Re: OT: Finding a mechanical engine fan by dimensions

Leon Fisk <lfiskgr@gmail.invalid> wrote:

On Wed, 24 Apr 2024 04:11:21 -0000 (UTC)
<bp@www.zefox.net> wrote:
 

I decided to order a fan from Amazon, based on a few words on
the manufacturer's website:
https://derale.com/product-footer/belt-driven-fans/fan-clutch-fans/standard-rotation/17117-17120-detail
>
Flange bolt circle: 3" / 3 1/4"
Flange diameter: 2 3/8" / 2 5/8"
>
After long reflection it crossed my mind that what they called "flange diameter"
might be the centering boss diameter. I'll find out in a week.

 
Hopefully this works out for you
 
Many years ago I installed a "Flex-Fan" on a big block that was having
problems cooling during the summer. It was just a simple order from
Sears back then...
 
They are still around it seems and maybe they have one that might fit:
 
https://www.etrailer.com/search/Flex+Fan
 
They have a more universal fit than OEM. They work differently too. At
low speeds they scoop a lot more air. As the motor revs up the blades
collapse (flex) becoming more efficient.
 

I thought about a flex fan, but it would require yet more hardware
to reach the fan shroud. The fan from Amazon comes to $60, if it
fits, problem solved. If it does not fit maybe I'll reconsider...

Thanks for writing,

bob prohaska