|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
11-12-2017, 04:50 AM | #1 |
Senior Member
Join Date: Jul 2010
Location: United Kingdom
Posts: 1,439
|
Were 4-blade fans ever an original ftting?
Were 4-blade fans ever an original fitting on Ford As, or were the original fans always 2-blade?
|
11-12-2017, 06:07 AM | #2 |
Senior Member
|
Re: Were 4-blade fans ever an original ftting?
FAN and FAN BELT
Only two basic types of fans were used during the Model A Ford production. The first, used throughout production, was a steel, two-bladed, double thickness propeller type manufactured by Ford. In late July 1930, an engineering drawing was released for the production of a single thickness fan blade to be produced by Holley with a large radius. In late 1930, the single thickness fan blade was redesigned so that the large radius was eliminated. This latter fan blade was also used through the end of production. The 7 / 16"-20 (29 / 64" x 5/ 8") castle nut securing the fan to the water pump shaft was black enamel. Castle nuts had rounded grooves in 1928-1929 and castle nuts with square cut grooves began appearing in 1930 and by 1931 were predominantly used.
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II |
Sponsored Links (Register now to hide all advertisements) |
|
11-12-2017, 07:33 AM | #3 |
Senior Member
Join Date: Nov 2014
Location: Middlebury,Connecticut
Posts: 100
|
Re: Were 4-blade fans ever an original ftting?
I think the 4 blade fan was used on trucks. They can break blades like a 2 blade but it's not as common.
|
11-12-2017, 07:47 AM | #4 |
Senior Member
Join Date: May 2010
Location: Long Island, NY
Posts: 3,429
|
Re: Were 4-blade fans ever an original ftting?
None of the original propeller type fans have good fatigue life, and are prone to cracking. The fan blades see a combination of fore-aft bending and centrifugal tension loads that the sheet metal Ford & Holley designs are poorly designed to carry.
I installed a NOS Holley single thickness fan on my Coupe after its existing Ford fan cracked. The single thickness fan also cracked in less than 20,000 miles. The cast aluminum reproductions fan, because of its homogeneous casting, is far superior to the original fans.
__________________
Bob Bidonde |
11-12-2017, 07:52 AM | #5 |
Senior Member
Join Date: May 2010
Location: Eastern CT
Posts: 2,732
|
Re: Were 4-blade fans ever an original ftting?
Trucks did not come with 4 blade fans. That is an old wife's tale. The 4 blade fan was after model A production, and probably bought at western auto,or sears.
|
11-12-2017, 09:02 AM | #6 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 7,017
|
Re: Were 4-blade fans ever an original ftting?
Sponsored Links (Register now to hide all advertisements)
Charlie Stephens Last edited by Charlie Stephens; 11-12-2017 at 03:22 PM. |
11-12-2017, 09:10 AM | #7 |
Senior Member
Join Date: Jul 2010
Location: upstate NY near Mass border
Posts: 789
|
Re: Were 4-blade fans ever an original ftting?
Mike; What do you mean by "large radius" ? Jack
|
Thread Tools | |
Display Modes | |
|
|
Sponsored Links (Register now to hide all advertisements) |
|