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Ludalloy Supraphonic

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Just picked one up from the 70s and the chrome is flaking in a few spots. Inside the shell is the ludalloy sticker. Are most Supraphonics like this or are most chrome over steel or brass? This snare has a pointy blue/olive badge without a serial #. Thanks.

70s Slingy WMP
70s Ludwig Standard Aqua Mist
60s Ludwig Champagne Sparkle Downbeat
and a whole bunch of snares and hardware
Posted on 14 years ago
#1
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Most are Ludalloy (low grade aluminum).

"God is dead." -Nietzsche

"Nietzsche is dead." -God
Posted on 14 years ago
#2
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From O-Lugs

Most are Ludalloy (low grade aluminum).

Actually it is a high grade of aluminum, not aircraft grade, but still high quality. The pitting and flaking has more to due with the conditions the drum was subjected to over its life than the quality of the chrome plating job or the quality of the aluminum.

Posted on 14 years ago
#3
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Thanks, this snare has a hand etched 244 serial number, it is not stamped - do you think it never had one and someone etched it in after?

70s Slingy WMP
70s Ludwig Standard Aqua Mist
60s Ludwig Champagne Sparkle Downbeat
and a whole bunch of snares and hardware
Posted on 14 years ago
#4
Posts: 5173 Threads: 188
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LOL! Right. It's definitely not aircraft grade.

I never suggested the pitting had anything to do with the grade of aluminum.

"God is dead." -Nietzsche

"Nietzsche is dead." -God
Posted on 14 years ago
#5
Posts: 5173 Threads: 188
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From cnw20

Thanks, this snare has a hand etched 244 serial number, it is not stamped - do you think it never had one and someone etched it in after?

Have to see it to be sure....but, yeah, that's likely the story.

"God is dead." -Nietzsche

"Nietzsche is dead." -God
Posted on 14 years ago
#6
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Is it possible it once was in a schools' inventory? That might explain the hand etching. That's the ticket, yeah, school boy drum, yeah..

From cnw20

Thanks, this snare has a hand etched 244 serial number, it is not stamped - do you think it never had one and someone etched it in after?

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Posted on 14 years ago
#7
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From Ludwig-dude

Actually it is a high grade of aluminum, not aircraft grade, but still high quality. The pitting and flaking has more to due with the conditions the drum was subjected to over its life than the quality of the chrome plating job or the quality of the aluminum.

Hi,

Not a metallurgist, so happy to be corrected. It is my understanding that while you CAN prepare aluminum for chrome plating; the Ludalloy shells were not adequately prepared for the chrome plating. The sort of pitting and flaking that you see on Ludalloy snares is a common feature for aluminum surfaces that have not been sufficiently prepped (cleaned of aluminum oxides as I understand it).

Because the problem is the underlying surface and the aluminum oxides inherent in the substrate, the acne came from within.

I know there are a few unblemished Ludalloys out there, and expect that some Ludalloy was better prepped.

Patrick

Posted on 14 years ago
#8
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That's exactly correct, Patrick.

"God is dead." -Nietzsche

"Nietzsche is dead." -God
Posted on 14 years ago
#9
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From patrick

Hi,Not a metallurgist, so happy to be corrected. It is my understanding that while you CAN prepare aluminum for chrome plating; the Ludalloy shells were not adequately prepared for the chrome plating. The sort of pitting and flaking that you see on Ludalloy snares is a common feature for aluminum surfaces that have not been sufficiently prepped (cleaned of aluminum oxides as I understand it). Because the problem is the underlying surface and the aluminum oxides inherent in the substrate, the acne came from within. I know there are a few unblemished Ludalloys out there, and expect that some Ludalloy was better prepped.Patrick

I recently heard that very same thing second hand from a Ludwig family member. The cleaning process before plating included an acid wash, and he suspected that a certain lack of control during that procedure led to the flaking problem down the road.

Kevin
Posted on 14 years ago
#10
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