Jet Pack and backplate

Jedi Bob

Well-Known Hunter
Jetpack and backplate

What should the distance be from the backplate to the backside of the jp? Should the JP be flushed up against the back so the rocket goes straight back, or leaning back a little???
 

shawnpane

Active Hunter
I beleive the bottom of the pack goes flush.While the top leans back A bit.So if you are eiwing it from the side it is strait up and down.Remember to duck,when going thru doors.
 
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DarthVader1

Well-Known Hunter
I'll keep that in mind when I build my harness, so it could lean back a little. Remember, according to comments and pics, that if it's flush to your back, the rocket will be touching and scratching your helmet as well, which will be annoying after a litte while.
 
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BobaFettish

Well-Known Hunter
I would get it as close to the backplate as possible at both the top and the bottom. If you let it lean backwards, it will just sway from side-to-side as you walk (trust me on this) which will cause you to wear the paint off of your backplate. Mine sits as tight as I can get it, and the rocket does not hit my helmet.
 
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Jedi Bob

Well-Known Hunter
Ok, I am all ready to seal my MB JP. I have been glueing "L" brackets around the perimeter. I was planning to use GOOP as the adhesive and then 2-part epoxy to fill in the seal around the edge. I am very nervous about the back being that the straps< I am sure, are going to put some pressure when the JP hangs. And I don't want the seal to start to crack.

Any advise wouyld be greatly appreciated.
 
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DL44 Blaster

Well-Known Hunter
What are the straps going to? If you put a frame inside and are going to strap to that you won't have a problem since all the weight will be beared by the frame.On my first jet pack when I used the "L" brackets to close up the back I used 3/16" aluminum pop rivets into the holes on my "L" brackets since the holes were a perfect 3/16".Seeing the rivet heads wasn't too bad considering with the frame,and rivets that thing was strong as heck. :) I wanted to avoid the same thing with the seam cracking under any pressure.

Steve
 
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Jedi Bob

Well-Known Hunter
Steve, you got a pic of the back of your JP?
Yeah, I have a PVC pipe fram inside. What did you use the fill the outer seam?
 
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DL44 Blaster

Well-Known Hunter
Unfortunately I don't have any pics as I sold it for my third jet pack...........an RA fiberglass which was all done,and closed up when it came.

For filling in the gaps on the one in question I used bondo since my seam wasn't too bad.It just took mostly time and patience......oh and a couple of cans of filler primer for that glass smooth finish ;) I start all my paintable props with that stuff.

Steve
 
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Jedi Bob

Well-Known Hunter
Thanks Steve,

What is Filler Primer? How did you pop rivet with the back on???
 
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DL44 Blaster

Well-Known Hunter
Filler primer is a "plasti-cote" spray primer that is extra thick when applied leaving a heavier coat to sand off which in turn fills small holes and imperfections.

To line up the holes in my JP back with all the "L" bracket holes I put machine screws in all the "L" bracket holes and then painted a dab of red paint on each screw head.Then I carefully placed the JP back onto them being extra careful not to move,or rub the screw heads and get a perfect dab of paint on the opposite (inside) of the JP back cover.Then I simply drilled out the holes and pop riveted the back on.The rest was just a matter of filing,bondoing,sanding,priming,etc. ;) ......you get the picture.

Hope this has helped :)

Steve
 
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