Hello i mentioned that i will go with 1.2 mm that is .047 inch with 1 inch OD and it is not .062 inch thick. So with this when we calculate, the weight difference is not very huge. Secondly according to plans we need to use 1 1/4 inch OD tube shifting from 1 1/4 to 1 inch will also decrease drag to some extent and i think it will be stronger too.