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I am attempting to re-construct a Musicman Sabre II guitar. The pickups and active electronics were gutted in favor of some high wind early DiMarzio(?) pickups. I already built the active preamp so I'm down to the pickups.
The original pickups that I need to wind appear to be one of Leo Fender's early experiments after leaving Fender. They were apparently low wind with a larger gauge wire from the anecdotal stuff I hear. Two single coils for each pickup were arranged side-by-side and connected in parallel, humbucking (coils had N-S and CW-CCW wind). The pole pieces were bigger: 0.250" dia, 6 for each coil.
The coils were hooked up in parallel and have the following measurments: Rdc ~1.8K L(120hz) ~1.85H L(1Khz) ~1H resonant at ~14Khz
(technical measurements on the Sabre pickups from UIUC at:
http://online.physics.uiuc.edu/cours...ickup_Data.xls (lines 488-489).
I don't have a set to copy so I am only able to go off of the data from UIUC, some pickup cover dimension from a Stingray (previous model guitar) and the cutout holes in the guitar body. I can recreate most of the dimensions, etc. but I am lacking two critical pieces of information:
1. Length of pole pieces (I think 5/8")
2. Wire gauge (I think #41 heavy Formvar, could be as large as #39)
I can get the number of turns from the Rdc if I know the gauge but it is going to be expensive to wind pickups with #39, #40 and #41 to see which one gives the correct inductance for the proper Rdc.
Any ideas or anyone with specs on these pickups? I am about to order the pole pieces so a confirmation on the length would be great. BTW, does $0.80 per, quant >100, cast Alnico 0.250"x0.625" sound right?
Any thoughts on wire gauge? I have been trying inductance equations and simulators (Fasthenry) without a lot of luck. They don't look like they were designed for high wind coils.
Thanks in advance for the help...
John
The original pickups that I need to wind appear to be one of Leo Fender's early experiments after leaving Fender. They were apparently low wind with a larger gauge wire from the anecdotal stuff I hear. Two single coils for each pickup were arranged side-by-side and connected in parallel, humbucking (coils had N-S and CW-CCW wind). The pole pieces were bigger: 0.250" dia, 6 for each coil.
The coils were hooked up in parallel and have the following measurments: Rdc ~1.8K L(120hz) ~1.85H L(1Khz) ~1H resonant at ~14Khz
(technical measurements on the Sabre pickups from UIUC at:
http://online.physics.uiuc.edu/cours...ickup_Data.xls (lines 488-489).
I don't have a set to copy so I am only able to go off of the data from UIUC, some pickup cover dimension from a Stingray (previous model guitar) and the cutout holes in the guitar body. I can recreate most of the dimensions, etc. but I am lacking two critical pieces of information:
1. Length of pole pieces (I think 5/8")
2. Wire gauge (I think #41 heavy Formvar, could be as large as #39)
I can get the number of turns from the Rdc if I know the gauge but it is going to be expensive to wind pickups with #39, #40 and #41 to see which one gives the correct inductance for the proper Rdc.
Any ideas or anyone with specs on these pickups? I am about to order the pole pieces so a confirmation on the length would be great. BTW, does $0.80 per, quant >100, cast Alnico 0.250"x0.625" sound right?
Any thoughts on wire gauge? I have been trying inductance equations and simulators (Fasthenry) without a lot of luck. They don't look like they were designed for high wind coils.
Thanks in advance for the help...
John