Question about Battle Tenders

[MasterGwydion]

That does not follow.

The Jump field size is variable based on the size of the ship.
The amount of fuel used is based on the tonnage of the vehicle jumping.

Using a silly extreme example:
A ship could be 200 tons, 1 cubic ton laid out in 200 straight line sections. It would have a strange bubble and use the same amount of fuel as a hollowed out round planetoid of 200 tons.

"it is a variable size field and therefore uses less variable fuel use".

Right, so two different sized ships with the exact same J-drive (same tonnage and same J-rating., would use the same amount of energy, but have different jump bubble sizes and use different amounts of fuel. Because energy for the j-drive is determined by j-drive size, not ship size, but fuel use and jump bubble size is dependent only on ship size, not j-drive size. Do I have that correct?

6,700-ton ship with a J-1 drive, that is 168 tons, uses 670 power and 670 tons of fuel.

and a

2,700-ton ship with an identical J-1 drive. 168 tons, uses 670 power and 270 tons of fuel.

Is this right?

Just trying to make sure I am understanding you and you are understanding Me.. lol

 

[Nelphine]

Not quite.

Jump bubble is based on size and shape of the object(s) jumping inside it. So if you have a ship with 5 modular sections that can be attached in any order, the jump bubble will fit them no matter how they are attached (could be a t shape vs a cross shape for example.)

Fuel usage is based on tonnage of the object(s) and how far they are jumping, regardless of the J drive. The maximum distance (and therefore fuel usage) is however limited by the J drive. (1000 ton ship with J4 jumping 4 parsecs uses 400 tons of fuel. The same ship jumping 1 parsec uses 100 tons of fuel. If that ship was modular and detached 500 tons so that it was only 500 tons, it still only has a J4 drive so it cant jump more than 4 parsecs - which, due to decreased tonnage, would now only need 200 tons of fuel to go those 4 parsecs.)

This is also what Vormaerin said.


For your example, since they are different sizes, they would have a different jump bubble. But since they have the same tonnage and the same j drive, they would use the same amount of fuel despite the difference in the bubble.

 

[Nelphine]

Power is based on the tonnage of the object(s) jumping, and the j drive rating.

So for my example, the 1000 ton ship with J4 needs 400 power to jump 4 parsecs, but it also needs 400 power to jump 1 parsec.

If it drops the module and is now 500 tons, it now needs 200 power to jump.

 

[MasterGwydion]

Not quite.

Jump bubble is based on size and shape of the object(s) jumping inside it. So if you have a ship with 5 modular sections that can be attached in any order, the jump bubble will fit them no matter how they are attached (could be a t shape vs a cross shape for example.)

Fuel usage is based on tonnage of the object(s) and how far they are jumping, regardless of the J drive. The maximum distance (and therefore fuel usage) is however limited by the J drive. (1000 ton ship with J4 jumping 4 parsecs uses 400 tons of fuel. The same ship jumping 1 parsec uses 100 tons of fuel. If that ship was modular and detached 500 tons so that it was only 500 tons, it still only has a J4 drive so it cant jump more than 4 parsecs - which, due to decreased tonnage, would now only need 200 tons of fuel to go those 4 parsecs.)

This is also what Vormaerin said.


For your example, since they are different sizes, they would have a different jump bubble. But since they have the same tonnage and the same j drive, they would use the same amount of fuel despite the difference in the bubble.

Okay. So less fuel, but the power costs stay the same. Okay. That is all I need. I just need to know if it functioned like a jump governor but for size, not distance. I have not read in any printed material J-drive fuel could be varied if you changed the size of the ship, since the only ships that can do partial jumps (in distance) are the ones with jump governors. (basically every jump drive post TL-9) I didn't know if jump drives allowed you to change fuel output for altered size without changing the size of the jump drive itself, since it was only designed to move a specific size ship.

 

[MasterGwydion]

Power is based on the tonnage of the object(s) jumping, and the j drive rating.

So for my example, the 1000 ton ship with J4 needs 400 power to jump 4 parsecs, but it also needs 400 power to jump 1 parsec.

If it drops the module and is now 500 tons, it now needs 200 power to jump.

I stand corrected! Thank you!

 

[Arkathan]

External docking clamps, so the size would change. I am just curious though, since the size of the jump drive being used doesn't change and I did not know if you could selectively make your jump field smaller if you wished, using less fuel and, potentially, less power. The rules for the effects on reduced ship tonnage for M-drives is pretty clear, for J-drives, not so much. Or at least, I cannot find the rule. lol

What really bakes My brain is wondering if the battle riders' computers can be linked together so that all 11 ships' M-drives could be used together. lol

The jump rating is the maximum jump range. A jump can be made to any range less than or equal to its rating. This includes a jump from Earth to Saturn.
You will use less fuel, minimum of J1. And you will calculate the fuel used based on the reduced tonnage, since the external "cargo" went away. If the extra mass degraded your J-rating for the loaded jump, you may be able to jump further than the original jump 2, since you lost 60% of your hull volume.
I wouldn't worry about the jump bubble. They just work, unless you misjump. If they didn't just work, external cargo would not be a thing.