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pfretrock

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Posts posted by pfretrock

  1. 28 minutes ago, Bassfinger said:

    It doesnt quite work like that. The magnetic field is not a neat column rising vertically out of the pole piece.

    True, there is a broad magnetic field. Look at the P bass pole alignment.

  2. 18 hours ago, Rayman said:

    I'm after flats or tapes for a Dearmond Starfire which measures about 31" ..... so is that Short or Medium scale? 

    I got some 32 scale flat strings a few years ago from Bass Direct. I'm sure they had a webpage with actual ball to silk/taper measurements - can't find it now, perhaps it has gone. You could try them.

  3. 8 hours ago, Lozz196 said:

    Yes, a good few years ago I was in Coda Music in Stevenage and I saw a Mex Fender precision in white/rosewood, there was something about that bass that I just had to have it. I`m currently trying to resist the temptation with a bass up for grabs on here, same colour scheme.

    Did the same thing with the same bass in Birmingham. Since I'd never even picked up a bass before, it was the one I picked out from all the others, no use me trying it. I  coud not play! Tend to use an narrow neck Ibanez these days, but whenever I pick up the P , it's just Wow! Oddly I find J's hard to play, luckily I was not attracted to those in the shop.

  4. My 2013 Mex P had a curved rectangular spring under each cog,  (fender design is different now). After about 6 months a thin black plastic washer, same shape as the spring started to appear and slide out on one tuner. Eventually all 4 did this and fell out. The low E tuner then started to buzz. Tightening the screw helped a bit but it came back.  Changed to Hipshots, higher ratio easier to tune.

    • Like 2
  5. 2 hours ago, Mickyk said:

    Serious question could the Last Post be played on a Bass guitar, I have an Uncle whose son was lost in  ww2,and he's coming  round on Sunday for a Slice  a Cake and a Cuppa Tea.

    If it could ?can anyone help me out with the tabs.

     

    It's quite easy on bass, only 5 notes, you should be able to work it out from this:

     

    https://www.mfiles.co.uk/scores/the-last-post.htm

     

    If you can't read the time, listen here (number 11):

     

    https://www.householddivision.org.uk/act-of-remembrance

     

    There should be a vid of Mark Knopfler playing it on  guitar, in remembrance of The Northumberland Regiments who had huge losses in WW1.

  6. Last time I tried to log on to Amazon, they sent a verification link to my smart phone. Actually my phone is not smart (ancient technology Nokia), so I can't click or tap the link.

    That's no problem I just go to Amazon technical support to get help. They send me a link to get through to technical support....

    Almost everyone else sends a text  msg with an access code.

     

  7. 2 hours ago, baa said:

    Seems that I might have to do some trial and error...🤔

    In the original guitar humbucker the coils were wired back to back (either series or parallel) and the magnets in each bar reversed otherwise the string signal from each half would cancel out. The signal from each half are  virtually identical, but in a neck and bridge mix the signals are different so the situation is slightly different.

     

     

    Humbuck.jpg

  8. It seems that Leo thought the magnet polarities did not affect the humbucking. But clearly the magnet poles were different in each half in Fig 2 and 5.. This is a happy accident. Everyone copied his assembly.

     

    From the Patent:

     

    "Although the voltage induced in coils 41 and 44 due to vibration of an associated string 16 are additive, the violtage induced in such coils due to the effect of an extraneous field , such as that produced by a power line, are in a bucking relationship. This is because the coils 41 and 44 are reverse wound relative to each other, and the magnet polarities are not important in regard to extraneous fields"

  9. The out of phase problem can be fixed by reversing the magnets in one side of the P  to south poles. Both sides are now in phase.

    Every P I have looked at has the magnets arranged like this.

    What I'm not sure of is has it always been like this? When Leo made the first split P did he have a different polarity in each half, on the assumption that it is a requirement for matched humbucking?

    I've no idea if this is the case, or if it is a requirement.

     

    Perhaps someone with a vintage P can check this. It may be in a Patent if Fender patented this.

     

    So if you are using various  P/P configurations, you may need to check the phase is correct. I've no idea what the effect of having one half out of phase is,  I've never tried it but I suspect it could be a problem. Or it might just sound great!

    Figure-2.jpg

  10. Excuse the scruffy drawing. Here is a P and J pickup. Assuming the winding start and end is in the same direction for all windings. The P is wired back to back as required for humbucking and I've made all the magnets the same polarity. The bass side has the same magnet polarity on both pups and the wiring is the same phase. But there is a problem on the treble side. the P and J signals are out of phase.

    Figure-1.jpg

    • Like 1
  11. Then can deliver. I decided to order Geddy's bass book direct from the publisher's website store - they offered a discount which made it lower than Amazon. Supposed to be 3 days delivery. Every time I emailed over a 3 week period it was "in the warehouse due for shipping". Eventually cancelled and got a refund. Amazon delivered in 2 days. That was my last purchase.

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