edwinshap1
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Another option is to slot the tube where you want it. Then you insert a full long enough coupler to the body to make sure that while the recovery gear doesn't snag, you aren't adding unnecessary weight.
That being said. If you are making forward fins, you shouldn't need to TTW them. The reason you TTW is because of the forces acting on the rear fins with how they stabilize a rocket with that much force/mass. Forward canards, if not unnecessarily large, will have very little effect on much of anything, and therefore just would need a small epoxy fillet. I've launched 1mm thick FG with nothing more than a JB weld fillet to mach 1.2, so filleting does work.
That being said. If you are making forward fins, you shouldn't need to TTW them. The reason you TTW is because of the forces acting on the rear fins with how they stabilize a rocket with that much force/mass. Forward canards, if not unnecessarily large, will have very little effect on much of anything, and therefore just would need a small epoxy fillet. I've launched 1mm thick FG with nothing more than a JB weld fillet to mach 1.2, so filleting does work.