Maximum Dive Speed

Each aircraft was loaded with 10 minutes worth of fuel and an air start at 10000 feet was used. The aircraft were allowed to dive on auto speed to ground. The figures below are the speeds at which each aircraft can dive to the ground without any structural failure occurring.

The Halberstadt CLII experiences an auto speed trim "cut out" at 145mph. The aircraft will not dive at a steeper angle on auto speed trim.

Maximum Dive Speed
 Aircraft Maximum Dive Speed
 Fokker DVII  240mph
 R.A.F. SE5a  225mph
 Sopwith F.1 Camel  200mph
 Fokker Dr.1  200mph
 Spad XIII  200mph
 Spad VII  195mph
 Halberstadt CLII  190mph* auto speed trim "cut out"
 Bristol F.2B  170mph
 Albatros D.Va  160mph