Author	[Modern View]
NOXJohn 07-27-2012 12:54:50 184.5.161.74 Report to Moderator	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. [Reply]   [No Email]
Gaspump 07-29-2012 09:50:02 72.40.147.53 Report to Moderator	Re: Pusher Fan in reply to NOXJohn, 07-27-2012 12:54:50   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. [Reply]  [No Email]
TheOldHokie 07-29-2012 04:14:39 108.8.17.88 Report to Moderator	Re: Pusher Fan in reply to Gary (Or), 07-27-2012 12:54:50   NOXJohn said: (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 This post was edited by TheOldHokie at 04:27:21 07/29/12. [Reply]  [No Email]
NOXJohn 07-29-2012 03:45:50 184.5.161.74 Report to Moderator	Re: Pusher Fan in reply to NOXJohn, 07-27-2012 12:54:50   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. [Reply]  [No Email]
Ken(Ark) 07-28-2012 16:48:46 173.187.231.61 Report to Moderator	Re: Pusher Fan in reply to NOXJohn, 07-27-2012 12:54:50   Quoting Removed, click Modern View to see 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 measurable 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) [Reply]  [No Email]
wishihadagreenthumb 07-28-2012 19:28:16 98.94.199.143 Report to Moderator	Re: Pusher Fan in reply to Ken(Ark), 07-28-2012 16:48:46   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. [Reply]  [No Email]
Ken(Ark) 07-28-2012 11:51:57 173.187.231.61 Report to Moderator	Re: Pusher Fan in reply to NOXJohn, 07-27-2012 12:54:50   Quoting Removed, click Modern View to see 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 ? .................... I am right 97% of the time and the other 4% doesn't matter - anonymous . .................. [Reply]  [No Email]
CFM LAW..John,PA 07-28-2012 15:50:15 69.72.115.43 Report to Moderator	Re: Pusher Fan in reply to Ken(Ark), 07-28-2012 11:51:57   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 [Reply]  [No Email]
WOW..John,PA 07-27-2012 16:54:35 69.72.115.88 Report to Moderator	Re: Pusher Fan in reply to NOXJohn, 07-27-2012 12:54:50   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 [Reply]  [No Email]