SPEEDWAY IN THE GYM

For the manufacture of tracks required plywood thickness of 10 mm, and it is important that it was dry, smooth, uniform thickness and without lagging layers. Each sheet should have the dimensions 1500×1500 mm. If this condition is not met, installation of the alignment and connection of individual components is greatly difficult. Straight sections are cut on a “circular saw” along the cross-section of the fiber, and then butt and trimmed. The finished strip should be sized 1500×480 mm. For Assembly of straight sections of the route will require 27 partitions of size 480×1500 mm and 4 mm. in size 480×800

Of curvature of the track at all sites are identical, which allows to modify the shape of the track, to reduce or increase the number of turns. Work on a milling machine with a larger area of the desktop. For this purpose it is fixed to the sheet of the PCB size mm. 1000Х800Х20 Guide grooves cut finger milling cutter Ø 5 mm to a depth of 5 mm. Final trimming of the finished curves are produced by the same mill. Grooves milled to the marks made using the template. All operations are performed with one setup of the workpiece, which moves on the plane of the table around the axis — bolt M10 — 12 mm In order to avoid “tightening” of the workpiece with the cutter during operation, it is necessary to press to the table surface, but do not limit its movement around the axis. After milling the grooves carefully cleaned.

 

For connection of straight sections and turns are the cleats 40x30x480 mm. they drilled holes Ø 10 and Ø 6 mm for electric wire. Bars with casein glue and screws attached to the workpieces, and then connecting bolts M10 length 80 mm.

 

Along the outer sides of the rectilinear alignment of workpieces must be secured to the cleats 40x20x1500 mm, they will perevorachivaite screws the side of the track.

 

Fig. 1. The cut tracks:

1 — contact plate (brass), 2 — friction layer 3 — plywood skirting, 4, 7 — holes for through-bolts, 5 — hole for electrical wire, 6 — bar 30Х40Х480 mm, 8 — plywood 10 mm.

 

The contact plate is made of brass with thickness 1.5—3.0 mm. Their corner rollers on a horizontal milling machine NGF-110. On the working shaft put on the roller with the recess, and the grip on the desktop strengthen two rollers with bearings. Rolling done gradually — first, bending the strip in a large radius, and then reducing it. The workpiece contact plates must have the exact width 10 mm, otherwise the corner will turn out uneven. For mounting the contact plates to the panels they drilled every 150 mm for screws with countersunk heads. The mounting plates of each section starting from the connector, the docking sites must be provided with electrical contacts plates. The track is mounted on a rectangular base with a size of 400×450 mm out of 10 mm plywood. The main part of the track is elevated to a height of 400 mm, and in some areas up to 800 mm.

 

To improve traction model with track the road surface is covered with sea sand, zameshannym glue with pigment to simulate the color of concrete paths. (You can use aniline dye, gouache, ink.)

 

Fig. 2. The circuit Vorkuta Palace of pioneers.

 

In accordance with the International rules track must meet the following requirements. The length of each track of not less than 20 m. the DC Voltage is supplied separately with each control panel on a separate track (plus tyre on the left, negative on the right). The rectifier shall provide regulated voltage of 6, 8, 12, 16 V at a current of at least 10 A. the Depth of the guide groove of given thickness in the current-carrying tires, not less than 6 mm, width 3 mm. the height of the sides, ensures retention of the model during Assembly, not less than 40 mm. Minimum turning radius not less than 250 mm. Width of the current-carrying tire 8+/-2 mm. the Track must have a smooth surface and markings at every meter, beginning with line Start.

 

LOMTEV E., Vorkuta