I keep trying new combinations of Wild Gears to make “wheel-within-a-wheel” designs. While I (more or less) understand the math for predicting the number of points you’ll get when using one gear inside one ring, I haven’t figured it out for the patterns you get when you use a gear inside a hole in a wheel going around inside a larger ring. If someone can help me with this, please explain it in the comments.
I do know, however, that if your small gear isn’t much smaller than the hole in the larger gear you’re using, you get loops. This pattern has lots of loops, as it uses a #40 gear in a #45 hole. The larger wheel is 140 and the large ring is 180. All except the 40 are in Wild Gears’ Full Page Gear Set. The 40 came from the Plentiful Gear Set.
It’s fun to watch the pattern emerge, so I made a video of it (below). I messed it up 5 times before I gave up and used the blooper anyway. I tried again without the camera running and got it perfect the first time. Go figure.
The first time I discovered this combination of gears, I found the pattern interesting and coloured it. So I made it in black as a colouring page, and here are some results. A couple are done by an Australian correspondant, Suze.
In case you’d like to try colouring it yourself, you can get the colouring page for $1.77 USD. Send me your pictures and I’ll add them to the gallery.
In the video, I’m using a Micron 05 pen (.45mm). This is a pricier pen than most that I use, but I wanted some archival ink to create more serious artwork with my Wild Gears and Spirograph. Christmas is coming, after all.
Colouring page available at https://www.etsy.com/ca/listing/573353165/adult-coloring-page-loopy-spiro-pattern