“It’s time my childhood fell on the difficult post — war years, begins his letter to the editor M. I. Psarev. Toys we then did ourselves. Apparently, this brought me love design — all my life I’m not breaking up with tools, metal, wood and, of course, pencil and paper. Here came the second half of life, and the desire to rukovodstvu not quenched, but flares up sometimes with such force that you forget about everything”.
A lot of interesting cars built during his life, Mikhail Ignatievich. And each brought him great satisfaction as a result of the objectification of plan. “The design I always thought the best vacation, — writes further M. I. Psarev, so almost all free time devote to the beloved.
My first successful design development — children’s scooter with melodygate D-4, built for his son. Then the little car with the same engine and a plywood body.
Stage I think that 1966 is the year of transformation “Modeller-designer” in the monthly publication. This year my passion for Amateur construction has taken a firm basis in reality, I had the opportunity to compare their own searches with the development of like-minded people — other enthusiasts, like me, to borrow the most interesting technical solutions.
Most of all I am interested in snowmobile technology. The fact that I live in the city of Tchaikovsky, Perm region. It is located on the shores of the Votkinsk reservoir. Many of us are addicted to ice fishing, are no exception and I’m. As luck would have it, the best fishing places are far away — five to ten kilometers. Start with drawings, published in “M-K”, I built motorenko with engine D-5. It was a good car, but it soon had to be abandoned: on the roads it ran quite briskly, but on loose snow could barely move.
After weighing the possibilities, he began to build the first snowmobile with engine PD-10. I must say that these sleds “to mind” to bring the failed design was awkward and cumbersome. About the wasted work and the lost time I have no regrets, because without that experience I have hardly turned the other sled, this time with the engine IZH-49. The design came out quite healthy, and at first even satisfy me. To that’s how people with eternal dissatisfaction — not having how to break in these, began to figure out the layout of new sledge — easier, more convenient and fast.
I designed them under the engine of the motorcycle “Panama-3”. That sled turned out the light, I set myself the task more economical use of metal. And reached the goal. Snowmobile with the engine weighed about 80 kg, developed good speed and passability of them were quite satisfactory.
Fig. 1. Snowmobile PM-2
At that time, “M-K” often published descriptions motoart Amateur-built. I decided to try their hand. My snowmobile was not like motonarty in the modern sense of the word — in the back he had two skis, and the front — drive sprocket drum. Two years I spent in the construction of this machine, and, unfortunately, wasted. On soft snow, she never went and rolled crawled at a snail’s pace. Where to snowmobile!
And back to work. Decided to go back to the snowmobile, but not familiar to me already of the scheme, and to the snowmobile-amphibian. The engine initially decided to do two upgraded PD-10. At home was cast in aluminum crankcases, the cylinders were replaced by others from the motor IZH-SW. But, unfortunately, to start the engine failed. The lack of experience, machine base…
Following the snowmobile I designed for the engine of the motorcycle M-72. The main problem was the gearbox, but managed to solve it. By this time, we formed a small team of Amateurs Amateur aerosanitary, and a reducer was needed by many of my comrades. Joint efforts had made a few pieces. One of them quite well working on my snowmobile, to get the index of PM-4. The car was good, with dural three-bladed variable-pitch propeller, skiing and in summer you can replace the wheels.
Currently working on the implementation of a long his plan, you want to build a snowmobile-amphibian.
PM-2
Despite the serial production of crawler motophoto, snowmobiles have continued to attract Amateur designers. Every winter, hundreds of new light rapid machines with the air screw out on the snowy expanses. Design, as we discuss today in the collection “Series is “P”, attracted by the ease of implementation, rationality of solutions and good performance.
The case of a sled carrying. Frames made from pine slats with a cross-section 25×45 mm, and stringers from thin-walled steel pipe Ø 18 mm and wooden slats with a cross section of 18X25 mm. Outside the housing lined with three-millimeter plywood.
The sub frame is welded from water pipes Ø 20 and 25 mm. wooden Skis with a plastic sole, cushioned shock absorbers of the motorcycle “Voskhod”.
The engine of the motorcycle IZH-49. To adapt it to the snowmobile, had to remove part of the gears of the transmission to turn the shaft for the propeller and dural glass. The clutch and kick starter I saved, which is very convenient for starting the engine.
Sleigh these served me for about two years, their only drawback was a relatively high Center of gravity because of poorly located engine, which significantly reduces cornering stability.
PM-3
This car, in General, similar to the previous one, but its stability on turns is higher due to low located centre of gravity. The body of the snowmobile hardwood, pine sticks and plywood. The exception is the sub frame is integral with the rear transverse beam of steel pipes.
Fig. 2. Snowmobile PM-3:
1 — spring, 2 — steering, 3 — tie rod 4 — brake handle 5 — steering wheel, 6 — magneto, 7 — arm kick starter, 8 — bearing housing 9 to the shaft of the propeller 10 — tensioning roller, 11 — fuel tank 12 — under engine frame, 13 — motor, 14 — guard screw 15 — driven pulley, 16 — shock absorber (from a motorcycle “Voskhod”), 17 — rocking chair 18 — scraper brake, 19 — drive pulley, 20 — pine frame rails.
The propeller and engine crankshaft V-belt connects the transmission with trehochkovymi pulleys. The gear ratio is approximately 1:2. The engine of the motorcycle “planet-3”. Skis from birch planks, with a plastic sole. Brake scraper type. The speed of the snowmobile to 60 km/h.
PM-4
This sled is my latest creation where I tried to consider the mistakes and shortcomings encountered in the previous designs.
Snowmobile PM-4 double, with a closed monocoque body. The frame is wooden, with plywood sheathing. The hinged part of the lamp is curved from aluminum sheet of thickness 1 mm. the Ski is made of duralumin tubes with Ø 150 mm, reinforced sole of each two-millimeter aluminum sheet and covered with polyethylene.
Fig. 3. Snowmobile PM-4:
1 — pump, 2 — arm kick starter, 3 — tank, 4 — battery, 5 — arm clutch, 6 — brake handle, 7 — throttle, 8 — headlight, 9 — towing bracket, 10 — front fork (from scooter “Vyatka”), 11 — scraper brake, 12 — absorber (from scooter “Vyatka”)
The engine of the motorcycle M-72. Installed it through the rubber gasket on the small underframe. Gearbox were removed, and instead involved the gearbox of his own design, which reduces by half the frequency of rotation of the driven shaft. Using the pump helped to set the fuel tank down in the trunk.
Design of the chassis provides the installation of the skis instead of the wheels of the scooter that allows you to operate the snowmobile in the summer.
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“It’s time my childhood fell on the difficult post — war years, begins his letter to the editor M. I. Psarev. Toys we then did ourselves. Apparently, this brought me love design — all my life I’m not breaking up with tools, metal, wood and, of course, pencil and paper. Here came the second half of life, and the desire to rukovodstvu not quenched, but flares up sometimes with such force that you forget about everything”.