RE: CMP F4U Corsair 50 Build Log
I too struggled with the retracts on this bird. I first tried the mechanical's but they didn't work well. I then ordered some servo-less electric retracts (Lato-Tech) but after 8 weeks of waiting I cancelled my order. While I was waiting I went ahead & installed Robart 615's with struts. They barely fit for proper operation but they do fit.
I have 8 flights on mine now (it's an electric conversion) and I have yet to see any of the characteristics that so many complain about. Of the CMP warbirds in this size range the Corsair is probably the best, followed by the Zero, P-51, then last is the infamous .50 P-40!
My e-conversion is no light-weight either. It's well over 8.3lbs but flies well!