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  1. #1

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    afv432's T34 gearbox mod

    here you go

    at the start i used a set of asiatam gearboxes, a set of wsn t34 upgrade gears (only utilising the larger gear)

    some 5MM brass bar (driveshaft replacement) and a set of h/long drive shaft gears (metal)

    some 2 mm ally plate for the lower hull to add strength when removing the battery box







    i also added some brass to the front wheel supports as they were quite sloppy this tightened those up







    remove the h/long gear


    add this to the new drive shaft



    install into the tank hull and adjust the length of the shaft to match





    some packing may be required in the gear as it is actally 6mm id

    driled and tapped the gear so i could add some grub screws

    the finished mod








    this isnt the final draft but if you want to retain the rear end as intended this is the best mod for that but you lose a fair bit of speed but the torque is insane

    i will get some better pics of the whats in it now shortly






  2. #2

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    RE: afv432's T34 gearbox mod

    very nice job! running the original plastic gears from my h/l tiger and snow leopard eventually i will need to upgrade!
    just tanking around with my helis...

  3. #3

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    RE: afv432's T34 gearbox mod


    ORIGINAL: Scrooem

    very nice job! running the original plastic gears from my h/l tiger and snow leopard eventually i will need to upgrade!
    h/longs are even easier than that
    just swap them out
    although my 6 year old bulldog is still running the original plastic boxes only the slipper clutches glued solid helps there


  4. #4

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    RE: afv432's T34 gearbox mod

    This is brilliant! Thanks, AFV! Now if only I wasn't Ebaying my T34 ...

  5. #5

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    RE: afv432's T34 gearbox mod


    ORIGINAL: whiteknight1066

    This is brilliant! Thanks, AFV! Now if only I wasn't Ebaying my T34 ...
    quick pull it off!!!!


  6. #6

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    RE: afv432's T34 gearbox mod

    now for the latest design

    the compromise having to remodel the rear to accomodate the gearboxes



    the benefits normal speed good torque

    brass bushings replaced with tamiya sherman roller wheel bearings

    now the gearboxes are also angled down to the rear to get round the suspension housings but they are fixed to a 3 mm ally plate













    the finished article



    if anyone wants i can strip down the rear for a more indepth view of how and what ive done

  7. #7
    Panther F's Avatar
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    RE: afv432's T34 gearbox mod

    Wished you lived closer brother! I could use a few of these for my Russian Fleet!!

    Again, very nice work.



    - Jeff
    Building the British Sherman Mk.III ~ Mid Production Sicily

  8. #8

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    RE: afv432's T34 gearbox mod


    ORIGINAL: Panther F

    Wished you lived closer brother! I could use a few of these for my Russian Fleet!!

    Again, very nice work.



    - Jeff
    Many thanks pantherF

    not so great on the painting and weathering but im still learning that bit


  9. #9
    borealis's Avatar
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    RE: afv432's T34 gearbox mod

    Both mods are interesting, I wonder if the basics of the first one can be adopted using a stock HL gearbox.

  10. #10

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    RE: afv432's T34 gearbox mod

    Hi borealis
    i never tried the stock h/long gearboxes at the time of the first attempt as all that was out there was the higher ones ie tiger and pershing
    now with the jagdtiger and stug styles out there it's possible
    the other drawback would be the driveshaft with the asiatams a 5mm solid bar fits nice and is also the same dia as the sprockets as well
    so it keeps it simple
    if memory serves the h/long shafts are 6-7mm so you would need to reduce this to the sprockets?

  11. #11
    YHR's Avatar
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    RE: afv432's T34 gearbox mod

    Nice Mods. The T-34 is a good looking tank.

  12. #12
    borealis's Avatar
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    RE: afv432's T34 gearbox mod

    ORIGINAL: AFV432
    ...if memory serves the h/long shafts are 6-7mm so you would need to reduce this to the sprockets?...
    The coupling of the output shaft is 8mm, but the shafts are 5mms also on the HL gearboxes.
    The possible obstacle is the available width of the hull to house two gearboxes side by side and the external gear too (to replicate the first solution you described).

  13. #13
    Airbrushler's Avatar
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    RE: afv432's T34 gearbox mod



    Great job
    nice paint job to i haven't taken mine apart yet i have yet to see what the stock system looks like in mine

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  14. #14

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    RE: afv432's T34 gearbox mod

    Here is a Trumpeter T34 lower that I've been fiddling with. I'm not a big
    fan of stock HL gearboxes but I happened to have these around and I'd cleaned
    them up previously. There wasn't much to lose with these if it didn't work so I had a go.
    I made aluminum mounting plate, modified the gearboxes' output shafts and installed a
    brass driven gear for output. I like the low speed and torque. It has been a fairly inexpensive
    change; I'm converting the model to the RX18 and a DBU

    Jerry
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    - http://tanks.linite.com/

    ~ Ad maiorem Dei gloriam ~

  15. #15

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    RE: afv432's T34 gearbox mod

    Wow nice job Tanque

    the only thing i will say on mine over yours is that no special tools were needed only a dremel/hacksaw

    it definatley gives another option for these great but underpowered Tanks

    heres mine with the h/long leccies in it now sports an rx18 but you can get the idea from this of the layout



  16. #16
    Panther F's Avatar
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    RE: afv432's T34 gearbox mod

    ORIGINAL: AFV432

    it definatley gives another option for these great but underpowered Tanks
    AND as light as the tank starts out they are really agile and swift on the battlefield indoors. Lead weights really help it out, especially those wooden bridges.


    - Jeff
    Building the British Sherman Mk.III ~ Mid Production Sicily

  17. #17
    Airbrushler's Avatar
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    RE: afv432's T34 gearbox mod

    how do you get the original gearbox and drive wheels out i'm gutting mine to get it ready for new gearbox and electronics but i don't want to break anything taking them out i want to use the gearbox for something else
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