Shallow Dropouts on Single speed MTB
I just finished building up a singlespeed MTB that is going to be my winter beater (i know, winter is still a bit a way).
The bike is a cheap-ish raleigh that was abandoned by my old roommate. The dropouts were really really shallow (maybe only an inch deep), typical of a mountain bike. Now, me not wanting to spend any money on this project (or as little as possible), I wanted to skip stuff like using a chain tensioner.
The problem is, the way I got the chain, the rear axle sits very far out almost to the edge of the dropout (see attachment, green circle is the axle). (note, my dropouts do not look like this, it is merely to demonstrate the placement of the axle)
Is it safe to leave it like this?
It seems secure right now and i plan on replacing the QR skewer with wheel nuts.
Is there anything I could do to make it more secure? I know half chainlinks exists, but even despite this, there is only maybe half and inch at most left in the dropout. I'm not opposed to DIYing some sort of contraption either if anyone has any ideas.