These rings are bonded to the motor mount and keep it centered in the body tube.
#ESTES STAR ORBITER UPDATE#
Secret Project Update 4: Assembly begins. This kind of fin installment failing due to drag forces, especially when using 24-hour epoxy, is pretty much impossible. When you do it this way, that attachment is very, very strong. No, they actually go THROUGH THE WALL of the body tube, so that they’re glued onto the body tube AND the motor mount tube. These fins are not merely glued onto the body tube. That just gives you an idea of what kind of power the new project will need and be able to handle. I’ve seen Type G motors in these dimensions, which are roughly 4 times as powerful as these “E” motors right here. It’s also an E motor, about as powerful as the smaller one, but the longer and larger-diameter casing allows more propellant to be packed into it, so there are much more powerful motors that can be made in this size. On the right is an E16-4, on the extreme low end of what’s compatible with the incoming secret project. There are more powerful motors in these dimensions but they use plastic casings and composite propellant, so they’re more expensive and I haven’t ordered any. On the left is an E12-6, a motor that’s sort of in the middle of the power range that’s compatible with the Hi-Flier XL. It is so strong that if I mix and apply it correctly, the balsa fins will crack along the grain and the body tube will completely unravel along the spiral seam before that epoxy joint cracks.īasically it makes your standard Gorilla glue look like the stuff on the back of a Post-It note, and it will be very necessary for this build The longer an epoxy takes take to cure, the stronger the bond, and this one is one of the strongest at 24 hours until a complete cure. It’s an epoxy, a two-part bonding agent consisting of a resin and a catalyst. Pretty strong stuff, and maybe even a little overkill for low- and mid-power rockets.īut there are much stronger bonding agents, and this is one of the strongest around. My previous builds used instant-bonding cyanoacrylate “Gorilla” glue.
#ESTES STAR ORBITER SERIES#
I structured it as a series of updates, showing off the equipment, supplies, and the rocket while keeping its true size a secret until the airframe was completeĪlright, here I’m starting to slowly pull back the curtain on my secret project. No edits, just a straight adaptation to TRF. That changes now!Īll of these posts are exactly the way they appear on my FaceBook. I documented the build for my Star Orbiter on FaceBook to share with my friends there, but I never got around to posting it on TRF.
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