BUILDERS TRAILS

Every year increases the number of syt and Palaces of pioneers, where the pipeline automodelismo. During the construction of trails is often necessary to perform smooth transitions from concentric circles to parallel straight, which causes some difficulties. At the station of young technicians of the Leningrad district of the city of Yerevan was built trendoriginal track. Today we decided to share our experience of graphical representation of the curves of the track.

There are five concentric circles with center at point “About₁“, with different radii. The difference between the radii of 10 cm, a larger radius of 75 cm Distance between the five parallel lines M₁H₁, M₂, N₂, M₃, N₃, M₄N₄, M₅N₅ 10 cm is Necessary to spend an additional 5 concentric arcs, the tangents to the circles parallel and straight.

 

To do this, you first need to line M₃N₃ down (or up, depending on the circuit of the track) to conduct a parallel auxiliary straight line at a distance equal to R₃. A₁ radius = 2*R₃ is drawn the arc to the intersection with the auxiliary direct M6H6. The intersection point Of₂ is the required centre for more concentric arcs. From the found center On₂ of radius R₁ hold for a tangent arc of a circle with radius and direct M₅N₅, radius R₂ to the circle radius and direct M₄N₄ and so on, the last arc to hold the radius of a circle with radius R₁ and straight line M₁H₁.

 

Required center O₂ can be found and other builds. For example, a supporting line to hold to a straight M₅N₅ at a distance equal to R₁. From the center O₁ of radius equal to R₁ + R₅, draw an arc to the intersection of the additional line. The point of intersection is the same point O₂.

 

Scheme for the construction of the curves of the track.

 

A. HAKOBYAN, Yerevan