WLToys a9x9 Hexless Wheels and Tires
Description
The tires on my venerable WLToys A979a finally wore out, along with the wheels all being broken and made of mostly glue, and as a replacement set was ~$15 I thought I'd try printing some. These tires are "airless", and are locked to the rim for side loads as well as rotational. they have a little texture to help them grip but are not great grass tires. I can post grass-paddles if there is interest. I spent a long time playing with materials, I was unconcerned with ultimate grip but wanted balance. The cheaper TPU's were pretty useless on another car, so here I went with NinjaFlex. This ends up being ~$2.50/corner, with the wheels like ~19 cents of that. So far, driving hard, I've gone through ~20-25 1500mAh batteries and I'm starting to lose the first layer on the knobby bits. Still plenty of life left, so this won't be $1/run or anything. If there is interest, I may make a bigger rim and less ninjaflex version later.
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