Author: clarnibass
Date: 2023-11-23 14:41
I assume you used a spring one size smaller which generally means 0.05mm larger/smaller (except some larger sizes), though this can vary depending on the source, sizing (metric/inch), etc.
Then there's the inconsistency in tolerance e.g. a nominal 0.7mm spring is 0.68mm and a nominal 0.75mm spring is 0.76mm, so the difference ends up more than you'd think... just slightly. This is not enough to make a significant difference, but it sometimes (though not often) can make a small difference.
As far as bending, it is basically in the same direction (or the exact opposite) that it is trying to push the key. Having the spring bent also to another direction won't necessarily cause any problems and it can create different direction of friction, which is helpful sometimes (probably makes no difference in this case, unless done to an extreme).
There were some arguments on repair forums whether curving the spring would be different than just a kink (to take the two extremes) even if the end is at exactly the same place... not getting into that here.
You can't really compare the feel with a new clarinet. There are many things that can affect this, like the exact shape of the key, height of the hinge, weight of each area of the key, exact length of the spring, the spring itself, etc.
Another thing about the needle tip, it's particularly important for this spring. If you use a cut end it will most likely dig into the wood and create friction (same as A key flat springs). Make sure the spring doesn't touch at the sharp point.
A thinner spring reduces the length to diameter ratio, but if there's a still a problem with the thinnest spring that works well then only modifying it for a longer spring would completely solve it. How much of a problem there really is depends on specific case and how annoying it is depends on the person who is playing the instrument.
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The Clarinet BBoard
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