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  1. Posts for centrepulls are shorter (10mm) that...

    Posts for centrepulls are shorter (10mm) that those for cantis, but the OD is the same. Like was said the spacing is more critical with centrepulls than for cantis.
  2. Thread: Mass Manufacturing

    by tuz
    Replies
    32
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    1,197

    Procycle in Canada used to manufacture bicycles....

    Procycle in Canada used to manufacture bicycles. Cheap ones (CCM) and slightly better ones (Peugeot). I don't think they are produced here anymore.

    Here is a vid of their production facility....
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    If I remember right the fit was tight enough that...

    If I remember right the fit was tight enough that a bit of sanding made it fine.

    My bending form (wood) is grooved at a 1/2" dia. My friend has the Hammill (I think) with the v-groove.
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    522

    I never bothered to measure crown sockets or...

    I never bothered to measure crown sockets or blades. I usually squish the blades slightly in the required axis (with some back and forth) until it fits.

    The trail won't change if you take the...
  5. I also use the tapered rolls on a dremel at low...

    I also use the tapered rolls on a dremel at low speed. Filing is difficult... and harder to describe. Basically the file moves mostly parallel to the tubes but with a slight forward motion, from one...
  6. All I can say is that the serrated lugs remind me...

    All I can say is that the serrated lugs remind me of Columbine lugs. Not quite as ornate though.
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    I'm reviving this old thread since I was faced...

    I'm reviving this old thread since I was faced with a similar issue. The plastic cap on the shifter indicated some SIS/friction toggle but it wasn't obvious how to change the mode. Seeing post #4 I...
  8. Replies
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    999

    My first bender was that Imperial AS triple...

    My first bender was that Imperial AS triple bender. Not strong enough for 3/8x0.035 cromo... It broke.
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    999

    I have the 300 series Ridgids. Pretty cheap on...

    I have the 300 series Ridgids. Pretty cheap on eBay and they do the job. I didn't know they were susceptible to breaking. Mine have help up fine on 0.035 wall cromo.
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    659

    Terraferma cycles?

    Terraferma cycles?
  11. Replies
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    3,531

    I think the Meco can be used with both fuel...

    I think the Meco can be used with both fuel gasses. The tips are slightly different but are basically compatible (the recess reduces the tendency of the propane flame to detach and keeps it closer to...
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    Some factories did it I think. Not really a...

    Some factories did it I think. Not really a hearth, but the frame was fixtured on a jig that had multiple torches blasting each joint. Some preform was inserted to make an internal fillet. I think...
  13. Replies
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    True. With oxy, you can generate the same amount...

    True. With oxy, you can generate the same amount of heat with a much smaller tip. Heats a smaller area quickly and efficiently.

    And yes the hearth brazers used a HUGE flame from a 1" (or...
  14. Replies
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    3,531

    I got started on a mapp torch. I made a bunch of...

    I got started on a mapp torch. I made a bunch of racks and it works well for that. It'll work for braze-ons. And people make it work for frames too. I'm tempted to build a lugged brass frame using a...
  15. Replies
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    3,531

    The oxy-map kits will work for a few braze-ons...

    The oxy-map kits will work for a few braze-ons but you'll exhaust the oxygen quickly, meaning you'll have to buy more.

    If you really want to build frames, it'll cost... Unfortunately...
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    493

    You could have indented the stays then, and you...

    You could have indented the stays then, and you could indent them now. Here are some illustrations from A. Wetmore. Can't guarantee that it won't scar the paint...

    Alex Wetmore is always busy with...
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    729

    I guess you are referring to the 0.6-0.4-0.5 seat...

    I guess you are referring to the 0.6-0.4-0.5 seat tubes (the other round tubes have 0.7 butts as shown in post 8). I did use one on a recent lugged built. It think it's intended for TIG since the...
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    Cutting the lug shape is already a lot of work, I...

    Cutting the lug shape is already a lot of work, I would purchase the blanks. If you make your own you have to a) thin the 0.058 tubing on the lathe; b) mitre it; c) weld/braze; d) clean the...
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    I don't think it's a good idea. Making a frame is...

    I don't think it's a good idea. Making a frame is a bit more involved than welding tubes together. And some welds are quite tricky (e.g. seatstay to seat tube). As you mention a welder will have no...
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    Yes the "HOXPLATxx" tubes seems to generally be...

    Yes the "HOXPLATxx" tubes seems to generally be round with sizable butts.
  21. Thanks. Yes I'll have to drill though the post......

    Thanks. Yes I'll have to drill though the post... not a big range for saddle heights :) It hasn't been painted yet. It's been done before, I got the idea from J. Heine's Herse which uses a roller...
  22. Routens did it too in the 50's 404706 from...

    Routens did it too in the 50's

    404706

    from Bikeville thoughts: Yellow Jo Routens Touring/Camping bicycle

    I like the idea routing the cable like that, it goes in straight line which should...
  23. Thanks for showing the pics. The ovalisation...

    Thanks for showing the pics. The ovalisation looks great. I'm curious to hear what happened with the butted tubing. Cool project.
  24. I think that 531 can't be welded?

    I think that 531 can't be welded?
  25. Replies
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    Yes as Andy says a 395 mm is about 30 mm too tall...

    Yes as Andy says a 395 mm is about 30 mm too tall for the intended wheel. Your fork is intended for a 700c wheel and big tires. I would not use it for this build.

    The problem with short headtubes...
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