Even though the description says they use solar winds to generate extra movement, a star in the system is not required for solar sails to work. The ability for them is just the ordinary extra movement ability. Same thing if you change that to standard movement in your mod. Either way they will work in systems with no sun, or with black holes.
Edit: Ok, I see what you are doing. You make the sails create energy and store just enough to keep them moving as long as you have a star to create the energy to begin with. Interesting.
Of course you would still have 1 point of movement in a system with no star. Sargasso Sea?
[ May 07, 2004, 12:13: Message edited by: geoschmo ]