Hello guys,
what it is important for a player is not the tension in Kg but the feel of tension. The two things are very different
The feel of tension is subjective, exactly like the number of sugar's teaspoons one want in his/her coffee. Some want one, some two, three... and so on.
The feel of tension of ukulele sets is balanced by the makers to make happy, by statistic, 80-90% of players. Not possible to cover 100%.
If one install the soprano strings on a tenor, using the string formula, one will verify that the tension becomes higher. On can suppose that the feel of tension becomes as well higher instead not: it feels slack. Longer the scale lesser the feel of tension ( the Kg, instead, increase)
The general rule is that each player want to keep stable the same feel of tension across different kind of ukuleles (same sugar's teaspoons into the coffee) .
So, in order to compensate the difference about the tactile feel of tension the diameter must be done thicker of a certain amount.
So here is the rule: longer the scale ticker the gauge in order to keep stable the same feel of tension ( same sugar's teaspoons in the coffee).
Our sets are exactly balance in that way so the feel of tension across the different ukulele sizes is almost the same.
Said that, there is a residual 20-30% of guys that prefers higher or lower tensions (i.e. less or more sugar into the coffee).
In the case of our set it is easy: if you have a concert and want higher tensions install the tenor strings; if you want less tension install a soprano set (the string length is enough for most of cases); if you play a soprano and you want more tension install a concerto set and if you want less tension install a soprano set Canadian tuning in B (i.e. designed for a tone higher so the strings are thinner).
What it is written (thicker strings on smaller instruments and vice versa) is a mistake: it is true for the string formula only (i.e. in order to keep the same value of tension in Kg) but it is a huge mistake in order to keep stable the feel of tension that it is what the players always wants.
Ciao
Mimmo, from Italy