X-Ray Upscale Build

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Time to paint a single fin black. That means lots of masking. I used a combination of Frog delicate surface tape, Tamiya tape, and two garbage bags. I think I got it all covered.

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No runs, no drips, no bugs. I'm very happy with how this turned out. I even saved the bags.

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Yes, there are visible imperfections. But I like it! I like it a lot! It looks like an X-Ray!

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Time for retention. Looking at the bum, I realized I didn't leave much room for my usual retention clips.

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I got socket head screws, but they were still a little tight. So I used the Dremel with a 1/2" sanding drum, and ground away a little of the inside of the clips.

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That seemed to help. I was able to get the clips screwed down tight, although the heads of the screws still rub. I need to put the clips in the vise and grind them some more.

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Time to work on recovery. I had attached a short length of Kevlar to the eyebolt inside, so I pulled it through the back of the motor tube to tie the long Kevlar to it. I decided to try the Nerf dart trick to reduce the chance for a zipper. I sewed one stitch through the dart and Kevlar to hold it in position.

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The smallest Nomex blanket I have is 12x12, which may be too big. If I have to, I can cut it smaller. But even with the big blanket, the Kevlar and 48" thin mil chute fit in the 2.2" body tube.

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I noticed that the threads of the bolt didn't go all the way through the threads in the eyenut. So I drilled the hole in the transition a little deeper with a Forstner bit. Perfect. I put some Loctite 242 on the threads, and tightened the bolt.

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I recently spotted JB Weld brand blue and red thread locker. Using the blue and it looks pretty good.

Looking forward to seeing the X-Ray boost.
 
For retention clips of that length I use 18 ga stainless sheet. ( Cut to length for forming and 3/8" to 1/2" wide) It's a lot easier to work with than that size aluminum stock. The only difference is that I bend the end that goes on the motor in to a "U" channel so that the aft closure is trapped. I know 18.ga doesn't sound like much but I've had it hold up to K700s with no deformation of the clips. (x2) I've even held J350s in with one with no problems. The "U" is the secret since it doesn't allow the clip to wiggle loose or kick to the side.
 
I recently spotted JB Weld brand blue and red thread locker. Using the blue and it looks pretty good.

Looking forward to seeing the X-Ray boost.

I didn't know JB weld made thread lock. I ordered an H180W from BAR for the flight on the 4th.
 
For retention clips of that length I use 18 ga stainless sheet. ( Cut to length for forming and 3/8" to 1/2" wide) It's a lot easier to work with than that size aluminum stock. The only difference is that I bend the end that goes on the motor in to a "U" channel so that the aft closure is trapped. I know 18.ga doesn't sound like much but I've had it hold up to K700s with no deformation of the clips. (x2) I've even held J350s in with one with no problems. The "U" is the secret since it doesn't allow the clip to wiggle loose or kick to the side.

I used to use 3/32" x 3/8" brass. I'm not sure why I switched to the bigger aluminum.
 
X-Ray has a passenger!

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That's funny. I used to think about abducting my sister's mini-troll dolls back in the late 60's to do that very thing with.


Take care,

Duane
 
That's a very cool looking upscale Jim,really came out just like the oop model.
 
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