6 blade plastic fan

Divco one

Senior Member
Would the 6 blade plastic fan be more balanced than the 2 blade aluminum stock fan? Is the only benefit more cooling?
 
Use PLASTIC fans for safety, did you ever try to put your elbow against the back side of a METAL fan? PLASTIC fan jist goes, "BRRRRP!! YES, I'VE DONE IT!!
Bill W.
 
would the 6 blade plastic fan be more balanced than the 2 blade aluminum stock fan? not necessarily is the only benefit more cooling? the model a times did a test of the various fan blades on the model a, measuring the air flow at given engine rpm and several locations, in front behind and by the middle engine area. The 6 bladed fan did not win.

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Last edited:
Joop posted this back 4 years ago;

Found this on the internet.


Air through the radiator is the important consideration. That is where the heat transfer occurs. Meauring the air flow into the radiator that results from the turning fan is the test to run. That was done and reported in the Spring issue of the Model A Times. Page 7 contains a chart tht shows the results of three fans, the 2 blade, the 4 blade, and the 6 blade.
In front of the radiator the air speed (mph) created by the fan was measured as:
blades-----2---------4--------6
500rpm---4.8--------4.5-----3.0 mph
1000rpm--9.0--------9.6-----8.5 mph
1500rpm--14--------14------13.5 mph
 
After my 4-blade "truck" fan took out my radiator when the rivets let loose, I opted for the plastic fan. Even if it does come loose (witch I doubt it will) the damage it would do to the radiator and/or other sheet metal couldn't help but be considerably less. I also realize that air flow on all 3 fans is essentially the same, so that is not a consideration. Anything past 25 mph, a fan is not needed anyway.
 
Tom,
If you cleaning the roadside, DON'T touch them corked up gallon jugs of some UNKNOWN YELLOW LIQUID, them dudes will BLOW UP, from sittin' in the HOT SUN!!!!!!:eek::eek::eek::eek::eek::eek: The fumes would probably power a Model A!
Bill W.

u mean these bottles;)
 

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