Generator powered Gundams in Seed have a nearly unlimited combat time. We know they use the reactors to power their suits and beam weapons, but the series never explains how the energy is converted into thrust (probably something to do with Mirage Colloid Particles). The fact that generator powered Gundams in Seed can hover for indefinite times in the air and function just as well in atmospheric combat as in space, it should be assumed that their thrust is nearly as endless as their power supply and can function for prolonged times, only limited by the pilot.

UC mobile suits use similar generators that power the suit and close combat beam weapons (rifles and cannons are powered by replaceable e-pacs), but are more rooted in the ‘real robot’ genre. UC suits don’t have a mysterious means of propulsion, so they rely on rocket fuel. UC mobile suits can run for the same amount of time as Seed generator suits, but their ability to fly in atmospheric combat and speed up/slow down in space is more limited. UC suits are built for space combat, so they can’t fly on earth like in Seed, unless they have advanced Minovsky Craft Drives or dual use jet/rocket engines like Zeta Gundam and other mobile armors specially designed for atmospheric combat. That’s why there are rarely aerial battles on earth in UC series, unless they take place in lower gravity colony environments. As for space combat, the limited rocket fuel/propellant (which is used to power EVERY thruster on UC mobile suits and not just the external tanks: I believe that’s where the semantics created a misunderstanding before) is used up bit by bit every time the suit increases speed or changes course. UC suits function longer in combat than other conventional spacecraft because they can maneuver their arms and legs in order to orient themselves and change directions. For a regular spacecraft to do this, it has to use up propellant every time it moves and then the same amount of propellant to stop itself from moving. It’s real world stuff like this that Seed ignores, which pushes it more into the super robot genre.

@ Rahvin & Amon
Don’t get technical issues spoil the fun on gunpla! Grab your airbrushes or spray cans, turn on some new-age music and chill! Or gaze at Sumeragi’s chest. Or something!

@Jumbo Machfinder God
Problem with Gunpla releases is that usually Bandai states a release month, and then about a month or so before it they’ll mention a date at their official site.
Now I could be really wrong, but if I remember correctly, Unicorn Gundam was released close to end of December. I believe the same should happen with MG Sinanju.

Technically speaking, I should be able to get them by mid-January but… right now I’m way too concerned with foreign currency exchange rates. We’re facing yen crosses with a 5-year low rates, and as things are now I would have to raise imports’ prices to levels that no customer would be willing to pay for (at least, based on the prices I’ve been practicing so far), and with little to no profit for me. And I don’t want to be labeled as a thief ^_^;
I hope better days to come.