Quote:
Originally Posted by fastd
If I'm at the track or as I am testing the car, I'd like to have the fan run after the ignition is turned off some times. Right now I have a switch to power it but I'd like to have some type of timer on there in case I forget to turn it off manually.
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It seems you have a couple of options, without getting into semi-exotic, programmable controllers, either:
- something similar to the ERA setup, with a temperature sensor in the lower radiator hose; or
- a simple timer relay that will run the fan(s) for a fixed interval.
The former is well-proven and will run only until the sensor determines the set temperature has been reached. The latter will run for that fixed interval, even when not necessary (e.g. a cool day).
I'd lean toward setup #1.
Regardless - here are couple of timer setups:
Hella 996152131 - Hella Adjustable Time Delay Relay (adjust time with DIP switches on top of relay):
https://www.summitracing.com/parts/hla-996152131
Timer Relay, DROK 0.1s to 999min:
https://www.amazon.com/DROK-Automoti...ct_top?ie=UTF8