Technical & Reference Section > Tech and Restoration

She's finally arrived - Changa Build

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Picklez:
So, finally I could build up the back hub, drop the wheel in and get on with things.

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That part sorted I could turn my attention to the other side of the wheel, the coaster arm.

You may recall I'm after a tilt of homage to an old setup Woody used to run on his early trickstars, pre SST hub days:

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Where he reversed the coaster arm and ran it on the upper side of the seat stay rather than lower side of the chain stay and kept it all in position with an Addicks seat post clamp. So, off we go.

Here's conventionally fitted

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Picklez:
Then upside down

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Trouble here is obviously that the profile of the arm means that reversing it pushes it further into the wheel centreline, i.e., further way from the offset needed to conveniently mount it to the seat stay

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No problem like in the picture of Woody's example it's simply a case of some aggressive bending.

Well, after many trips between cave and workshop bench, and physically breaking my first vice into two parts (cheap Chinese sh!t), waiting three days, installing new vice, and carrying on, I had the arm in the required shape

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Picklez:
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So, wanting a good chrome finish next was a good polish before sending it off for chroming

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Then it also arrived home, and could be fitted

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So, on to the seat clamp mount. Some may recall I'm not a fan of Addicks clamps, or butchering one for my requirements. So, twin bolt DC option won out for me. But as I had plans to hack it up, more on that in a minute, I didn't want to go the route of OG. So, for this just one of the cheaper reproduction ones was located.

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Picklez:
The ?hacking?. Well, I wanted everything to bolt up flush once I?d clamped the coaster arm in place, not for it to be compressed on one side of the clamp more than the other when all mated up to the frame. So, out with the Dremel and shave 1.5mm off of one inner face from each side of one end of the clamp

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Then finally, not in an effort to deceive anyone, more to make it present more ?age correct? and in an effort to remove the text the reproductions have embossed on them, as well as want transpires to be silver anodise some prep was needed. Removing that text was damn hard work. Paint stripper and even Ovenpride didn't touch it. So, in the end the good old favourite of down through the sandpaper grades.

Here we are at 600grit

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Then 1200

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And finally, 2000

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Before final polishing

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Picklez:
Then it came to filling the gap naturally left between seat stay and clamp. Rather than the old school approach of electrical tape or an old bit of innertube I wanted a little cleaner look than that. So off to Amazon and ordering of this clear tape

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Which trimmed and fitted looked like this,

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And then I could finally fit it up and sleep a little easier knowing I?d finally (nearly) sorted the back wheel

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I say nearly sorted as I've still desire for some sensible rear wheel nuts, as most of you know.

Well, I may have some Tuf Neck 24tpi's sorted, I'm just praying they're not lost in the post ? been waiting now since the end of December. Still hopeful, but may have to start looking around again soon if they don't materialise. We'll see.

Anyway, might be able to talk chain soon, and that really has been ?fun?. But have a negotiation going on at present that may finally resolve that to my liking. If not I'll be moving on to either the bars or revisiting the brakes for the next update. Depends how much cold I can tolerate at the workshop bench?

Cheers guys. Keep  :radbmxsmilie:  :daumenhoch:

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