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#51
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How can I blacken stainless steel spokes?
On May 14, 9:56*pm, jim beam wrote:
Chalo wrote: jtaylor wrote: jim beam wrote: Chalo wrote: Stainless spokes are always made of 300-series _austenitic_ stainless alloy, doctor. They don't heat treat. You can have martensitic spokes or whatever you like, but you'll have to make them yourself. er, on deformation, they become martensitic, circus clown. that's why they're magnetic. because you /do/ know austenitic steels are not magnetic don't you? you /have/ put a magnet up against bike spokes and pondered these things haven't you? As always with the stuff "jim beam" posts, it is wise to check. First off, a quick refresher on 300-series; these are Chromium-Nickle Austentic steels - the book I grabbed uses the old SAE numbers, but the last three digits are the same; 301 has the lowest Nickle, and 325 the highest; the range is from about 6% to over 20% Nickle enhances the stainless-ness, and most importantly in the instant discussion tends to maintain the austentic structure, with the result that the steel remains non-magnetic, even after cold-working. I do not know what variety of stainless is found in the spokes I have used. And, as we know, 'jim beam" places a value on experience that far exceeds that of fact as reported by his elders and betters... ...so... ...I took a magnet - one of those good strong "super-magnets" that they put in kids building toys, and went to where the spokes are. First some spokes I pulled out of a push-bike wheel some time ago - butted, stainless, marked with a "Z" (or perhaps an "N"; depends on how you look at it). The magnet didn't attract any of them. Next some spokes on the recumbent trike; straight, stainless, marked with something that is either a shield of a thickish "U". The magnet didn't attract any of 'em. THEN, just for fun, some motor-bike spokes - a set that I built in the 70's, stainless butted spokes from Buchannan's. Not magnetic. Another set from Buchannans, not built yet; also stainless and butted - just got em a few weeks ago. Not magnetic. This of course, is not exhaustive. And cold-working can & does affect the magnetic qualities of some stainless steels; but so far, it appears that for spokes is does so to a remarkable degree only in that small part of the cycle world where the sky is a different colour and there are no shift-keys. I shouldn't even bother correcting "jim beam's" more noteworthy technical errors within his purported field of expertise. *All it nets us us more erroneous bull puckey and unwarranted abuse. But thanks for confirming what I was saying anyway. Chalo wow! q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet. I went in the back room and discovered easy access to 13 (!) wheels. Out come the magnets. One of the wheels had galvanized spokes and of course the magnet was strongly attracted to those. A useful control. Of the remaining 12 wheels with stainless spokes, the kitchen magnet was very weakly attracted to 2, and not at all to the remaining 10. The 2 that were slightly magnetic both had DT 2.0/1.8mm butted spokes. However, I also tried other wheels with DT butted and non-butted spokes and found almost no attraction. A few wheels with Asahi and Wheelsmith stainless spokes had no attraction. Wheelsmith butted spokes have an obvious transition diameter where the swaging takes effect and I tested that part to see if the cold working had rendered them ferromagnetic at that particular spot. Nope. I then went back with a very strong magnet removed from a hard drive, and confirmed that two wheels with DT spokes were a little magnetic, the rest of the DT spokes were slightly magnetic, and the Asahi/Wheelsmith spokes weren't magnetic at all. For comparison, I tested some other household goods. Most stainless pans and my old film developing tanks are non- or very weakly ferromagnetic. The only stainless items I found to be strongly ferromagnetic were some kitchen utensils, silverware, and knives, plus a climbing implement. The ferromagnetic stainless utensils were labeled "18/0" which of course means 18% chromium and 0% nickel. This is relevant given the assertion above that higher nickel content preserves austenitic structure and hence non-magnetism. This test is repeatable by anyone, so it shouldn't be hard for rbt readers to verify for themselves. Of course, getting a magnet to stick to spokes doesn't prove they will be heat-annealed at the smoking temperature of motor oil, but I think paint is a more likely method for blackening spokes anyway. Ben |
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#52
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How can I blacken stainless steel spokes?
