Jump to content


Photo
- - - - -

Electric cooling fans - Two pullers or One pusher?


  • Please log in to reply
73 replies to this topic

#61 flatcat19

flatcat19

    Back in Black

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 19,739 posts
  • Location:Tri-Cities, WA/PDX
  • Cars:Smaller. Better. Slower. Lower.

Posted 09 November 2017 - 08:01 PM

What are you doing for your fan controller?

You can't hang if your nuts haven't dropped...it's physics


#62 Draker

Draker

    Ratsun-Erect

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 12,537 posts
  • Location:Eugene, Or
  • Cars:1971 2 door 510, 1969 4 door 510, 2002 Tacoma double cab

Posted 09 November 2017 - 08:35 PM

What are you doing for your fan controller?


I just bought a thermostat switch and relay. Switch is on at 185, off at 175. Probably a little low, but should be okay. I'll wire in a fan LED in the cabin to know when they kick on.

View my 69 510 4dr Sedan - Build Thread
View my 71 510 2dr Sedan - Coming soon.

http://drakers.pl510.info

 

 


#63 Draker

Draker

    Ratsun-Erect

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 12,537 posts
  • Location:Eugene, Or
  • Cars:1971 2 door 510, 1969 4 door 510, 2002 Tacoma double cab

Posted 09 November 2017 - 08:36 PM

It was pretty cheap on amazon.

View my 69 510 4dr Sedan - Build Thread
View my 71 510 2dr Sedan - Coming soon.

http://drakers.pl510.info

 

 


#64 Draker

Draker

    Ratsun-Erect

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 12,537 posts
  • Location:Eugene, Or
  • Cars:1971 2 door 510, 1969 4 door 510, 2002 Tacoma double cab

Posted 09 November 2017 - 08:43 PM

20171109_192744.jpg

View my 69 510 4dr Sedan - Build Thread
View my 71 510 2dr Sedan - Coming soon.

http://drakers.pl510.info

 

 


#65 flatcat19

flatcat19

    Back in Black

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 19,739 posts
  • Location:Tri-Cities, WA/PDX
  • Cars:Smaller. Better. Slower. Lower.

Posted 09 November 2017 - 09:54 PM

I just bought a thermostat switch and relay. Switch is on at 185, off at 175. Probably a little low, but should be okay. I'll wire in a fan LED in the cabin to know when they kick on.



Thread in probe? Or the o e you stuff through the fins?

I ask because I'm looking in to doing e-fan(s). Just gathering who's doing what, where.

You can't hang if your nuts haven't dropped...it's physics


#66 Draker

Draker

    Ratsun-Erect

  • Senior Member
  • PipPipPipPipPipPipPipPipPipPip
  • 12,537 posts
  • Location:Eugene, Or
  • Cars:1971 2 door 510, 1969 4 door 510, 2002 Tacoma double cab

Posted 09 November 2017 - 10:17 PM

Thread in probe? Or the o e you stuff through the fins?
I ask because I'm looking in to doing e-fan(s). Just gathering who's doing what, where.


Thread in, but not sure where I'm going to put it yet since I'm a already running two gauges. There is another spot on the koyo.. maybe it will go there.

View my 69 510 4dr Sedan - Build Thread
View my 71 510 2dr Sedan - Coming soon.

http://drakers.pl510.info

 

 


#67 Lockleaf

Lockleaf

    Hall Monitor

  • Senior Member
  • PipPipPipPipPip
  • 4,339 posts
  • Location:Happy Valley, Utah
  • Cars:'71 510 Goon, '90 240SX, '85 720, '69 Roadster, '96 Pathfinder, too much other shite

Posted 09 November 2017 - 11:02 PM

I did two fans hooked to a dual temp bmw switch. It turns on one fan at low (190 degrees) and turns on a second fan if it reaches high temp (210). Also the second fan is tied to my AC wiring so the second fan will run full time whenever the AC is on.

Thread in switch in radiator. Pulled from a bmw. Junkyard fuse/relay block. Two small Honda fans that may not be adequate to the job.

That's in my "half pint" 510 wagon thread.

