I have been playing around with engines a little. I wanted to check out some things I had read in the forum about diminishing returns with an increasing number of engines. Turns out that is not true (they probably added more thrusters than their reactors could power), speed is simply speed=INT(thrust/size) for both cruise and sprint. Just add up the total thrust of all your engines, divide by the size and round down to the nearest integer. You now have the speed of the design (assuming you have enough reactors to power the thrusters).
For reference here is a list of the thruster stats from the game (1.0.6.0) plus some derived numbers:
Code: Select all
Name ST SE CT CE Size ST/Size CT/Size ST/SE CT/CE
Proton Thruster ZX-3 1000 5 560 2 7 142.86 80 200 280
Quantum Engine 1260 5 640 2 9 140 71.11 252 320
Proton Thruster ZX-6 1230 7 620 3 7 175.71 88.57 175.71 206.67
Acceleros Engine GT60 1500 7 720 3 9 166.67 80 214.29 240
Quantum Engine RX 1440 6 750 2 8 180 93.75 240 375
Vortex Engine TX2 1630 5 950 3 9 181.11 105.56 326 316.67
Acceleros Engine GT140 1760 5 860 2 8 220 107.5 352 430
Vortex Engine TX6 1840 4 1000 2 8 230 125 460 500
Starburner XX-12 1880 7 1180 4 8 235 147.5 268.57 295
ST=Sprint Thrust
SE=Sprint Energy
CT=Cruise Thrust
CE=Cruise Energy
Size=Size of 1 thruster
ST/Size=Sprint Thrust per Size
CT/Size=Cruise Thrust per Size
ST/SE=Sprint Thrust per Sprint Energy
CT/CE=Cruise Thrust per Sprint Energy
Pretty much what you would expect. The thrust per size generally increases while the energy efficiency is more variable. The only surprising thing is that the Acceleros Engine GT60 has a lower sprint thrust per size and cruise thrust per size than the Proton Thruster ZX-6 due to its larger size. It is more energy efficient, but I don't care about that in my designs. I will avoid using the GT60 from now on and stick with the ZX-6 until I get the Quantum Engine RX. The GT60 is not worth it and is now banished from my designs until such time as it is rebalanced to make it competitive.