I made a swinging arm for a mailbox, so that when the mailbox is hit, it swings away and then back.
So, now is the time for installing a new mailbox post. I bought a 30" post support that is made to be beaten into the ground with a sledgehammer. It is like an arrow with four fins.
I am now having second thoughts and am not sure if this is a good long term solution. One of the reasons is that there is going to be quite a bit of tipping moment due to a little longer swinging arm. (my guess about 40-60 extra foot pounds of moment of force).
I want this mailbox to stay vertical and not "tip".
I live in Northern Illinois, so we have frequent freeze/unfreeze cycles of soil.
So... What's a good way of mounting a mailbox post? Maybe I should set that mailbox post support at least partially into concrete? (ie, digh a shallow hole, beat it into the hole level with ground, and fill the hole with concrete?