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Anodizing Weirdness…..

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Anodizing Weirdness…..

Old 04-15-24, 05:36 PM
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Anodizing Weirdness…..

A friend is building a vintage (lugged) style bike for the MADE show and asked if we could do something special for the components.

Coupled with meeting a guy at a wine event I was a panelist at, who anodizes for a living.

Gold was the idea we came up with.




the cranks came out great. 800 grit sandpaper got rid of the toe strap marks




the seat post, even though polished has strange marks. Most of the marks will be below the insert line, but still.




then there’s the front derailleur.

we both assumed the parts were aluminum

afterall, it was previously anodized silver.

BUT, … they say the back part is pot metal and will not accept the dye.

Strange.


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Old 04-15-24, 05:42 PM
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Actually, most silver things are anodized with clear.
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Old 04-15-24, 05:56 PM
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I think that's a happy accident. The black and gold is a very cool combo, provided it matches the bike.
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Old 04-15-24, 06:06 PM
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Maybe black anodize the chain rings to go with the front derailleur.
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Old 04-15-24, 06:07 PM
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It's been done.


This guy had a bunch of gold anodized Campy parts for sale on eBay a few years ago: seat post, cranks and derailleurs for sure, and I think brake calipers, brake levers and pedals, too. Your cranks are downright subtle by comparison.
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Old 04-15-24, 08:00 PM
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I've talked to them. That's GOLD PLATED!!
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Old 04-15-24, 08:15 PM
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Those cranks remind me of Takagi and Sugino anodized cranksets from my BMX youth. Sweet!
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Old 04-15-24, 08:28 PM
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Careful with what you post , I got seriously scolded and removed for mentioning something like that gold colored non bike related item! 🙄
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Old 04-15-24, 09:46 PM
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Originally Posted by plonz
Those cranks remind me of Takagi and Sugino anodized cranksets from my BMX youth. Sweet!
Campagnolo offered blue and gold anodized hubs, pedals, and cranks for the BMX market. I think these were Pista cranks and Tipo hubs, offered for a year or two around 1983.
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Old 04-15-24, 11:01 PM
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Originally Posted by Jeff Wills
Campagnolo offered blue and gold anodized hubs, pedals, and cranks for the BMX market. I think these were Pista cranks and Tipo hubs, offered for a year or two around 1983.
on the Cinelli bike!!
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Old 04-16-24, 04:49 AM
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Originally Posted by Kabuki12
Careful with what you post , I got seriously scolded and removed for mentioning something like that gold colored non bike related item! 🙄

Yeah. me too.

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Old 04-16-24, 06:37 AM
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Originally Posted by Robvolz

then there’s the front derailleur.

we both assumed the parts were aluminum

afterall, it was previously anodized silver.

BUT, … they say the back part is pot metal and will not accept the dye.
That looks like "smut" to me, a real deep layer of it.
Aluminium gets that way if bits of it in contact with steel are in an electrolytic (for de-rusting the steel) bath.
Zinc - the primary constituent of most "pot metals" - is quite electronegative relative to aluminium, almost as much as iron, and their process if it does that to pot metal probably also does it to steel-and-ally.
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Old 04-16-24, 08:56 AM
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One click said, "That looks like "smut" to me, a real deep layer of it.
Aluminium gets that way if bits of it in contact with steel are in an electrolytic (for de-rusting the steel) bath.
Zinc - the primary constituent of most "pot metals" - is quite electronegative relative to aluminium, almost as much as iron, and their process if it does that to pot metal probably also does it to steel-and-ally."

Yes, there are the two stainless pins for pivots, and I did not remove the hinge pin. Perhaps a factor.

is there any reversing the black?
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Old 04-16-24, 10:05 AM
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Robvolz did you ship the parts to the anodizing shop or bring them in person? What did they charge for the work?
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Old 04-16-24, 10:39 AM
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I biked them there. They have a $50 minimum and I found out later I could have added more parts to the order and still been within the $50 minimum.

They used to do all Chris King's work until Chris invested in his own anodizing company.
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Old 04-16-24, 10:39 AM
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Originally Posted by Jeff Wills
Campagnolo offered blue and gold anodized hubs, pedals, and cranks for the BMX market. I think these were Pista cranks and Tipo hubs, offered for a year or two around 1983.
I have a blue Campy 43 tooth 144 BCD 1/8" chainring that has been seen on my avatar photo bike. Made for BMX BITD. A Seattle trackie and forum mate on a long lost forum picked it up. Gave it to me when I was setting up Jessica J, that bike. Her blue dress. (On 175 Sugino 75s. Pretty spiffy! She struts wearing it.)
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Old 04-16-24, 01:46 PM
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the great Jon Williams RIP (aka Drillium) had an anodizing shop in Medford OR that he "trained up" to closely replicate the silver gray of Campy components.

I have a set of his lightly machined and anodized IRD cranks.

The gold seems a bit too "gaudy" on a bike, to me, at least whole components. Trim bits, maybe.

having said that, I just got a "unicorn" rainbow anodized water bottle cage from Silca, and matching bolts.

mounted on my custom Mark Dinucci frame, which a couple of you have ridden.

/markp


Last edited by mpetry912; 04-16-24 at 01:52 PM.
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