My Charvel Model 4 - latest update

dystrust

New member
I've made several mentions of my Charvel Model 4 partscaster lately, so I decided to include a bit of a life story with this latest update.

The neck plate (247XXX) dates to late '86, and when my brother purchased the guitar in 2003 or so it looked like this except for a covered bridge pickup:

kW1ooJO.jpg


He installed a Full Shred in the bridge and played it that way for a year or so. About a year later he wanted something different, and I was able to get it from him as part of a trade (minus the FS). Around the same time I acquired an '87/'88 Model 2 that had suffered a botched refin. When I decided to strip that body I put the maple neck on this guitar and gutted the stock active electronics. I wanted something simple, so I grabbed a Cool Rails and '59 from my parts bin along with a 3-way switch and 500K volume pot. The Cool Rails was great, but the '59 was screechy and weak, so I replaced it with a Custom 5. I never liked the Jackson JT-6 behind-the nut clamp, so I ditched it in favor of Sperzel locking tuners. I also broke the original Kahler bar. This pic was taken in May 2007 with the Custom 5 and an after market bar:

HMgUnTY.jpg


In 2008 I swapped the stock Kahler with its brass cam & rollers for one with steel cam & rollers. The springs in the original bridge were shot, and I'd wanted to try an Invader in this guitar. The new bridge was significantly brighter sounding, so it balanced quite well. I played it in that configuration until 2010 sometime when I refurbished the stock bridge and reinstalled it along with a new Kahler heavy bar. The Invader didn't sound nearly as good with this bridge, so I swapped it for a zebra Custom.

I left the guitar like that for years; it played good, sounded good (if a bit bass heavy), and stayed in tune OK. Last year I swapped the stock graphite nut for TUSQ-XL in hope of improving the tuning stability, but the headstock angle was too steep for it to help much. My last resort was to swap necks with my Model 1A and install a locking nut. I'd originally planned to use a Floyd Rose nut, but changed my mind when I found something that seemed more suitable:

CA3SbeO.jpg


That is a Kahler 5521 locking nut. It has a 12" radius which matches the neck instead of Schaller's 10" or Gotoh's 17"; it also can be unlocked with a coin in place of the usual hex wrench. Here's what my tech had to say about it:
BrianS said:
Got the nut yesterday. After seeing how low it was, I had to change my plan a bit...not a bad thing. The shelf needed to be made higher, so I used a piece of solid maple veneer the same size of the nut's footprint as a shim. Where it stuck out over the angle of the headstock, I ended up making some little wedges out of rosewood and glued them to the shim.

So, the shim/wedge piece is glued to the old nut shelf, not the painted part of the headstock. I found that after I secured the nut to the shim/neck, everything was rock solid without having to glue anything to the painted portion. As it is, the "mod"is 100% reversible. I know this is not your primary concern, but as a repair tech, this makes me feel good about the work.

I also dyed the edges of the shim/wedge black. It's pretty unobtrusive looking. That Kahler nut was the way to go. That little part that angles the strings down to the tuners works very well.

This locknut is great; the tuning is rock solid and it's definitely worth the small premium over a Floyd nut IMO. I wanted the zebra Custom in this guitar for my Explorer, so I put the old Custom 5 back, but not before swapping the magnet to an A2. The Custom Custom is amazing in this guitar; it still sounds big but not overly bassy like the Custom or too bright like the Custom 5. Here's what it looks like now, complete with the Kahler heavy bar:

kOnvihB.jpg


The only downside to Kahlers is that you need to either solder the ball ends of your strings, or buy them reinforced. It had been so long since I actually used the bar that I forgot; the ball popped off the high E after less than an hour of play. A box of reinforced D'Addario 10s is on its way.
 
Re: My Charvel Model 4 - latest update

Wow, glad you got it back going. I HATE the behind the nut Kahler locking and have been wanting to put on Floyd nut on mine for awhile, looks like I will go with the 5521 when the time comes as well.

