old tractor LANZ HP 4WD 1923 (scale 1/4)

Discussion in 'Engines From Castings' started by ZAPJACK, Jan 5, 2018.

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  1. Jan 5, 2018 #1

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    Dear all,
    I'm really disappointed because I want to be more active on HMEM, but not yet retired and have "only" 28hours in a day.
    I start a very exciting model build in Germany by JT-modelle (Tobias & Klaus)
    Don't hesitate to take a look on www.jt-modelle.com
    Quality castings in Cast-iron, Aluminium, Zamac, folded steel profiles, internal-gear, etc...
    Two stroke engine, differentials, reductor, clutch, gearbox, it's a very complete kit.
    I wil also keep your attention about the "5 stars" "after-sales" service.
    LeZap
    Detailansichten 2.pdf

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  2. Jan 6, 2018 #2

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    I start the kit with the machining of the wheels. at first, the flanges from bar-stock aluminium foil. After that, machining in steel the diabolo form bearing holder. Four time the same. Start the assembling of the spikes, rims, everything with copper rivets and rivets-gun.
    The supplier for the rivets-gun and the rivets is www.ateliermb.com in Switzerland.
    Regards
    LeZap

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  3. Jan 7, 2018 #3

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    Here is the riveting of the pads on the rims.
    General view of the spikes when painting
    détails of the wheels and the four wheels together.
    Amazing that the small wheels are on the back side of the tractor !
    LeZap

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  4. Jan 7, 2018 #4

    Herbiev

    Herbiev

    Herbiev

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    Looking great so far. Thanks for sharing.
     
  5. Jan 8, 2018 #5

    dozerdroid

    dozerdroid

    dozerdroid

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    Thank you for sharing, I'm going to enjoy this one.
     
  6. Jan 8, 2018 #6

    ncoonen

    ncoonen

    ncoonen

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    That looks like an outstanding model. The video clip on https://www.jt-modelle.com/ is very intriguing.

    Is the kit sold by jt-modelle.com or somewhere else? I did not see any kit information on their website.

    Please keep us posted with your progress.
     
  7. Jan 9, 2018 #7

    kadora

    kadora

    kadora

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    Hello ZAPJACK
    Is possible to buy this kit ?
     
  8. Jan 9, 2018 #8

    wirralcnc

    wirralcnc

    wirralcnc

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    Count me in for a kit
     
  9. Jan 9, 2018 #9

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    Dear, of course is possible to buy a kit.
    Please contact directly jt-modelle in Germany. mailto: jt-modelle@gmx.net
    they speak english
    Regards
    LeZap
     
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  10. Jan 20, 2018 #10

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    The aluminium casting block is aways a problem, because there is no flat side
    And you need to check to have, at mins, two faces flat and square at 90°
    Boring is also a challenging job, because it's a long bore with vibration risks for the tool.
    There is an idea of tooling made from 20mm silver steel and HSSCo cutting end.
    I made also a jig of the opposite side to avoid the vibrations. The result is quiet good with an error of 0,05mm (0,002")
    LeZap

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  11. Feb 3, 2018 #11

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    The cylinder is coming from GGG60 Iron-steel, nothing special to made it, just the transfer port are inside
    LeZap

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  12. Feb 18, 2018 #12

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    The connecting rod is made from aluminium bar-stock.
    LeZap

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  13. Feb 25, 2018 #13

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    P34 is the raw machined half crankshaft
    P54 is the mounting jig. this is to have the same centering on both half crankshaft
    P55 machining the crankshaft
    P56 all the parts before assembling
    P57 hot assembling by expansion
    Regards
    LeZap

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  14. Mar 10, 2018 #14

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    The motor blok is quite complicate for machining
    Need to respect the orthogonality of the difference axles.
    Many checks, measurement, zéro setting .....before machining
    But I let you discover by the pictures
    LeZap

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  15. Mar 25, 2018 #15

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    Some other picture of the engine bloc.
    On a sinus-table is much more easy
    LeZap

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  16. Mar 25, 2018 #16

    johnmcc69

    johnmcc69

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    Nice work! That's going to be a real nice model.

    John
     
  17. Apr 1, 2018 #17

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    First blank mounting of the crankcase
    Machining of the cylinder-head on a centering jig
    Piston made from cast from cast iron
    LZ

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  18. Apr 8, 2018 #18

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    This is the oil pan & oil pump.
    Not truth but simply factice
    LeZap

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  19. Apr 25, 2018 #19

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    Now, one of the flywheel in cast iron
    LZ

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  20. May 1, 2018 #20

    ZAPJACK

    ZAPJACK

    ZAPJACK

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    This is the front differential housing.
    Must be machined carefully, because there is no "second chance"
    LeZap

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