- Joined
- Feb 22, 2017
- Messages
- 191
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I'm in the planning stages for my next build: a 2.2" fiberglass Adventurer I got at the Madcow Black Friday sale.
The stock kit comes with tubular nylon. Up until this point, I've always used kevlar for my harnesses but my current plan is to use the supplied material for this build.
I recently picked up a few yards of nomex cloth that I can sew up as a harness protector, but I need a little help understanding the principal behind this. If the first foot or two is protected, what about the rest of the harness? Isn't that going to get just as cooked folded up inside the body tube? Is there some kind of residual heat/burn after eject that suggests the need for extra protection for what's still inside the tube? Or is it simply that the part closest to/connected to the motor mount is literally on top of the charge and that extreme proximity is all it takes to accelerate/cause failure?
For attachment, my plan is to use a Giant Leap hardpoint anchor that I'll tap and screw in to the body tube itself just above where the longest motor I'll likely use will end. It will allow me to remove the anchor at a later date to inspect and change the harness. Any thoughts on this plan? Will three countersunk screws be strong enough? Not even sure I can countesink in thin-wall fg? Typically these are epoxied into the end of the motor mount tbe, but the suppled mount is way too short for the CTI 5 grain case I plan to use. I wanted to avoid the expense of ordering a new, longer motor mount tube plus a third centering ring.
The stock kit comes with tubular nylon. Up until this point, I've always used kevlar for my harnesses but my current plan is to use the supplied material for this build.
I recently picked up a few yards of nomex cloth that I can sew up as a harness protector, but I need a little help understanding the principal behind this. If the first foot or two is protected, what about the rest of the harness? Isn't that going to get just as cooked folded up inside the body tube? Is there some kind of residual heat/burn after eject that suggests the need for extra protection for what's still inside the tube? Or is it simply that the part closest to/connected to the motor mount is literally on top of the charge and that extreme proximity is all it takes to accelerate/cause failure?
For attachment, my plan is to use a Giant Leap hardpoint anchor that I'll tap and screw in to the body tube itself just above where the longest motor I'll likely use will end. It will allow me to remove the anchor at a later date to inspect and change the harness. Any thoughts on this plan? Will three countersunk screws be strong enough? Not even sure I can countesink in thin-wall fg? Typically these are epoxied into the end of the motor mount tbe, but the suppled mount is way too short for the CTI 5 grain case I plan to use. I wanted to avoid the expense of ordering a new, longer motor mount tube plus a third centering ring.