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PostPosted: Mon Sep 25, 2017 11:05 am 
Retro Guru
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Joined: Tue Jun 25, 2013 10:47 am
Posts: 963
Hi there!
I wanted to share a little project of mine, that I am quite a bit proud of.

I am very interested in machining lately. I bought myself a small lathe. And now I am watching abom79, oxtools and Stefan Gotteswinter (whom I met actually in person) on youtube, lusting after their knowledge and equipment.

But to return to the scope of this forum, I am also restoring a very sad looking Klein Pinnacale. It was very much abused, when I got it. Dings and scratches all over the place, badly drilled holes for a Magura brake and no paint left on it!

This is how it looked like, when I got it.
Image
Image

All the parts are scrap, basically. I'll be rescuing the RS1 fork thou.

And I've been reading a lot about the early inventors of the mountainbike scene lately. FTW, Cameron, WTB and the likes. I somewhat got inspired by their way to fabricate their own stuff. Parts, frames, everything. And that fell in line with me trying to learn fabrication and machining. I thought, I might take that battered old Klein in that direction and make it a "Cameron-style self-fabricobbled-together" kind of bike.

With my limited abilities and machinery I picked a part that seemed easy enough and that I wanted to put on the bike. An American Classic quick release. I have one on another bike. A good pattern to look at. And I took some scrap metal I had collected from work and from the scrap metal place nearby.
I spent two (or was it three? :roll: ) afternoons in my basement, measuring, thinking, trying and having a whole lot of fun, actually.
And this is what came out:

Image

Image

Image

This is the "original":
Image

As you may notice, it has a bigger diameter than my version and looks a bit clunkier on that kind of frame.

What do you think?

:D


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PostPosted: Mon Sep 25, 2017 11:29 am 
Retro Guru

Joined: Thu Aug 27, 2015 7:26 pm
Posts: 314
Location: French Alps
Nice work. A lathe's a great tool, I love mine.

For the lever, I assume you turned it, including its eccentric, and then bent it? Heated and bent, or just bent cold?

How much eccentric, by the way?

Simon


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PostPosted: Mon Sep 25, 2017 11:43 am 
Old School Grand Master

Joined: Wed Feb 26, 2014 8:20 pm
Posts: 5412
Great job, love stuff like this as it really makes the bike your own :)


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PostPosted: Mon Sep 25, 2017 12:10 pm 
Retro Guru
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Joined: Tue Jun 25, 2013 10:47 am
Posts: 963
@ tufty: On my first attempt of the lever I heated it before bending but it gave me a very ugly rainbow-like coloration on the metal. And I was not able to wirepad it out. So on my second attempt I just cold bent it and it came out well. I have to say, the rod is bored out. I guess that helped.

The excentric part is 0.5mm off centre witch results in 1mm of "movement".

@ Minifreak: Yes, absolutely.


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 Post subject: Re:
PostPosted: Mon Sep 25, 2017 1:19 pm 
BoTM Winner
BoTM Winner

Joined: Thu Jan 19, 2006 1:23 pm
Posts: 2828
Location: NW England
Very nice, If I had more time I could definitely get into doing something similar.
Quick question for all you machinists, I have a set of kingsberry Qr which are pretty much identical to the American classic design pictured above, but the groove where the circlip sits in is worn so that it pings off in use. How would I go about making it good again, presumably to take a smaller circlip, without any specialist tools?


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PostPosted: Mon Sep 25, 2017 3:07 pm 
King of the DuckBoard
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Joined: Sun Jan 28, 2007 12:30 pm
Posts: 22932
Location: Is not a retrobike rider
looks excellent.


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