They say that reinventing the wheel is a thankless job. And yet… And yet… This structurally polished for many decades, the car never ceases to excite minds of inventors. Remember that “Bicycle” in Greek means “quick feet”. But why only nohn? Then there are the hands. Can’t force them to use more traction? At the same time it n practice for them. PEDAL PLUS LEVER.
Made me easy simple and reliable manual nozzle has proved itself in practice and can be attached to any bike with a triangular frame. It operates on the principle of converting the reciprocating oscillatory movements of the hand lever into rotation of the connecting rod foot pedal actuator. With one hand (left or right) holds the steering wheel, and the other works.
The nozzle consists of duplicera lever, bent out of half-inch water pipe, at the end of which is placed a standard Belorusochka. To the lever at the bend welded ring-bearing, through which threaded axle with a diameter of 8 mm with a locking washer on the end. Resistant semicircular clip made of sheet steel with a thickness of 3…5 mm on the tube diameter of the bike frame n welded to the axle. It has a basic dynamic load during operation. On the threaded end of the core tightly screwed nut M8.
To install the nozzle it is only necessary to drill into the top tube of the frame hole with a diameter of 8 mm, which practically does not reduce the strength of the frame. To the second, flattened with a hammer the end of the lever is pivotally attached hard thrust. It can be manufactured by bending in the form of the letter P steel strip with thickness 1…2 mm. At the lower end of the pull rod by rivets or welding is mounted sickle seizure of steel (3 mm thick) with a C-shaped groove into which is inserted the neck of a shaft of a pedal of a Bicycle. There is fixed the end of the non-rigid (e.g., expander) of the spring associated with the seat.
As can be seen from the figure, the nozzle is located between the legs of velosipedista and does not prevent him to pedal. It allows alternately to connect to the n hands. When the left holds the steering wheel, right-operates as from himself, and to himself, turning the thrust through the connecting rod treadle. Capture can be easily disengaged from trnsmssn, bringing it through the slot in the groove. Spring will automatically bring the nozzle in a compact non-operating position.
The piece I use for a long time — mostly PRN to ride with cargo on the road bike on a hilly terrain at low speeds.
SHIELD and ARMOR
Probably every cyclist in cold windy weather feels secret envy for the drivers, which fears neither wind nor cold, and which effectively shelters it from the weather cab. Is it possible to equip the bike at least the wind shield such as, for example, on motorcycles? It is possible and not too difficult.
For the past two Osennie-winter seasons I put on my bike easily removable a simple front flap, consisting of only two parts: the apron from aluminum sheet thickness 1…2 mm and a length of 1500 mm n rectangular window made of organic glass. This technologically advanced design made with original steering wheel, which is installed recently on racing bikes. But in principle, it is also suitable for road bikes of all brands. Flap protects from cold flow, can dramatically reduce the static load on the spine, facilitates pedaling reduces the resistance of the air.
Fig. 1. Manual drive for a Bicycle:
1 — duplici lever (steel pipe 1/2″), 2 — arm (Belorus), 3 — ring-bearing, 4 – axis, 5 — lock washer, 6 — stop bracket. 7 — nut M8, 8 — thrust (steel strip thickness 1…2 mm), 9 — grip (steel strip with a thickness of 3 mm), 10 — return spring (from the expander).
Fig. 2. Wind deflector bike:
1 — apron (duralumin sheet thickness 1…2 mm), 2 — glass (organic glass 3 mm thick), 3 — wheel, 4 — tubular brackets, 5 — arm, 6 — arm, 7 — gasket (foam), 8 — wire mounting for the apron, 9 — loop, 10 — fastening screws of the armrests 11 — rubber gasket, 12 — cutout under the steering column 13 — fork of the front wheel 14 front mud flap, 15 — wire tie 16 — tie fastening glass.
R and S. 3. The mechanism of change of gear ratio for road bike:
1 — remote ring, 2 — the lever of switching of transmissions. 3 — spring compensator, 4 – star (z= 15), 5 — star (z=19), 6 — sprocket (z=26), retaining ring 7, ring 8 remote control, 9 — frame, 10 — axle rear wheel, 11 — sleeve 12 — special nut, 13 — rod special nut, 14 — arm. 15 — spiral groove, 16 — lower part of the circuit, the 17 — sprocket bike, 18 — roller, 19 — shank-axis, 20 — pin, 21 — spring.
If you weld to the usual steering wheel two curved half-inch pipe, arm them with arms and set them on the armrests, bent from thin aluminum sheet with foam pads, the ride comfort will increase significantly. To attach the fairing to this steering wheel is very easy. Enough to take two segments of wire with loops at the ends and threading through NH vnty mounting of the armrests, and then twist the exposed portion of the wire outside on the flap, previously letting it through the rubber gasket and bracket ready. The apron should be cut through with a chisel another hole 0 33 mm under the axle fork. The lower end of the apron is drawn to the front fender wire tie. The same coupler can be fixed and the glass.
I think you’ll appreciate this visor when riding in cold WEATHER
THREE SPEED ROAD
Who of NZ enthusiasts Cycling tours have not experienced muscle satisfaction from riding on multi-speed bicycles legkomotornyh? One arm movement — and you can easily drive to the mountain nln playfully racing on smooth highway. Unfortunately, these bikes are increasingly rare to see on sale. However, to turn any road bike into a three-speed, while maintaining the ability of the braking pedals is not so difficult.
The figures show a device of self-made switch gear. It consists of a multistage sprocket, lever and spring compensator circuit. Sprocket 15 teeth taken from “salute” (they sometimes are on sale) sprocket 19 teeth — from a regular road bike; sprocket 26 teeth — from the old children’s bike. In the last two sprockets inner diameter protectives to a diameter of 42 mm, to provide access to the lock ring. Between the stars are laid ring bent from wire 0 5 mm, and then prihvatyvayut welding rings and stars — and the unit is ready. Between the frame and the axle of the rear wheel is laid bushing, and the axle is tightened by the special nut with the rod, on which is elastically mounted shift lever made of steel wire 4 mm in diameter with a handle and a spiral end of the groove, which introduced the chain. Turning the lever, you can shift the lower part of the chain from one sprocket to the other, slowly rotating the cranks, as in luggageroom bike. Precise adjustment and adjustment of the shape of the lever is at.
On the big asterisk is freely set the spring compensator covering and the biasing chain. It consists of two rollers, a freely recorded on a bronze rods pins. The ends of the rods are tightened the two springs that keep tension on the chain when pedaling and braking.
V. GAVRILOV, village of Inozemtsev, O. Stavropol Krai Recommend to read HOW to MAKE a GUY for the fifth year I subscribe to your magazine and I like it very much. It is always possible to choose good advice, interesting drawing. I am engaged in ship modeling circle at the... HOUSE-TRIPTYCH On the garden or vegetable part does not need a capital house — often a small cost easy structure type outbuilding. In such an environment feel the need for the country part, starting n...