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Jazzmaster trem lock system?
Posted: Wed Jul 02, 2008 7:24 am
by roachello
Can someone educate me on the purpose of a jazzmaster's tremolo lock? How does it work and what is it used for? Thank you
Posted: Wed Jul 02, 2008 7:29 am
by Mike
I never understood this on mine when I had it either.
Posted: Wed Jul 02, 2008 7:30 am
by tribi9
Check this link out.
Click me!
Posted: Wed Jul 02, 2008 7:33 am
by Hurb
you set up the trem so that the button slides in between the two plates when your in tune. being that its floating, if you snap a string all the strings go out of tune. the idea is that if you put the button in between the 2 plates it brings you back into tune to finish the song.
Posted: Wed Jul 02, 2008 7:36 am
by Mike
Nice link tribi and nice explanation Hurb. I think mine was set up too loose like this, because mine just slid around.

Posted: Wed Jul 02, 2008 8:26 am
by timhulio
This was from the olden days when strings were really expensive and folks didn't take backup guitars to gigs.
Maybe the trem lock could save your ass mid-song actually, but it is a fiddly bugger.
Posted: Wed Jul 02, 2008 9:33 am
by benecol
I don't find it fiddly - it's also a handy as a midpoint in the trem's travel, a way of having something to navigate back to, trem wise (ie. you adjust spring tension 'til the tremloc works - this means you'll always have some up play and some down play on the trem). Also, it saves a lot of grief when restringing, if you take all the strings off.
Posted: Wed Jul 02, 2008 12:13 pm
by finboy
i'm still looking for somewhere that sells just the lock, as mine came without one
i think i might just end up going with a nut/bolt that is the same height, ghetto but useful for altered tunings.
Posted: Wed Jul 02, 2008 12:22 pm
by Doog
Never used it, but I have my trem set fairly tight.
Plus I've never broken a string live. Well.. guitar string.
Posted: Fri Jul 04, 2008 8:36 am
by timhulio
A nice chap has just emailed me scans of the 1959 Jazzmaster manual on how to set this up...
Thanks RJ-MJ!

Posted: Fri Jul 04, 2008 9:06 am
by Doog
Bridge bars!
Posted: Sat Jul 05, 2008 10:31 am
by TheBurbz
Mine doesn't work

when I engage the lock, the button is sitting right on the edge of the plate by only 1mm so it just slips out. Maybe a bigger button is needed.
Posted: Sat Jul 05, 2008 10:37 am
by Hurb
does you have vintage or avri ? I can't remember.
Posted: Sat Jul 05, 2008 1:32 pm
by TheBurbz
I mean the one on my CIJ Jag, the tremolo itself is great but the button just slips out.
Posted: Sat Jul 05, 2008 3:06 pm
by Hurb
It should work really... you can tighten the button it's self if its a bit loose.
Posted: Mon Jul 07, 2008 6:07 am
by light rail coyote
the little screw right below the button adjusts the the spring tention so the plate sits perfectly over the botton if it's slid in or out. I use mine all the time and it helps if you have to tune to drop D or anything like that. just another thing you have to spend a whole 5 minutes setting up to get it to work right
Posted: Mon Jul 07, 2008 6:54 am
by robert(original)
nick in sirens has been using my tele with an avri trem on it,
he asked me the same thing cept i told him it was basically a nice way to garentee that if a string breaks it won't go out of tune.
ever since then he has engaged it everytime he plays it.