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Old 10-21-2018, 06:15 AM   #1
Steve in Tampa
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Default 4 blade fan woble

I want to know if anyone has a good method to fix a 4 blade wollard out fan hub? thanks, steve
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Old 10-21-2018, 07:25 AM   #2
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Default Re: 4 blade fan woble

Replace with new aluminum two blade fan and leakless water pump.

Two more problems solved. Enjoy.
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Old 10-21-2018, 07:30 AM   #3
JOHN CT
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Default Re: 4 blade fan woble

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Replace with new aluminum two blade fan and leakless water pump.

Two more problems solved. Enjoy.
WHN is absolutely right!! Why do you need a four blade fan? Do you have some sort a hot rod that you need a four blade fan?
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Old 10-21-2018, 08:23 AM   #4
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Default Re: 4 blade fan woble

The two blades of the airplane type fan is plenty to move the air. Many airplanes only have two blades on a motor.
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Old 10-21-2018, 09:56 AM   #5
whirnot
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Default Re: 4 blade fan woble

A two blade fan is said to actually move more air than a four blade, according to some one that did an actual study on it.
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Old 10-21-2018, 10:25 AM   #6
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Default Re: 4 blade fan woble

Once your tapers don’t match, pitch the fan. Like the guys say, put on a new two blade and make sure the tapers match. Don’t run with a really tight belt. A tight belt loads up that taper joint.
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Old 10-21-2018, 07:24 PM   #7
Steve in Tampa
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Default Re: 4 blade fan woble

looking at this closer ,found out that the rivets that hold the hub to the fan (4) were loose. I might try to tighten them up and see how that goes. thanks to all, steve
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Old 10-21-2018, 07:52 PM   #8
heneste
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Default Re: 4 blade fan woble

Just be warned, if it wobbles too much it could stress or fatigue the blades. Make sure your fan is still in good condition and running in a balanced fashion. I had one of those four blades on my car originally but one of the blades decided to crack and let go. Still have the hood dimple as a reminder.
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Old 10-21-2018, 08:27 PM   #9
Tom Wesenberg
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Default Re: 4 blade fan woble

I wouldn't risk body damage. Better to buy the aluminum fan.
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Old 10-22-2018, 06:35 AM   #10
WHN
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Default Re: 4 blade fan woble

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Originally Posted by Steve in Tampa View Post
looking at this closer ,found out that the rivets that hold the hub to the fan (4) were loose. I might try to tighten them up and see how that goes. thanks to all, steve
Please listen to to the posts you have gotten.

Old fan blades are known for breaking at speed. The damage that could be done is not worth saving the cost of a new blade.

If it happens when you have the hood open, someone could get really hurt.

This is a “known” problem with Model A fan blades. Change the blade.
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Old 10-23-2018, 07:16 PM   #11
CarlG
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Default Re: 4 blade fan woble

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Originally Posted by Steve in Tampa View Post
looking at this closer ,found out that the rivets that hold the hub to the fan (4) were loose. I might try to tighten them up and see how that goes. thanks to all, steve
If you are "hell-bent" on fixing your 4-blade fan, just drill out the rivets and replace them with aircraft grade bolts and lock nuts. And only do that if everything else about that assembly is A-OK.

Otherwise you will take the chance of wiping out your perfectly good radiator. Don't ask me how I know this!

(BTW -- I am now using one of those 6-blade plastic fans)
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