Contour Bottom
Up

 

bullet

Step  2 CONTOURING THE BOTTOM

I made my rotisserie way earlier than the plans said to, and, made it quite tall.  When I got to the steps where it was time to glass the bottom and the sides, it was too tall.  I shortened it to the look you see here.  It's just tall enough for the fuselage to roll over unimpeded.
Another shot of the rotisserie.  It has three legs on either end, 1x4 long boards to keep the ends aligned and stop them from flexing outward.  I put a piece of 6 mil plastic on the floor underneath.  It gets trashed and covered with epoxy drips instead of my floor.
For whatever reason, I didn't take a lot of photos of the fuselage contouring when I was doing it.  I used a combination of a belt sander, Stanley Shurform plane and a 2x4 with sandpaper (two sheets) glued onto it with spray adhesive.  I also made the template that the plans specified and worked slowly up and down.  Not a big deal, but, messy and time consuming.  I think I liked the Surform plane the most - took off a lot of material at once but allowed you to work your way up and down the fuselage.
Here's a shot of the other side after contouring.  This was actually quite a fun step to do.
I might be overdoing some of the steps on this aircraft, but, I really like to use the tools I've been able to collect over the years.  Rather than sand a 1/16" depression around the landing brake like the plans say, I used my router, set against a straightedge with weights holding it down, to route a 1/16" depression.  It ends up have a square edge, which I'll have to sand later, but, the depression is exactly 1/16" consistently all around the landing brake where it was done.
   
The wood insert for the step installed.
Here's the tape applied around the landing brake to give space before the next layup.  It was a couple of months between when I applied this and when I used it - and the fuselage was upside down for part of the time - and the tape fell off on the floor!  Had to do it over...

I use a lot of double stick tape building this airplane.  Sorry, but, I can't bring myself to put bondo on the nice pieces of airplane I make.  It takes a little patience to get the stuff off when you're ready to remove it, but, if you exert steady pressure it all comes off and comes off clean.
I, too, bought the kit from RST (see the reference page for the title of the document) to build antennas.  Here's the setup for routing a channel in the bottom, in the location I picked for the marker beacon, ready for the router.
This picture shows the channel I routed for the antenna foil.  I set the depth real shallow (this foil is thousandths of an inch thick) and it turned out real nice.  You could probably get away without the channel, but, I hadn't done this before and didn't want to take any chances of the foil getting damaged in the next steps.  Hindsight tells me you could just stick the foil on (be careful when you do the micro and lay the glass on in the next couple of steps) and it would be just fine.

Here's a shot of the RG-58 routed to the front of the instrument panel with a nice curve to avoid sharp bends.  I again used my router to do this - set the depth to just make room for the cable and laid straight and curved edges to run the router against.
Another shot of the whole antenna.  I think it turned out very nice.  Looking forward to hearing beep beep beep beep beep beep BEEP BEEP BEEP beep beep beep beep beep beep etc.
Here's a close up of the RG-58 joined to the copper foil.  I soldered this up on the workbench then installed it after that.  The blue and yellow foam is scraps from previous steps keeping the ferrite donuts separated the right amount without too much fuss.
Next step is Glassing the Bottom

Up

If the image below reads "Online" click on the image to initiate a chat session with the builder.

If it says Offline, chat is not available but you can leave a message.

Copyright © 2008 Jim Springer - All Rights Reserved