To increase your jump distance do you upgrade all these: Frame Shift Drive, Power Plant, Fuel Capacity and Power Distribution ?
...
It's complicated ;-)
Over at the Explorer's forum, people have been arguing about these loadouts since the beginning of time (probably, in any case long before I discovered the forums).
If you want to improve jump range, there's mainly two things you can change:
- FSD class and rating
- total mass of your ship
Thrusters also appear to have a small impact.
Second best thing is to go over to one of the shipyard sites (I prefer
coriolis) and play around with the loadout.
Best thing is to buy the ship and try it on a test flight.
If I check at coriolis and compare the Eagle to the Viper, the Eagle has a stock range of 8.76 ly max while the Viper can jump 7.12 ly max (in both cases without any cargo and on the last gulp of fuel). Maxed out, the Eagle could theoretically reach 25.37 ly, while the Viper could reach 21.33 ly. Maxed out usually means the best FSD you can fit, lightest components everywhere else, no shields, no guns. So, with a similar loadout, the Eagle will always be able to jump further than the Viper.
Since both of these can, at the best, fit a class 3 FSD and just the hull of the Viper is heavier than that of the Eagle (60 tons vs. 50 tons), that's reasonable.
And since the damage model of ED doesn't permit smashing off the Viper's wings in order to save weight, you won't be able to improve that ratio ;-)