Tuesday, April 26, 2005

Builders note: This is a handy tool which is easy to make. It is a rivet measuring tool. You can buy one for about 30 bucks...or make one like this. The notches along the right side of this piece of scrap metal are cut to the proper height for 3/32 and 1/8 " rivets...that the length of the rivet that should be sticking out through the pieces of metal you are joining. The holes are drilled to the proper diameter for the 'shop heads' of the rivets. I wish I had made this sooner.

Change the orange air hose to the blue one...because the orange one is hooked to the oiler for the air tools and I don't want any oil in the primer. Put on the martian costume. I thought the repirator was on tight enough. It wasn't. When I finished, I had green primer on my nose around the edges of the respirator...a sure sign that there was air flow there. Next morning I felt like I had drunk a bottle of Jack Daniels...it took me until noon to remember my name. The respirator will be tighter next time.

I took the outdoor pictures while I was getting ready to paint. You notice the weather was lovely and I like to do this outside where there's plenty of fresh air. Now that I'm ready to paint, it's raining outside...so I had to build a painting booth by suspending this tarp from the runners for the garage door.

I was amazed that it all seems straight and without a twist. That was all pretty fun. What's not fun is the next step...taking it all apart and cleaning out all the burr holes created by drilling and then doing the 3 step corroision proofing process. Notice the colored tags that I have put on each of the ribs. After you have taken it all apart and primed the pieces...you have to put it all back together again exactly the same way it was when you drilled it.
Sunday, April 10, 2005

Here are two of the hinges being prepared for mounting. It's critical that the hinges by straight and lined up properly. Otherwise, the elevator could be restricted in it's motion. Note to other Sportsman builders: A music stand is a great way to hold the instruction manual. Keeps it up out of the metal shavings, and countless items that accumulate on the table, gets it out of the way, and you don't have to bend over to read it. I havn't figured out a way to keep from misreading the manual however. I'm sure this never happens to you other guys, but it's amazing how often I read something three times, but don't understand the meaning until I have screwed it up. Not the fault of the manual...just the nut behind the wheel.

It's time to attach the hinges to the elevator, the trim tab, and the horizontal stabilizer (I'll have to do the h.s.later since I havn't finihsed it). First you take these long pieces of piano hinge (aircraft grade, of course) and cut them into the appropriate length. The Dremel cutting tool makes short work of this.

This is the back of the trim tab. Inside there are small ribs. These two attach to the control rod that moves the trim tab...a pretty important function. The yucky hole top right is the result of a 3X rivet gun. This gun allows adjustment of the pounding action of the gun from a gentle tap to an explosive force that could move a mountain. I think it's what John Henry was up against when he 'died with a hammer in his hand, Lord Lord, he died with a hammer in his hand." Anyway, it inadvertently got turned up and took after the trim tab with a mind of it's own. Honest...that's my story and I'm sticking to it.
Sunday, April 03, 2005

This is the other side of the elevator. You have to get a bucking bar inside the elevator through this opening which is very tight. The opening by the way will be where the electric motor (servo) is mounted that will operate the trim tab. I am going to make another yoke and remount it. I got an offset rivet set from Arnie Clark for the top that allows you to rivet around corners. Hopefully that will do the trick. This is also a place where an extra set of hands would have made a big difference.































