Has anyone tried to make a turbo plug head for a COX TD 0.020 and if so would you care to share some dimensions and performance numbers. I have made heads for the TD 0.020 with the Nelson plug and in my experience they must be made of steel as there is not enough material between the OD of the Nelson plug and the ID of the Cox cylinder to allow the use of aluminum. My primary interest is for free flight applications where the TD 0.020 is used in numerous events.

Thanks