My LOC/Precision 4" Goblin - just about ready

[markfsanderson]

My 5 year old son, Charles, is standing next to my nearly complete LOC Goblin - he wants to launch it and is practicing his 5 4 3 2 1 Blast Off! Just about ready for launch, just need to install the rail buttons. I really loved the kit, very high quality. My first LOC Precision of any kind. The only downside was my bad finishing technique - I'm still learning. My epoxy filets turned out rough so I tried smoothing them out using Elmers wood filler. I think the wood filler was old/bad and it didn't turn out very good. Nevertheless, I primed, painted and applied decals . . . Looks good as long as you don't get too close! Next time its Rocket Poxy for Filets . . . I also finished a Xeno (also a nice kit) and am working on the Hyperloc 163 w/stickers purchased from Stickershock and a Hyperloc 835 . . . all very impressive kits.
On this Goblin, I'm creating an upgraded nose cone ebay to hold a Jolly Logic Altimeter 2 and will probably use the JLCR on this one as well.


Mark

 

[dr wogz]

One fin is supposed to be black!

but it sure looks sweet!! happy flights with it!

The rail buttons (the bottom one at least) should screw into the lower CR. Use a wood screw. You will also need to mark a line to keep the two buttons aligned.

If I may (this is my 'standard procedure')
I add a bit of 1/4 ply to the CRs, and shape accordingly. just a 1" chunk. this turns a portion of the CRs into a 1/2" piece. Then align these two as you build your MMT. These 'blocks' are where you will attach your rail buttons. (It's easier to hit a 1/2" area than a 1/4" area!) I will then mark the tube with a line between the fins, where I want to put the buttons, and will also then place the MMT beside the tube and mark the areas of these blocks. I now know where the buttons will go. Install the MMT, then drill for the buttons. Then add fins & such..

You can get nice fillets with any epoxy. It just takes practice!

 

[markfsanderson]

One fin is supposed to be black!

but it sure looks sweet!! happy flights with it!

The rail buttons (the bottom one at least) should screw into the lower CR. Use a wood screw. You will also need to mark a line to keep the two buttons aligned.

If I may (this is my 'standard procedure')
I add a bit of 1/4 ply to the CRs, and shape accordingly. just a 1" chunk. this turns a portion of the CRs into a 1/2" piece. Then align these two as you build your MMT. These 'blocks' are where you will attach your rail buttons. (It's easier to hit a 1/2" area than a 1/4" area!) I will then mark the tube with a line between the fins, where I want to put the buttons, and will also then place the MMT beside the tube and mark the areas of these blocks. I now know where the buttons will go. Install the MMT, then drill for the buttons. Then add fins & such..

You can get nice fillets with any epoxy. It just takes practice!

I figured out that one was supposed to be black a bit late . . . haha! I knew how to do filets, but I got sloppy/lazy in doing them and tried to patch it later on . . . didn't completely work. I'll be installing the wood screw type of rail guid into the bottom CR, they are 1/4" thick and with epoxy it should work well. The other guide will about 2 or 3 inches from the top of the main body tube utilizing a screw, blind nut and epoxy. On this one, of course, I'll have to make sure its smooth to prevent snags during para ejections. It should be a fun flyer. It turned out to be right at 1300 gms before engine . . . so I should be able to do some mid-power with it as well . . . Oh, and I'll be using a 36" long x 1" aluminum angle piece to locate the two rail guides vertically . . .


Thanks!

Mark

PS: Advice is Always appreciated!!!!

 

[dr wogz]

The other guide will about 2 or 3 inches from the top of the main body tube utilizing a screw, blind nut and epoxy.

You want the two buttons as low as possible. Try to get the upper one into the upper CR or close to it..

 

[markfsanderson]

You want the two buttons as low as possible. Try to get the upper one into the upper CR or close to it..

Dr Wogz,
Hmm . . . will do . . . I should have the rocket on the rail for as long as I can . . . thanks for the advice!

mark

 

[grouch]

Looks good man! Mine is built but needs primer and paint.

 

[DRAGON64]

Nicely done, that is one of those classic styling rockets, a look that never gets old.