get you in the ball park. Over...

    This chart will get you in the ball park. Over the past couple of decades, there has been a trend to ride smaller frames because they are lighter and stiffer (shorter tubes), and that's fine for the...
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    Comments in the link Curtis provided: ...

    Comments in the link Curtis provided:





    I guess I'll wait for the English version.

    Congratulations on making the centerfold, Curtis!
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