Single-track motor vehicle Mustang-350. Drawing, description

PERSONAL TRANSPORT: GROUND, WATER, AIR
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Single-track motor vehicle Mustang-350. Personal transport

Personal transport: land, water, air

Directory / Personal transport: land, water, air

The car and motorcycle appeared almost simultaneously and have been coexisting quite peacefully for more than a century. From time to time, attempts are made to combine the advantages of both vehicles in one two-wheeled vehicle. Indeed, it is tempting to create a carriage as comfortable as a car and as cheap as a motorcycle ...

I bring to the attention of readers the design of such an auto-hybrid - a two-wheeled "Mustang-350". I hope that this car will attract the attention of not only DIY enthusiasts, but also professional auto and motorcycle builders.

"Mustang-350" is a single-track two-wheeled two-seater motor vehicle with a closed body. In fact, this is an IZH-Jupiter-5 motorcycle with an extended wheelbase. It differs from the serial IZH only by a new frame and a pair of side lifting wheels, allowing it to maintain a vertical position during stops and at low speeds. The engine is a two-stroke, two-cylinder liquid-cooled engine with a capacity of 24 hp. Such engines have recently been produced for Izhevsk motorcycles, and this one was the best fit for my Mustang.

The frame of the Mustang is welded from steel pipes in a special slipway. The following parts are used from the motorcycle: a steering column with bearings, engine mounts and rear wheel suspension pendulum mounts.

The slipway for frame welding is assembled from wooden bars on a flat floor or on a chipboard shield. First, the steering column is rigidly installed in the slipway (its angle of inclination to the vertical must be the same as that of the base IZH), the engine and rear suspension pendulum mounts, together with part of the standard Izhevsk frame. After that, frame elements are bent from thin-walled steel pipes. Previously, the pipes are stuffed with sifted sand, and the bending points are heated with a gas burner, a blowtorch, or in a forge. Then they are adjusted to the parts and assemblies previously installed on the slipway.

Parts are tacked by welding - each pair with two or three points. After checking the geometry of the frame, final welding is carried out. In this case, it is necessary to control the verticality of the steering column and the perpendicularity of the pendulum axis of the rear wheel suspension to the longitudinal axis of symmetry of the frame. The frame is straightened with heating of the necessary zones.

The mechanism of the retractable support wheels is mounted on the frame frame, which also performs the function of a safety arc. The orientation of the axis of rotation of the rack is shown in the drawing of the frame, however, in the process of working out this node, it makes sense to clarify it. The best way to do this is as follows. First, the retractable landing gear racks are made in accordance with the drawing, after which the swivel units (hinges) are fixed on them, which are temporarily fixed on the frame with clamps or other clamps. Next, the landing gear are transferred to the "released" position and carefully set relative to the plane of symmetry of the machine and in height. With normal compression of the shock absorbers of the machine, the wheels of the retractable chassis touch the ground (with a load of 20 kg with driver, passenger and luggage). In the retracted position, they are located at the same level and symmetrically with respect to the longitudinal axis of the motor vehicle. After all adjustments are completed, the rotary units are first tacked to the frame by welding, and then finally welded.

Single-track motor vehicle Mustang-350
Rice. 1. Single-track motor vehicle "Mustang - 350"

Single-track motor vehicle Mustang-350
Rice. 2. The layout of the "Mustang-350": 1 - telescopic fork of the front wheel (from the IZH motorcycle), 2, 21 - front and rear wheels (from the IZH motorcycle), 3 - headlight, 4 - control pedal unit, 5 - front body fairing , 6 - hinge of the reclining lamp, 7 - casing ("torpedo"), 8 - rack and pinion steering mechanism (from the FDD motorized stroller), 9 - steering wheel, 10 - reclining lamp, 11 - gearshift mechanism rod, 12 - driver's folding backrest, 13 - passenger back, 14 - intermediate shaft with gearshift levers, 15 - sedan frame, 16 - rear fairing of the body, 17 - fuel tank (aluminum canister with a capacity of 10 ... 20 liters), 18 - lower (main) part of the body motosedana, 19 - rear light device, 20 - rear wheel suspension shock absorber (from IZH or Ural motorcycle), 22 - muffler (from IZH motorcycle), 23 - rear wheel suspension pendulum (from IZH motorcycle), 24 - pulley of the starting mechanism devices, 25 - gearshift lever, 26 - vertical gearshift lever, 27 - engine (two-cylinder, two-stroke, liquid-cooled, displacement 350 cc). cm), 28 - retractable landing gear wheel, 29 - driver and passenger seats, 30 - longitudinal link of the landing gear retracting mechanism, 31 - landing gear retracting mechanism lever, 32 - landing gear retracting mechanism handle, 33 - floor and wheel parts niches (plywood 8 mm thick), 34, 36 - front and rear direction indicators (from any motorcycle), 35 - gear shift knob.

Single-track motor vehicle Mustang-350
Rice. 3. Motosedan trolley: 1 - front wheel, 2 - front fork (from IZH motorcycle), 3 - steering lever, 4 - rack and pinion steering mechanism (from FDD motorized stroller), 5 - front docking area, 6 - rear docking area, 7 - upper beam of the frame, 8 - central frame of the frame, 9 - rack of the front engine mounts, 10 - retractable landing gear mount, 11 - front seat mount, 12 - rear seat mount, 13 - rear shock absorber upper mount, 14 - rear shock absorber (from IZH motorcycle), 15 - rear wheel (from IZH motorcycle), 16 - stand, 17 - engine mount and rear wheel pendulum fork, 18 - front engine mounts, 19 - rear wheel pendulum fork (from IZH motorcycle) , 20 - wheel of the retractable landing gear, 21 - leg of the retractable landing gear, 22 - lower beam of the frame, 23 - subframe, 24 - steering wheel, 25 - steering rod, 26 - bracket with the gearshift handle, 27 - bracket for the intermediate shaft of the gearshift mechanism

The landing gear must be extended (or retracted) at the same time, which is what the linkage is designed for. Chassis drive - from the handle located to the left of the driver and having a spring-loaded lever, with which the racks are fixed in one of the selected positions.

