If I was going to make one in a survival situation, I would use a wider rock instead of this brick. The stick that's parallel to the brick doesn't need to be sharpened on either end, it just needs to be straight and smooth so it rolls. The other stick needs to be sharpened at both ends. The sharper you make it, the more sensitive the dead fall will be. When you place the first stick on the rock, wedge some bait in between the stick and the rock. So when an animal tries to get the bait they will move the stick which will trigger the dead fall. Good luck. ... https://www.youtube.com/watch?v=Y_yHRzmAbhs

I was trying out something new this day. You can see it appear at 0:16 I'll put another video up later. ... https://www.youtube.com/watch?v=AYBMmMOjI_0

The video starts right after the hand launch. The pilot repaired the plane with some glue and pieces of a coat hanger and flew again the same day. RC Planes on Sale here http://amzn.to/1xH1rEt ... https://www.youtube.com/watch?v=h7v-JeuArmU

Here's how I change a flat, after years of doing it. Bike tubes for sale on Amazon http://amzn.to/1uVxA7z Some things I forgot to mention; If you have a hard time getting tires off of the rim, you can use tire levers, that's what I have. http://amzn.to/1Dvn6At I don't usually need to use them though. And I just take half of the tire off the rim, then I take the popped tube out, and then slide the new tube in (valve first) all around the tire, and then I put the half of the tire back on the rim. Then fill the tube with a little bit of air, like I talked about in the video, to get the tire centered on the rim before putting the wheel back on the bike. ... https://www.youtube.com/watch?v=DMzFRiSnHTg