Thingiverse
Crank Shim for Air Raid Siren
by truglodite
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I made this to enjoy higher rpm, louder noise, and higher pitch when operating my air raid siren. :D
After I printed myself MlePh's air raid siren (THANKS!) I gave the crank a good spin and ran in to hard friction before even reaching what I'd call 'mid rpm'. Turns out the slop between the crank handle and bearing allowed 'gear1' to move too much, to where it would hit gear3, and gear3 would rub the inside of the gearbox. So I made this shim to eliminate that slop. With the shim installed, my
After I printed myself MlePh's air raid siren (THANKS!) I gave the crank a good spin and ran in to hard friction before even reaching what I'd call 'mid rpm'. Turns out the slop between the crank handle and bearing allowed 'gear1' to move too much, to where it would hit gear3, and gear3 would rub the inside of the gearbox. So I made this shim to eliminate that slop. With the shim installed, my
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