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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Complete Restoration of a Black Shadow
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<blockquote data-quote="Magnetoman" data-source="post: 127760" data-attributes="member: 2806"><p>As it turns out, due to an unfortunate incident in 1960 that kept the original owner from using or modifying it for the next 30 years, and me buying it then and not modifying it for the subsequent 29, it was frozen in time just ten years after it was made. Because of this, I don't anticipate that I will come across too many non-factory alterations as I dig into the machine.</p><p></p><p>Depending on what those laminations were made of, the architect might have been right. But, if they were made of steel, he was wrong. Cd isn't a cheaper alternative to Zn, but rather has properties that make it superior to Zn in quite a few, but not all, applications. Aircraft manufacturers certainly were aware of Zn plating, but until environmental issues became paramount the fasteners were Cd plated. In recent years a hybrid Zn-Ni plating process was developed for aircraft that is claimed to give equivalent (but not better) protection than the toxic Cd.</p><p></p><p>Aluminum, cadmium, zinc, stainless steel, and polished steel all are "silver," but each has its own distinctive hue. Personally, I love the look of Cd against polished bronze. Anyway, the look and function of stainless is excellent in a kitchen, but whenever I see stainless on a "restored" bike (as opposed to a daily rider) I wonder what other cheap and easy shortcuts the builder took. [*]</p><p></p><p>[*]Not that stainless all by itself is cheap, but in addition to disruption of the flow of a build, factoring in the cost of labor to remove a part, pack and ship it, have it plated, spend time remembering where that part goes on the bike when it eventually returns from the plater, and re-installing it, a stainless aftermarket part almost always is the cheap and easy alternative.</p></blockquote><p></p>
[QUOTE="Magnetoman, post: 127760, member: 2806"] As it turns out, due to an unfortunate incident in 1960 that kept the original owner from using or modifying it for the next 30 years, and me buying it then and not modifying it for the subsequent 29, it was frozen in time just ten years after it was made. Because of this, I don't anticipate that I will come across too many non-factory alterations as I dig into the machine. Depending on what those laminations were made of, the architect might have been right. But, if they were made of steel, he was wrong. Cd isn't a cheaper alternative to Zn, but rather has properties that make it superior to Zn in quite a few, but not all, applications. Aircraft manufacturers certainly were aware of Zn plating, but until environmental issues became paramount the fasteners were Cd plated. In recent years a hybrid Zn-Ni plating process was developed for aircraft that is claimed to give equivalent (but not better) protection than the toxic Cd. Aluminum, cadmium, zinc, stainless steel, and polished steel all are "silver," but each has its own distinctive hue. Personally, I love the look of Cd against polished bronze. Anyway, the look and function of stainless is excellent in a kitchen, but whenever I see stainless on a "restored" bike (as opposed to a daily rider) I wonder what other cheap and easy shortcuts the builder took. [*] [*]Not that stainless all by itself is cheap, but in addition to disruption of the flow of a build, factoring in the cost of labor to remove a part, pack and ship it, have it plated, spend time remembering where that part goes on the bike when it eventually returns from the plater, and re-installing it, a stainless aftermarket part almost always is the cheap and easy alternative. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Complete Restoration of a Black Shadow
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