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F100 hubs - who knows the difference?

Discussion in 'The Hokey Ass Message Board' started by 40Tudor, Dec 29, 2007.

  1. 40Tudor
    Joined: Jan 1, 2002
    Posts: 635

    40Tudor
    Member
    from MN

    Re: the other discussion about loose bearing races

    http://www.jalopyjournal.com/forum/showthread.php?t=231329

    I cleaned up my other set of hubs and found that the internal details were different with nice big slots to facilitate removing the races.

    These hubs have a 36541 stamped on them (the others don't have any numbers on them). Anyone know what years these were used?

    BTW - The races were fine in the second set of hubs.
     

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  2. 40Tudor
    Joined: Jan 1, 2002
    Posts: 635

    40Tudor
    Member
    from MN

    Up once for the morning shift.
     
  3. yekoms
    Joined: Jan 21, 2007
    Posts: 1,088

    yekoms
    Member

    40Tudor,
    Thanks for the question. I'm interested also. Hopefully not a hijack just an 'add to" your question...
    What is the difference between the F1 and F100 brake stuff?
    Thanks,Smokey
     
  4. hard to see in your pictures , but both hubs appear to be dimensionally the same. there is a big difference between F-1 and F-100 hubs/drum.....f-1's are spaced out about 1/2" more. i say if the dimensions are the same on both hubs , use it

    these pictures will give you an idea...f-100 on the left and f-1 right

    [​IMG]


    [​IMG]



    yekoms...the backing plates , shoes and internal brake parts are the same for F-100 and F-1
     
  5. 40Tudor
    Joined: Jan 1, 2002
    Posts: 635

    40Tudor
    Member
    from MN

    Yup, both of my hubs are nearly identical on the outside. One has a small half moon cutout on the edge and the chamfer on the flange is a little bit different.

    Since those basic brakes were used from until 66, I'm wondering if some of the later trucks would be a source for hubs to fit early Ford spindles.
     
  6. If my memory serves me right :confused: , the F-100 brake drum is 1/2" wider than the F-1.

    This may account for the difference in the brake drum flange placement.

    I have F-100's on my '36 3-window and '47 Sedan Delivery. I'll take the 1/2" wider brake shoe, plus the F-100 drums can be bought at any parts house for about $45 each.
     

  7. can you measure the rear spacing on the f100 hub (flange to seal), i'm going to look at some this weekend and want to make sure that they are f100 and not f1's.

    thank you.
     
  8. BigC
    Joined: Jan 2, 2008
    Posts: 2

    BigC
    Member
    from Texas

    On a somewhat related subject: I have F-100 brakes on the front of my '39 and stock juice brakes on the rear with the stock master cylinder. Would it be a good idea to switch over to a dual reservoir master cylinder? Thanks
     
  9. Big C,

    There are two (at least) purposes for a dual master: one, because different designs of brakes may require more or less fluid to activate them, depending on a number of factors....for example, look at a '70s GM disc/drum master & one chamber is dramatically larger (in some applications). In the case of drum brakes, some wheel cylinders will require more fluid to move the pistons the required distance. This may or may not be the case in your situation. ? Chances are that this is not an issue, or much of one, for you, but it doesn't hurt to consider the cylinder sizes & diameters, along with the rest of the brake design, when thinking this over.

    The second reason is one of safety....so if one side of the system has a problem leading to loss of brakes, the other side (which is in effect a separate system) is still intact.

    There may be more to it all than these reasons, but that's my understanding of the reasons for dual reservoirs.

    BTW, welcome to the H.A.M.B. :)
     

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