ORBO Le Klunker de Acatène

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I finished both sides in regards to bending.
I might have time later this week for some mitering/notching.
In the meantime I will think or feel about what is right.

As my Mama used to say "If you got it, flaunt it".
The loops may give you some real estate for something fun/cool/etc. You probably dont want anything to district from the engineering that went in to building the shaft drive, but on the left side of the frame you may be able to come up with a cool bracket/dropout/panel that holds a pointed rear light, license plate, whatever. That may "hide" some area of the left side loop allowing people to focus on the the shaft side.
I'm probably not explaining it very well...........fantastic build/vision....
 
As my Mama used to say "If you got it, flaunt it".
The loops may give you some real estate for something fun/cool/etc. You probably dont want anything to district from the engineering that went in to building the shaft drive, but on the left side of the frame you may be able to come up with a cool bracket/dropout/panel that holds a pointed rear light, license plate, whatever. That may "hide" some area of the left side loop allowing people to focus on the the shaft side.
I'm probably not explaining it very well...........fantastic build/vision....
I love that quote :thumbsup:I had to translate 'flaunt' to Dutch first because first I thought it meant 'hitting someone' like with a whip haha
:rofl:

I think I get your explanation and the great opportunities that come with it! Thanks for that.
My build vision is definitely klunker, without lights, plates or fenders, but that doesn't mean I am not going to 'flaunt' with the looptail and the shaft.

I'll try and describe my vision and works for the frame and the bike, feel free to comment or add.
  • Looptail:
    • Braze on an eyelet on the right side to connect the shaft. The shaft is disassembled and removed to the right, so I'll fix the loop with eyelet on the inside of the shaft connection.
    • Left side: Same eyelet like on the right, but one or two more, so I can create a milled or watercut dropout on the left. The shaft housing is made from aluminium, so I kinda like that balance having also aluminium on the right.
  • Frame:
    • Depending on overall look and balance once the loopy's are attached:
    • Add a bar, making is a 'double bar'.
    • Gussets?
  • Colour:
    • No idea. I was thinking of painting the shaft in a different colour than the frame. The frame with a clearcoat would be nice.
    • Maybe (maybe) I can anodise the complete shaft, but it depends on the base material (cast or milled, aluminium type etcetera).

Lots to do! :crazy2:
 
I'm trying to keep the pace here, because there is so much to do. I managed to have some hours off from work and have framebuilding fun.

I decided to notch the loopy by hand and take my time to get it right.

Then I started preparation for brazing: Cleaning/descaling the tubes, degreasing and fluxing.

I also used my new foldable table. It can hold the jig and frame in a 90 degree angle, so I don't have to fight gravity when brazing.

I will clean the brazed sections later in one go.

Very happy with the result, although still learning :thumbsup:

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First course round file. I'll go finer when I reach the desired result.

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Lookin' good chum!

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Fully fluxed. I'll remove the shaft when I finish the lower chainstay part.

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Fire!!!

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Hot!

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Managed to not heat up the shaft too much. Perfect! I'll remove the shaft for the bottom part though.

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Sideways.

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Next: A braze-on M8 threaded bush here.
 
I'm trying to keep the pace here, because there is so much to do. I managed to have some hours off from work and have framebuilding fun.

I decided to notch the loopy by hand and take my time to get it right.

Then I started preparation for brazing: Cleaning/descaling the tubes, degreasing and fluxing.

I also used my new foldable table. It can hold the jig and frame in a 90 degree angle, so I don't have to fight gravity when brazing.

I will clean the brazed sections later in one go.

Very happy with the result, although still learning :thumbsup:

View attachment 287241
View attachment 287242
First course round file. I'll go finer when I reach the desired result.

View attachment 287243
View attachment 287245
Lookin' good chum!

View attachment 287246
View attachment 287247
View attachment 287248
Fully fluxed. I'll remove the shaft when I finish the lower chainstay part.

View attachment 287249
Fire!!!

View attachment 287250
Hot!

View attachment 287251
Managed to not heat up the shaft too much. Perfect! I'll remove the shaft for the bottom part though.

View attachment 287252
View attachment 287253
Sideways.

View attachment 287254
View attachment 287255
View attachment 287256
View attachment 287257
Next: A braze-on M8 threaded bush here.
Dude this is so awesome! Keep going!
 
Dude this is so awesome! Keep going!
BRE you at taking it to the next level here! Really like your frame geometry and the direct drive idea.

RaT oN~!
Thanks guys!
Always good to see you here roaming n' building OJ :thumbsup:

I drilled a hole for the shaft-loopy connection. Used a bush for guidance.
Drilled with a lot of patience.

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Oh yes!

20250123_101203.jpg

8.3mm. The loop does not touch the shaft housing by the way!


Then I turned the frame around. Also for the left loopy.
I had to reposition the seat tube jig clamp. The out-of-the-centerline bottom bracket is a pain in the hiney.

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Machined steel bushes. Threads are M6. Strong enough for this. I intend to use steel 12.9 screws.
Reason to keep the current hole 8.3mm is the CrMoly 15mm tube walls that are intact. It wasn't my goal to have the hole exactly in the centre of the tube. Happy with the result!
 
Last edited:
After the update above, I have a question:

There a fairly big chance I'll built this frame into a double bar.
I want to use 22mm CrMoly tube.

What are your thoughts on the position?
I think I have a slight preference for the higher tube.

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I can decide much later. But I like to let the ideas simmer for now :thumbsup:
 

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