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Double Cotton-Covered Wire - where to obtain?
Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would
like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave |
David Forsyth wrote:
Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave Both belden and Alpha made it, so I would start with Newark, Allied, or another large OEM distributor. Also, see if there is a motor rewinding shop in your area that might use it on small motors. You might pick up a partial spool at a decent price. -- Michael A. Terrell Central Florida |
David Forsyth wrote:
Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave Both belden and Alpha made it, so I would start with Newark, Allied, or another large OEM distributor. Also, see if there is a motor rewinding shop in your area that might use it on small motors. You might pick up a partial spool at a decent price. -- Michael A. Terrell Central Florida |
In article , "Michael A. Terrell"
writes: David Forsyth wrote: Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave Both belden and Alpha made it, so I would start with Newark, Allied, or another large OEM distributor. Also, see if there is a motor rewinding shop in your area that might use it on small motors. You might pick up a partial spool at a decent price. I don't think that Belden or Alpha has made that kind of wire for at least 2 decades. Got both of their big factory catalogs here and all I find is "magnet wire" in either light or heavy (two coat) plastic insulation. My new Mouser catalog has only part of two pages with "magnet wire," both being the equivalent to old "enamel covered coil wire." Might try the search engine at Digi-Key, but I doubt there will be any success. Last I was at a place that rewound electric motors was 8 years ago and they had only heavy plastic covered "magnet wire." The old cotton-coverd coil wire was okay 4 to 5 decades ago but doesn't offer much for coil building except for the cotton insulation being excellent to absorb shellac that will dry and hold everything together very nicely. Actually, back in the old days, a ceresin wax application was more likely to be applied...dried quicker and moved the product through production faster. I happen to like McCloskey "Gym-Seal" floor varnish to coat home-wound inductors, solenoidal to toroidal...it's all petroleum-based, not a polyurethane, and doesn't come loose in high moisture environments like some polyurethanes. "Gym-Seal" seems to stick to polyester and polyamide magnet wire coatings very well. There's a slight difference in distributed capacity between DCC and enameled wire, DCC usually being slightly less (any coating applied over it will change that to not less). Not enough distributed capacity to worry about in my estimation. There's a slight difference in inductance for a given coil form dimension between DCC and enamel-covered, the DCC having slightly less for the same number of turns. Again, not enough to worry about. Len Anderson retired (from regular hours) electronic engineer person |
In article , "Michael A. Terrell"
writes: David Forsyth wrote: Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave Both belden and Alpha made it, so I would start with Newark, Allied, or another large OEM distributor. Also, see if there is a motor rewinding shop in your area that might use it on small motors. You might pick up a partial spool at a decent price. I don't think that Belden or Alpha has made that kind of wire for at least 2 decades. Got both of their big factory catalogs here and all I find is "magnet wire" in either light or heavy (two coat) plastic insulation. My new Mouser catalog has only part of two pages with "magnet wire," both being the equivalent to old "enamel covered coil wire." Might try the search engine at Digi-Key, but I doubt there will be any success. Last I was at a place that rewound electric motors was 8 years ago and they had only heavy plastic covered "magnet wire." The old cotton-coverd coil wire was okay 4 to 5 decades ago but doesn't offer much for coil building except for the cotton insulation being excellent to absorb shellac that will dry and hold everything together very nicely. Actually, back in the old days, a ceresin wax application was more likely to be applied...dried quicker and moved the product through production faster. I happen to like McCloskey "Gym-Seal" floor varnish to coat home-wound inductors, solenoidal to toroidal...it's all petroleum-based, not a polyurethane, and doesn't come loose in high moisture environments like some polyurethanes. "Gym-Seal" seems to stick to polyester and polyamide magnet wire coatings very well. There's a slight difference in distributed capacity between DCC and enameled wire, DCC usually being slightly less (any coating applied over it will change that to not less). Not enough distributed capacity to worry about in my estimation. There's a slight difference in inductance for a given coil form dimension between DCC and enamel-covered, the DCC having slightly less for the same number of turns. Again, not enough to worry about. Len Anderson retired (from regular hours) electronic engineer person |
Avery Fineman wrote:
In article , "Michael A. Terrell" writes: David Forsyth wrote: Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave Both belden and Alpha made it, so I would start with Newark, Allied, or another large OEM distributor. Also, see if there is a motor rewinding shop in your area that might use it on small motors. You might pick up a partial spool at a decent price. I don't think that Belden or Alpha has made that kind of wire for at least 2 decades. Got both of their big factory catalogs here and all I find is "magnet wire" in either light or heavy (two coat) plastic insulation. My new Mouser catalog has only part of two pages with "magnet wire," both being the equivalent to old "enamel covered coil wire." Might try the search engine at Digi-Key, but I doubt there will be any success. Last I was at a place that rewound electric motors was 8 years ago and they had only heavy plastic covered "magnet wire." The old cotton-coverd coil wire was okay 4 to 5 decades ago but doesn't offer much for coil