How long do consumables on a Ryder last?

I'd say Ryders are not equipped for long distance or long Flight Length operations. They are small and maneuverable, while also containing proper life support for the pilot, and of course a wide assortment of armaments. This leaves little in terms of space for expanded provision storage.

There are probably a couple of exceptions though: the serephim is refereed to as a scout Ryder, so it is possible to surmise that back in the peak of the Ryuvian era, Ryders were able to go much farther and have a much larger range of operation than they do now. Largely in part due to super-advanced-precursor-science.

The idea of a Ryder not existing within short range of its hanger also seems to be a completely foreign idea to most of the cast as well, as seen when we first encounter Icari. This is also notable in that the people on board the Sunrider are either trained military personal who should be familiar with all standard and non-standard types of foreign naval craft; or in the case of chigara, someone who has built at least two fully custom ryders, as well as worked on numerous ships for the Mining Union. The phoenix is strapped to an external warp booster which provides it with the ability to warp without a full fledged ship, as well as probably provide increased storage for long distance operations, which would definitely help a mercenary who works all over the galaxy. This further solidifies that a Ryder is not normally designed for more than a couple hours of operation.

Finally, a little off the direct topic, I'd say you should probably adjust the name of the thread just slightly. For me, when talking about a game, consumables generally make me think of one use items for use in game play, like potions or revival items in other RPGs. A better word for this topic would probably be "provisions," which refer to supplies like food, fuel, air and the like.

Otherwise, this is a very interesting question, and I'd also be interested to see what the actual operation time for typical Ryders would be.

Thanks for the thoughts so far! And well, I wasn't exactly sure if this post belongs to the Sunrider General, because it's not exactly "gameplay talk", but as it's about canon stuff, it probably was misposted. Sorry for that!
"Consumables" was probably not a good title, yes - I was using Wookiepedia for a very long time, and provisions are called consumables there, so I assumed it would be a viable choice. But yeah, the relation to RPGs is pretty close there.

I just find it kinda interesting to see how different shows handle this - in "Nadesico" for example the energy for the Aestivalis units only lasts for five minutes (I see a pun towards NGE here, but maybe that's just me), while oxygen lasts for less than eight hours. "Sidonia" however takes the crown with stored oxygen, food and water for ten days in the Guardians. Sadly I can't remember any other shows - barring that various Gundam series have consumables for at least 1-2 days on their titular mecha.

In theory, a ryder generates its own power through nuclear fusion so it could last for millennia by itself. But in practice, a pilot's going to run out of food long before that. It depends how much rations was packed into the ryder. It could keep recycling proteins, but eventually the pilot's going to go to crazy from eating his own crap for weeks.

The major limiting factor of a ryder is that attaching a warp drive to it would defeat the purpose of a lightweight space supremacy vehicle, so its range is limited to sublight distances. So it's mostly moot that a ryder can keep operating forever, when it's too slow to go very far away from warp capable ships.