Title
Buggy adding power
Description
Year 7 Modified Curriculum
Key Stage 3
Area Making Skills
Level 1
Objectives
To demonstrate the use of rubber bands, wind power and electric motors and battery to power the buggy.
Equipment Required
Rubber bands, electric motors, batteries, wire, drawing pins, paper clips, soldering iron and solder, small section jelutong, wind machine (6v max) and a selection of woodworking tools.
Richard Murray
Abbey Hill School Technology College
Plan
Tap a small panel pin into the rear axle of the buggy and use a drawing pin to hold a rubber band in place on the front bumper. Hook the rubber band over the panel pin and wind up the wheels in reverse. Place the buggy on the bench while the students watch and release the rear wheels. If the buggy has been constructed from heavier section jelutong, it will run along the bench. If the jelutong is thinner section you will get and impressive amount of wheel spin. How can we make it run properly:-
Rubber band tyres....................very fiddly and they
can't put them on. Try copydex!!!
More weight...............................washers scrap wood plasticene
Glass paper tyres.....................more manageable but doesn't give much
grip.
Sails can be added with logo on a crossmember drilled to take a dowel mast. Paper works very well but card is better and allows 'tacking' across the wind if the sail is angled and tied.
Electric motors may be used with a rubber band and pulley transmission. Pulley can be built up from two large and one smaller wheel or from two wheels glued together and and grooved with an abrafile.
The motor part of the project can only be completed if there is sufficient time and you are teaching a whizz kid who is much quicker than the rest and can therefore finish this while the others are completing sails.
All modifications should be shown in the work book.
