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Question About Needle Springs

Author: kilo
Date: 2020-02-13 20:26

Thanks to the information provided on this site (and the in depth article by Clark Fobes provided by Tim Dufka) I was able to address the finicky register vent mechanism on my Selmer 33 bass. The needle spring controlling the Vent Suppression Lever was tired and needed replacement.

I noticed that the post holding the spring is canted slightly (to the right, towards the tone holes) which requires the spring to be bent in order to control the lever and close the vent on the body.

Why is this done, when canting the spring in the opposite direction would apply force without needing to be bent?

The other question I had is whether a slightly larger, more powerful, spring would work if I drilled the appropriate sized hole, or would that over-compensate and upset the balance of the mechanism?

Images:

https://imgur.com/lNNjYqN

https://imgur.com/gKcRyNr

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