More powerful wind up boat spring
prusaprinters
<p>Inspired by Mike's newer two-propeller wind-up boat with its more powerful spring, I decided to make a stronger spring for his <a href="https://www.printables.com/model/631-wind-up-bathtub-boat-v5-with-benchmark-test-badewa">original boat v5</a>. I made it over-sized, so it needs to be pre-loaded (partially wound-up) when you install it. It runs significantly longer and with more power than the original spring.</p><h4>Printing</h4><p>I recommend printing this in ASA or ABS, which are more resilient than PLA. PLA makes a stronger spring but it's brittle and might not last as long. PETG is softer so it isn't great for springs but it would probably work in a pinch.</p>
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