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Thread: Series one; 24 spline axles

  1. 2nd September 2012, 08:27 PM #1
    Andrew Morris Guest

    Series one; 24 spline axles

    I am hoping to embark on a 24 spline conversion in my series one.

    I have a pair of defender axles with all parts in them. Just trying to nut out the best way to get the axle shafts the right length?

    Can the defender ones be shortened and splined in the right place?

    Given that I would like to do the front axle as well, are series one shafts available and affordable??

    What increase in track would be required to fit discovery, RRC, series 2/3 shafts?

    What thoughts about fitting an adapting collar to allow 10 spline shafts to fit in 24 spline diff and cv joints on front axles? I am presuming the 24 spline is thicker than 10 spline!

    I have not opened up the axles (10 or 24 spline) yet to have a good look at the parts yet.

    Options wide open (except the spend huge amounts option!). Your ideas would be appreciated.

    Regards
    Andrew
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  2. 2nd September 2012, 08:44 PM #2
    uninformed
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    Contact Barry Ward at Hi-Tough engineering, Rycroft st City links estate, Carrara, Gold Coast. He builds axles for landrovers
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  3. 2nd September 2012, 08:58 PM #3
    Lotz-A-Landies's Avatar
    Lotz-A-Landies
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    Andrew

    converting a series one to RRc/Defender track width will mean an increase of over 6" which most certainly require engineering. You will also have conflict between your leaf springs and the RRc/Defender track rod that share the same space.

    If you also wish to convert the front axle to 24 spline, you are going to have difficulty finding half-shafts to mate with your tracta joints or uni joint swivels.

    I would be increasing to SII/SIII track width, you can then use an 88" front and rear axle housing onto your S1 springs. You are also (most likely) converting to fully floating axles which will aid the 24 spline conversion.

    For your front end I would be using Stage I swivels on an SII/SIII housing. Barry at Hi-Tough will then be able to make up your 24 spline halfshafts to mate to the Stage 1 CV joints. (Remember if you use the Stage 1 front housing, the diff pinion is at a different angel and should be used with a DC joint prop shaft)

    Also remember Stage 1 and post 1980 SIII have different wheel bearings, so to standardise on RRc/Stage 1/defender bearings, ideally you will fit stage 1 hubs to the rear axle.

    It will cost over $1,200 to have 4 half-shafts made up.

    BTW a Salisbury diff on the rear of an 86inch or 88inch series one is asking for problems with pinion length and prop-shaft angles.

    Hope this helps.

    Diana

    You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
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  4. 2nd September 2012, 09:19 PM #4
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    wrinklearthur
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    mix and match

    Wow Andrew!

    You are taking on some work there.

    The series one half shafts are shorter than the series two by about 20mm each.
    I have seen longer coarse spline 2A half shafts fitted into series one housings by using spacer's made from old driving flange's with their centre removed.

    I will have to check, but I think that the series three short wheel base rear half shafts still had course splines in the diff, .

    Again, I will have to go and check but there is a very slim chance that the shorter length half shafts from a series three salisbury may do the job.
    The difference in length from a defender rules those half shafts out, unless you bore out the driving flange and weld the half shafts in. In my experience, the welding of axles doesn't work as they break far too easily along side the weld.
    As for re cutting the spline to match the reduced length, that may work if the half shafts haven't been 'waisted'.

    Have you asked the blokes who do Hi-Tough axles about making a couple for you? and what ratio diffs are you looking to use?
    .
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