Pusher Fan

[NOXJohn]

Previously I posted about installing a pusher fan on my 1949 8N tractor I use as a lawn mower. This tractor is 12 volts and has a 160 degree thermostat and a temperature gage with the sensor in the head. The head temperature went from 190 to 220 degrees after I installed the pusher fan when mowing in mid 80 degree days. I added an extra electric fan and the head temperature went down to 195 degrees. I can live with a 195 degree head temperature and it sure is much better when mowing without that hot air being blown back on the operator. Below are some pictures.
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[Anonymous-0]

Quite a set-up.

Trouble is most pusher's take up so much horsepower. I would stick with that nice warm air with a "bud" in one hand and the radio play'N loud. Sorta Harley style.

John,PA

 

[Ken(Ark)]

Trouble is most pusher's take up so much horsepower.

John,PA

OK , I'll bite , why would a pusher take "so much horsepower"


I have 6 blade pullers which I assume would take minimal more power than a 4 blade puller but I don't see the push/pull being any noticeable difference , maybe I am missing something ?


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I am right 97% of the time and the other 4% doesn't matter - anonymous .


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[Anonymous-0]

I am not at my engineering books right now. In fact, I probably threw 'em out along with other obseolete stuff that is computer engineered now.

Like 'dis: for every CFM increase in airflow, there has to be additional Horsepower applied.
Deals with high math. Not my memory anymore.

John,PA

 

[Ken(Ark)]

for every CFM increase in airflow, there has to be additional Horsepower applied.


John,PA

I basically agree with that , but a fan pulls air from one side and pushes it to the other whether it is going forwards or backwards .

I don't see pulling from the motor and pushing it through the fan being a [b:566fd56bf2]measurable[/b:566fd56bf2] hp difference from pulling it through the radiator an pushing it over the motor . Is the cfm or resistance that big of a difference ?

I have never used a pusher fan so I don't know , just curious - Ken(Ark)

 

[wishihadagreenthumb]

My old 47 has had a 4 blade pusher on it for as long as anyone can remember and there has been no big difference in HP or engine temp.

 

[NOXJohn]

I am using a 6 blade pusher fan and the added electric fan that draws around 4 amperes. I am sure the additional 4 ampere draw on the alternator takes some horse power but it is not enough to be noticeable. However, the reduction in the temperature on the operator is significant.

 

[TheOldHokie]

(quoted from post at 06:45:50 07/29/12) I am using a 6 blade pusher fan and the added electric fan that draws around 4 amperes. I am sure the additional 4 ampere draw on the alternator takes some horse power but it is not enough to be noticeable. However, the reduction in the temperature on the operator is significant.

48 VA is roughly .093 HP additional load - probably a little less than what you get when you turn on the headlights :twisted:


TOH

 

[Gaspump]

There were a few pusher fans made for the N's. At least two 6-blade and two 4-blade. This is the first post I recall you saying that you have a 6-blade pusher. The 6-blade pushers were from the 9/2N era. The most common 6-blade pusher was for tractors sitting stationary and pulling a big load such as a belt driven thresher or corn shredder at mid throttle belt speed. That fan may be the one you have, it moved larger volumes of air but at lower RPM's. The 4-blade pushers were a lot different too. One was from the 9N era and the other the 8N. The 8N is most desirable as it is full bladed and surely moves more air. The 9N version was touted as a winter fan, had curved blade tips and likely moved less air. Really doesn't matter, you solved your problem and are riding in comfort.

 

[Garlock]

There were a few pusher fans made for the N's. At least two 6-blade and two 4-blade. This is the first post I recall you saying that you have a 6-blade pusher. The 6-blade pushers were from the 9/2N era. The most common 6-blade pusher was for tractors sitting stationary and pulling a big load such as a belt driven thresher or corn shredder at mid throttle belt speed. That fan may be the one you have, it moved larger volumes of air but at lower RPM's. The 4-blade pushers were a lot different too. One was from the 9N era and the other the 8N. The 8N is most desirable as it is full bladed and surely moves more air. The 9N version was touted as a winter fan, had curved blade tips and likely moved less air. Really doesn't matter, you solved your problem and are riding in comfort.

I have a 57 MM 335, get so hot the throttle lever is hot to touch! Where can I get a pusher for it?

 

[ASE guy]

Previously I posted about installing a pusher fan on my 1949 8N tractor I use as a lawn mower. This tractor is 12 volts and has a 160 degree thermostat and a temperature gage with the sensor in the head. The head temperature went from 190 to 220 degrees after I installed the pusher fan when mowing in mid 80 degree days. I added an extra electric fan and the head temperature went down to 195 degrees. I can live with a 195 degree head temperature and it sure is much better when mowing without that hot air being blown back on the operator. Below are some pictures.
<a href="http://s271.photobucket.com/albums/jj159/JCMMurphy/?action=view&amp;current=MVC-023F.jpg" target="_blank">

</a>
<a href="http://s271.photobucket.com/albums/jj159/JCMMurphy/?action=view&amp;current=MVC-024F.jpg" target="_blank">

</a>
<a href="http://s271.photobucket.com/albums/jj159/JCMMurphy/?action=view&amp;current=MVC-025F.jpg" target="_blank">

</a>

Yes, you can live with 195 head temperatures in my opinion.

 

[Jim.ME]

I have a 57 MM 335, get so hot the throttle lever is hot to touch! Where can I get a pusher for it?

You will likely get more help with your problem if you start a new thread of your own, about your Minneapolis-Moline 335, on the Minneapolis-Moline Forum rather than here on the Ford 9N, 2N & 8N Forum. Tagging onto old threads often does not get the desired results, just like here, the reply from ASE-guy is to the original 2012 poster, not you.

 

[Fritz Maurer]

I have a 57 MM 335, get so hot the throttle lever is hot to touch! Where can I get a pusher for it?

I don’t know how big a MM 335 is, or if such an attachment ever existed, but if you want to change the fan, start with your desired outside diameter and the bolt circle. If you don’t care about correct, there are all sorts of plastic fans out there, to which the bolt circle could be easily modified if necessary. Perhaps more important would be the size of the pilot hole, would be much easier to keep the fan in balance if it fits tightly here, in the event that the bolt hole location needs to be altered.

 

[used red MN]

ASE, old post. NOX John has not posted here since Feb. 2016. The post was revived by new user Garlock due to his interest in a pusher fan, for his MM. Look up a few replies to see it.