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Droptank Mountpoint Cost

Overview

Do the mount-points for drop tanks effect a planes performance? Lets find out!

Testing Parameters:

• Altitude 100-200 feet for all tests.
• Droptank (if equipped) dropped on runway before take off for tests.
• Plane internal fuel was 25% fuel.
• Smallest gun package used in tests unless indicated otherwise.
• Speed measured at edge of radar ring (some planes can go a few mph faster after radar ring).
• Wep used from start if plane had it.

 Plane         Speed With\Without DT Mountpoint
 ----------    ------------------------------------
 BF-109g6      331\336

 F6F           329\329 

 F4u-1         350\350 (150 gallon tank mountpoint)
 F4u-1a        355\361 (150 gallon tank mountpoint)
 F4u-1d        357\357 (150 gallon tank mountpoint)

 FW-190a5      332\338

 K-61          313\313
 Ki-84         344\344

 N1k2          325\325

 P-39d         302\307 (20mm pkg)

 P-40e         295\299 (75 gallon tank mountpoint)
 P-40f         303\303 (75 gallon tank mountpoint)
 P-40n         310\312 (75 gallon tank mountpoint)

 P-47d11       342\342 (75 gallon tank mountpoint) (8 x 50 calls)
 P-47d25       340\340 (75 gallon tank mountpoint) (8 x 50 cals)
 P-47d40       340\340 (75 gallon tank mountpoint) (8 x 50 cals)
 P-47m         357\363 (75 gallon tank mountpoint)

 P-51b         353\353
 P-51d         361\361 (6 x 50 cals)