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Old 11-16-16, 05:40 AM
  #51  
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Originally Posted by gugie
Thanks!

TIG welders are expensive, and I like the look of lugs. If you're interested in volume custom frames, TIG is the way to go
I meant it would be handy only for making custom lugs. File the dimes on the lugs and then continue as always... I had a little Miller Econotig once. At the time these were a good affordable welder, but they have since gotten rather expensive. I built a few prototypes in the early 90s but quickly realized building frames for a living was not a good way to survive, at least at that time.
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Old 11-16-16, 12:21 PM
  #52  
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Originally Posted by gugie
Thanks!

TIG welders are expensive, and I like the look of lugs. If you're interested in volume custom frames, TIG is the way to go
I think he means to replace brazing to make the lugs. End result would be the same except TIG is so clean and tight that it would take a lot less time and finger fatigue to smooth out the lug joint.
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Old 11-16-16, 12:29 PM
  #53  
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Note to self: remember to add "don't drillium the steerer tube" in the fork spreadsheet.

One thing I was going to ask, though -- after using brazing to construct a lug, how do you keep it from softening and coming apart when brazing other tubes to it?
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Old 11-16-16, 12:42 PM
  #54  
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Beautiful !
Your shop looks good to hang out and 'bench race'
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Old 11-16-16, 01:03 PM
  #55  
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Originally Posted by TenGrainBread
I think he means to replace brazing to make the lugs. End result would be the same except TIG is so clean and tight that it would take a lot less time and finger fatigue to smooth out the lug joint.
Understood. The initial cost and learning curve to create nice, overlapping dimes using TIG make the ROI pretty long. I'm not doing anything volume, so it doesn't make sense for me to get one unless I just wanted to learn how to TIG. You'd still need to file and sand out the TIG'ed custom lugs, so I'm not sure what the benefit would be. And I like the flowing, large radius curves you can make with brass.
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Old 11-16-16, 01:11 PM
  #56  
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Originally Posted by ThermionicScott
Note to self: remember to add "don't drillium the steerer tube" in the fork spreadsheet.

One thing I was going to ask, though -- after using brazing to construct a lug, how do you keep it from softening and coming apart when brazing other tubes to it?
Hey, you want it light or not?

I use brass (actually bronze, common usage is to call it brass brazing) for the lugs. You can use brass or silver on lugs, but most everyone uses silver, as it flows a lot easier and requires less heat-which is why you can make a brass brazed lug and heat it up to silver brazing temperatures.

A lot of older bikes (think Carlton built Raleighs) were brass brazed, even the lugs - brass filler is a lot cheaper than silver. Low volume custom builders will use silver with lugged frames. The cost of the silver filler is relatively insignificant, and lower temperatures can be used - important with today's high strength alloy tubesets, which lose much more strength if they get too hot.

I put this to use on the pump peg, brass brazed the peg on, then used silver for the "accoutrement".
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Old 11-16-16, 01:23 PM
  #57  
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Really cool.
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Old 11-16-16, 01:23 PM
  #58  
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Originally Posted by trailangel
Beautiful !
Your shop looks good to hang out and 'bench race'
Thanks!

But bench racing has a stigma attached to it: the lack of suffering.

Unless of course you have to suffer through my many stories of days gone by...
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Old 11-16-16, 03:27 PM
  #59  
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Originally Posted by gugie
A lot of older bikes (think Carlton built Raleighs) were brass brazed, even the lugs - brass filler is a lot cheaper than silver.
Not uncommon to see bad (not full)* lug joints on those bikes too.




* there is a proper term for this, but I don't know it.
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Old 11-16-16, 03:49 PM
  #60  
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Originally Posted by ColonelJLloyd
Not uncommon to see bad (not full)* lug joints on those bikes too.




* there is a proper term for this, but I don't know it.
A good lug has full penetration. A bad lug doesn't.

First smart-ass comment to this post in 3, 2, 1...



I'm thinking of building my own media blast cabinet. For some of the jobs I'm doing, it would be nice to remove all of the paint so I can really see the brazing quality. I've touched up one or two old frames I've done work on, not to mention getting out the file and cleaning up some of blobs.
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Old 11-16-16, 03:52 PM
  #61  
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Originally Posted by gugie
full penetration
That's what I was looking for. Thanks.
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Old 11-16-16, 04:19 PM
  #62  
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Originally Posted by gugie
....

