TsSupercrew

I have access to both type of fans from windstars and taurus. Which one is doing a better job for everyone? I'm torn and can't decide.

MGD

Just go buy a Motorcraft RF-269 dual efan (2010+ F150 OEM), new from Tasca, etc.

Will blow the two above away.

You'll need a robust soft-start variable-speed controller to drive it. Or use 2 separate controllers and have 100% redundancy.

Several good install threads using this efan on this forum. Just a search away.


MGD

Mod (Ret.)

Any two speed fan will also work very well for your truck. The single, two speed fans are large, and fit nicely within your stock fan shroud. Two speeds are set up to run the fan anytime the A/C is on (e-fan low speed), and the high speed would only kick on when the engine reaches a "set" temperature detected by a temp sensor, typically if you were idling in traffic for a period of time.

The important key to any e-fan upgrade is the controller. Don't cheap out on the controller, and if you end up with a two speed fan setup, be sure the controller you use works with the two speeds (low and high).

There's a huge write up on this within this forum.

jake_85

Agreed, check out Bucko's write up, I just did it and it kicks ***!! All for about $175

MGD

If you don't have 2-speed dual fans and you wanted to add that function, and don't want to invest ~$200 on a proper constant-temp controller like DCContols, here's how you can do it with a coupla relays. The goal is to avoid the huge inrush current on fan startup.



The other trick is to add a feature to inhibit needless fan turn-on/cycling when the A/C kicks in while travelling over ~40 mph. For that, you'd use a thermo snap-switch on the A/C condenser, and some additional relay 'logic'.

Lastly - adding in-cab fan status Leds, and manual override switches (in case of controller failure, water-fording, etc) could also be considered.

Just FYI: here are the RF-269's specs - these are spectacular efans. Note the enormous current requirements - which is indicative of some truly massive airflow capability (serious CFM's requires serious energy).



Small fan

Diameter 14.5"
Hub diameter 5.5"
Current (no load) 24.83A
Current under load 26.24A
Starting current 69.64A
cfm (no load) 2797 cfm

Large fan

Diameter 15"
Hub diameter 5.75"
Current (no load) 27.64A
Current under load 36.35A
Starting current 69.64A
cfm (no load) 2964 cfm


Total

Current (no load ) 52.47
Current under load 62.59A
Starting current 139.3A
cfm (no load) 5761 cfm





MGD