Hi Vance,
Clark said he used almost a gallon of fuel = about 10 lbs. He said he will need less once he is more experienced
I dont sell peroxide any longer, but when I did I used to charge USD 3.30/lb for this quality. Its not very cheap, so one should not use the rockets unless it is absolutely needed like if you have to take off from a real small field , -or if you want to have fun!
To get a price and transport cost; Hear with Michael Carden at
www.xlspace.com His production plant is in Wyoming.
I dont have any more drawings, but if you study the one on my website plus the pictures, maybe you can find out how to make them.
If you want to buy ready to use components you can contact Robert Barrett at
www.barrettair.com
He is looking into start manufactoring. You can also hear with Clark. He is a good mechanic!
I have never managed to wear out a catalyst package,The catalyst seem to last forever -at least if you use pure silver wire screens.
Clark used only half throttle (half of full speed on the battery screw driver) at the take-off on the clip. If you want to try with less powerful rockets you can make the rocket nozzles with smaller diameters. It is quite easy to widen the nozzle diameters in a lathe or even with a drill.
To be as powerful as possible it is best to have the rockets at the tips because there is the highest fuel pressure because of the centrifugal force, Also the rockets typically have a lower thrust but a higher speed than a jet engine or a propeller for example. Therefor the fuel economy will be best if they are located at the tips.
Best regards,
Erik
..