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
AGO SPINNING AT DIFFERENT SPEEDS
Almost two centuries have passed since the invention of the Bicycle. Since then, just who, where and how it didn't "reinvent" and not improved. The result was a diverse array of pedal...
ATTENTION! THE TARGET IN THE AIR
"...In the snow two wide pits. In the middle of their wooden houses to install guns the muzzles up. Log cabins are easy to rotate and allow you to hit a flying airplane" — says in "Notes...
