Bike pedals used to put a metal screw cap to protect the bearings from contamination. Now, instead, use the plastic plugs, which are often lost. Rescue plastic or nylon tubes from medical bubbles. Such substitutes being kept quite steady.
Recommend to read
THE MOTOR OUT…NAILS AND SCREWS
Before copiers that manufacture aircraft models in the Mel scale, often raises the problem of simulating a power plant with a radial engine. Offers an unusual method based on the use...
ON THE SIMPLIFIED TECHNOLOGY
The peculiarity of the proposed model-class submarine EL-500 (Fig. 1) the fact that her body is going from flat wood blanks. Thus it was possible to get rid of difficult for beginners...
