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Driveshaft u-joint "conversion"

Discussion in 'Modified 1991-1994 Explorers' started by Glasken, April 23, 2017.

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  1. Glasken

    Glasken Elite Explorer

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    Hey guys, oddball question for ya:

    Would it be possible to add a double cardan cv h yoke to the transfer case side of the rear drive shaft in a 1993 4 door explorer?

    Stay with me a second...

    So I did a SOA conversion, and because I didn't check my math when we welded the new perches I have about a 7* positive angle on my pinion (pinion is pointing up at the xfer case). My rear driveshaft is a conventional double yoke, which means there will be some issues with the angles from the xfer case to the pinion being different.

    The late Broncos and early 90's f150s have a double h yoke on their driveshafts. Can anyone think of any negatives to adding such a yoke to the xfer case side of my driveshaft to eliminate the pinion angle issue (rather than cut and reweld the perches, which would be the correct thing to do). Adding the new h yoke would also have the effect of a spacer to shore up any reach issues with the SOA.

    The H yoke from a Bronco or early f150 has the same dimension bear cap holes and snap rings as the first gen explorer: http://www.dennysdriveshaft.com/p975_ford_cv_h_yoke_1330_series.html

    Looking forward to your opinions, thanks!
     
    Last edited: April 23, 2017
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  3. Glasken

    Glasken Elite Explorer

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    Provided the yoke fits my driveshaft, this is what I am hoping the setup would look like after adding the h-yoke:

    [​IMG]


    My driveshaft currently has a connection that looks like the bottom one in this image, and would like to add the h-yoke as shown on top:
    [​IMG]

    Hope that helps clarify my intentions are. Thanks!
     
  4. FR-425

    FR-425 Used to be a road here. Elite Explorer

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    You can use shims to correct the angle.
    [​IMG]
     
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  5. yostyexplorer94

    yostyexplorer94 Yost Offroad Staff Member Moderator Elite Explorer

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    I believe a 1995ish ranger double cardan shaft bolts up. You would probably need to lengthen it. Check at your local junk yard.
     
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  6. boominXplorer

    boominXplorer Elite Ranger Elite Explorer

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    95&96 sport 4wd come factory with a rear double cardon shaft. You could get one then have it extended.
     
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  7. BKennedy

    BKennedy Elite Loser Staff Member Moderator Elite Explorer

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    I have had double cardon joints at the transfer case on both shafts for years with no issues.
     
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  8. gmanpaint

    gmanpaint It's Always Something! Staff Member Moderator Elite Explorer

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    Whats the angle degree at the T-case flange? As long as your within 4* of each other, you should be fine. If over a 4* difference, those pinion shims do work well, and come in a variety of degree sizes. You can add to front to raise, and add to the rear to lower, the diff flange.
     
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  9. Glasken

    Glasken Elite Explorer

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    I'm sitting at about 8* off relative to the tcase.

    Small update: I went ahead and ordered the 95/96 explorer h-yoke and an extra u-joint. Will see if that solves my problem or not. Will be back in a bit with the results. Thanks for the advice everyone!!
     
  10. yostyexplorer94

    yostyexplorer94 Yost Offroad Staff Member Moderator Elite Explorer

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    You can't just add a double cardan to your single joint shaft.
    [​IMG]
    If all you ordered was the h part, you should probably cancel your order.

    The route I would take is to get a junkyard shaft that bolts up, have it rebuilt, and probably lengthened.
     
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  11. Glasken

    Glasken Elite Explorer

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    That was the question I was originally asking. Care to explain why adding the missing pieces wouldn't work?
     
  12. gmanpaint

    gmanpaint It's Always Something! Staff Member Moderator Elite Explorer

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    Dbl C has a bearing joint in the center of the shaft end. I think it needs this for the extra U-joint / H to work properly.
     
  13. Glasken

    Glasken Elite Explorer

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    I see what you mean. Looks like the shaft itself also has a piece that fits into the middle bearing. Guess like I'm headed to the scrapyard again.
     
  14. Glasken

    Glasken Elite Explorer

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    Ended up taking my stock driveshaft to have the correct double cardan joint welded on, and the shaft itself resized. Fits really well so far. We'll see how it works on the trails.
     
  15. rabbit91

    rabbit91 Active Member

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    bump how did it work out ?
     
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  16. JONATHAN KRICZKY

    JONATHAN KRICZKY New Member

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    I make those parts. Well I did till they where shipped to Mexico. got some laying around here about to get rid of that troublesome front driveshaft on mine.
     
  17. Glasken

    Glasken Elite Explorer

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    After the mods, there are no more vibrations from the rear at speed. Very happy with the job by AZ diff and driveshaft.

    Since the driveshaft was modded, we made a few changes to the rear including new spring perches, 1 more inch of lift, and a corrected pinion angle. Drives much better on the highway.
     
  18. Spudhut

    Spudhut US Navy Submariner Elite Explorer

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    If using a DC driveshaft, do you measure angles on the DC joint?
     

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