Hi, I'd like to use a Spring Air Tailwheel that I have with the Seirra mains on my Skyshark P-40 along with the Robart red retract valve. Since SA is air up and spring down and the sierras are like Robarts air up and down, can I mix the two types in one airframe using the Robart red valve..
appreciate your feedback. Cheers. Ken K.