The Mustang is controlled by the steering wheel. It is most expedient to use for its drive a rack and pinion mechanism from a motorized carriage FDD, which is fixed on the central beam of the frame. A steering arm is mounted on the front fork, connected to the steering gear rack by a rigid rod with ball joints.

You can also use a simpler drive from the steering shaft to the front fork - cable. In this case, the shaft is installed in a sleeve fixed by welding on the upper beams of the frame. The sleeve itself is a piece of steel pipe with bronze, textolite or fluoroplastic inserts pressed into it. The drive drum of the cable reducer is welded to the shaft - an assembly of two steel disks, between which a textolite or plywood drum with a helical semicircular groove on the surface is bolted.

The driven drum is arranged similarly. To fix it on the feathers of the front wheel fork, it is made split. It is attached to the fork with a pair of bolts and nuts. The ratio of the diameters of the driving and driven drums is approximately 1:2.

Control system - automobile type. The clutch and brake pedals are suspended, the clutch mechanism and front brake are cable driven, the rear brake is driven by a rigid link (as on a basic motorcycle).

The gas pedal is also suspended, the carburetor throttle is driven by a regular cable in a Bowden sheath.

The gearshift lever is installed on the right side of the driver's seat, on the upper beam of the frame. It is connected to the lever on the engine shift shaft by two rigid rods through an intermediate shaft with a pair of levers.

The Mustang engine is started by a handle located under the driver's right hand, under the instrument panel. The drive of the motor trigger shaft is with the help of a nylon cable, two or three turns of which are wound on a drum fixed instead of the standard trigger lever.

The instrument panel is a cluster of instruments from the base motorcycle. Regular and electrical system; the only difference is that instead of one headlight, the Mustang has two.

Well, now about the most important thing, without which the "Mustang-350" would not be a two-wheeled passenger car - about the body. At the motosedan, as mentioned above, it is closed, with a folding cap-lantern. Such a body can be made from almost any material: plywood and hardboard, roofing steel and duralumin, as well as fiberglass using polyester or epoxy resin. The last way is the most interesting. Moreover, if the machine is made in a single copy, it makes sense to use the technology of cutting out the block.

First of all, this requires a master model or, as experts do not call it too respectfully, a blockhead. It is a frame-stringer structure sheathed with hardboard, the surface of which is underestimated in relation to the surface of the future body by 10 ... 15 mm. The final finishing of the body - with the help of plasticine, non-hardening window putty or gypsum. As a rule, they first work on the right (or left) half of the body, and only then, having removed several plywood templates from it, do they move on to the symmetrical other half. When creating a blockhead, it is necessary to provide for recesses that form stiffening elements during gluing. After the final processing of the blockhead, its surface is covered with wax parquet mastic and polished.

The body shell is peeled off in a dry, well-ventilated area or outdoors in warm, dry weather. For the first layers, it is recommended to use glass matting, for finishing - thin fiberglass satin weave. Recesses to increase rigidity are first pasted over with a pair of layers of fiberglass and filled with foam. The latter is processed flush with the surface of the shell, after which the gluing of the body continues.

For purely technological reasons, the body is divided into its lower part, a lantern, rear and front fairings. Accordingly, all these elements are molded on one block in several stages: first, the lower part - while the rails are fixed along the line of joining the body and the lantern, and then, after the rails are dismantled, the front and rear fairings, and lastly - the lantern.

After the formation of the shell with a thickness of 3...4 mm, the gluing is completed, and in a day the body blank can be removed from the block. Keep in mind that most often this can only be done by breaking the blockhead, so already during its manufacture, provide for areas that will be easy to remove without risking damage to the fiberglass shell.

The final finishing of the body - after installing it on the frame. By the way, docking devices should be quick-release - this will greatly facilitate the operation and repair of the scooter units.

At the end, the shell is carefully puttied and sanded, the necessary holes and windows are cut in it, a folding lantern is adjusted and mounted, and glazing is installed. This is followed by painting in several layers with intermediate sanding and sanding.

The side windows are cut out of organic glass 3...4 mm thick. The windshield (tempered or triplex) is fixed with epoxy glue and fiberglass strips.

The inner surface of the cabin is pasted over with foam plastic, fiberglass and, at the last stage, trimmed with artificial leather (a fabric that matches the texture is also suitable).

Cabin floor - plywood 6...8 mm thick, treated with hot drying oil. A niche for the front wheel is also glued out of plywood. The driver and passenger seats are made of plywood, porous rubber and artificial leather. Please note that the front seatback is mounted on a single pillar that can be folded forward, making it easier for passengers to get on and off.

Driving the Mustang is as easy as riding a regular motorcycle. The use of a retractable landing gear, as a rule, does not cause difficulties; in an hour or two, when the speed drops below the permissible level, you will transfer the chassis to the "released" position as naturally as the driver lowers his leg, holding the stopped motorcycle.

Author: I.Mevnik

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