o1d_dude
'I battle gravity'
I typically use kevlar for the y-harness of my rockets and epoxy the tails along the sides motor mount tube. To the eye of the y-harness I then at a shock cord of tubular nylon.
Most recently for my original Wildman Jart I simply cut an appropriate length of 3.5mm kevlar tubular braid and epoxied one end along the side of the motor mount tube and will attach the other end to the nose cone at the appropriate time. No tubular nylon in the recovery train.
I'm thinking about doing the same thing for my Madcow/RW Formula 54...running one 12' length of 3.5mm kevlar cord from the nose cone to the motor mount. Total weight of the kit parts at this point is 19 ounces and I anticipate all up weight coming in at less than two pounds.
I keep hearing it's a bad idea to use kevlar for the entire shock cord due to its lack of elasticity. On the other hand, I have seen it done.
What's our consensus here?
Most recently for my original Wildman Jart I simply cut an appropriate length of 3.5mm kevlar tubular braid and epoxied one end along the side of the motor mount tube and will attach the other end to the nose cone at the appropriate time. No tubular nylon in the recovery train.
I'm thinking about doing the same thing for my Madcow/RW Formula 54...running one 12' length of 3.5mm kevlar cord from the nose cone to the motor mount. Total weight of the kit parts at this point is 19 ounces and I anticipate all up weight coming in at less than two pounds.
I keep hearing it's a bad idea to use kevlar for the entire shock cord due to its lack of elasticity. On the other hand, I have seen it done.
What's our consensus here?
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