How to build a lugged steel frame, with pics
03-20-08, 12:18 PM
#1
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How to build a lugged steel frame, with pics
I've had a few people suggest that since I'm building a new frame why not document it in a thread. So, for those that might be interested here's how a lugged steel frame goes together. I know some of you have barely or rarely seen lugged steel frames but this is how bikes have been put together for over a century. I'm using a Deddaccia Com12.5 tubeset, Henry James lugs and drops, Everest crankshell and a full sloping stainless fork crown. The head lugs and fork tips and drops will be high polish.
First thing is to braze the seat tube and crankshell.
I've added some stainless cable guides to the crankshell.
Next, miter the downtube/headtube joint...
A fitup with the lower headlug, more lug filing to do before brazing..
.Here's the lower headlug brazed and polished and the toptube mitered and fitted up.......
.And the toptube/seat tube miter fitted up..
As it looks in the jig. Toptube ready for flux.....
Black flux on the headlug since it's stainless.White flux on the seatlug since it's all alloy steel.
The seat lug brazed and cooling off. The flux is now a glassy coating that's starting to crack..........
First thing is to braze the seat tube and crankshell.
I've added some stainless cable guides to the crankshell.
Next, miter the downtube/headtube joint...
A fitup with the lower headlug, more lug filing to do before brazing..
.Here's the lower headlug brazed and polished and the toptube mitered and fitted up.......
.And the toptube/seat tube miter fitted up..
As it looks in the jig. Toptube ready for flux.....
Black flux on the headlug since it's stainless.White flux on the seatlug since it's all alloy steel.
The seat lug brazed and cooling off. The flux is now a glassy coating that's starting to crack..........
Last edited by Cassave; 12-02-22 at 11:25 AM.
03-20-08, 12:23 PM
#2
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Moving on..............
Upper head lug brazed and the flux washed off, ready to file the lug shoreline.
The front of the main triangle. Lower head lug polished, upper head filed and almost ready to polish.
The main triangle, brazed. Head and seat tubes not yet trimmed.
I'll build the fork next. Prepping the crown.
Upper head lug brazed and the flux washed off, ready to file the lug shoreline.
The front of the main triangle. Lower head lug polished, upper head filed and almost ready to polish.
The main triangle, brazed. Head and seat tubes not yet trimmed.
I'll build the fork next. Prepping the crown.
Last edited by Cassave; 12-02-22 at 11:09 AM.
03-20-08, 12:27 PM
#3
How much does it weigh?
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Wow.... Great work, and thanks for documenting!
and what are your prices?
and what are your prices?
03-20-08, 12:28 PM
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My bicycle is fixed
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Very nice pics. Can you talk about your experience leading up to this project -- e.g., other metalworking skills that you have, special tools, have you built bicycle frames before (I assume that you have), etc.
(For my money: lugged steel is as beautiful as a bicycle frame gets.)
(For my money: lugged steel is as beautiful as a bicycle frame gets.)
03-20-08, 12:29 PM
#5
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03-20-08, 12:31 PM
#6
hello
Is that the 53 you're putting together for me? So far so good!
Thanks for posting, this is very interesting. I wish I had the tools and the skills to do this.
Thanks for posting, this is very interesting. I wish I had the tools and the skills to do this.
03-20-08, 12:35 PM
#8
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Very nice pics. Can you talk about your experience leading up to this project -- e.g., other metalworking skills that you have, special tools, have you built bicycle frames before (I assume that you have), etc.
(For my money: lugged steel is as beautiful as a bicycle frame gets.)
(For my money: lugged steel is as beautiful as a bicycle frame gets.)
Special tools? Not much. Homemade fixtures and fork blade
bending tool (more pics coming).
03-20-08, 12:38 PM
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Thank you. That is an amazing process...
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03-20-08, 12:40 PM
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I'm not sure I understand... is this the mold, over which you will lay the carbon fiber?
But seriously, can't wait to see it. Color scheme?
But seriously, can't wait to see it. Color scheme?
03-20-08, 12:42 PM
#11
aka. vertical jon
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03-20-08, 12:43 PM
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03-20-08, 12:53 PM
#13
Embracing the fredness
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Wow....thanks Steve....very very cool...and extremely interesting!!!
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03-20-08, 01:52 PM
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just keep riding
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NICE!!!
03-20-08, 02:06 PM
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03-20-08, 02:07 PM
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03-20-08, 02:08 PM
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got the climbing bug
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great pics!!!
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Rule #10 // It never gets easier, you just go faster.
Rule #10 // It never gets easier, you just go faster.
03-20-08, 02:12 PM
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PINK
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May you live long, live strong, and live happy!
03-20-08, 02:16 PM
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aka. vertical jon
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03-20-08, 02:27 PM
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Now how did I guess that you might say that?
But seriously, thank you. I know when I first read here that you built bikes I was very curious but I never did make it over to the Framebuilders subforum so thanks again for putting this together...
Now when they get that hemp based frame material perfected...
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May you live long, live strong, and live happy!
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