Editing Heinkel He 100 (section)

=== He 100 V4 ===
V4 was to have been the only "production" prototype (postwar called the He 100B, previous aircraft being the He 100A). It was completed in the summer and delivered to Rechlin, so it wasn't available for modification into racing trim when V3 crashed. Although the aircraft was unarmed it was otherwise a service model with the 601M, and in testing over the summer it proved to be considerably faster than the Bf 109. At sea level, the aircraft could reach {{convert|560|km/h|kn mph|abbr=on}}, faster than the Bf 109E's speed at its best altitude. At {{convert|6560|ft|order=flip|abbr=on}}, it improved to {{convert|610|km/h|kn mph|abbr=on}}, topping out at {{convert|669|km/h|abbr=on}} at {{convert|5000|m|abbr=on}} before falling again to {{convert|641|km/h|abbr=on}} at {{convert|8,000|m|abbr=on}}. The aircraft had flown a number of times before its landing gear collapsed while standing on the pad on 22 October. The aircraft was later rebuilt and was flying by March 1939.