Well, that info can"t be found in-game
. However, I can give it to you thanks to my own measurings:
Speed measuring is always at straight flight
WW1 speed
Tier 1: 76 kt (57 kt with all bombs)
Tier 2: 92 kt (68 kt)
Tier 3: 100 kt (76kt)
Tier 4: 107 kt (83 kt)
Tier 5: 115 kt (92 kt)
WW2 speed
Speeds here are very hard to measure...
Tier 1: 226 kt (149)
Tier 2: 270 kt (185) - 137 kt with landing gear and all bombs, 212 only with the gear.
Tier 3: 302kt (212) - 160 kt with landing gear and all bombs, 240 only with the gear.
Tier 4: 336kt (240) - 185 kt with landing gear and all bombs, 270 only with the gear.
Tier 5: 369 kt (271)
Agility
This isn't easy to measure, because airplanes can improve their turn time with more power. However, better agility will let you perform tighter turns, but your plane will be much more sensitive. Upgrading this will get your roll rate better and the tail elevator stronger. Improving maneuverability will also lower your stall speed, which is perfect for destroying bombers and zeppelins.
Ammo
Tier 1: 175 bullets
Tier 2: 240 bullets
Tier 3: 325 bullets
Tier 4: 380 bullets
Tier 5: 450 bullets
Bombs
This no needs explanation at all... IMPORTANT: purchasing more bombs won't affect to your top speed, it just gives more intermediate speeds (for example, you have two bombs at your Sopwith Triplane, with all them your speed is 83 kt, with one around 90 kt, and with no bombs 107 kt). Keeping bombs will also lower the agility of your plane, which is useful for head-on.
Bullet drop
Visit here my bullet drop tutorial
www.dogfightelite.com/index.php/forum/sq...ge?start=1590#381020
Fuel
IMPORTANT: WW2 aircraft's fuel consumption is much higher than WW1's
Tier 1: 175
Tier 2: 215
Tier 3: 240
Tier 4: 270
Tier 5 (only for WW2): 295
Have a nice flight!