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Balloon Powered Jet Car with Sweet Rimzzz

by thehans, published

Balloon Powered Jet Car with Sweet Rimzzz by thehans Feb 4, 2012

Featured Thing!

Description

Since I didn't happen to have any toy wheels just laying around, I designed some to be printed.

Changes from original: -Added sweet rimzzz -Exhaust port changed to round hole, increased size to 7mm diameter. -Wheel mount holes changed to fit small finishing nails -Added lip to balloon stem

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Instructions

Extra Hardware needed: 4 Small finishing nails (3d 1-1/4") 4 m3 washer or similar tiny size

  1. Print car and wheels. Use low infill for MAXIMUM POWER-TO-WEIGHT RATIO!
  2. Test fit each wheel on a nail to make sure they spin freely. I had to use a fine round needle file to clean the holes a bit.
  3. Put small m3 washer on nail/axle between wheels and car body. This might not be necessary, but I had some washers and thought it was a good idea.
  4. Tap nails into guide holes.
  5. Put a balloon on and have a blast!

I've only printed one of these so far and the nail holes were originally way too small. It was bending the nails trying to hammer them in! I had to drill out the holes a tiny bit for a good fit. I changed the script to make slightly larger holes, so hopefully this will work for other people without the need to drill.

<p>How does it work?</p>

<p>I always used punching bag balloons for these things, try it!</p>

<p>I was thinking of making one where the axle is driven by the balloon air, should make for some massive power.. wonder if the wheels would even have enough grip.. </p>

<p>Awesome design though!</p>

<p>I think I built my body with too high an infill. 30% makes the body just too heavy. Going to have to try again.</p>

<p>Otherwise the design looks pretty neat.</p>

<p>The plate printed quite nicely, and the rimz are nice and sturdy! I'll probably do the next set as separate pieces though, my ultimaker stringed a lot going to and from the wheels and it took a fair bit of sanding to make them round again... </p>

<p>Oh and i recommend drilling the wheel hub before assembly, to optimize your MPG (meters per gale)</p>

<p>Nice. Those are sweeeeeeeet rimz!</p>

<p>Nice improvements!</p>

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