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  #976  
Old 03-01-2018, 09:40 AM
jamesdak jamesdak is offline
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Late to the game but that is beautiful work Dave!!
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  #977  
Old 03-12-2018, 01:42 PM
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David Kirk David Kirk is offline
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Stainless Onesto adorned with fine Italian aluminum.

dave

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  #978  
Old 03-12-2018, 03:57 PM
Burnette Burnette is offline
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More!

Quote:
Originally Posted by David Kirk View Post
Stainless Onesto adorned with fine Italian aluminum.

dave

Like. Is there any chance we can see the whole bike? I like the red bar tape on a Stainless Onesto.
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  #979  
Old 03-12-2018, 06:44 PM
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David Kirk David Kirk is offline
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Quote:
Originally Posted by Burnette View Post
Like. Is there any chance we can see the whole bike? I like the red bar tape on a Stainless Onesto.
Like this?

dave
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  #980  
Old 03-12-2018, 07:06 PM
93KgBike 93KgBike is online now
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That picture of your garage is... well, it makes me feel like an amateur at life.

No wonder you won. I take my hat off to you, man.
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  #981  
Old 03-12-2018, 10:22 PM
Burnette Burnette is offline
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Yes!

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Like this?

dave
Thanks Dave. Yep, I wanted to see the finished bike and it is nice!
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  #982  
Old 03-14-2018, 07:58 PM
StephenCL StephenCL is offline
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Quote:
Originally Posted by David Kirk View Post
Ready to send off to Dario Pegoretti to use as his canvas.

dave





Love the unicrown fork...I have one made from Genius tubing...rides like butter!
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  #983  
Old 03-14-2018, 08:32 PM
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David Kirk David Kirk is offline
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Quote:
Originally Posted by StephenCL View Post
Love the unicrown fork...I have one made from Genius tubing...rides like butter!
Oh but looks are deceiving - it's not a unicrown. I've never met a unicrown I like the ride of but I do like the seamless look when it comes to matching a fillet frame.

If you look closely you'll see a silver line that is the parting line between the blade and the internal crown.

dave
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  #984  
Old 03-15-2018, 12:17 PM
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David Kirk David Kirk is offline
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What do you get when you mix some stainless with a little bit of silver and adorn it with a bit of bronze, a bit or brass, and a splash or paint? Onesto.

This one headed to the Bay area and it's built with Sram Red, HED and Deda components.

dave

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  #985  
Old 03-15-2018, 07:08 PM
OtayBW OtayBW is offline
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^ That is just spectacular. The powder blue lugs and fork crown....does not get any nicer than that, IMO. Well done!
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“A bicycle is not a sofa”
-- Dario Pegoretti
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  #986  
Old 04-04-2018, 04:26 PM
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David Kirk David Kirk is offline
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I enjoy sharing photos of work in progress as I think it gives the viewer a small insight to how it works. But often it might not be obvious as to what the viewer really looking at.

Today I'm working on a JK Special road bike and I took a photo of the upper head lug at each of its major steps. First it's sitting on the plate and next you can see it dry fit with the tubes and lugs in the jig.

Next it is fluxed and tacked (a small spot of braze to hold it together) and then it is removed from the jig and it's fully brazed together.

Lastly you can see the look when it's cleaned up and ready for paint. There of course were many steps before the above occurred (tube mitering, lug shaping and adjusting, the setting of the jig...etc) but this might give you a better idea of the progression that a single joint goes through.

Thanks as always for looking.

dave









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  #987  
Old 04-04-2018, 11:25 PM
54ny77 54ny77 is offline
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dave what are those little holes in the lugs? functional at some stage of the process, or artistic?
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  #988  
Old 04-05-2018, 09:20 AM
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David Kirk David Kirk is offline
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Quote:
Originally Posted by 54ny77 View Post
dave what are those little holes in the lugs? functional at some stage of the process, or artistic?
The holes in the side of the lug perform no function aside from giving a place to put a small splash of contrasting color in the paint.

dave
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  #989  
Old 04-05-2018, 05:18 PM
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David Kirk David Kirk is offline
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Whoa.

I do not use any nails in the building of my bikes. Nails are for old shoes and houses.

I "tack" the lugs in place with small spots of braze to hold them together very accurately (in both angle and alignment) so that I can then put the frame in a workstand and do the brazing. This can be seen in the third photo with small spots of silver on the upper top tube lug point and on the front of the head tube.

Back in my Serotta days we experimented with pins (nails really) with the idea that it might save time. It didn't. But the real issue was that the angles would creep a little bit with the nails and then you'd braze it and the angles would be off a little. This was discovered by trying to put the brazed frame back into the jig and it wouldn't go back in at the original settings. Every frame should be able to slip right back into the jig after being brazed. If it doesn't then something is off. This is not to mention the "fun" one has taking apart a frame that used nails to replace a top tube......

Tacking and brazing will allow the frame to go back into the jig without issue and if you spec'd a 72.8° head angle that's what you actually get.

No nails for me.

Dave


P.S. - the lower photo made me cringe in a big way. That joint was dramatically overheated. Yow.
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  #990  
Old 04-05-2018, 05:43 PM
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AngryScientist AngryScientist is offline
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thanks for that explanation Dave with regard to "pinning" or nailing joints.

very insightful and makes perfect sense to me.

i have decided to just delete my post above with the pictures, as this is your thread and we dont want any confusion with work that is not yours.

always enjoyable chat though.
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