On Thu, 14 May 2009 21:56:07 -0700, jim beam wrote:
q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet. Now, this wouldn't be a repeat of the "jim beam" fabrication in the brake-bolts-with-cut-threads vein, would it? (For the newer readers, "jim beam" claimed that cut threads were a "disaster waiting to happen", as they are weaker than rolled threads - true, but such bolts even with such threads are strong enough for the purpose, and no examples of broken brake bolts with cut threads have been seen, even thoug they have been used on brake bolts; when this was pointed out, "jim beam" posted a link to a photo of a brake with a broken bolt as an example. Unfortunately the text accompanying the photo in the link provided clearly stated that the bolt was broken from a dfferent cause.) |
#53
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How can I blacken stainless steel spokes?
_ wrote:
On Thu, 14 May 2009 21:56:07 -0700, jim beam wrote: q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet. Now, this wouldn't be a repeat of the "jim beam" fabrication in the brake-bolts-with-cut-threads vein, would it? (For the newer readers, "jim beam" claimed that cut threads were a "disaster waiting to happen", as they are weaker than rolled threads - true, but such bolts even with such threads are strong enough for the purpose, and no examples of broken brake bolts with cut threads have been seen, even thoug they have been used on brake bolts; when this was pointed out, "jim beam" posted a link to a photo of a brake with a broken bolt as an example. so my cite of a fatigued brake bolt was /not/ a cite of a fatigued brake bolt??? even though the article clearly stated that it was??? Unfortunately the text accompanying the photo in the link provided clearly stated that the bolt was broken from a dfferent cause.) well, you're consistent in one thing jtaylor - the shamelessness of your [non-magnetic] bull****. |
#55
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How can I blacken stainless steel spokes?
On Fri, 15 May 2009 06:00:49 -0700, jim beam wrote:
Now, this wouldn't be a repeat of the "jim beam" fabrication in the brake-bolts-with-cut-threads vein, would it? (For the newer readers, "jim beam" claimed that cut threads were a "disaster waiting to happen", as they are weaker than rolled threads - true, but such bolts even with such threads are strong enough for the purpose, and no examples of broken brake bolts with cut threads have been seen, even thoug they have been used on brake bolts; when this was pointed out, "jim beam" posted a link to a photo of a brake with a broken bolt as an example. so my cite of a fatigued brake bolt was /not/ a cite of a fatigued brake bolt??? even though the article clearly stated that it was??? No, the article clearly stated that the bolt was inproperly tightened and that that was the reason for failure. And there was no indication that the bolt had cut threads. This was pointed out to you at the time by several posters - perhaps you hoped they would just take your word for it instead of clicking on the link and reading the page. |
#56
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How can I blacken stainless steel spokes?
On May 14, 11:56 pm, jim beam wrote:
Chalo wrote: jtaylor wrote: jim beam wrote: Chalo wrote: Stainless spokes are always made of 300-series _austenitic_ stainless alloy, doctor. They don't heat treat. You can have martensitic spokes or whatever you like, but you'll have to make them yourself. er, on deformation, they become martensitic, circus clown. that's why they're magnetic. because you /do/ know austenitic steels are not magnetic don't you? you /have/ put a magnet up against bike spokes and pondered these things haven't you? As always with the stuff "jim beam" posts, it is wise to check. First off, a quick refresher on 300-series; these are Chromium-Nickle Austentic steels - the book I grabbed uses the old SAE numbers, but the last three digits are the same; 301 has the lowest Nickle, and 325 the highest; the range is from about 6% to over 20% Nickle enhances the stainless-ness, and most importantly in the instant discussion tends to maintain the austentic structure, with the result that the steel remains non-magnetic, even after cold-working. I do not know what variety of stainless is found in the spokes I have used. And, as we know, 'jim beam" places a value on experience that far exceeds that of fact as reported by his elders and betters... ...so... ...I took a magnet - one of those good strong "super-magnets" that they put in kids building toys, and went to where the spokes are. First some spokes I pulled out of a push-bike wheel some time ago - butted, stainless, marked with a "Z" (or perhaps an "N"; depends on how you look at it). The magnet didn't attract any of them. Next some spokes on the recumbent trike; straight, stainless, marked with something that is either a shield of a thickish "U". The magnet didn't attract any of 'em. THEN, just for fun, some motor-bike spokes - a set that I built in the 70's, stainless butted spokes from Buchannan's. Not magnetic. Another set from Buchannans, not built yet; also stainless and butted - just got em a few weeks ago. Not magnetic. This of course, is not exhaustive. And cold-working can & does affect the magnetic qualities of some stainless steels; but so far, it appears that for spokes is does so to a remarkable degree only in that small part of the cycle world where the sky is a different colour and there are no shift-keys. I shouldn't even bother correcting "jim beam's" more noteworthy technical errors within his purported field of expertise. All it nets us us more erroneous bull puckey and unwarranted abuse. But thanks for confirming what I was saying anyway. Chalo wow! q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg A small horseshoe magnet readily picked up a DT 1.8/2.0 spoke lying on my bench. It was even more strongly attracted to a "brand x" (head broken off) Japanese 2.0 spoke also lying there. of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet. "jtaylor" is demonstrably *insane*, just ignore it. |
#57
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How can I blacken stainless steel spokes?
