Friday, September 16, 2011

Anatomy of a Tachometer.

Joey's K3 tachometer:
Gauge halves pried apart

This is the magnet that causes the needle to move.
As it spins it moves a metal plate attached to the needle.
The magnet causes this metal cup to rotate.

Update 9/18:
I cleaned it up and put it all back together. Surprisingly, it works fine now.

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