Common cause of puncture welcomer — acting limit switches rim spokes. A protective ring belts rubber, mounted on rims of plants-izgotovitelej, a little stretchy, but over time, harden and break.
A reliable replacement could be the same ring from an old inner tube from the “Lada”. They are cut on either side of the large diameter of the camera — it turns out two great strips with a width of 17 mm.
Recommend to read
THE “SECRET” PAPER DOVE
Perhaps it can be called the first and most accessible for a child flying a model made with their own hands. And really to make a paper dove will not require any tool or special...
HOT GLUE DROP
The cap of the toothpaste tube is made of a material which can be used for the manufacture of reliable non-conductive compound when attaching wires and electronic components on the...