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Mechanical toy

by anthonyz
Tags: mechanical
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anthonyz
#1
Jun4-07, 08:03 AM
P: 2
Hello, I need to build a toy car, that will perform the following task:
Go in a staight line for 5 meters, then follow a semi-circunference (or just turn 180 degrees, but not a about-turn) and go back another 5meters, the turning is around a cone:

_____________________________________ ---> boundaries

------------>------->-------\


-------------------cone ---> 0 |


----------< -----------<----/

_____________________________________

I am supplied with a electrical engine, and 3 1.5V batteries, I am not allowed to use any other power source, however I can use pretty much any mechanical or electical device I desire (no remote controls, the car needs to perform on it's own)

I am aware that this is a very simple task, for engineering, but I am in my 1st year and have pretty much only had mathematical classes (calculus, linear algebra, phisics, computing etc) so I am not familiar with the electrical circuits that may accomplish this task....have been brainstorming mechanical solutions for a while now, but nothing really good has come up..

The problem is that the car needs to have 2 operating "modes" : go straight -- turn...and I need to be able to switch between these modes...

Any suggestions would be very welcome :)
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DaveC426913
#2
Jun4-07, 08:47 AM
DaveC426913's Avatar
P: 15,319
1] You could stick a long bar out the right side of the car that hits the cone and do a sharp turn - Batmobile-style. Just an idea for thinking outside the box.

2] You could use a cam to control the steering (see attached).
Attached Thumbnails
cam_steering.gif  
anthonyz
#3
Jun4-07, 08:57 AM
P: 2
can u send it via pm?i cant see the image...explain more on the 2nd way...seems intresting..

Cornellian
#4
Jun6-07, 08:50 PM
P: 9
Mechanical toy

Use the motor to drive the car and use it so that it turns the tires on 2 different sides in such a manner so that at the right time they turn in opposite direction and you can make a 180 degree turn. Think about how a Tank turns....


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