[Suicide Junkie]

I'm not sure what you're looking at but I have:

Ion Drive
10 size
3 mp
160 rads

Grav 1:
10 size
4 mp
400 rads

Quantum:
10 size
6 mp
500 rads

Grav 4:
10 size
7 mp
750 rads

The Grav drives give +1 thrust, and increased rads cost.

If you factor in the fact that you will need less engines to move the same speed, the rad costs are not as bad:
Grav 1:
400 * (3/4) = 300 = 188% rads cost.
Grav 4:
750 * (6/7) = 642 = 128% rads cost.
And you get a decent 25% to 14% reduction in the size of your engine room as a bonus.

[ May 28, 2002, 01:06: Message edited by: Suicide Junkie. ]