In agreement with Andrea from Ganesha Games, I can offer you the fan created rules for space combat using Song of Blades and Heroes Engine.
Please note that these are not complete rules. It is just addition for SBH to emulate space combat. You need basic game to play it. You can purchase original Song of Blades and Heroes fantasy rules from here.
Considering scale, these rules are appropriate for fighters dogfights of the Star Wars type.
Of course, larger ships also play big part of equation, while small
ships have two major roles:
to make kamikaze attacks against enemy capital ships and to protect
your capital ships from enemy kamikaze attacks (if you read the rules
you will see that many things in them are resolved by ship collisions )
The rules can be downloaded from here (link is now working).
So, If you find time to read the rules, or even better to play them, let me know what you think.