First smart-ass comment to this post in 3, 2, 1...
twss.
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Old 11-16-16, 04:29 PM
  #63  
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I'm impressed, that's for sure.
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Old 11-16-16, 04:53 PM
  #64  
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Seems like there should be 3 or 4 other guys standing around with a bottle of beer in their hand, offering various suggestions to improve the build as you are working.

Love the 2 bolt seat lug.
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Old 11-16-16, 05:28 PM
  #65  
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I like it. I love that seat lug
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Old 11-16-16, 05:56 PM
  #66  
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Originally Posted by trailangel
Seems like there should be 3 or 4 other guys standing around with a bottle of beer in their hand, offering various suggestions to improve the build as you are working.

Love the 2 bolt seat lug.
That's what you guys are for.
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Old 11-16-16, 06:33 PM
  #67  
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Originally Posted by trailangel
Seems like there should be 3 or 4 other guys standing around with a bottle of beer in their hand, offering various suggestions to improve the build as you are working......snip
Originally Posted by gugie
That's what you guys are for.
Damn, you mean you can see my usual forum browsing attitude and accompanying adult beverage......

Oh Crap.....

Bench racing is a long accepted and noble part of all two wheeled sports I well remember Dirt Bike Magazine holding the First Annual Great Yellow Dirt Bike Bench Racing Contest, or the GYDBBRC. and the Second First Annual Great Yellow Dirt Bike Bench Racing Contest. So is beer drinking while one guy tries to accomplish something constructive.

Bill
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Old 11-16-16, 06:37 PM
  #68  
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Originally Posted by qcpmsame
Damn, you mean you can see my usual forum browsing attitude and accompanying adult beverage......

Oh Crap.....

Bench racing is a long accepted and noble part of all two wheeled sports I well remember Dirt Bike Magazine holding the First Annual Great Yellow Dirt Bike Bench Racing Contest, or the GYDBBRC. and the Second First Annual Great Yellow Dirt Bike Bench Racing Contest. So is beer drinking while one guy tries to accomplish something constructive.

Bill
Sometimes I'll do something stupid in my shop, and I can clearly hear certain peanut gallery, er, forum members in my head.

BTW, how many bicyclists does it take to fix a flat? One doing all the work, and the rest of 'em telling you how you're doing it all wrong.
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Old 11-16-16, 06:56 PM
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Originally Posted by qcpmsame
So is beer drinking while one guy tries to accomplish something constructive?

Bill
Absolutely! Some of the best designs and engineering has been done on cocktail napkins.
Unfortunately, most are lost and not remembered the next day.
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Old 11-16-16, 07:18 PM
  #70  
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A leap of faith by you and the client. From what I gather you're just getting into this and here you took on the rather unusual. Love it. Crossing fingers the rest turns out and you have a happy Andy whoever.

(Ps. Discounting the hours of planning and discussion, I do have a mild curiosity of all the labor time spent up to the finish grind / sanding.)
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Old 11-16-16, 08:38 PM
  #71  
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Originally Posted by ThermionicScott
Note to self: remember to add "don't drillium the steerer tube" in the fork spreadsheet.

One thing I was going to ask, though -- after using brazing to construct a lug, how do you keep it from softening and coming apart when brazing other tubes to it?
Oh c'mon, all the steerers in the pro peloton are carbon . . .

Seriously, how much stress can the steerer be under? The headset lower race takes all the hits.
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Old 11-16-16, 09:41 PM
  #72  
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Originally Posted by crank_addict
A leap of faith by you and the client. From what I gather you're just getting into this and here you took on the rather unusual. Love it. Crossing fingers the rest turns out and you have a happy Andy whoever.

(Ps. Discounting the hours of planning and discussion, I do have a mild curiosity of all the labor time spent up to the finish grind / sanding.)
Planning was over half of it. Making the miters isn't a significant amount of time. Filing the hellenic seat stays was half a day to get it just right. But, filing and sanding is a big time suck. 20 hours? More?
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Old 11-16-16, 11:16 PM
  #73  
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Originally Posted by cinco
Wow, that's fantastic.
++++
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Old 11-16-16, 11:26 PM
  #74  
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Originally Posted by jyl
Oh c'mon, all the steerers in the pro peloton are carbon . . .

Seriously, how much stress can the steerer be under? The headset lower race takes all the hits.
OK, you first:

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Old 11-16-16, 11:26 PM
  #75  
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Wonderful Gugie. Your acting out my dream. One of these days, I wanna build a frame. And I dream of being able to do it to such a fine level.

You guys are also making me want to move to the northwest. C&Vers to drink beer with... damn, what a concept...
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