TOWED MACHINE

IN TOW-AUTOMATICStarting a towing device (Fig. 1) easy to produce in any model circle. In the absence of a lathe it can be made flat, which, however, some will increase size, but will not affect performance.

Valid device.
 
Before the start of the case pull out the rod, while out of engagement with the bracket-lock out latch. Then put on her guard railing and enter the ring in the slot of the bracket-lock, where the latch is held down by a spring mounted on the rod and abutting at its adjusting screw. Latch limits the movement of the rod up. The preload of the spring is adjustable slotted screw.
 
At the start of the airframe under the action of a tension rail device on the axle-the suspension is deflected forward through the emphasis attached to pull the rudder puts the rudder in the neutral position. To perform cutaway model, it is necessary, after delaying to disperse it at the bend of PLI to sharply pull the guard rails. This creates additional load on the spring. Stock goes down, and the latch out of engagement with the bracket-lock, it rotates on its axis and releases the ring rail.
 
If the inexperience of the athlete during the start of the congestion occurs, player is automatically released from a rail that prevents it from breakage. The weakening and even the sagging of the rail do not cause a premature drop, as the ring is closed with a latch.
 
Case towing devices carved on tocaria the machine together with the future arm-lock. The disc eccentric and clamp the Chuck of the machine and drill to the diameter of the glass body, and then under the threads of the adjusting screw and finally protocide and cut. The wall thickness of the glass should be within 0.5 mm.
Fig. 1. Automatic towing devices (bulk)
Fig. 1. Automatic towing devices (surround version):
1 — support nut, 2 — spring, 3 — stock, 4 — housing 5 — bracket-lock, 6 — blank, 7 — latch, 8 — adjusting screw.
 
The handle bracket fitting method to a thickness of 4-5 mm. it will saw a groove for the latch n between his cheeks rivet-blank.
 
The casing bottom should be cut internal thread M5 or M6 under the adjusting screw.
 
Stock manufacture of steel wire Ø 3-4 mm at one end where you need to cut the thread for the lock nut and the other to saw through the groove p to drill a hole for the axis of the latch. The latter can be cut from sheet duralumin (D16T) or brass with a thickness of 1-1,5 mm.
 
On the adjustment screw, drill a hole for the rod diameter, the saw slot and cut it to the course length of 6-7 mm.
 
Spring pick for sports cars load at the end of compression was 2 kg, and for models of class A-1 is about 1.5 kg. the material can use carbon steel wire Ø 0,5—0,6 mm.
 
The body of the towing device can be made from a piece of brass tube of suitable diameter. The bracket-lock must be made of strips of brass or thick sheet thickness 0.5—0.6 mm, suitably bent and soldered to the body.
 
A “flat” version of the starting a towing fixture is shown in figure 2.
 
Fig. 2. Automatic towing device (flat version)
Fig. 2. Automatic towing device (flat version):
1 — “cheeks”, 2 — adjusting nut 3 — stop.
The spring is pressed when withdrawn from the bracket-lock the latch by rotation of the rod which is screwed into the supporting nut. The housing consists of two “cheeks” that are connected through pads on the rivets. Nut made of stripes of thickness 2.5 mm, it cut the thread corresponding to the thread rod.
 
There are other constructive and technological solutions, while maintaining the basic idea — automatically reset the rail in excess of the permissible load on the model. The dimensions of the device may depend on design and dimensions of the forward fuselage section and the length of the springs, a shaft and a number of other conditions. Although it does not preclude the establishment of universal towing accessories, suitable for both large n small models.
 
This design of towing devices now being revised to incorporate requirements of the dynamic start. Complication is extremely low.
 
We hope that modelers will attempt to solve this problem and will share their experiences in the journal.
 
V. Wrestlers, the judge-Union category, the city of Gorky

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