Coolant is still running too cold?

[dom14]

Hi Dom
Thx for the link. I'm still old school paper version, though interestingly it's still 5th Ed 20yrs later! I pretty much hated Thermo at the time, but it was one of the units required to pass... P's make degrees (in my case anyway...)
No fear of QM debate bud - my scant knowledge only covers what the LHC is an acronym for! As far as quarks/neutrinos etc - no idea at all, but it is interesting stuff.
Now onto the really interesting stuff...
A simple paddle-type flow switch on top side of thermostat, with a relay to an air-con type clutch attached to fan (somehow replacing viscous coupling) or relay to elec fan, should cover your needs?
More stuff to go wrong IMO, but could delay fan enough to stop things cooling down too quickly?

Yeah, that's true. But, that's nature of the animal, isn't it? More electrics/electronics, more things can go wrong.
Efficiency comes at a price, always. I like the idea of a system like Davies Craig with all electric/electronic cooling system, but as you pointed out, the control unit, electric thermo fans and electric water pump add more failure points.
Which, obviously means I can't go cheap on those parts, which is the way i usually prefer to do it with new ideas for budget related issues.
I think, decoding what you're saying above, I leave the things alone as it is for the time being.