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In a message dated 8/10/2003 1:11:49 PM Eastern Daylight Time, twjames@healed.org writes:
What do those with "Fan" experience say about preventing this kind of
problem?
Will a diode in the right place prevent these little dynamos from blowing
fuses and disrupting the engine?
Lynn, How would you do in a race car?
Use a double throw double pole switch. Connect both fan wires to the center, (switchable) connections. Connect the power wires to one end connections and to the other end connect a jumper, shorting the two terminals. In the "OFF" position.
The wires from the fan are shunted, and the fan will not spin up to any extent until you turn it on.
After you look at that for a while, you will notice that you can use a single pole double throw switch, and switch only the powered side and let aircraft ground do the other side. I would do that, but, I would use the double switch and strap the terminals into pairs. Then the contactor area is doubled, and the switch will last longer. Lynn E. Hanover
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