First question: how much do suspensors mass (the gun upgrade, rather than as a general rule)? Or, to put it another way, if they were inactive or non-functional, how much would they add to a gun's weight?

Second question: do suspensors and other anti-gravity devices do anything when they don't have a gravity field to work against? For example, if there was a gun-battle in a starship compartment, and they suddenly lost gravity, would the suspensors have any effect other than increase the mass (and hence inertia) of an object?

Third question (and I know this will probably come up relatively soonish in my campaign): If anti-gravity technology does require gravity to work against, does it have to be a gravitational field, or would the pseudo-gravity of centrifugal acceleration suffice?
Essentially, am I in danger of seeing servo-skulls and grapplehawks on Babylon 5*?

*Note- I am not going to be using Babylon 5 in my campaign, although I have got plans for a station utilising rotational pseudo-gravity.

Keep in mind even in space there is gravity. When you are in orbit you are still falling towards the planet. The reason you don't hit the planet is you have momentum pushing you sideways so you miss the planet.....

IIRC (pulled from deep memeory, Imperial Armor I think):

Suspensers, like grav-shoots and even the machines used in most landers arn't true anti-gravity machines. They are, instead, gravity suppressers. What ever objects are within their 'field' have less weight (but same mass) then they would otherwise. This means that suspensers would, indeed, have no effect on a station that uses rotational 'gravity'. The systems themselves probibly don't weigh much more then a few kg, if it ever becomes important.

There are a few true Anti-gravity items in the Imperium, servo-skulls and Space Marine Land Speeders being the most common examples.

Dalnor Surloc said:

The only point in space where you can escape absolutely from gravity would be between galaxies... As for solar systems, please remember they are all inside the gravitational envelope of their sun. Also, if a planet has a moon, then that gravitational force should be taken into account.

If you are interested, look in www.en.wikipedia.org/wiki/lagrangian_point

In short, if a celestial object is orbiting another one, then five points can be found where [gravity pull A] = [gravity pull B], and in those points you can put an object of negligible mass compared to the other two (yes, I would say the biggest space station has negligible mass compared to a moon or a planet) which wont move, nor need any energy waste to keep its position (relative to the other two objects).

Of course, you can simply keep your ship in what can be called "high orbit", a point where the gravitational attraction of any celestial body nearby is so negligible you would die a thousand times of old age before your ship attained some measurable acceleration.

And about the absence of gravity and weapons... well, energy weapons don't have any recoil. And lasers work much better in vacuum. If you need a practical experience about recoil, the funnier I ever tried involved a Grand Theft Auto game, a cheat to spawn the Rhino, and just firing the turret without pressing any other button.

(yes, I would say the biggest space station has negligible mass compared to a moon or a planet)

I'm sure there's a joke to be made here, but someone might finde my lack of originality disturbing...