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Reverse sprocket gear

My 60 tooth 530 reverse sprocket showing off some of its internals. Will fit straight onto a Barracuda, Sidewinder or any other motorcycle powered buggy in place of the rear main drive sprocket. 0.6 gear reduction ratio. Centre hub has enough room to fit a Quaif diff. Orders can be taken soon after some extensive testing.

Reverse sprocket gear showing internals

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Trailer brake controller

We managed to find someone silly enough to lend us their caravan for a weekend away, the only problem is that we need an electronic brake controller in our car. After figuring out that I wanted a Redarc Tow Pro I found one on Facebook market place for $150 instead of $330 for a new one.

Tow Pro- I can’t help myself and pulled it apart first chance I had
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XYZ da Vinci 3D printer

I was gifted a da Vinci 1.0A 3D printer that did not print and was partially dismantled

Non-working da Vinci 1.0A printer
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Faulty Makita compatible battery

I purchased 6x 9Ah 18V non-genuine Makita batteries to power the billycart I built. After their first charge and then use one of them would not charge past 1 bar on its gauge or 17.35V instead of 20.5V.

Faulty battery with case opened
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Billycart

I wanted to make a new downhill billycart for Space Pilots camp that I didn’t have to push up the hill. Unfortunately that didn’t happen this year, but I did make an awesome attempt that will need to finished before next year.

William driving me down the hill at high speed-gravity power only

It is powered by (or will have) 2x 2kW motors, 6x 9Ah 18V Makita cordless drill batteries.

Billy cart as driven with 1 motor
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Drug test

I was drug tested at work today and the swab and testing unit looked interesting.

The swab and receptacle
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Auger Post Hole Digger

I needed to dig a few 1/2m holes for posts and was feeling too precious to use a shovel and crowbar. So I made a drill powered post hole digger

Hole-o-matic 2000, patent pending
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Quadcopter

Amy was worried about leaving me home alone, but it has been a very educational experience. I have learnt some valuable lessons this evening.
1. Don’t eat cold meat that smells funny.
2. Pick up the junk mail I dropped (and probably asked to).
3. Don’t glue broken propellers together
4. Don’t play with my toys inside- holes appear in the bathroom wall.

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Asus battery tear down A41-X550A

I got a free laptop that has a stuffed battery so I thought I would tear it down.

Asus A41-X550A laptop battery
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Using AA cells in place of C

I 3D printed some AA to C battery adapters to use in my sons Nerf gun (which currently doesn’t work- I can forsee a post on this repair soon) as we have a supply of these because we use rechargeable batteries. I was asked the question “Do those really work in practice? Do you get any appreciable run time from AA’s in something that expects C’s?” to which the short answer is YES, and the long answer is below.

AA batteries mounted in Nerfgun battery caddy designed for C. https://www.thingiverse.com/thing:566112