
Important: the program described below runs under Mac OS 7 to 9 only. If you use another operating system (Windows, Mac OS X, Linux), please se my list of 3-D physics animations (Quicktime and AVI files).
YP Gear has been designed for the study of gear trains. This Macintosh software simulates the motion of a gear train composed of 2, 3 or 4 gears. The user controls the size of each gear.
Important: Customers who already purchased "YP Planetary Gear" don't have to pay for "YP Gear": both programs are unlocked with the same code. Furthermore, when you buy "YP Gear", you automatically get a user license for "YP Planetary Gear" for free.

Required Hardware and Software: YP Gear runs on any Macintosh computer with MAC OS 7, 8 or 9. It needs about 315 Kb on your hard disk and 1,2 Mb of RAM. The software runs on older models with 68000 processors (Mac Plus, Mac Classic), but simulations are slower.
Please click on button below to purchase YP Gear at the new reduced price of $5. Before purchasing, please download the program and make sure it fits all your needs. You will receive the unlocking code by email in the following days.
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