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Are jazz bass necks too small?

Jazz necks are generally smaller and have a rounder profile in the back. I think the radius tends to have more curve, but I could be wrong about that.
Like P necks, there is some variation in jazz style necks. The neck on my Vitage Icon and Peavey Forum are narrower than a Fender jazz.
I can't decide if I have a preference for whuch style of neck. I think I like flatter profile necks since I have short fingers. The old school P necks are too much for me. My MIM Player P is pretty comfortable. Even though a lot of five string basses give me trouble, the thin profile neck my Pedulla Rapture has is pretty comfortable as well.
 
Are Precision necks too big? Who gives a rats patoot. There are lots of P's with jazz necks.
far less Jazz type basses with P necks. But who cares? Make it work for you. Play what feels good, to you.
Think of your Fender basses like a Hot Rod or Race car, feel free to change parts at will. Put a Jazz neck on a P. Put P neck of a Jazz nobody cares but YOU. Change the pickups and bridge. Maybe find out it was better before you started tinkering. Leo designed these basses to be modular, tear it apart, put it back, no big deal. Make your bass fit you. But It's nobody's business but yours what you play. I've got a Roadworn P neck gathering dust cause I put a Jazz neck on my RW P. Mmmmm Party on Garth.
 
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I've not read every post in this thread, so maybe it's already been mentioned, but there are significant differences even among jazz necks. 1.5" width is standard, but the front to back thickness varies. I have an Allparts "Fat Jazz" that is 1.5", but it's 1" front to back the whole way. I know "standard" jazz necks are not as thick as that, and I believe Geddy necks are even thinner. That said, under normal circumstances using reasonable gauge strings, none of them should cause setup issues unless the neck is faulty in some way.
 
Question of preference. I have large hands and fingers and always believed the hype about wider necks and wider string spacing.

I avoided Jazz necks -even on my Jazz builds. Tried a Jazz neck once, discovered I could play faster and more comfortably than I ever had before and now ONLY play Jazz necks.

I always assumed I wouldn't like smaller necks so I'd only buy basses with baseball bat necks. Then I got my SB-2 and I'm not sure I can ever go back.
 
A couple years ago, I was hankering for a good jazz bass. I had been listening to a lot of Led Zeppelin. I eventually found a used CS that I couldn’t say no to. The action is perfect. However, the truss is maxed and I had to get the saddles just right. The neck feels very small to me, I am used to classic Precision style necks and my Rick has a club for a neck, which I like btw. Talking with other bass players, it seems this is not uncommon with jazz basses. I am surprised it would happen with a CS being that they can choose the wood first etc. So are jazz necks just a bit too small or what? Is it uncommon for the truss to be maxed in a jazz neck?
First, J necks have had that thin profile since 1960. My ‘62 is a pencil. Proper left hand technique should not pose problems; but, we are all different. The thinner neck also does affect the sound and response of the bass vs the thicker Precision neck. Believe it or not, through the 70’s the more common neck swap I saw was putting the Jazz neck on the Precision. But, they are just different. Nothing wrong with having preferences.

Regarding a “maxed out truss rod:” do you mean that the adjustment nut has come to the end of the threads on the rod? If so, you can either find narrow profile washers or grind down the standard ones to regain tightening capability. Should have a good luthier do that, if needed. Shouldn’t happen, especially on a CS instrument. But, if you don’t know the history of the bass, then it could have been over tightened. No accounting for stupidity. I have never encountered a 62 neck that could not be adjusted. The main issues I’ve had have been the fret dressing profiles, which for a while tended towards a diving board up in the higher frets; nothing that a proper fret profiling couldn’t cure.

Anyhow, my suggestion is to get the bass to a good luthier. A “maxed out” truss rod is not common, but should be repairable.
 
A couple years ago, I was hankering for a good jazz bass. I had been listening to a lot of Led Zeppelin. I eventually found a used CS that I couldn’t say no to. The action is perfect. However, the truss is maxed and I had to get the saddles just right. The neck feels very small to me, I am used to classic Precision style necks and my Rick has a club for a neck, which I like btw. Talking with other bass players, it seems this is not uncommon with jazz basses. I am surprised it would happen with a CS being that they can choose the wood first etc. So are jazz necks just a bit too small or what? Is it uncommon for the truss to be maxed in a jazz neck?

?
Jazz basses have slimmer necks than Precisions. It's one of their features.

Like you, I prefer bigger necks, which is the main reason I don't use Jazz basses much. I even converted a Precision to Jazz because of that!

As for the rest... it looks like there's a problem with yours. However, before you give up on it... is the neck at the right angle? On bolt-on neck guitars, you can add a little shim to ever so slightly alter the neck angle, which can often give you the range of adjustment you need. That's assuming the truss rod works as it should. That's two separate issues.
 
A couple years ago, I was hankering for a good jazz bass. I had been listening to a lot of Led Zeppelin. I eventually found a used CS that I couldn’t say no to. The action is perfect. However, the truss is maxed and I had to get the saddles just right. The neck feels very small to me, I am used to classic Precision style necks and my Rick has a club for a neck, which I like btw. Talking with other bass players, it seems this is not uncommon with jazz basses. I am surprised it would happen with a CS being that they can choose the wood first etc. So are jazz necks just a bit too small or what? Is it uncommon for the truss to be maxed in a jazz neck?

No, but you might also ask if they are too wide at the 20th fret... really, if you like the sound, you work around it. And if that doen’t get it, for a couple of hundred bucks dial up Warmouth for a neck. People probably spend that much on beer and pizza over a couple of months....