Any close ups of the shelf? sounds like you tech knows his stuff.
 
Re: My Charvel Model 4 - latest update

Wow, glad you got it back going. I HATE the behind the nut Kahler locking and have been wanting to put on Floyd nut on mine for awhile, looks like I will go with the 5521 when the time comes as well.

Any close ups of the shelf? sounds like you tech knows his stuff.

I'll try to snap some later today, but it's pretty hard to see it.
 
Re: My Charvel Model 4 - latest update

The best picture I have is this one; I've marked both the shim and the wedge supporting it:

nboMyWj.jpg


This pic isn't that great, but you can see how the shim and wedges allow access to the truss rod:

iYfEYWK.jpg
 
Re: My Charvel Model 4 - latest update

Tech did a great job!! Ive always wanted a Black Cherry model 4 and Model 6. I had 2 black model 4s but sold them.. :(
 
Re: My Charvel Model 4 - latest update

Those Kahler 5521's are really well engineered parts and they have some weight to them. I have two of them on my guitars, one on a floyd equipped and the other one on an Accutune bridge, which is more or less a Kahler copy.
I like how those nuts are top or bottom mount, which was an awesome design way ahead of their time. (OFR nuts are now available like that.) One of mine have lock nut screws like yours and have a straight slot and I use a nickel to loosen it. My other one has a straight slots as well as a hex machined into it to utilize a regular 3mm allen wrench.
Mine came from a 1990 Charvel 3dr (good source for these nuts)
I also like the built in string tree like your tech mentioned to you. Thats an innovative design that shouldve caught on. Eliminates everything after it.

Nice how your guitar came full circle after all this time, and I think it turned out great man thanks for sharing this with us!
 
Last edited:
Re: My Charvel Model 4 - latest update

Those Kahler 5521's are really well engineered parts and they have some weight to them. I have two of them on my guitars, one on a floyd equipped and the other one on an Accutune bridge, which is more or less a Kahler copy.
I like how those nuts are top or bottom mount, which was an awesome design way ahead of their time. (OFR nuts are now available like that.) One of mine have lock nut screws like yours and have a straight slot and I use a nickel to loosen it. My other one has a straight slots as well as a hex machined into it to utilize a regular 3mm allen wrench.
Mine came from a 1990 Charvel 3dr (good source for these nuts)
I also like the built in string tree like your tech mentioned to you. Thats an innovative design that shouldve caught on. Eliminates everything after it.

Nice how your guitar came full circle after all this time, and I think it turned out great man thanks for sharing this with us!

I don't know how visible it is, but my 5521 has hex screws and straight slots. I usually use either a coin or flathead screwdriver since they're more convenient than finding a hex wrench.

I couldn't really figure out what everyone meant at first, but I suppose it has come full circle. The 2005-2008 configuration was great, I just wasn't completely happy with the tuning stability or the tone of the bridge pickup. The Custom 5 sounded good generally speaking, but it was just too bright and thin when playing higher up the neck. I wasn't 100% sure the Custom Custom was going to work, but those first notes through my Lead 12 just blew me away. It only got better when I put it through a 'real' amp.
 
Re: My Charvel Model 4 - latest update

You know all this time I have never once tried anything in the Custom family, but more and more lately Ive been wanting to try the Custom because its looks great on paper and I think I would be able to get down with that pickup very much because of the ceramic. The only basswood body I have is my RG, and its good to go as is and Ive never been happier with it, however that being said I was reading into why you went with an A2 Custom and I will def keep that one in mind as well should I experience what you did with you Model-4's brightness on the upper register. Ive never tried an A2 in the bridge but once again, it looks good on paper and obviously has it uses.

So awesome that you were able to freshen it up with that pup swap and walk away satisifed. I dont know about you, but sometimes a simple pickup swap literally makes it into a new guitar and blows me away. Not all the time mind you cause lot of times I know what o expect but its those ones every once in a while that really floor you which sounds like thats what happened here.
My Pacer Deluxe is a F'n beast now since I swapped in that vintage Full Shred recently, so Im like you at the moment and riding high because of it.
Good stuff, thanks for sharing this.
 
