A model of the simplest form of D.C. electric motor, having 2-pole armature wound with enamelled copper wire and a permanent magnetic field provided by a removable bar magnet.
A disc-type commutator is incorporated and external connection to the phosphor-bronze bushes is by means of a pair of 4 mm. sockets.
The motor will operates on 6-8 Volts D.C.
For showing the conversion from electrical energy via mechanical, to potential energy by winding up a weight on a cord.
One end of the 6mm.
steel shaft carries an aluminium 'V' pulley 56 mm.
diameter, and the other end is fitted with a cord anchoring collar.
Supplied complete with driving belt.
This model uses the same basic assembly as the motor, but is mounted on a baseplate 230 x 90 mm approx.
which also carries a hand-drive pulley 120mm.
diameter coupled to the smaller dynamo pulley by a rubber belt to give a step-up ration.
Electrical output is via a pair of 4mm sockets.
The model may also be used as a motor on a 6-8 V D.C. supply.
A model of two-stroke diesel engine made in aluminium alloy and gun metal.
Ignition is shown by means of a miniature bulb. Fuel supply is also sectioned.
With hand crank, provided for manual operation.
Mounted on base.
Determination of charge on a electron by measuring a known distance on the basis of number of times of fall under gravity and of rise in uniform vertical electrostatic field in a series of charged oil drops.
Represents internal structure and operating principles of an air cooled two-stroke engine.
All parts in aluminium alloy.
Ignition is shown by means of a miniature bulb.
Carburetter and fuel supply also sectioned. Mounted on base with printed diagram showing working.
Two-Stroke Petrol Engine Four-Stroke Petrol Engine are also available.
Reviews
There are no reviews yet.