- Sep 6, 2009
- Reaction score
I agree, the offset looks concerning, but it should not be a problem. The guy lines hold the unit pretty solidly. My rocket is only 1000g, so the moment is not much. I prefer using the full length of the head in the vertical position (like you guys do with rails). The tower baseplate rests on the head also, which is good. If anything, I could have used a 2x4 instead of 2x6 in the jaw to better center the tower in the Jawstand.Have you considered turning the Jawstand head 90 degrees and then centering your tower over the stand's center axis? I'm not sure how deep the head is, but that may alleviate any concerns that you may have about the tower being offset.
OK, here is a parts list to the best of my knowledge. I built this thing last December! All parts from Home Depot/Lowes or my scrap bins.Looks great! You've got lines holding it in place, and you can always stake it down through the holes in the bottom of the legs.
How about a build thread? Or at least a parts list? I have a jawstand, but I've just got a 1/2" drill chuck on an "L" bracket and a 2 x 4. One of these would be great for getting into competition builds!
Perhaps, but my club has been using pieces of wood for launch pad standoffs for years. Never seen one ignite.looks great, my only concern is that the 5' lengths of 1x2 "select pine" may get a little toasted at the bottom. If for some incredibly unlucky reason, the rocket sticks and doesn't launch, the flame may set the wood on fire.
A rocket stick? We had a Hybrid K motor stick on the pad and it melted a hole through a 2" x 3" aluminum tube that was the main structure of the pad. Granted, there should have been a blast deflector in place, but there wasn't, and it essential cut the pad in two.looks great, my only concern is that the 5' lengths of 1x2 "select pine" may get a little toasted at the bottom. If for some incredibly unlucky reason, the rocket sticks and doesn't launch, the flame may set the wood on fire.
Right. This is the concern. Well, my supports are fixed at 5 ft and I am trying to avoid a complete rebuild. I think I will take a hacksaw and cut off one foot from the aluminum rails, leaving just 2' unsupported. Hopefully, this will be stiff enough.I wouldn't worry about binding as much as I'd worry about one side flexing more than another and the rocket coming out at an angle. I would suggest supporting the top section as well.
Oooh. I like this idea. I am struggling with the halo design, though. Maybe another ring of the PVC pipe? Other?You could always build a halo ring that at least binds the top section together. If you used two tie-ins for each support, then tied all 3 together, it should be stiff enough.
That's somewhat similar to one I built. The most advanced tool I have is a drill press so I keep stuff basic as well. What I haven't been able to do is come up with a design that allows for fast adjustment of diameter and finally have decided a dedicated tower to each size is the easiest way to go. I am now looking at designs that are easy to disassemble/assemble for transport.I built this contraption for a 38mm minimum diameter rocket with a J motor. This is my first attempt at a launch tower. All materials are basic Home Depot stuff. Seems sturdy enough. Comments? Thanks!...
If you're worried about that you can plasti spray the bottom foot of it and it should be fine. After all, they spray engine exhaust manifolds and they turn out fine.looks great, my only concern is that the 5' lengths of 1x2 "select pine" may get a little toasted at the bottom. If for some incredibly unlucky reason, the rocket sticks and doesn't launch, the flame may set the wood on fire.