Tech/maintenance The two adjustment screws

AlonW

Formerly LionCrown
Messages
194
I changed the positions of the two adjustment screws on my tenor (the ones by G and F) and couldn’t get it back to normal. It was fine before I messed with it, I should never have done this. Is there any easy way to explain to how these work so I can reset them myself or do I have to call my tech again?
 
Back them both out. Leak light in the body. Then close F or E and press pinky G#. Turn the screw over G# cup back in until G# is just gently closing.
Press F or E again and hit G# on & off. See if G# leaks.

Next press F or E. Look at upper stack Bb cup. Adjust the screw over Bis finger until it gently closes upper stack Bb cup.

The adjustments are very fine as to how much you turn the screws. Like 1/8 to 1/4 of a turn is a big difference depending on the maker of the sax.
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You can adjust these screws without the aid of a leaklight by simply playtesting the horn.
Back both screws off so that when you press the low F key down, the Bis Bb key doesn't fully close - and when you press the G# key (with the low F key down) the G# cup rises slightly.

Now adjust the Bb down. Press the Bis Bb down, press the low F down and note the gap between the adjuster and the Bis Bb arm. Turn the screw to close the gap (it'll take a couple of goes). When it gets close, blow a long Bb (top B key + low F). It will probably be weak. Lightly tap the Bis Bb - this will give you a rough idea of how far you have to go. Make an adjustment and playtest again. When you get a strong Bb the adjustment is complete.
Now do much the same for the G#, this time using a low D as your reference. Play the D, hit the G# key and see how the note drops out. Adjust and repeat until the D holds strong when the G# is pressed.

The caveat is that this method works fine when the horn is in good order. If there's wear in the action or a few iffy pads you're going to have to go back and forth with both adjusters in order to find the best compromise....which may mean backing one of both adjusters off a little.
It's possible to improve on the adjustment by changing the regulation on the lower stack...but then it all gets very much more complicated. But the method above should at least get you back to where you were before you moved the adjusters.
 
Thanks! I managed to get it playing better but still felt like I was having issues so I brought it to tech #2 who said tech #1 had not sufficiently repaired it because there were leaks all over the place. Tech #2 is busy for a while, as is tech #1 (not sure why they didn’t really fix it sufficiently though.) So today I’m hopefully dropping it off at tech #3’s shop, where it will stay for a few days. One of things that makes saxophone challenging is how complex and delicate they are, having the ability to repair them is really a great skill and players rely heavily on techs. It almost makes me want to teach myself how to do complete repairs myself, get all the tools, etc. I would love to be able to since regular maintenance is so important to be able to get the most out of the instrument. Hopefully tech #3 will get everything sorted and I get into playing it for a while. Fingers crossed.
 
It almost makes me want to teach myself how to do complete repairs myself, get all the tools, etc.
I have Stephen Howard's 'Haynes' sax manual but am loathe to anything other than check for leaks and take it to my tech. I'm good with my hands but don't feel competent enough to tackle a sax. Previous 'mechanical' experience is repairing and maintaining old Land Rovers where big hammers and brute force were often needed!

I would like to be able to do basic work on my saxes and have thought about a training course. Unfortunately, the days (in the UK at least) of local authority funded training workshops and courses are long gone. I believe the HEA courses at Newick and Merton colleges have stopped.

I can find only two sax-specific repair courses:
Trevor Head in Wales, 5 days £1445. Covers dent removal, soldering, body straightening, tone hole levelling, repadding and more. Courses

Cambridge Makers, one day (10am-4pm) £75. Basic maintenance and emergency repair course. Does not cover re-padding an instrument.
Saxophone Repair & Care - Cambridge Makers

 
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It almost makes me want to teach myself how to do complete repairs myself, get all the tools, etc.
Don't know about "complete"!
I, incrementally, launched myself at this issue a while ago; at least for a few basics and, eventually, a repad.
People vary on the diy/handiness scale (I'm reasonably mechanically minded, but also a bit cack handed.) but it's not really that hard... For the basics. And does leave you being able to do better diagnostics, even if you do end up using a pro.

You can follow my story here:
 

Similar threads... or are they? Maybe not but they could be worth reading anyway 😀

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