RE: Launchers
The need for launchers has nothing to do with "POWA" ; rather it is the need to launch when you arrive at the flying field and no one else is there, or no one there wants to get hot castor oil on their hands and clothes... or, no one wants to take responsibility for a hand launch that ends in disaster. I am sure that with enough power, the pilot could just drop the Corsair and it would assume flying speed, but that seems to me like a recipe for self-inflicted wounds.
Anyway... my dolly-launcher is built and working very well. I have a few pictures and would be happy to guide others to the world of: "The Dalai Launcher".
Attached are pictures of the Dalai-Launcher. Some things to note;
The length of the entire system allows the two rear wheels to extend beyond the tail of the Combat Corsair when the wing is pushed up against the two wing retainers. This allows the operator to step on the wheels as a "foot" brake until it is time to rev-up and fly off.
The height of the wing retainers is 2.75 inches (sorry I still have not converted to metric when taking quick measurements... don't know why thought... ) and they are made of balsa and covered with two coats of epoxy in order to make them sturdy and slick. They are also rounded at the top. They are epoxied onto the cross-member or "load-bed" ( an eighth inch thick piece of plywood covered with epoxy) of the launcher and are approximately 13 inches apart so that they catch the Combat Corsair wing at the Gull point.
The main front-to-back rail of the launcher is made of motor mount maple wood and aluminum trim from a screen-door molding that I got at Home-Depot.
The dual rear wheels are large tail wheels... probably Du-Bro and it is effective to have their sturdiness, weight and balance.
The front "saddle" is made of the same balsa stick separated so that the cowl of the CC is laying in between where it has a cushion of R2000 silicone glue fitted to its shape. This fitting was done by covering the glue with a plastic sandwich baggie and laying the CC onto it and watching to see that the big blob of glue didn't run off.
The rear saddle is made of an inverted aluminum landing gear and covered with some foam.
The front wheels are from something in my bins of old stuff purchased from guys who are probably dead by now. They may no longer be available but I like their tracking ability in the grass.
If the Dali-Launcher and your Corsair veer off to the left or right on a simple, slow, ground test you simply bend the major front-to-back rail so that it will steer in the opposite direction. Keep trying until it tracks in a straight forward manner. It is important to do this.
Have fun...