On May 15, 12:33 am, Hank Wirtz wrote:
On May 14, 9:56 pm, jim beam wrote: Chalo wrote: jtaylor wrote: jim beam wrote: Chalo wrote: Stainless spokes are always made of 300-series _austenitic_ stainless alloy, doctor. They don't heat treat. You can have martensitic spokes or whatever you like, but you'll have to make them yourself. er, on deformation, they become martensitic, circus clown. that's why they're magnetic. because you /do/ know austenitic steels are not magnetic don't you? you /have/ put a magnet up against bike spokes and pondered these things haven't you? As always with the stuff "jim beam" posts, it is wise to check. First off, a quick refresher on 300-series; these are Chromium-Nickle Austentic steels - the book I grabbed uses the old SAE numbers, but the last three digits are the same; 301 has the lowest Nickle, and 325 the highest; the range is from about 6% to over 20% Nickle enhances the stainless-ness, and most importantly in the instant discussion tends to maintain the austentic structure, with the result that the steel remains non-magnetic, even after cold-working. I do not know what variety of stainless is found in the spokes I have used. And, as we know, 'jim beam" places a value on experience that far exceeds that of fact as reported by his elders and betters... ...so... ...I took a magnet - one of those good strong "super-magnets" that they put in kids building toys, and went to where the spokes are. First some spokes I pulled out of a push-bike wheel some time ago - butted, stainless, marked with a "Z" (or perhaps an "N"; depends on how you look at it). The magnet didn't attract any of them. Next some spokes on the recumbent trike; straight, stainless, marked with something that is either a shield of a thickish "U". The magnet didn't attract any of 'em. THEN, just for fun, some motor-bike spokes - a set that I built in the 70's, stainless butted spokes from Buchannan's. Not magnetic. Another set from Buchannans, not built yet; also stainless and butted - just got em a few weeks ago. Not magnetic. This of course, is not exhaustive. And cold-working can & does affect the magnetic qualities of some stainless steels; but so far, it appears that for spokes is does so to a remarkable degree only in that small part of the cycle world where the sky is a different colour and there are no shift-keys. I shouldn't even bother correcting "jim beam's" more noteworthy technical errors within his purported field of expertise. All it nets us us more erroneous bull puckey and unwarranted abuse. But thanks for confirming what I was saying anyway. Chalo wow! q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet.- Hide quoted text - - Show quoted text - RBT SATs time! Is "SAT" shorthand for being a Sad Ass Troll, Hank? Take care, lest you become that which you (allegedly) abhor. |
#58
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How can I blacken stainless steel spokes?
