I am building a keecat ,just a question for you guys ,with the tricycle undercarriage , is there any reason why you cant drive all three retract units from one servo . also will it be neccesary to mount the servo midships or where it , the servo , is designed to be

I'm sure if you spend enough time on it, it can be made to work on one servo but why bother? Just use two and make your life east and it will be more reliable that way. The nose gear takes time to get set up properly and I can only imagine how hard this would be if you try to work everything off one servo. Just use two.