Re: My Charvel Model 4 - latest update

You know all this time I have never once tried anything in the Custom family, but more and more lately Ive been wanting to try the Custom because its looks great on paper and I think I would be able to get down with that pickup very much because of the ceramic. The only basswood body I have is my RG, and its good to go as is and Ive never been happier with it, however that being said I was reading into why you went with an A2 Custom and I will def keep that one in mind as well should I experience what you did with you Model-4's brightness on the upper register. Ive never tried an A2 in the bridge but once again, it looks good on paper and obviously has it uses.

So awesome that you were able to freshen it up with that pup swap and walk away satisifed. I dont know about you, but sometimes a simple pickup swap literally makes it into a new guitar and blows me away. Not all the time mind you cause lot of times I know what o expect but its those ones every once in a while that really floor you which sounds like thats what happened here.
My Pacer Deluxe is a F'n beast now since I swapped in that vintage Full Shred recently, so Im like you at the moment and riding high because of it.
Good stuff, thanks for sharing this.

The Custom is a great pickup; it may even be my favorite SD, though it doesn't work in everything. It's great in my Explorer, but was a bit bass heavy in both the Model 4 and my Les Paul Standard. I really can't stand the Custom 5; lots of people love it, but I hear scooped and shrill. The closest I've coming to liking it was in the Model 4, but it was still too bright and not full enough in the upper register.

Generally speaking I don't like A2s, but they just seem to work in a bridge humbucker with 25.5" scale. The highs have a really nice, smooth quality to them while the longer scale helps to tighten the loose bass just enough. I was only able to play the CC for about an hour before the high E popped, so I don't have a lot of experience with it yet. The Model 4 sounded by far the best it ever has, so I'm patiently (not really) waiting for my reinforced strings to give it another go.

I have quite a bit more experience with the '78/EVH that came stock in my 25th Anniversary Charvel reissue. That pickup is awesome and I really wish it were available for less than $140-160. It gave the Charvel 25th this cool chimey high end almost like a good 335, and it was wound just hot enough to really fill out the mids. If you're looking for something PAF-like for a Strat bridge, I've yet to come across anything better. It also sounds pretty cool in a Les Paul, though it wouldn't be my first choice.
 
Re: My Charvel Model 4 - latest update

I'm just gunna chime in since I recently replaced the J90C on my Model 1 to a Custom.

It had been awhile since I had a custom, and it reminded me how much I like it. It does work great in this guitar, however, it depends on what you are trying to achieve. In comparison to the J90C, I lost some nice bite, and certainly some output, but gained clarity and a bit of girth. It wasn't any better or worse, just different. So take that as you will. I am considering trying a A2 or A8 in there though just for fun.
 
Re: My Charvel Model 4 - latest update

This is way off topic but you guys may find interesting so ill share it anyways. I was looking through some old notebooks and found some specs for the old Jackson pickups.
J90 - 15.93k ceramic (Model - 1,2,3)
J80 - 13k ceramic (Model - 3A,5)
J50 - 11.65k ceramic (Model - 4,6)

Single coils:
J100 - 6.10k (Model - 1A, 3)
J200 - 8.58k (Model - 4, 6)
 
Re: My Charvel Model 4 - latest update

This is way off topic but you guys may find interesting so ill share it anyways. I was looking through some old notebooks and found some specs for the old Jackson pickups.
J90 - 15.93k ceramic (Model - 1,2,3)
J80 - 13k ceramic (Model - 3A,5)
J50 - 11.65k ceramic (Model - 4,6)

Single coils:
J100 - 6.10k (Model - 1A, 3)
J200 - 8.58k (Model - 4, 6)

I've heard that the J50, J80, and J90 are available with both alnico and ceramic magnets and that the ceramic version have a 'C' added to the model; also that the J50 is available in both neck and bridge versions. The one described in your post would be a J50BC; bridge version with a ceramic magnet. I've also heard that the J100 is a true single while the J200 was supposed to be a stack. Does anyone know for sure? I have a couple J200s in a box somewhere and they're pretty tall, but I'm not sure those covers come off. I also don't remember if the wiring was 2 or 4 conductor.
 
