CatmanV2
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Re-visiting an old idea of mine in light of Doris's unfortunate failure:
The F1 pump relay is a pretty well understood weak point, but there seems to be so much mythos around it. It's just a switch.
Here's my thought:
1) Replaced with a solid state version. This would eliminate the issue where arcing across the terminals causes them to stick. Using a higher rated relay *should* also make this rather less of an issue but. If this isn't a plug an play replacement, a simple wiring harness adapter would be totally trivial to construct.
2) Rather more sophisticated (and possibly overkill), a simple circuit that monitors the voltage across the relay output terminals. When they go 'on' a timer starts.
When they go 'off' the timer is re-set. Once the elapsed timer exceeds a certain threshold (no one's quite sure what that is right now, but again, simple to determine. Bit of a two man job though) sound a buzzer / beeper / LED / $random device). Again, massively simple to interface to the car. Simply plug into the relay socket and create a tiny loom to plug the relay into.
Of course to be really clever, combine the two
So who wants to help me out on this?
C
The F1 pump relay is a pretty well understood weak point, but there seems to be so much mythos around it. It's just a switch.
Here's my thought:
1) Replaced with a solid state version. This would eliminate the issue where arcing across the terminals causes them to stick. Using a higher rated relay *should* also make this rather less of an issue but. If this isn't a plug an play replacement, a simple wiring harness adapter would be totally trivial to construct.
2) Rather more sophisticated (and possibly overkill), a simple circuit that monitors the voltage across the relay output terminals. When they go 'on' a timer starts.
When they go 'off' the timer is re-set. Once the elapsed timer exceeds a certain threshold (no one's quite sure what that is right now, but again, simple to determine. Bit of a two man job though) sound a buzzer / beeper / LED / $random device). Again, massively simple to interface to the car. Simply plug into the relay socket and create a tiny loom to plug the relay into.
Of course to be really clever, combine the two
So who wants to help me out on this?
C