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Creepytheclutchmaster

Hard wired cooling fan 1996 jtr270.

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Hi all I don't trust thermostats, so iv hard wired my fan on permanently on my 1996 jtr270, it works fine at idle and low revs with good air flow rate , but when you give  the motor a good rev up the fan slows almost to a stop, and then starts again as the revs come back down to idle. I'd would of thought the fan should spin faster with more revs??, but hay atleast it works lol. 😂 Any ideas?? Cheers 

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Sounds as if the engine is trying to do the opposite of what you have done, and cancels out your polarity at higher revs...  

Or did you just short circuit the thermostat..?

.

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Perhaps the fan motor is DC and the AC output of the mag needs to be rectified to DC.  Seems Betas of that era had some sort of diode in the circuit for simple rectification, if that diode went bad the fan would do what you describe.

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7 hours ago, scifi said:

Sounds as if the engine is trying to do the opposite of what you have done, and cancels out your polarity at higher revs...  

Or did you just short circuit the thermostat..?

.

Yeah I just put the thermostat wires together, to mimic the activation of the thermostat when hot, I think it is the ac dc thing, maybe I need to change the position of the of the wires at the rectifyer,. 

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