Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

[Gary B.]

Thanks,


Gary

[Thomas S.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

This is the correct packaging for the Bussman product produce back in the 60’s and 70’s. GM likely bought their fuses from either Bussman or Littelfuse because they were the two biggest suppliers to virtually everyone. I’ve been in the electronic parts distribution business since 71. The current capacity and fuse delay determined the filament style. While you can’t see it, my guess is at 4-amps, it would have a zig-zag wire and not a flat element. Would also be stamped on the end cap with visible lead solder on the cap flat surfaces

A7D52421-5C6E-468A-B8FB-268D3A53F4D3.jpgB54023A3-A1EB-49A3-AEDA-8B9680767051.jpg

[Gary B.]

solid thick metal strips, not narrow strips with a broken-jagged

[Thomas S.]

A7D52421-5C6E-468A-B8FB-268D3A53F4D3.jpg

[Thomas S.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

There definitely would have been a difference between a 15A and a 3A. At some point they went to round straight or zig-zag wire. On very low current, it would have been very thin. Coiled wire was never used on fast acting fuses. The reduction in width on a flat strip it to localize the failure to the center so you can see it. It also allowed them to use a single width flat link which could be sectioned according the amperage rating.

My comments are based on Bussman and Littelfuse products and I may not be correct in that maybe Delco made their own.

[Thomas S.]

857868EF-901B-4DE5-AB52-AF0205A48FEC.jpg

[Gary B.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)


1963 radio fuse (4 amp): 148511
1964-1966 radio fuse (2.5 & 3 amp): 9419783 (2.5 amp); AIM revision date 6-15-66, # changed to 106652 (3 amp)
1967 radio fuse (3 amp): 106652


Restorer article (Winter 2003, Vol 29 #3) by Pete Lindahl, Bill Clupper, Marvin Burnette, Brian Pearce says: 1967 radio fuse (4 amp): 148511 (non-color-coded) or 9426339 (pink)


Gary

[Gary B.]

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[Richard M.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

Thomas,

Can you guess what this description from the ‘66 JG means: “The fuses have straight solid thick metal strips,

not narrow strips with a broken-jagged pattern.”

The bold face words are directly from the JG, not my addition. The JG does not distinguish between the 15-amp vs the 3-amp internal element style. In my mind, the “straight solid metal strips” description does not allow for straight wire, spiral wire, spiral strips, or wavy strips as in your example. Does “straight” even allow for the common dog-bone design? I need help here.

Gary

Gary, maybe they're refering to these?

Sawtooth
s-l400.jpg

[Gary B.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

Rich,

I suspect you are correct. Here’s a better image of a fuse having what I call a zig-zag element. I wish the JG was more clear about which internal element geometries are period correct for C2 and which are not.

Gary

AB1BA891-9A57-4B2C-B3F2-F07ED048386B.jpg

PS. This zig-zag fuse is a Bussmann AGC 32V, 5 amp. And probably modern, not from the 60s. So for a 5-amp current limit, using whichever metal it is, the element need not be a very thin wire.

[Mark F.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

Gary (and others),

I have a few(?) vintage mid-60's or earlier Buss, Littel and one box of 5 Excello fuses (very old).
There's also a mixed bunch of unboxed ones as shown in the lower right of the photo.
I know these are old because they've been in my Dad's parts drawers since I was a kid and I probably used a few myself on my early jalopies.

If have more than one of the same fuse and you tell me what you need (length; amperage; Buss vs Littel, etc.), I'll check continuity on it and mail it too you (freebees...I'll never use all of the extras I may have ).

Fuses 2.jpg

[Gary B.]

[Mark F.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

No luck on a 4amp fuse, but I do have 3 amps...

Continuity is good on all 3 of these, but I'm guessing you need the 1-1/4" long ones; not the 1" long with label.

lemme know if you need the shorty-guy, too.
PS got your PM

3 amp DSCN8249.jpg

[Gary B.]

[Jack H.]

Re: Wanted: Close-up photo of fuse GM #148511 (prior to change to colored version)

Throwing out some of what I got...
left top is SFE 4
left btm 4A32V 3113AG

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