Topic: ANOTHER ELECTRIC FAN QUESTION!!

[Sherpa]

This is from an article in JP mag.

Did this come from a recent issue?

[Bounty Hunter]

It was in Randy's electrical article a few issues back.

[st.chevrolet]

The July 2010 issue

[sharpxmen]

i wonder if the same myth applies to the Lincoln Mk VIII fan - i need to buy a beefy ammeter and test it.

[Jeffy]

i wonder if the same myth applies to the Lincoln Mk VIII fan - i need to buy a beefy ammeter and test it.

Yes.  They use the same motor, IIRC.

[sharpxmen]

i ordered a 100 AMP ammeter and will measure the mk viii draw, unfortunately mine is a high speed only but i'm really curious what the result is (i read reports of something close to 50 amps which is quite high). I'll post the results once I get it (should be here in about a week).

[Sherpa]

i ordered a 100 AMP ammeter and will measure the mk viii draw, unfortunately mine is a high speed only but i'm really curious what the result is

You're using your MN12 fan on the high speed input/setting?  Oh.  From your now-legendary thread, I thought you said you were using the low speed setting.  Hmm.

Not sure how crucial this is for me, as my connector just has two wires.  I guess I'll be using whatever speed Ford saw fit.

[sharpxmen]

You're using your MN12 fan on the high speed input/setting?  Oh.  From your now-legendary thread, I thought you said you were using the low speed setting.  Hmm.

not sure which thread you're referring to (i got a few of them going so point me where i said that, if i did i obviously made a mistake) - the mkviii fan i have has no low speed. i have a couple of resistive loads i picked up at the wreckers to put in-line and slow down the fan but that's no tell for how much the ones with low speed will actually draw.

EDIT: this is back when i got the fan http://4bangerjp.com/forums/index.php/topic,7112.msg52431.html#msg52431

[...] So off i went to the wreckers on another quest to find a Taurus fan - no way, they're all gone around here, the only ones you find are the dual fan shrouds. so browsing around in the wreckers yard i came across a fan from a Lincoln, 22x19 shroud, all square, seemed perfect - got it for $30 (canadian dollars also) and took it home. It has 3 terminals so i figured, yeah baby it's a 2 speed - not really, 1 speed, middle terminal is the same as the + terminal and even more of a genius spark for the one designing the wiring the middle and ground are both black and the positive is blue - you'd think the blue which is labelled + is always at 12v and then you have ground on one of the other 2 black wires one for high speed one for low speed - nope, i welded the wires to the battery since the middle and the + are internally connected. Anyway, to make the long story short - this is a Lincoln Mark VIII fan, apparently moves 5000cfm (no typo, i couldn't believe it either) and it draws about 40 or 50 amps). It kinda hovers when you turn it on (not really but it sounds like a got dam jet engine) - so i figured, what the heck should i do - i really like the shroud and the fan blades - went back to the wreckers - apparently the newer Tauruses have a high power resistor in series with the fans for A/C i think (low speed anyway) - so i picked up a couple of those for 5 bucks along with the wiring. Put one in series, the dam thing still wants to take off, put 2 of them in series - much better - i think that would be my low speed and leave it wired directly for the high speed - i don't think it will ever need high speed but just for redundancy i wan to have it in just  in case one of the resistors dies. Apparenly this fan would spike to about 100 amps on start if it's wired directly, and from what i read it needs at least an 85 amp relay (good luck to me finding a cheap one of those, it will probably cost more than both fans put together).
Now i'm waiting for my rad so i can start fitting this baby on it.