Racing car Leningrad-2. Drawing, description

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Racing car Leningrad-2. Tips for a modeller

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A few years ago, I came across a photograph of an unfamiliar racing car. The car was of interest, but the signature under the photo did not contain any additional information about it, and the search for them remained unsuccessful for a long time. But one day the case brought me to one of the designers of this car. With its help, the necessary information about the car was focused on my desktop, and now I can invite modelers to make a road version of it.

The car "Leningrad-2" racing formula III was built at the 2nd Leningrad car repair plant in the early 70s by a group of enthusiasts led by the master of sports of the USSR S. Kapustin. For the first time in the USSR, aerodynamic loading methods were tested on a car - anti-wings in front and a spoiler in the back. Almost all body surfaces are flat or slightly curved. The design of the frame and running gear "Leningrad-2" is similar to the machines "Estonia", but differs in size and suspension device. The machine is operated with a Moskvich-412 engine with two horizontal twin carburetors.

"Leningrad-2" was built for experimental purposes, and changes were constantly made to its design: there were options without a spoiler, with a wing instead of a spoiler, with a VAZ engine, with the same wheels in front and behind. All these modifications were tested in races for two seasons (racer N.A. Ivanov), and then were transferred to one of the clubs.

Main dimensions:

Front wheel track ......... 1410
rear wheels ......... 1520
length.........3670
width.........1820
height.........920
ground clearance.........100
base.........2320

The pictures show the first version of the car.

I recommend making the Leningrad-2 car model with a load-bearing body made of tin. This technology makes it possible to create a light (95-100 g) and very durable model that can show high sports results.

The body is assembled from thin tinplate (0,2-0,25 mm); you can use, for example, cans of condensed milk. When working with tin, follow two basic rules: firstly, it is better to solder two separate parts at the right angle than to bend one; secondly, it is necessary to solder the seams, if possible, from the outside, while the solder fills all the cracks, and it is much easier to remove its excess.

Rice. 1. Racing car "Leningrad-2" (M 1:24) (click to enlarge)

Rice. 2 (click to enlarge). Rear suspension unit with engine (dummy oil cooler, fire extinguisher and brake light are not shown): 1 - engine model of the car, 2 - frame rods (wire Ø 1,5 mm), 3 - upper rear suspension arm (wire Ø 1 mm), 4 - rear wheel hub (brass), 5 - rear wheel disk (duralumin), 6 - wing nut with M3 thread, 7 - washer, 8 - lower rear suspension arm (wire Ø 1 mm), 9 - rear axle bushing (brass), 10 - rear suspension strut (tin, brass S - 0,4 mm)

Rice. 3 (click to enlarge). The front part of the body and the design of the front suspension: 1 - front axle bushing (brass), 2 - front axle hub (brass), 3 - wheel disc, 4 - grover washer, 5 - wing nut with M3 thread, 6 - front pivot strut pendants (tin, brass S - 0,4 mm), 7 - washer

The main feature of the proposed technology is that the copied suspension arms will be load-bearing. The front suspension is assembled directly on the body. Its levers are cut from 0,8 mm thick brass sheet or roofing iron. Holes Ø 0,8 mm are drilled in the levers for trunnions from stationery pins, the ends of the levers at the point of attachment to the body are bent so as to provide a soldered seam area of 5-6 mm2. The lower lever is additionally fixed with a clip clip passing inside the spring and shock absorber simulator. In this case, it is necessary to ensure a sufficient area of \u2b\u3bthe seam; it is impossible to solder to the end. To install a continuous steering rod, holes Ø 0,8-0,9 mm are drilled in the sidewalls of the body. Bushings are inserted and soldered into the front suspension swivel struts along the flange, and trunnions are inserted into the upper and lower rack shelves, the hub is inserted into the bushing and fixed from falling out with a washer, which must be fixed by soldering on the hub shank. Then the rack assembly (without the wheel) is installed in place, the steering rod from a paper clip or any steel wire Ø XNUMX-XNUMX mm is inserted with its ends bent down into the holes on the middle shelves of the rack.

There is no need for a soft suspension of the current collector, therefore, the tilting of the frame is provided only for ease of maintenance; in the working position, it is rigidly fixed with a screw. The arrangement of these parts is clear from the drawings, I only pay attention to the fact that the front part of the frame serves as a limiter for the angle of rotation of the current collector. The frame is bent from soft steel wire Ø 1-1,5 mm.

The rear suspension unit with the engine is assembled separately and then attached to the body with frame rods and the upper part of the clamp. Its design is shown in the figure, so I will offer only the optimal assembly sequence. The frame rods and the rear suspension frame are soldered to the clamp with a screw tie, which completely covers the engine, then the rear axle is assembled and the levers are installed. After that, a layout of the engine, differential housing and gearbox is assembled in place. If a large-diameter crown gear is used, then a slot will have to be left in the differential housing layout, into which it is installed.

Rice. 4. Model front end structure (slip-out collector assembly) (click to enlarge)

Rice. 5 (click to enlarge). Current collector: 1 - M3 screw, 2 - base plate (foil fiberglass S - 2 mm), 3, 9 - brushes, 4 - limiter stop (tin, brass S - 0,4 mm) with a tie rod leash (stationary pin), 5 - M3 nuts, 6 - grover washer, 7 - wires from the engine, 8 - wire fixing tab (clip), 10 - guide rail (foil fiberglass, S - 2 mm)

Engine - DK-5-19 or any other similar size. The gear ratio of the reducer is 1 : 4. The machine is painted in white or yellow. On the spoiler, the inscription "LENINGRAD-2" against the background of a blue stripe, on the rear wings "LARZ-2" against the background of a blue wave.

The roll bar, common exhaust pipe and suspension arms are chrome-plated, the engine is silver, the gearbox is silver, covered with yellow-brown varnish, the exhaust manifold is black, the fire extinguisher is red.

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Alexander
The chief designer of the car "Leningrad-2" Alexander Kapustin, designer Vladimir Petrov. The work was carried out by order of the Ministry of Autotransport of the RSFSR from 2 to 1969.

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