Final Output


Link to dl my .ma file
https://drive.google.com/file/d/0B60PDNnWOOFfYk1yS09yMjJPLXc/edit?usp=sharing

Play-blast of my gears spinning.

136128z_TanFuLin_Assign02_Report

TD assignment

Tan Fu Lin 13128z

Gears. I’ll explain in details how I model and get the gears up and working. Is actually quite simple.

First I created the smallest gear with the radius of 5 and subdivision of 10. Height doesn’t matters much.

Every next set I plus 5 to the radius and 10 to subdivision. I’ll list a table below.

	Small	Medium	Large	XLarge
Radius	5	10	15	20
Subdivision	10	20	30	40

I follow this to create my gears. Now to the part how I make the gears spin with expression. GET READY!

The smaller circle is 10 subdivision(CG) and the larger one is 20 subdivision(CG).

Note: 20CG is 2x faster than 10CG is the same as 10CG is 2x slower than 20CG.

The image above both gears are rotating at 90 degree over 25 frames(PAL) both are rotating at the same speed but clearly 20CG is clearly further than 10CG. Therefore the teeth on 20CG is 2x faster than the teeth 10CG.

The image above is all the CG. You can create CG bigger than this but I find 4 different types of gear is sufficient for the project. In the later part of my report I created the 60CG with the teeth extrude inwards. I will explain that in a moment.

Note:

 40CG is rotating 4 times slower than 10CG = 10CG is rotating 4 times faster than 40CG 

 10CG is rotating 3 times faster than 30CG = 30CG is rotating 3 times slower than 10CG 

 20CG is rotating 2 times faster than 40CG = 40CG is rotating 2 times slower than 20CG

Created all this gear to form the word JOHN.

How do I create this O?

Is almost similar to the previous gears just need some tuning. First I created 1x20CG and 1x10CG. I add them up so the outside ring need to be 30CG. Created that and need to make sure the diameter is the same if I add up 20CG and 10CG.

 Example of my expression for the O.