The gentleman from KMP had a set of .60 size rotating retracts at the Toledo show this year. These retracts are designed along the Spring Air design which uses a one way air valve to retract the gear and a spring to deploy, piece of mind you won't be doing belly landings. The gear housing was an aluminum billet so you can bet the wing is coming apart before the retracts are giving in. The gentleman was not aware of the problems everyone was having with the Robart 615's. He implied he had a ready supply available. Try contacting him through his web site www.kmp.ca and see if he can't help.

I have the Robart 615's in my TF Corsair and they are nothing but problems. The slightest bind in the mounting rails and the gear will not cycle and anything other than perfect touch downs will bend the hinges, mine bent on the second landing and had to be replaced. This past weekend the gear decided it wasn't going to deploy all the way. We tried everything including deploying the gear at the bottom of a loop but they were not coming all the way down into the locked position. Finally had to belly land damaging the cowl and breaking a $15 APC prop. Robart should be absolutely embarrassed to sell this gear. These planes require a lot of money, time, and effort to build only to be lost to a poor design execution of the landing gear. TF should also be concerned, they can't be selling as many Corsair kits as they could with a decent retract system available.