Kelly,
Thanks for all the information. I'll try to explain what items I want to buy. Following your advise the following desribes my fuel system and the items needed. The vent line from the main tank is a large diameter tygon fuel line; I also used large diameter tygon for the system filling line going to the UAT and the line connecting the UAT to the main tank. I will then use 6mm hose from the UAT to the pump- but will narrow to 4mm just before the pump; 4mm is required from the pump to the ball valve - going to 6mm immediately after the leaving the pump; 6mm tubing will be used to the valve and on to the filter; and finally 4mm used just before reaching the turbine. I will need three connectors (6mm to 4mm) to accomplish the above system. Since space is at a premium, perhaps the barbed fittings you mentioned would be best (?). What is the cost of the barbed fittings and the Festo fittings (6mm to 4mm, and normal fittings for both sizes)? I need 3 feet of 4mm and 6mm tubing.

I fill the gas system with a trigger valve into a one-way valve. I noticed it was difficult to remove the line from the one-way valve after filling...perhaps the cold temperature is the cause. I would be hesitant to by pass the on-board gas cylinder for fear of gas being ingested by the turbine when attempting to release the line from the one-way valve. Is it normal for this to happen? I feel comfortable serving the turbine and then closing the hatches and starting the turbine with the transmitter. It decreases the possibility of FOD and gets me away from the noise. Is this OK? The manual states the gas cylinder contains enough for one to three starts. I think that statement should be changed to read "expect one start".

The designer of the Reaction 54 is now working on replacing the 4oz UAT with a 16 oz tank. It obviously will provide for longer flights. I'll look at doing something similar once I get accustomed to flying my turbine.

Keith