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Electric fan selection
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af2
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1933 Willys Coupe

PostPosted: Tue Jul 20, 2010 12:52 am    Post subject: Reply with quote

10sec.et wrote:
MufflerBearings69 wrote:



I am not sure yet if the fan will be enough (1600 cfm)- if not, I will hop up a fan size and trim the hole bigger...


its not so much the size as it is the design. that fan is good for cooling computers and thats about it. you want a kick ass fan that pulls lots of air ? get something off of a late model V8 Ford/Lincoln. the only problem with the Ford fans is that they pull a LOT of amps and you need to run fuseable link or a really heavy fuse holder.


Turn that shroud around and you will pickup more of the cores!
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MufflerBearings69
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PostPosted: Tue Jul 20, 2010 1:56 am    Post subject: Reply with quote

what ya mean by turn it around?

i went with the fan as a starting point for 22 bucks more than the shroud on sale. I figured no matter what I did, having a solid panel to start from that would mount and cover the entire core would be good.

From here I could even go back to engine driven, and enlarge the hole and add a drum to this... Just was going to try this and the water pump pulley swap from the other thread and establish a baseline.

I am wiring in with some serious fuse holders and good 10 gauge cable for the fan- that way I can step up without redoing a lot.

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William Jones
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PostPosted: Tue Jul 20, 2010 2:42 am    Post subject: Reply with quote

I run a lincoln fan in my race car and it keeps it cool even during long idle times and it only cost me $25 at the junk yard. It pulls like 35 amps on startup but only about 22 amps after its running. Its like a 18" fan.

Bam

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af2
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1933 Willys Coupe

PostPosted: Tue Jul 20, 2010 5:58 pm    Post subject: Reply with quote

[quote="MufflerBearings69"]what ya mean by turn it around?
quote]

As it is, right up against the core will only pull the air through that 16" circle.

Flip the shroud so it protrudes outside the radiator and you will pull through the whole core. Then get the biggest fan you can get and cut the circle to fit.
You have to seal the sides also to pull through the core and not behind it.
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MufflerBearings69
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PostPosted: Tue Jul 20, 2010 8:11 pm    Post subject: Reply with quote

I see. In the pic it isnt easy to see, but that shroud is sealed tight to the core (used foam tape to fill the 1/8" gap, and it makes a nice dome to draw air through the entire rad- new pic-

Now to just get enough fan behind it.

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af2
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1933 Willys Coupe

PostPosted: Tue Jul 20, 2010 10:21 pm    Post subject: Reply with quote

Yes, that is what I am saying.
The other pics look like it is on backwards.
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Tue Jul 20, 2010 11:46 pm    Post subject: Reply with quote

af2 wrote:

The other pics look like it is on backwards.


HA, it sure does look backwards now that you mention it. one of those optical illusion brain teasers. kinda like those weird posters you had to look at real hard to see the image Laughing .

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af2
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1933 Willys Coupe

PostPosted: Tue Jul 20, 2010 11:55 pm    Post subject: Reply with quote

The fun of pics in 2D.
And people wonder why they get advice all over the map on the internet. Shocked Laughing
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af2
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1933 Willys Coupe

PostPosted: Tue Jul 20, 2010 11:58 pm    Post subject: Reply with quote

MufflerBearings69 wrote:

Now to just get enough fan behind it.


Why behind it?
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MufflerBearings69
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PostPosted: Wed Jul 21, 2010 12:03 am    Post subject: Reply with quote

the way my core support and the hood latch are built I cant (easily) put a pusher in front of the rad... by behind it I mean bolted to it like that fan, or mounted to the water pump.

everyone else who has looked at the pic since agrees it looks like I was "having a moment" during install... I never noticed Embarassed

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af2
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PostPosted: Wed Jul 21, 2010 12:17 am    Post subject: Reply with quote

Good deal!!!!! I was hoping you meant that behind as a puller.
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MufflerBearings69
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PostPosted: Sun Aug 15, 2010 10:46 pm    Post subject: Reply with quote

Ok, So I am getting close to getting to the fan. I am going with a mechanical fan.

I am going to use that aluminum shroud. I want to take that electric fan off, and add a hoop of aluminum to make it into a sweet mechanical fan shroud.

Enough rambling- how much gap do you guys suggest between fan and shroud? As in, if the fan is 16" diameter, would you make the hoop 17" or 18" or what?

Robins- I threw a 1600 cfm "high performance" fan on the work truck. I can tell you that 1600 cfm is a joke for anything we discuss on this site... It will keep that Nissan KA24E cool with an oversized radiator, but that thing really doesnt make much heat... I am happy I could use some spare stuffs and not waste project $$$ on a fan clutch though. Very Happy

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af2
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1933 Willys Coupe

PostPosted: Sun Aug 15, 2010 11:26 pm    Post subject: Reply with quote

MufflerBearings69 wrote:


Enough rambling- how much gap do you guys suggest between fan and shroud? As in, if the fan is 16" diameter, would you make the hoop 17" or 18" or what?


As close as you can get without hitting and the blade 1/2 way is the best.
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