Help! NGD JP and tremolo problem

[PaoloGilberto]

hi ,

I just received my JP 7,

it has a strange problem and as I tried to figure it out it is something about the tremolo arm and its "pocket"
looks like it is not sitting right, even if tightening the arm from the little screw on the tremolo solid block bar the sound is the same
changed the arm with the arm from my JP 6 and the same, put the arm from the JP7 on the JP6 and the JP6 has that sound then, so it must be the tremolo arm.
doesn't look to be the knife edges or the back springs for sure, because if I block the tremolo it is the same sound and the tremolo arm moves a little

see the video pls.

I know there are 3 screws in the tremolo block from where you can make some adjustments for the tremolo bar.
can someone help me on this?

 

[Spudmurphy]

I've just spent 20 minutes or so trying to find via the search, a great photo of the trem block that I believe was originally posted by Pete Dubaldo. It shows the positioning of the various adjustment screws on the trem block. The really small screw that you can access just by raising the trem (by pulling up on the term bar) will just alter the swing on the arm. e.g you can have it tight so that when you release the trem bar it stays where it is. Or you can have it loose, so that when you release the arm it will swing back via gravity. that screw is NOT the one you want to adjust. It sounds to me that the trem bar is fitting with a bit of slack into the trem block. The screw you need to try tightening is situated by a spring clip (small metal bar) that grips into the recess, milled into the end of the trem bar itself. I would try tightening that one to see if it cures the problem and takes up any slack. Maybe someone knows where that photo is, and if it's posted I can make myself a bit clearer?
Anyway be sure to let us know how you get on with this?

 

[PaoloGilberto]

many thanks for the reply Spud
you nailed it and described it perfectly : "the trem bar is fitting with a bit of slack into the trem block"
english as you can see is not my native tongue I apologize

but that slack is not at the end of the tremolo bar, where that second screw touches the end of the bar ...it is more concerning the diameter of the tremolo arm...the hole is too large
I know that the screw mentioned by me just alters the swing of the arm. If I tighten a little bit more this one tre arm seems to stop that move in the tremolo block, but on my JP6 even with the tremolo arm totally loose the is no slack at all , fits perfectly
I have already adjusted the second screw you are talking about, not much was changed
there is a third screw in the tremolo block , I don't know for sure what that does...you can't access it if not removing the tremolo as I see
this third bigger screw situated on the side of the tremolo block only has to do with that little bar inside the tremolo block with presses against the arm as far as my judgment, right?

 

[Spudmurphy]

Hi Paulo.
The screw I'm on about is only accessible when the trem block is out, and cannot be made in situ.
I'll check back later and see if someone can post that picture of the JP trem block. In the meantime give CS an e mail and see what they say?

 

[PaoloGilberto]

I'll give CS an email of course, this was just posted maybe can faster help on this
which screw are you talking about : screw 2?
the first adjusts how loose the arm will be , second is the one you are referring I think - touching the end of the tremolo arm when inserted and the third is the one I was asking about



PS: how can I email CS , on the music man site you have the option only to call them as I see
thanks

 

[Spudmurphy]

ok, just got back to the hotel, and I'm having another look at this.

The screw I'm referring to is the one in picture 3. But one thing is puzzling me, however I would prefer to see picture 3 from a better angle (a front on picture). I can't see the spring clip that fits in the slot in the brass block? This clip latches into the slot that is milled into the base of the trem bar. If it was missing that that would case problems.

Why not pm petedubaldo? - refer him to this thread and ask him if he still has the photo showing the JP brass trem block and screws?

The customer service e mail address is
[email protected]

 

[PaoloGilberto]

I understand now Spud, I checked that spring clip (small metal bar) is there
so that screw is supposed to do this? to adjust the slack of the arm in the tremolo bar? has other function?
I am not sure I will be able to adjust that screw if not removing all tremolo out of the guitar.
I think though it might be possible just by holding down the tremolo to have some extra space between the guitar body wood and the tremolo block in order to adjust that screw...
I'll check tomorrow
thank you very very much

 

[Spudmurphy]

Ok, so I'm glad that the bar is there. I'm determined to find that photo I was on about. So I'm gonna spend 15 mins looking for it.
Be right back

 

[PaoloGilberto]

I know the picture you are talking about, but can't find it either )
I think I have it on my office laptop, I'll check tomorrow
so is that screw only to adjust the slack of the arm in the tremolo bar? has other function?
thanks ,
have a nice evening

 

[Spudmurphy]

Found it!!!

It's here
http://www.tremol-no.com/images/EBMMJPM/ebmmTREMblockBACK1.jpg

You need to ensure that screw B is tight enough so that the trem arm is a snug fit when snapped into place in the trem block. Any slack may be the cause of your problem?

 

[PaoloGilberto]

Spud thanks again very very much for all the effort
I wrote EB CS and sent them this pic and asked about your solution/suggestion
I will wait for the reply and let you know what I did