Half Pint ('71 510 Goon) http://community.rat...agon/p?=1269361

 

Audrey ('69 Roadster 1600) http://community.rat...rey-the-ratster

 

Tiny Havok ('85 720 DIY built Crewcab 4x4) http://community.rat...ache/?p=1395455

 

720 Shenanigans http://community.rat...20-shenanigans/


#68 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 69,424 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 10 November 2017 - 06:07 AM

dq_10.1_fan_switch_photo1.jpg

 

I have similar to this one from a '90s 200sx. It goes in the return hose just cut out 3" and two hose clamps. Run this through a relay and 30 amp fuse. It should be powered at all times and NOT through the ignition.

 

Don't put in the inlet hose. Give the rad a chance to do it's job first or the fan will be on when not needed.


Posted Image

#69 Stoffregen Motorsports

Stoffregen Motorsports

    Datsun Mechanic

  • Senior Member
  • PipPipPipPipPip
  • 3,759 posts
  • Location:Cool, CA
  • Cars:http://www.4wdandsportutility.com/features/rover/0611_4wd_1957_range_rover/viewall.html

Posted 10 November 2017 - 10:57 AM

I recently found a great writeup on fan controllers. It's got links to other pages which also had a ton of other info - http://www.240turbo....oolingFans.html

 

His 4 speed fan controller is a work f genius and a lot of testing, a bit bulky though - http://www.240turbo....fanharness.html



#70 distributorguy

distributorguy

    Senior Member

  • Senior Member
  • PipPipPipPip
  • 1,069 posts
  • Location:Metropolis, MN
  • Cars:77 Datsun 620, 73 Datsun 620

Posted 18 November 2017 - 06:20 AM

I've never used a fan controller that didn't let me down.  I've gone to thermostatic switches in the head.  Much simpler and more effective long term.  On at 180, off at 170 or something like that.  

https://www.ebay.com...h-/262564045727



#71 Stoffregen Motorsports

Stoffregen Motorsports

    Datsun Mechanic

  • Senior Member
  • PipPipPipPipPip
  • 3,759 posts
  • Location:Cool, CA
  • Cars:http://www.4wdandsportutility.com/features/rover/0611_4wd_1957_range_rover/viewall.html

Posted 19 November 2017 - 09:10 AM

Me too. I've only had fan control failures. My Volvo V70 T5 had a massive electronic controller that went out and instead of spending the money I tried a cheapie from Hayden (I think) and it could barely handle the amp draw of the OEM Volvo fans. So my solution (though not pretty) was a pair of Ford continous duty solenoids. It worked, but was ugly.

 

The reason I like the info in the links I shared above is because it seems that guy has had similar problems and has worked hard to figure them out.



#72 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 69,424 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 19 November 2017 - 09:48 AM

Odd, I have a pair of Subaru fans and 20 amp fuse between a 720 Nissan relay and + battery. I put spare fuses and an extra relay in the glove box when I read you saying about this huge draw on start up before. It works just fine with the 20 amp. 


Posted Image

#73 Stoffregen Motorsports

Stoffregen Motorsports

    Datsun Mechanic

  • Senior Member
  • PipPipPipPipPip
  • 3,759 posts
  • Location:Cool, CA
  • Cars:http://www.4wdandsportutility.com/features/rover/0611_4wd_1957_range_rover/viewall.html

Posted 19 November 2017 - 11:46 AM

There are a few fans on the market these days that pull very high amperage. The fans in my V70 had 50 amps of draw on startup.



#74 datzenmike

datzenmike

    KING RAT

  • User Administrator
  • 69,424 posts
  • Location:Vancouver Island
  • Cars:'74 710 sedan, '76 710. prevoius... '78 620, '71 521, '68 510 new '76 B-210

Posted 19 November 2017 - 12:51 PM

On initial start up of an electric motor it's basically an almost dead short. Current will spike but drop off quickly as it revs up. This is why electric cars have torrid take off torque. The start up is rapid enough on mine it hasn't time to blow the fuse or harm the relay. (well so far)

 

 

I don't know what the Nissan relays of the '80s and '90s could handle. They're quite robust. 


Posted Image