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Flathead Fan; Is this Safe?

Discussion in 'The Hokey Ass Message Board' started by gashog, Jul 6, 2007.

  1. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    Somehow the fan sticking out past the radiator shell doesn’t p*** the “look right” test to me. I have plenty of clearance between the radiator and the engine; is safety the reason most guys go with an electric fan?
     

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  2. Oilcan Harry
    Joined: Mar 3, 2001
    Posts: 906

    Oilcan Harry
    Member
    from INDY

    Uh.............no, thats not safe and, it won't pull any air through the radiator either. Different manifold, or different generator/fan set up, or an electric fan.
     
  3. Eyeball
    Joined: May 10, 2001
    Posts: 1,669

    Eyeball
    Member

    You can mount a fan to the intake with one of these.
     

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  4. HotRodJosh
    Joined: Jan 10, 2002
    Posts: 321

    HotRodJosh
    Member

  5. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    Thanks for the reality check. The intake is the style without provision for a fan mount; guess I'll have to go with an electric fan.
     

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  6. Mercmad
    Joined: Mar 21, 2007
    Posts: 1,383

    Mercmad
    BANNED
    from Brisvegas

    Shame to have to ruin the effect with some generic plastic fan,why don't you make a little bracket to mount one of those adjustable stands as pictured,using the front of generator as the fan hub ( '48 lubed type hub works great)? .
    The genny still mounts like you have but little chance of chopping up people as they go past.:D
     
  7. klazurfer
    Joined: Nov 21, 2001
    Posts: 1,596

    klazurfer
    Member

    :) What you have is the Early style Edelbrock "super" ... like `46-`47. this was ment to be a race manifold , but later it was sold as a street manifold , and came with a fan suport.
    Go with what Mercmad said ! good advice!! ...
    klaz:)
    Bell auto Parts `48 :
     

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  8. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    Good idea, I should be able to come up with something to mount the fan in the center. Any chance since I am running the car without engine cowling and the flatty is pretty mild, I might be able to get by without a fan?
     
  9. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,676

    Kevin Lee
    Super Moderator
    Staff Member

    Tardell sells a pretty clean looking little adapter that uses the front-most four bolts of the intake. I guess you would then have to then stack it with the Speedway adapter pictured above. But I bet if you saw a picture of both of them you could make a part to do the same thing with a few short lengths of tubing and some plate.
     
  10. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,676

    Kevin Lee
    Super Moderator
    Staff Member

    Tardel's part. (via Weiand - scroll down to the bottom of the page.)
     
  11. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    Thanks for the lead on the Wiand bracket. It gives me a good idea of what I'll need to make up. I have a spare generator I could use for the shaft bearing mount. I'll post back with a couple pix when I get it fabbed up.
     

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  12. shovelrobert
    Joined: Feb 4, 2005
    Posts: 3

    shovelrobert

  13. A Chopped Coupe
    Joined: Mar 2, 2004
    Posts: 1,133

    A Chopped Coupe
    Member

    I think everyone has answered your question.............so, here is an electric fan I am using on my AV8 Coupe. It's a three core with shroud and 17" fan.
    If you are going for "the old look" a real fan looks period correct.

    Oh................a flathead will not run without a fan cooling the radiator unless you are doing 70mph on the open road on a cool day. IMHO
     

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  14. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    Thanks for the advise on my other questions, A Copped Coupe.
     
  15. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    Bracketless manifolds were also sold as street manifolds for '39-41 type Fords, which had fan on crank and so needed no further mods when generator was moved over to head.
     
  16. 39cent
    Joined: Apr 4, 2006
    Posts: 1,569

    39cent
    Member
    from socal

    As I remmbr way back we didnt run a fan, but then there werent many freeway parking lots. HMM maybe we were goin a little fast.
     
  17. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    I ended up fabbing a bracket for the front of the intake to relocate the fan on an idler made from an old 3-brush generator. Thanks Mercmad!
     

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  18. knotheads
    Joined: Jan 4, 2007
    Posts: 499

    knotheads
    Member

    those old flatties are prone to cracking even under the best of cooling conditions.....why take a chance?
     
  19. J'st Wandering
    Joined: Jan 28, 2004
    Posts: 1,772

    J'st Wandering
    Member

    How is the fan mounted? Is the shaft fixed in the generator housing? What did you use for bearings?

    Neal
     
  20. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    The fan is bolted to the mounting bosses on the early 3-brush pulley and the bearing plates are bolted to the custom intake bracket.

    The pulley limits rearward motion and a step in the armature takes forward thrust.

    The armature is supported by the stock bearings in the front and rear generator bearing plates. I cut the armature just forward of the windings and turned down the stub to fit the bearing in the rear plate.

    I have more information on how I did the idler on my post at:
    http://www.jalopyjournal.com/forum/showthread.php?t=193612
     
  21. J'st Wandering
    Joined: Jan 28, 2004
    Posts: 1,772

    J'st Wandering
    Member

    I see now how you did it. Seems like a good fix to the problem.

    My two cents would be to watch and keep that back bushing lubed because the leverage on it will be higher than when it was in the generator. Hate to run the fan through the radiator.

    Neal
     
  22. Flat Ernie
    Joined: Jun 5, 2002
    Posts: 8,406

    Flat Ernie
    Tech Editor

    Neat solution! I like it!
     
  23. gashog
    Joined: Dec 9, 2005
    Posts: 986

    gashog
    Member

    The neat thing about the early generators is that BOTH the front and back bearing plates have lubricator holes!
     
  24. Fe26
    Joined: Dec 25, 2006
    Posts: 540

    Fe26
    Member

    Neccessity is the mother of invention, well done, a simple solution to a simple problem.
     

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