Re: My Charvel Model 4 - latest update

Yea on my list it said J90C, J80C, J50C, etc.. i left the letter out cause its been a while since I wrote that down (2003), but yea I believe they were avail as a ceramic or alnico mag as you said.
The J200 isnt a stacked pickup as far as I know, however its plausible considering the guitars they were in and their more complicated electronic compared to other models.
The J200 had exposed poles with a removable cover and the J100 had a plastic cover like an EMG.

My apologies on the slight derail, for real! Haha

At any rate, you have me looking for a vintage Zebra Custom for my Kramer Imperial! (Id also need a Zebra 59 as well so they match up visually) Have you or anyone else tried a 59/Custom? (in a similar guitar for a similar style of music) Thats another one thats catching my eye, as well as an Alternative-8, (although im trying to use parts that were available in 1987).

This is all a jumbled mess, I just woke up but I did have more questions and a better line of thought on this. Haha ill revisit later after work when Im thinking better. Thanks
 
Re: My Charvel Model 4 - latest update

At any rate, you have me looking for a vintage Zebra Custom for my Kramer Imperial! (Id also need a Zebra 59 as well so they match up visually) Have you or anyone else tried a 59/Custom? (in a similar guitar for a similar style of music) Thats another one thats catching my eye, as well as an Alternative-8, (although im trying to use parts that were available in 1987).

zNz8Ugy.jpg


This is where my zebra Custom ended up. Unless you're set on a '59, I strongly recommend going with a Jazz instead for the extra versatility. If you have a tone control it gets close enough to '59 territory when rolled off slightly. While I'm not 100% sure on my favorite SD overall, the Jazz is definitely my favorite humbucker for the neck position.
 
Re: My Charvel Model 4 - latest update

The best picture I have is this one; I've marked both the shim and the wedge supporting it:

nboMyWj.jpg


This pic isn't that great, but you can see how the shim and wedges allow access to the truss rod:

iYfEYWK.jpg


What the?? Isnt that waaaaay too high?
 
Re: My Charvel Model 4 - latest update

What the?? Isnt that waaaaay too high?

Just saw this now...

In terms of absolute height it isn't any taller than a typical Floyd nut; the locknut itself is actually shorter than a Floyd nut. The Kahler nut looks taller because of the headstock angle and the different locking mechanism compared to a Floyd nut.
 
Re: My Charvel Model 4 - latest update

Just saw this now...

In terms of absolute height it isn't any taller than a typical Floyd nut; the locknut itself is actually shorter than a Floyd nut. The Kahler nut looks taller because of the headstock angle and the different locking mechanism compared to a Floyd nut.

N/m mind played a trick on me, looked like the overlay was the fretboard and the fretboard was the headstock
 
Re: My Charvel Model 4 - latest update

What the?? Isnt that waaaaay too high?

Going through this now with my '87 Model 4. Originally had a Kahler, I had it swapped out for a Floyd. I can see why these guitars didn't have Floyd nuts. If the Floyd nut is top mounted, the screw holes are extremely close to the truss rod cavity and are not solid enough to hold the nut without additional shims and glue etc. The guy who originally did mine used tiny screws that barely fit to mount it. No wonder I stated to have tuning issues years later.
Anyway, how is the spacing on this as far as how the nut screws sit outside the truss rod cavity? I may have to get one of these, and actually wouldn't mind the coin slot screws. The other Kahler clamp screws are smaller than the 3mm Floyds.
Thanks!
 
Back
Top