This is one of the problem that had been discussed in the local forum.
A fella changed his strings to 0.12 gauge. As a result, the whole bridge was lifted up by 2 cm++.
Different gauge will provide with different tones, sustain and etc. Normally a larger gauge will provide a louder volume and sustain. This guy probably string these strings because
1. He doesn't care about gauges so much
2. He wants a louder volume.
What he failed to realise is this: Not all guitars are made for gauges so high. The thicker the strings, the more tension they has and more pull exerted on both the bridge and the neck. Luckily, his bridge was a floating bridge, so it takes much of the pull from the strings than the neck. Has it been a locked bridge, the neck will suffer a enormous damage. Sadly, this dude tried to reinforce his bridge by adding 2 more springs. So where does all the resultant tension acts on? The neck~! He also said he has difficulties tuning (turning the tuners), proving that the stress is on the neck.
Thicker strings are made usually for drop tunings. Usually when a guitar is drop tuned, there is a tension slack on the strings especially on gauges like 0.09 . Thus thicker strings helps to lessen tension slack. So what he fails to understand is the following,
- Large gauges are made for drop tunings.
- He doesn't know how to choose suitable strings
Some of the guitars are made to cut the tension slack as well.
Normal a scale of a guitar is 25.5'', like Ibanez RG (for example). There is also Ibanez RGD but the D makes a difference. D refers to "drop tune" and also it has a large scale (26.5) and has a slightly thicker neck as well. With larger scale, it reduces the tension slack in the strings. These kinda guitar will allow you to drop tune more freely with less slack.
The whole main thing about this post is you must know the suitable strings for your guitar. =)