Puch Motorbike Draisine
X711
llm/G, 1:22,5
Puch Motorbike Draisine
The Model
llm/G, 1:22,5
The prototype is a two-seater inspection vehicle originally (1930) manufactured by Daimler and later by Puch. In total, about 100 of these vehicles were delivered for various gauge widths. On all vehicles, the originalDaimler engine was replaced by a Puch motorcycle engine (125 or 250 ccm, air-cooled, 1 or 2 cylinders). The vehicle was made for gauge widths of 750 mm or wider. ÖBB, the Austrian railways, deployed 760 mm narrow-gauge and standardgauge vehicles for up to 50 years. Today, some 10 vehicles are being preserved in museums, a few of which are still operative. In some museum railways and railway museums they can be viewed by the public (local museum at Mariazell, Hirschwang museum railway, railway museum at St.Veit/Glan, ...). The Puch rail motorbike is kick-started. It features several forward gears but no reverse gear. To turn the vehicle, a pivot, controlled by a large lever on the right-hand side, can be lowered beneath its centre of gravity and the vehicle swivelled around it by one operator. The front axle is chain-driven. The draisine operated by the Hirschwang (Lower Austria) museum railway reaches a maximum speed of about 80 km/h (vehiclemass: 320 kg; engine rating: 12 HP).The vehicle brakes are two levers fixed on the sides of the vehicle chassis which, via connecting rods, act on the axles’ band brakes. By closing the exhaust pipe, the exhaust gases can be routed to a whistle. The acoustic signal is activated by operating a level located to the left of the driver’s seat. The clutch and the carburettor throttle are controlled via the two foot pedals. The tank is mounted above the engine, inthe middle of theengine hood. The only weather protection for operators is a simple windscreen. The seats are made of tubular steel and covered with a textile fabric. The headlight is positioned in front of the engine hood. The rear end is fitted with one white and one red tail light. The electric system is powered by a battery placed under the back seat. Behind the front seat, small containers are provided for tools right and left. The dashboard comes only with the bare necessities, including an ignition lock, a light switch, and control lights. In addition, there is a control for the air filter inlet, a fuel cock, a ventilating valve for the carburettor float chamber, a decompression lever for shutting down the engine, and, on some vehicles, an electric horn that was not part of the original accessories. The draisines were usually painted in very bright colours. All of the vehicles preserved to that date have yellow liveries, the steel tubes of the seats are painted red, windscreen frames are yellow, red or black. The seat covers were originally blue, grey, or green. As the material was rapidly soiled, it usually had a black appearance. On some museum vehicles, the textile covers have been painted yellow.
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The model consists basically of UV-resistant and impact-resistant injection-moulded parts (polystyrene). The motor is a direct-current bell-type rotor motor (Faulhaber 1016). As on the prototype, power is transmitted to the front axle bymeansof an O-ring (internal diameter 12 mm, diameter of string: 1 mm). The metal wheels are fitted with near-frictionless 3x7x3 ball bearings. The rear axle is slightly resilient to ensure proper wheel-to-rail contact. The finely engraved model, engineered with precision to the 1:22.5 scale, features additional details made of etched parts. As with the prototype, the wood block provided can be used to take up the spherical end of the pivot. Themodel comes with a total of 4 movable levers. On the model, the function of the two brake levers is only decorative, while the lever lowering the pivot operates in exactly the samemanner as on the original. On the model, the gear lever serves as the power on-off switch. This makes it possible to park the model even on current-carrying rail sections. The model is not lit to avoid losing the flywheel effect on non-current-carrying (soiled) sections of track due to the motor’s generator effect.
ON-OFF
Operation
Themodel can be operated with the usual CD control unit. In continuous operation, a voltage of 12 V= should not be exceeded. For brief periods, the motor can take 18 V=, very briefly even 24 V=. When the motor is operated at a higher voltage for too long, it may heat up considerably and finally break down. Too high voltages reduce the motor’s service life. An overheated motor may also damage plastic parts. Do not use the model at temperatures above 60°C or below 0°C. High temperatures may cause the plastic parts to soften and deform, low temperatures may cause brittleness in the plastic parts. WARNING: When models are kept in
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showcases exposed to sunlight or placed on window sills or near heating, the maximum permissible temperature may quickly be exceeded! The model has been tested on commercially available 45 mm gauge garden railway track. As the model features a large number of small parts it is NOT SUITABLE for small children. Careless handling may cause parts to break off, small parts might be swallowed by children. Older children should use the model only when supervised by adults. The running properties have been designed to be as similar to the prototype’s as possible. Excessive speeding in bends may cause the model to derail. Uphill, the model – like the prototype slows down, downhill, the model accelerateswhenthecontrol setting is kept constant. Like the prototype, the model is not designed to pull rolling stock. Always operate the model on clean rails. Do not operate the model in rain as too much humidity may lead to corrosion of metal parts, which could impair current conduction. As the model has no brakes it may roll downhill on steep sections even when not under power.
Replacing the motor
Slide the two front headlight supports (metal) off the rods, towards the front. Then pull the engine hood upwards off the chassis. Take off the two exhaust pipes (silicon tubes). Lift the imitation engine by pulling it upwards. Unsolder the two motor connectors. Take the O-ring off the pulley. Then slide the motor out of its bracket by pulling it upwards at anangle. To mount themotor, proceed in reverse order.
Replacing the drive belt
To replace the drive belt, press the drive axle together with the bearings gently, but firmly, downwards out of the chassis. Place a new O-ring (12x1) onto the axle. Replace the axle, taking care to establish good contact between the contact spring and the bearings (current transmission). Place the new O-ring onto the pulleys (seeReplacing the Motor).
The model does not run: Maintenance
Keep wheels and contacts clean. Do not allow the transmission belt, which - as on the prototype – is exposed to become soiled. When the model is not operated for an extended period (showcase), remove the drive belt from the pulley to relieve tension on the belt. Lubrication should NOT be necessary. Keep both pulleys and the drive belt clean, dry and dustfree atall times. A delicate model should always be handled gently. Switch on the power, turn on the control, check the connection to the mains, remove any dirt, replace the motor, replace the drive belt.
Drivebelt too loose:
Fit new O-ring, clean pulleys (be careful to keep free from any grease).
Model derails:
Check track, reduce speed at this point. The clearance between the wheels should be 40 mm.
Part has come off:
Glue in place using model glue (plastic glue, polystyrene glue).
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Ti-H0 Modellspielwaren Schreyergasse 20 A-2700 Wiener Neustadt Österreich
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