On May 15, 12:33 am, Hank Wirtz wrote:
On May 14, 9:56 pm, jim beam wrote: Chalo wrote: jtaylor wrote: jim beam wrote: Chalo wrote: Stainless spokes are always made of 300-series _austenitic_ stainless alloy, doctor. They don't heat treat. You can have martensitic spokes or whatever you like, but you'll have to make them yourself. er, on deformation, they become martensitic, circus clown. that's why they're magnetic. because you /do/ know austenitic steels are not magnetic don't you? you /have/ put a magnet up against bike spokes and pondered these things haven't you? As always with the stuff "jim beam" posts, it is wise to check. First off, a quick refresher on 300-series; these are Chromium-Nickle Austentic steels - the book I grabbed uses the old SAE numbers, but the last three digits are the same; 301 has the lowest Nickle, and 325 the highest; the range is from about 6% to over 20% Nickle enhances the stainless-ness, and most importantly in the instant discussion tends to maintain the austentic structure, with the result that the steel remains non-magnetic, even after cold-working. I do not know what variety of stainless is found in the spokes I have used. And, as we know, 'jim beam" places a value on experience that far exceeds that of fact as reported by his elders and betters... ...so... ...I took a magnet - one of those good strong "super-magnets" that they put in kids building toys, and went to where the spokes are. First some spokes I pulled out of a push-bike wheel some time ago - butted, stainless, marked with a "Z" (or perhaps an "N"; depends on how you look at it). The magnet didn't attract any of them. Next some spokes on the recumbent trike; straight, stainless, marked with something that is either a shield of a thickish "U". The magnet didn't attract any of 'em. THEN, just for fun, some motor-bike spokes - a set that I built in the 70's, stainless butted spokes from Buchannan's. Not magnetic. Another set from Buchannans, not built yet; also stainless and butted - just got em a few weeks ago. Not magnetic. This of course, is not exhaustive. And cold-working can & does affect the magnetic qualities of some stainless steels; but so far, it appears that for spokes is does so to a remarkable degree only in that small part of the cycle world where the sky is a different colour and there are no shift-keys. I shouldn't even bother correcting "jim beam's" more noteworthy technical errors within his purported field of expertise. All it nets us us more erroneous bull puckey and unwarranted abuse. But thanks for confirming what I was saying anyway. Chalo wow! q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet.- Hide quoted text - - Show quoted text - RBT SATs time! Is "SAT" shorthand for being a Sad Ass Troll, Hank? Take care, lest you become that which you (allegedly) abhor. |
#59
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How can I blacken stainless steel spokes?
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#60
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How can I blacken stainless steel spokes?
On May 15, 6:33*am, Hank Wirtz wrote:
On May 14, 9:56*pm, jim beam wrote: Chalo wrote: jtaylor wrote: jim beam wrote: Chalo wrote: Stainless spokes are always made of 300-series _austenitic_ stainless alloy, doctor. They don't heat treat. You can have martensitic spokes or whatever you like, but you'll have to make them yourself.. er, on deformation, they become martensitic, circus clown. that's why they're magnetic. because you /do/ know austenitic steels are not magnetic don't you? you /have/ put a magnet up against bike spokes and pondered these things haven't you? As always with the stuff "jim beam" posts, it is wise to check. First off, a quick refresher on 300-series; these are Chromium-Nickle Austentic steels - the book I grabbed uses the old SAE numbers, but the last three digits are the same; 301 has the lowest Nickle, and 325 the highest; the range is from about 6% to over 20% Nickle enhances the stainless-ness, and most importantly in the instant discussion tends to maintain the austentic structure, with the result that the steel remains non-magnetic, even after cold-working. I do not know what variety of stainless is found in the spokes I have used. And, as we know, 'jim beam" places a value on experience that far exceeds that of fact as reported by his elders and betters... ...so... ...I took a magnet - one of those good strong "super-magnets" that they put in kids building toys, and went to where the spokes are. First some spokes I pulled out of a push-bike wheel some time ago - butted, stainless, marked with a "Z" (or perhaps an "N"; depends on how you look at it). The magnet didn't attract any of them. Next some spokes on the recumbent trike; straight, stainless, marked with something that is either a shield of a thickish "U". The magnet didn't attract any of 'em. THEN, just for fun, some motor-bike spokes - a set that I built in the 70's, stainless butted spokes from Buchannan's. Not magnetic. Another set from Buchannans, not built yet; also stainless and butted - just got em a few weeks ago. Not magnetic. This of course, is not exhaustive. And cold-working can & does affect the magnetic qualities of some stainless steels; but so far, it appears that for spokes is does so to a remarkable degree only in that small part of the cycle world where the sky is a different colour and there are no shift-keys. I shouldn't even bother correcting "jim beam's" more noteworthy technical errors within his purported field of expertise. *All it nets us us more erroneous bull puckey and unwarranted abuse. But thanks for confirming what I was saying anyway. Chalo wow! q: so how many liars does it take to deceive a clown? a: none - he can deceive himself. http://i42.tinypic.com/25ez3uf.jpg of course, all the ignorati will get their panties in a bunch and shout "superglue" long before they bother to get a magnet and expose the idiocy of the famous jtaylor who apparently doesn't know what a magnet is, but hey, stupidity is not a barrier to entry on usenet.- Hide quoted text - - Show quoted text - RBT SATs time! "Andre" is to "Scum" as "jim" is to "_____" a) clown b) ignorati c) bull****ter d) all of the above Hey, Wirtzie, you know that thing that you do that makes people think you're a troll? You're doing it again. Andre Jute Charisma is the art of infuriating the undeserving by merely existing elegantly |
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