So, the engineer of mechanization of the Belarusian automobile plant N. Sokolowski drew our publications manual drive, allowing for the movement not only the strength of the feet and hands. All at” used to inhabit the log scheme was “tied” to front” wheel. In this case, the designers had to solve an additional problem: the actuator does not obstruct the operation of the machine, attempts to merge or replace the wheel levers of the manual drive. I. Sokolovsky went even further. Why the drive should be aimed at the front wheel? After all, to help the legs and on the shaft of the drive sprocket. However, this will stretch the car in length, and as over the counter drive to reach the helm? But who said that you can only manage the wheel? There is another new solution: the steering is… the saddle. Yes, Yes! The original image is a feature of the two-wheeled machine— the need of the torso when turning; swivel saddle through a yoke and thrust acts on the crossmember, steering column, turning the wheel. Is it comfortable? Sokolowski riding his bike for the third season, the machine is happy: practice has shown the viability of the ideas. Although the author critically notes and certain costs: too big dimensions and weight, lower capacity, worse than the average bike, cross-country off-road.
On that two-wheeled scheme far from exhausted, says the work of many fans of pedal technique. Fruitful and interesting work in this direction is a great enthusiast and the Creator of the original two-wheeled machines V. Askin from Tashkent. We have already introduced the readers with an unusual scooter, which is both microbiocidal (see “M-K” No. 10 of 1982). They created a whole range of such structures, designed for children and adolescents. The main thrust of the technical development here is the creation of extremely compact, lightweight, comfortable, modern micromachines on the basis of the smallest wheels, samokatnaya “Dutikow”.
That teen bike with an unusual frame, made of two parallel curved tubes, assuming the rack and front wheel, and a clip pedals, rear wheel and seat post. Despite the small wheels, micro machine readily adaptable to any increase in the adjustable with a large stock of rods of the seat and steering wheel. It is interesting that, given the “address” of their structures, V. Askin in most cases waives the usual and for children’s Bicycle wheels with spokes, as for the hard drive, typical for teenagers, offering instead “cast or stamped: no needles not fly, nor “eight” does not appear. The front and back provides lightweight, metal basket: the bike is not only fun, but also commercial transportation to perform all possible teenager orders.
Fig. 8. Train bike
Fig. 9. Spark with a hard body in the middle
Fig. 10. Bike with sidecar and optional manual transmission on the front wheel
Fig. 11. Bike:
1 – the connection node of the front fork and frame, 2 – frame, 3 – pad-pedal, 4 – crank – axle rear wheels
A variant of this machine bike with a front foot drive. Here we find a more convenient layout of the nodes. The carriage with the pedals moved to the top of the front fork; short circuit goes to the rear wheel and to the front: it can be rearranged back. However, it should be noted that when predprosmotrom the drive seat must have a back — focus under heavy pressure on the pedals.
By the way, note that the ka of all their models, designer from Tashkent refuses traditional padded Cycling saddle, replacing it technoplastics. Latest modern and technologically advanced (in Amateur terms may be laminated of fiberglass), more wear-resisting, not afraid of water. Simplified his design; as microcomputers designed for good roads, the mount seat can be tough.
And another development V. Askina: a Bicycle built for two — tandem. He has a horizontal elongated loop-shaped frame, to which are welded fork front and rear wheels, stand seats (front and she stand for V-shaped handles for the rear rider), two of the carriage. The latter with the right side of the two small sprockets are connected by chain, through which sdvigaetsya force both cyclists and with a large sprocket on the left side of the rear of the carriage is transmitted to the rear wheel.
And our young reader Sergey Shitov from the village Kochubeevskogo of the Stavropol territory decided to make an ordinary bike ride— on rails—under construction or under repair train tracks. Tempting, isn’t it? This would allow off-road without the hassle of getting to work, and with the ground support wheel of the second rail — deliver small loads, tools. It does not have to change the design of existing Bicycle, and only equip it with necessary additions. To keep the wheels on the narrow strip of rail, it must find in favour of the bus drive-a cheek or a ring flange; the front also — any retainer, eliminating the possibility of inadvertent rotation. To maintain balance in such conditions would require a little extra support wheel on the second rail with flange and tie-rod from the axis to the frame of the bike.
But it only needs to be two-wheeled pedal cars? Three wheel habitually associated in our minds with childhood, with a period of training our vestibular system, preparing the body to balance motion on two wheels. However, more and more Amateur and professional designers look at the tricycles scheme as an adult and, moreover, very promising. Especially for elderly: editorial mail periodically brings confirmation — these bikes need. Tricycle pedal car, of course, more sustainable and, in this respect, for many a convenient. Here, obviously, it would be possible combined options, as some of the children’s “tricycle”: a basic, two-wheeled, the bike would have any extension axis of the rear wheel to install in case you need more, the third.
Another area of use of the tricycle scheme is to equip regular road bike comfortable a side car with his wheel, such as motorcycles. Some of them we wrote in our section “the Panorama”. For example, the Amateur Bicycle travel V. Kramar I from Vyshgorod Kiev region built rigid wheelchair with a monocoque body connected to the Bicycle frame at two points.
However, the trailer will inevitably increase the weight of the bike, aggravating the course and impeding movement, especially on the climbs. No accident, obviously, the following design V. Cramra was the spark of two bikes with a rigid wooden body between them. Of course, the two riders eased their drive, but is it really needed connecting them heavy box that served as verhaltensanalyse… trunk. Because a bunch of frames, and cargo packaging could be more lightweight and less reliable.
The other way went P. Stanevsky from the village of Kuibyshev, Zaporozhye region. His stroller has a tubular frame with lightweight but durable covering of thin sheet metal riveted: it was comfortable and fairly roomy basket that fits two children or cargo. The carriage is mounted to the Bicycle frame at four points. To facilitate the drive, especially with the load and on roads with climbs, the bike has a derailleur and three stars on the back sleeve: 28, 24 and 19 teeth and 19 teeth on the leading pedal sprocket. In addition, it is possible to the efforts of the legs to add power hands: on the front fork and the steering wheel mounted manual drive on the front wheel under the simplified scheme: the carriage with pedals for the hands and chain drive to the sprocket of the front wheel. Sprocket drive 19 teeth on the driven wheel 41. This addition makes it easy to climb with a stroller and on a steep hill, and if necessary to transport to the hundredweight of cargo.
There is another direction in the development of three schemes: the establishment of the transport training designs, Bicycle-trainers, combining transport and sporting functions. The simplest and most affordable option of the exercise bike of this type — a three-wheeled machine, we offer E. Rusakov from Ryazan. She had no saddle, no pedals and familiar. One becomes two uneven pad between the two rear wheels, holding the wheel begins to cross them, as if stepping. And, because pad their bushings mounted on the knee of the crank — axle of the rear wheels, they are rotated: one goes along with those rides, converting the weight into a driving force. The designer has provided another option when the crank is taken out in the middle of the frame and rotates the sprocket, which is chain transfer to intermediate, and from it to the sprocket axis of the rear wheels. It is possible to use the switch gear and between the rear wheels to install the cargo area.
The most interesting area of advanced structures pedal cars — pedal cars. They are now mostly three – and four-wheeled versions. Advantages or disadvantages of these schemes, the features of their devices — a topic of much conversation, to which we will return in our future publications.
Thus, the invention of the Bicycle continues. Looking forward to your new posts, enthusiasts pedal technique!
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