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Technical Banjo Question

Discussion in 'Traditional Hot Rods' started by 1oldtimer, Jul 27, 2012.

  1. Haven't had too much experience with them so...... I have a '46 truck open drive rear and want to put it under a '28 Tudor, but it's a little too wide (has fenders). I might be able to get some '35/'36 bells and axle shafts, will they fit to the '46 center to make an open shorter rear or should I keep looking for a '35 rear and just swap brakes/yoke?.
     
  2. flathead okie
    Joined: May 22, 2005
    Posts: 1,480

    flathead okie
    Member

    good question. Hope you get an answer
     
  3. pasadenahotrod
    Joined: Feb 13, 2007
    Posts: 11,772

    pasadenahotrod
    Member
    from Texas

    OK use the 35-36 axle housings and axles from 39-41 with are 32.85" overall length and have 16 teeth on the gear along with your 42-47 open drive banjo/differential setup.
     
  4. Thank you. I'm****uming the difference lies in the tooth count between the 35/36 and the 39-41 axles. Also will the backing plates/brakes bolt up to the 35/36 bells, again I'm****uming that the hubs from the 46 truck will fit too.

    Looks like I need to do more research about banjos now....:D.
     
  5. Angry Frenchman
    Joined: Feb 12, 2006
    Posts: 1,775

    Angry Frenchman
    Member

    the brakes and hubs will fit. also you will have to use the bearing from the 35 36 carrier on the 46 carrier. 35-36 bearing are narrower than 37-48.
     
  6. Ok I found out from a google search (duh), that the 32-34 is the closest in size. I guess I need to ask another question then.

    What would be the strongest/best open drive banjo axle to have (using stock parts) to fit under the '28 with stock fenders, I would like to keep the '35 wires close to centered in the fenders. It's not going to be a drag car, maybe a mild 322 nailhead or flathead.
     
  7. Angry Frenchman
    Joined: Feb 12, 2006
    Posts: 1,775

    Angry Frenchman
    Member

    35 36 is stronger than 34 and down axles. I think there all****y looking axles and there very straight forward to work on. How ever there are lots of diffrents between these rear axle. And take it easy on them! There like a cat with nine live, If you beat on them sooner or later they will brake.
     
  8. So-Cal Speed Sacramento
    Joined: Sep 6, 2008
    Posts: 459

    So-Cal Speed Sacramento
    Alliance Vendor
    from Sacramento

    X2. if you run the 1935-1936 bells, used the earlier 'bones too. they look great under a hot rod, and will keep the spring in tight.
     
  9. Not a problem, right now unless it blows up it's running a 2.0 pinto that's getting a few hop up parts. When I change the rear back to a banjo I want to set it up for future motors also.
     
  10. Angry Frenchman
    Joined: Feb 12, 2006
    Posts: 1,775

    Angry Frenchman
    Member

  11. stillrunners
    Joined: Aug 27, 2009
    Posts: 10,579

    stillrunners
    Member
    from dallas

    what a nice thread....
     
  12. So, I heard about some banjos had a pinon support bearing and some didn't.....is there a year cut off?. I have the '46 truck banjo and now I have an opportunity to get a '35 complete rear, should i still stick with the '46 center or go with the '35 rear?.
     
  13. F-6Garagerat
    Joined: Apr 12, 2008
    Posts: 2,652

    F-6Garagerat
    Member

    I have a 42-48 open drive center with 37-41 bells, axles. Make sure you use the right spiders for what ever axles you use. They will bolt together but not let the axles turn around corners and will break something eventually.
     
  14. Ok, getting closer to putting this rear together. So it's going to be the '46 center section with '35 bells and '39-'41 16 tooth axles. I have all the parts 2 complete rears ('46 open, '35 car) and 2 axle shafts. Still need to get new bearings.

    So I need to use the carrier bearing from the '35 on the '46 center and make sure the teeth count match on the spiders/axles. Anything else to look for?, since this is my first banjo rebuild is there any books or literature out there to help other then the posts here. I've read the rebuild posts here and checked google, I also didn't see a tardel book for rears.
     
    Last edited: Sep 30, 2013
  15. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    Summary...banjo casting and inner dif case same. Axles divide very roughly '35-7 and '38-41 by tooth count, use whatever you find all the bits for.
    Rears have a good tech here in the archives, factory tech was summarized in 1938 bulletins. There's an excellent chance if all parts are original that whatever heap of parts you choose will go together with the standard 010 gaskets. I always reccomend, though, that you measure the gaskets on both rears if you have them just as a reference and starting point...
     
  16. Good point about measuring the old gaskets. I forgot to add that I do have the gasket kit. Any place better then others for the bearings or yoke seal?. I contacted Hot Rod Works since they show Timken bearings. I know BCA are good also, but short of pulling the old bearings out and crossing the numbers the kits are all I have to go on.

    If the bearings are still good in the '46 I might just run them, the '35 had water in it so I would say the bearings in that one are gone.
     
    Last edited: Apr 12, 2013
  17. You are correct sir, the side bearings are bigger on the '46 truck then the '35 car. Can I just get the bearings for the '35 and they'll fit the '46 center, I need to measure when I get home (and get some good bearing splitters). I took apart both this weekend and the '35 can be saved lucky it had years of oil buildup to fend off most of the water. The '46 truck is almost new looking inside, some small pitting on the side bearings but that's it. I get to keep the pinion intact (but replace the seal) and install new side bearings.
     
  18. woodypecker
    Joined: Jan 23, 2011
    Posts: 300

    woodypecker
    Member

    It is fun to learn to play the banjo. It appears you are doing well.
     
  19. Ok, another question. Will the side bearings from a 35/36 fit the side of a '46 truck?. All my tools are at work, so I have to go to a friends shop to get this apart (plus I don't have a press at home).
     
  20. mlagusis
    Joined: Oct 11, 2009
    Posts: 1,252

    mlagusis
    Member

    Hot Rod Works in Nampa Idaho is a good resource for banjo rear ends. Their website has detailed differences between the different years and they sell parts for these too


    Posted using the Full Custom H.A.M.B. App!
     
  21. They sell full rebuild kits, I just need side bearings.
     
  22. It looks by this picture you pushed the bearings all the way down. I just noticed on mine that the '35 bearings are thinner, with them pushed all the way back the hub sticks out a little. I was wondering if I need to make a spacer to go under the bearing or will it work the way I have it now. I'll try to put it together this week to find out.

    [​IMG]
     

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