building except for the cotton insulation being excellent to absorb shellac that will dry and hold everything together very nicely. Actually, back in the old days, a ceresin wax application was more likely to be applied...dried quicker and moved the product through production faster. I happen to like McCloskey "Gym-Seal" floor varnish to coat home-wound inductors, solenoidal to toroidal...it's all petroleum-based, not a polyurethane, and doesn't come loose in high moisture environments like some polyurethanes. "Gym-Seal" seems to stick to polyester and polyamide magnet wire coatings very well. There's a slight difference in distributed capacity between DCC and enameled wire, DCC usually being slightly less (any coating applied over it will change that to not less). Not enough distributed capacity to worry about in my estimation. There's a slight difference in inductance for a given coil form dimension between DCC and enamel-covered, the DCC having slightly less for the same number of turns. Again, not enough to worry about. Len Anderson retired (from regular hours) electronic engineer person The last cotton covered wire I used was around 1970. I bought a large spool surplus to make a bunch of heavy duty degaussing coils for early color TV sets. 300 turns of 17 AWG DCC, double enameled wire that was surplused by Picker X-ray, and sold to Mendelson's, in Dayton Ohio. They had hundreds of partial spools, and I think they still had some in 1987, (The last time I was at their store in Dayton, Ohio) It was still listed in the last belden and Alpha catalogs I received, but I would have to dig them out to get the dates. -- Michael A. Terrell Central Florida |
Avery Fineman wrote:
In article , "Michael A. Terrell" writes: David Forsyth wrote: Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? thanks, Dave Both belden and Alpha made it, so I would start with Newark, Allied, or another large OEM distributor. Also, see if there is a motor rewinding shop in your area that might use it on small motors. You might pick up a partial spool at a decent price. I don't think that Belden or Alpha has made that kind of wire for at least 2 decades. Got both of their big factory catalogs here and all I find is "magnet wire" in either light or heavy (two coat) plastic insulation. My new Mouser catalog has only part of two pages with "magnet wire," both being the equivalent to old "enamel covered coil wire." Might try the search engine at Digi-Key, but I doubt there will be any success. Last I was at a place that rewound electric motors was 8 years ago and they had only heavy plastic covered "magnet wire." The old cotton-coverd coil wire was okay 4 to 5 decades ago but doesn't offer much for coil building except for the cotton insulation being excellent to absorb shellac that will dry and hold everything together very nicely. Actually, back in the old days, a ceresin wax application was more likely to be applied...dried quicker and moved the product through production faster. I happen to like McCloskey "Gym-Seal" floor varnish to coat home-wound inductors, solenoidal to toroidal...it's all petroleum-based, not a polyurethane, and doesn't come loose in high moisture environments like some polyurethanes. "Gym-Seal" seems to stick to polyester and polyamide magnet wire coatings very well. There's a slight difference in distributed capacity between DCC and enameled wire, DCC usually being slightly less (any coating applied over it will change that to not less). Not enough distributed capacity to worry about in my estimation. There's a slight difference in inductance for a given coil form dimension between DCC and enamel-covered, the DCC having slightly less for the same number of turns. Again, not enough to worry about. Len Anderson retired (from regular hours) electronic engineer person The last cotton covered wire I used was around 1970. I bought a large spool surplus to make a bunch of heavy duty degaussing coils for early color TV sets. 300 turns of 17 AWG DCC, double enameled wire that was surplused by Picker X-ray, and sold to Mendelson's, in Dayton Ohio. They had hundreds of partial spools, and I think they still had some in 1987, (The last time I was at their store in Dayton, Ohio) It was still listed in the last belden and Alpha catalogs I received, but I would have to dig them out to get the dates. -- Michael A. Terrell Central Florida |
"BFoelsch" wrote in message ... For disbelievers, I have posted a photo over on alt.binaries.pictures.radio showing a miniscule section of a 1972 vintage pipe organ relay with hundreds of conductors of white DCC conductors. Tell me about it!! Back in the 1950s I helped restore a pipe organ that was removed from a movie theater. The guy removing it just wanted to scrap the pipes for their metal, but died shortly after he started the process. A friend got it free, just for getting it out of there. This was a four manual Wurlitzer. All the cable bundles had been cut with an axe!! It took a whole summer to buzz out *thousands* of wires and get two ranks of pipes playing on two manuals. 73, John - K6QQ |
"BFoelsch" wrote in message ... For disbelievers, I have posted a photo over on alt.binaries.pictures.radio showing a miniscule section of a 1972 vintage pipe organ relay with hundreds of conductors of white DCC conductors. Tell me about it!! Back in the 1950s I helped restore a pipe organ that was removed from a movie theater. The guy removing it just wanted to scrap the pipes for their metal, but died shortly after he started the process. A friend got it free, just for getting it out of there. This was a four manual Wurlitzer. All the cable bundles had been cut with an axe!! It took a whole summer to buzz out *thousands* of wires and get two ranks of pipes playing on two manuals. 73, John - K6QQ |
Double Cotton-Covered ("D.C.C.") Do they still make this stuff? I would
like to obtain some for winding RF coils for homebrew radio receivers. Anybody know of a supplier or maybe have some on hand? Both Radio Daze (www.radiodaze.com) and Antique Electronic Supply (www.tubesandmore.com) list cotton-covered wire in their catalogs for radio restoration. |
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