AU-1 vs F4U-7 Corsair???

[DanteC]

What is the difference?

[TimAPNY]

The AU-1 did have the R2800-83 WA engine. It was single stage and single speed super charge engine for operations at low level. According to what I have read there was only 111 made and 16 were lost in combat in Korea. 6 were lost in combat with French forces in Indochina. It looked just like an F4U-5 with out the air-inlet scoops (Basically like an F5U-5 with an F4U-1 Coiling on it). Would have been the F4U-6 but was an attack aircraft for the Marine Corp so it was A (attack) U (Vought) –1 (their first attack aircraft). It had 4 20mm cannons and 10 hard points on the wings. Plus the centerline station (s)

A point that had me confused is that the USS Alabama museum has an F4U-7 painted up and marked as an Au-1. BUT it is really an F4U-7.