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4001 Truss Rod Covers

Posted: Wed May 23, 2012 10:42 am
by spongebob
Little query on the changes on the Truss Rod Covers on the 4001.

Got a '78 that has the 'raised' lettering on the TRC.

Just picked up a '77 that has a flat TRC, ie no raised lettering.

Was there an exact point in time when the style changed? Or did they just vary throughout the lifespan of the 4001?

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 10:44 am
by cjj
My '76 has raised letter, my '74 had plexi...

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 10:46 am
by sloop_john_b
Very early '76 IIRC. Check out a few examples on the Register here - you can probably pin it down quickly.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 11:16 am
by walrus
I think it was May of '75 or was that for the movement of the neck pickup?

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 11:18 am
by spongebob
I've looked at some on the register, and there seems to be a crossover.

Some '77's have the plexi-style, but some 76's are sporting the newer 'raised' type.

Maybe they just fitted what was to hand until supply ran out! :D

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 11:24 am
by cjj
That generally seems to be the way things have been done over the years, thus a lot of crossovers and no definitive dates for any sort of changes...

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 11:25 am
by BAD RONBO, KiLLeR DWaRfS
mid '75 i'd say with some bleed over with the 1" spacing change over.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 1:51 pm
by glking14
my 71 has smooth lettering

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 3:11 pm
by antonius
My May 1975 4001 has the smooth plexi style.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 3:19 pm
by Seans
My July 75 4080 has plexi, but most unusual they're white not black.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 3:20 pm
by fran4001
Plexi in '77, really? That's a surprise. :shock:

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 4:10 pm
by BAD RONBO, KiLLeR DWaRfS
could have been replaced between then and now.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 5:04 pm
by fran4001
Exactly! Not original being the point though.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 7:06 pm
by johnallg
BAD RONBO, KiLLeR DWaRfS wrote:mid '75 i'd say with some bleed over with the 1" spacing change over.
My late '75 has 1" spacing and a plexi TRC.

Re: 4001 Truss Rod Covers

Posted: Wed May 23, 2012 11:10 pm
by BAD RONBO, KiLLeR DWaRfS
thing is with these basses...unless you bought it new back then, anything could have been changed out at some point, so you'll never really know if it was originally equipped with a plexi or not.