flex fan

M

mfirth

Well-known member
Anyone running a flex fan on your 8ba, and if so, what brand & diameter.
Thanks in advance ! mike
 
Mike, I ran one for a couple of weeks while I was replacing the fan bearing on my '51. I believe I used a fan bracket from the '51 Merc engine I now have in my Ford because the fan bolted to it. I just tripped over the fan today at my shop. I'll look at it tomorrow to get the brand and diameter. You can have it for shipping if you want it. (I'm on a "downsizing" spree.)

As I remember it didn't cool as well as the stock fan, but I can't really be sure.
 
Thanks tubman [Denny], i'll let you know....when i read about hoods, radiators etc being destroyed by a flying blade, i get nervous.....what do you think?
 
I had a flex fan in my '34 for years. With a flathead , with a small block chevy and back to a flathead. I used to like the noise, as I got older I hated it.
 
I run a 18 in. 6 blade fan with stainless blades. Bought it at Super Shops in 1988. The part # on receipt is: DER1140 18" HIGH PERFORMANCE FAN. Cost $17.99. I think DER may be the abbreviation for a DERALE brand fan.
However, I couldn't find that part #. Here's their website.
https://derale.com/product-footer/belt-driven-fans/high-performance-flex-fans Here's a photo.

Below are close up photos of my DER1140 fan blade shape that may be helpful in finding a similar fan. I also have a shroud for my Griffin radiator. About 1/3 the fan blade depth goes in the shroud opening.

Check out DERALE fans on Ebay.
https://www.ebay.com/sch/i.html?_fr...0.H0.Xflex+fan.TRS0&_nkw=flex+fan&_sacat=6000
 

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When I bought my '51 it had a flex fan on it. Didn't cool worth a damn! Would not hold paper in front of rad. at idle. Put a four blade Ford fan on and all is well. Holds paper to rad. at idle. The flex fan had no name on it just a tag that read "part#9115 made in USA".
 

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Thanks everyone for the info and the pics !!! Think i'll pull my fan and examine it carefully before doing anything else. Love the "Barn", you are all GR8. mike
 
When you buy an aftermarket fan, make sure the rotation is correct , I had a customer com in with a cooling problem ,it seems he bought an aftermarket fan that was for a later model ford that rotated the opposite direction.
 
estout81 said:
When I bought my '51 it had a flex fan on it. Didn't cool worth a damn! Would not hold paper in front of rad. at idle. Put a four blade Ford fan on and all is well. Holds paper to rad. at idle. The flex fan had no name on it just a tag that read "part#9115 made in USA".
Click to expand...

Without a shroud, I'm surprised either cooled worth a damn. But I agree that flex fans don't pull nearly as much air as a fixed-blade fan. I just wish there was a freshly made, quality replacement for stock.
 
Adapted a 7 blade flex-fan from a 70's vintage 6 cyl. Fairmont.
Pumps a lot of air and is quiet. (much better than stock)


picture.php

picture.php
 
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Ross,
Don't have a shroud on my F-1 or '51. Neither have ever run hot after I got everything fixed properly. No trick parts or snake oil.
 
Thanks again guys, but i pulled my fan 2day & checked very carefully for cracks. Not a trace. I re-installed the stock fan & will check it from time to time.
 
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