Just finished the RAM 500 installation on my StarJet and it has gone well. All valves and on-board propane tank, Duralite Plus receiver battery, standard ECU pack are all in. The fuel tank is a 1.5 liter soda bottle, not ideal* but it fits and I have even squeezed in a UAT. Total weight 13 pounds , about 1.5 pounds less than the JPX installation so with 12 pounds of thrust performance will be even better than it was and that means very high speed performance with excellent low speed capability using crow braking. C of G was almost exactly on target without ballast. A PST 600 R or Wren 54 would also be perfect for this model. Just final checks then hopefully fly the thing on Sunday. In its JPX config. this machine was a delight to fly and John Palmer and I demoed both of mine in the air at the same time doing formation aeros at the British Nats. some years ago.


A better, safer, fuel tank would be two parts of a BobCat fuselage tank joined by a kevlar tube so that the length could be tailored to suit and the capacity would probably come up to about two liters. To prevent any possibility of damage in the event of a wet start I have aranged for a stainless steel tube to plug into the rear of the fuselage which will be removed after engine start. That overhanging tail is easy to burn.
David Gladwin