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Il Gregario - a custom project

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Il Gregario - a custom project

Old 01-16-23, 03:51 PM
  #126  
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Originally Posted by repechage
Cycledesigns (Fred Parr's old brand) might still be around. They had a filler one could even create a fillet with.
Yes, Fillet Pro.
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Old 09-29-23, 03:21 PM
  #127  
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I made handlebars. Cork grips have been ordered.

IMG_3066 by iabisdb, on Flickr

IMG_3068 by iabisdb, on Flickr

IMG_3070 by iabisdb, on Flickr

IMG_3073 by iabisdb, on Flickr

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Old 09-29-23, 03:24 PM
  #128  
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Don't know if I posted, but these are the wheels.

Wheels by iabisdb, on Flickr
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Old 09-29-23, 05:24 PM
  #129  
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I'm happy to see this ambitious project still moving forward!
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Old 11-02-23, 06:54 PM
  #130  
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Made some pedals.

Gregario pedal 01 by iabisdb, on Flickr

Gregario pedal 02 by iabisdb, on Flickr
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Old 12-05-23, 06:34 PM
  #131  
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Printed versus polished lugs.

Lugs02 by iabisdb, on Flickr

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Old 12-05-23, 06:37 PM
  #132  
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I'd like to build in a lock into the seat stay bridge. This version didn't work. I have another coming soon.

Lock 01 by iabisdb, on Flickr

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Old 12-07-23, 01:26 AM
  #133  
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Those bars are stylish beyond belief! Sorry, new to this thread, are they 3D printed too?
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Old 12-07-23, 03:54 AM
  #134  
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Originally Posted by CMAW
Those bars are stylish beyond belief! Sorry, new to this thread, are they 3D printed too?
No. Stem and levers were machined. Bars are bent 6061 tubing. Then welded and polished.

Lugs have a thin wall, about 1.2mm, ideal for printing and almost too thin for machining. The stem has 3mm walls, ideal for machining, and gets pricey to print.
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Old 12-07-23, 04:28 AM
  #135  
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Originally Posted by iab
No. Stem and levers were machined. Bars are bent 6061 tubing. Then welded and polished.

Lugs have a thin wall, about 1.2mm, ideal for printing and almost too thin for machining. The stem has 3mm walls, ideal for machining, and gets pricey to print.
I am just astounded by what can be done with printed stuff. But your bars, stem and levers are sublime. Amazing work.
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Old 12-07-23, 08:30 AM
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Upper headlug has a family styling clue to about a 1,000 years ago.


yours is much more sophisticated.
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Old 04-19-24, 08:11 PM
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Parts! Finally pulled the trigger.

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Old 04-20-24, 04:52 AM
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Originally Posted by iab
Parts! Finally pulled the trigger.

Wow. Those are neat. Were they machined or printed?

And the pedals above. What body did you attach the plates to?
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Old 04-20-24, 06:00 AM
  #139  
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Originally Posted by iab
Found out 3D stainless printing for just 1 of each of the 3 lugs is $5000. Yikes.
I don't recall that quote. It was 9 years ago. I did buy a single lug (top head tube) in 2017. It was $312. The box above, 21 parts total, was $445. The BB was the most expensive at $68. Not cheap, but I expect at least 160 hours of finishing. So it cost me $2.78/hour to have fun. Cheaper than a movie.

As for the pedals, I used MKS Touring bodies. I have a wide fat foot. Quills and toe clips are very uncomfortable to me.

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Old 04-20-24, 06:08 AM
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Originally Posted by iab
I don't recall that quote. It was 9 years ago. I did buy a single lug (top head tube) in 2017. It was $312. The box above, 21 parts total, was $445. The BB was the most expensive at $68. Not cheap, but I expect at least 160 hours of finishing. So it cost me $2.78/hour to have fun. Cheaper than a movie.

As for the pedals, I used MKS Touring bodies. I have a wide fat foot. Quills and toe clips are very uncomfortable to me.

I actually just broke down and read about 3D printing of metal filaments and how itís done. Beyond my engineering ability but very interesting how it goes from metallic powder to what you have.

What tubing will you use?
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Old 04-20-24, 06:11 AM
  #141  
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Columbus XCR. Except the fork, Columbus doesn't offer a stainless option. I went with KVA.
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Old 04-20-24, 08:25 AM
  #142  
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Originally Posted by iab
Parts! Finally pulled the trigger.
Let the polishing begin!

Looks like one of the fork dropouts is already done...

Have you estimated the height of the pile of sandpaper you'll go through?

Looks like a different printing process from earlier test pieces. I don't see the "sedimentary" printing artifacts, these looke more "cast."

I'm still amazed at the 3D printing state of the art from when I was designing these kind of parts maybe 15 years ago. Costs have dropped significantly as well.
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Old 04-20-24, 08:35 AM
  #143  
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Originally Posted by gugie
Let the polishing begin!
After 4 failed attempts to bend 0.5" 304 around a tight mandrel I decided to print the piece for the rear rack crown. $22.57.
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Old 04-20-24, 08:59 AM
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Originally Posted by iab
After 4 failed attempts to bend 0.5" 304 around a tight mandrel I decided to print the piece for the rear rack crown. $22.57.
Nice!

The Atelier has a large scrap bin for this very reason. As long as I stick to same bend, same material dimensions I'm pretty confident in my rack/decaleur designs. When I'm asked to go outside of my comfort zone, I light a few candles before horking down on tubing.
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Old 04-20-24, 09:00 AM
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Once again, sir, you manage to astound those among us who are less creative and experimental.
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