Base for 7 Cylinder Radial Engine
thingiverse
I was asked for the base model so I went looking for a suitable one. The 7 Cylinder Radial Engine Model caught my eye on Thingiverse - it's a great design. The motor itself is quite impressive, with a speed of 30 RPM at just 3 volts. If you're interested in getting one, I found a great option on eBay Canada that includes a metal gearbox wheel and shaft. For battery contacts, I recommend checking out this set of silver tone metal spring contacts for AA or AAA batteries on eBay Canada. They look like they would work perfectly for the job. Finally, if you need an on/off switch, this latching action push button switch from eBay Canada is a great option - it can handle DC voltages up to 30V and has a current rating of 1A.
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