tag:blogger.com,1999:blog-3662509960113735055.post1254494882946136995..comments2023-04-24T22:10:15.143-07:00Comments on Laird OnTechnology: My $1 Plastic Toy Car has a Metal Flywheel and a Plastic GearboxPeter Lairdhttp://www.blogger.com/profile/03129951400907428207noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3662509960113735055.post-66826974858928383652013-08-06T02:08:19.674-07:002013-08-06T02:08:19.674-07:00I made some marks on the wheel and the flywheel, a...I made some marks on the wheel and the flywheel, and started spinning.<br /><a href="http://www.hemcoind.com/gangway.html" rel="nofollow">Gangway</a>hemcoinedhttps://www.blogger.com/profile/10947273467727961373noreply@blogger.comtag:blogger.com,1999:blog-3662509960113735055.post-22869427704079729112010-05-31T23:23:08.205-07:002010-05-31T23:23:08.205-07:00OK this was driving me nuts...
I found it wasn...OK this was driving me nuts...<br /><br />I found it wasn't that hard to pull apart the gearbox (and was even able to put it back together!). This allowed me to get all scientific on this...<br /><br />Actual tooth counts:<br />Cog 1: 32<br />Cog 2 Input: 8<br />Cog 2 Output: 30<br />Cog 3 Input: 8<br /><br />Which means:<br />1 rotation of axle/Cog 1 powers 4 rotations of Cog 2 (32:8)<br />1 rotation of Cog 2 powers almost 4 of Cog 3 (30:8)<br /><br />Which would yield about 16 rotations of the flywheel for one rotation of the wheel. The math works against observed behavior, thank god.<br /><br />My earlier mistake was to add an additional 5:1 advantage on Cog 2 because it had separate input and output cogs. No need to have done that. The rest was simple tooth count estimation errors.<br /><br />QEDPeter Lairdhttps://www.blogger.com/profile/03129951400907428207noreply@blogger.comtag:blogger.com,1999:blog-3662509960113735055.post-56412172864751200562010-05-31T22:59:42.609-07:002010-05-31T22:59:42.609-07:00I'll call BS on my own post. As I was sitting ...I'll call BS on my own post. As I was sitting doing other things, I decided to test my theoretical results. I made some marks on the wheel and the flywheel, and started spinning.<br /><br />1 turn of the wheel generates only 16 turns of the flywheel. My estimates on tooth count must be way off base.Peter Lairdhttps://www.blogger.com/profile/03129951400907428207noreply@blogger.com