Scale RC Forum Forum Members’ Builds Off-Road builds Articulated Trial Car

This topic contains 83 replies, has 11 voices, and was last updated by Grasshopper 14 hours, 24 minutes ago.

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  • #103044
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    Hi there,

    my next long term Project is started. I’ll try to build something like the  Cournil ADR

    Key Features:

    Articulated hydraulic steering

    Rotatable rear

    and (because I always dreaming from my own portals ) portalaxles.

    Today I started the Project with a preliminary Work.

    Gears are expensive and I will need a lot of them  for the Transfer-Gearbox and the Axles.

    After a while searching  I found the “gear hobber”. A simple tool. Unfortunately I cant find them to buy. Ergo I try to build my own.

    Some C45-Steel , shaped in Lathe and Mill and hardened.

    IMG_5815

    First try.

    IMG_5816

    Works. But my hardening was suboptimal. The erosion is too much for a bit of brass.

    I’ll give it a second chance while I’m waiting for the hydraulic-parts.

     

     

    Regards

    Ralf

    #103049
    Member

    ScaleAddict
    • Scaling Like A Pro
    • ★★★★★

    Looks an ambitious project, in a good way.

    About making your own axles, by experience, don’t recommend for anyone. Kayhobbies sells the MST portals for a nice price. Not a long time ago, they had a discount

    #103051
    Sysop

    Retrocosm
    • Scale Off Road Pro
    • ★★★★★★

    Wow, you do set yourself some challenges!  I’m looking forward to what will presumably be quite an epic build 🙂

    #103052
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    don’t recommend for anyone.

    Why do you think so? Any hint is appreciated.

    you do set yourself some challenges

    Live is boring without challenges

    Regards

    Ralf

    #103053
    Member

    ScaleAddict
    • Scaling Like A Pro
    • ★★★★★

    It’s not to let you down on this project but ready-made axles are easy to get, not very expensive, work flawlessly and there’s spares for it.

     

    I only have the experience of doing the portal boxes for the Unimog. It’s not a full axle but the only stock parts are the housing and the differencial

     

    Had to get all the 12 pinions, 24 bearings, stub axles, drive shafts

     

    There was no MPA axles when I’ve started the portals because i would seriously consider that.

    And I’m a machinist so i had  my life easier

     

    But I’m not doubting your skills and will be following this thread

     

     

    #103066
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    Hi,

    its too warm to harden metal with big flames, so I’m lazy and ordered a set of modul cutters.

    Now I’m able to build simple gears without great costs.

    IMG_5819

    IMG_5820

    Next step is the transfer gearbox….

     

    Regards

    Ralf

    #103077
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    Transferbox in progress…

    Motorflangeside

    19B61561-AF51-459D-B37E-A28DB4BEDC29

    Gearside with the two matching pins

    and the holes for the ball-bearings

    F20A86DF-1D32-4A6B-91AB-F44C72DA3149

    A3CE5D05-DB40-4B41-B800-1F7979147A05

    Regards

    Ralf

    #103078
    Member

    ScaleAddict
    • Scaling Like A Pro
    • ★★★★★

    nice work,that’s taking shape

    Not a critic in any way but this thread shows that you’re german 🙂 . Many german projects I’ve seen  involve machining, gears, hydraulics .

    #103081
    Sysop

    Retrocosm
    • Scale Off Road Pro
    • ★★★★★★

    Wow, some very impressive machining going on here, wish I’d paid more attention in Metalwork at school.

    #103099
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    It‘s not to late 🙂

    I‘m just a programmer (with an old degree like the modern „master“) so I didn‘t have more connections to metal as open a beercan 😀

    All my simple skills I get just in the last three years with selflearning and much reading in the web. And much more try an error.

    Try it and have fun with metal!

     

    Regards

    Ralf

    #103104
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    The transfer gearbox is ready to use.

    1F9C5760-DE16-45C6-8CD9-287DB8D9CC2E8D4B3C13-16B7-4C3D-9829-E6488CFC4E606DFC6CFB-5745-4D54-BC03-8C7557AFF36D

    Twenty minutes warmup with full speed direct from 2s is well done.

    Its not too loud and were after the twenty minutes cold too.

     

    I‘m happy with that compact thing.

    Regards

    Ralf

    #103108
    Member

    ScaleAddict
    • Scaling Like A Pro
    • ★★★★★

    nice

    #103118
    Member
    Grasshopper
    Grasshopper
    • Scale Off Road Pro
    • ★★★★★★

    Great work, I’m interested to see how this fits with the whole

    Axial SCX10 Dingo    RC4WD TF2 Hilux     RC4WD G2 D90     WPL C14

    #103126
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    Thanks Guys.

    The first part of the central Joint is done.

    Milled from a full block of Aluminium 7075. ( airplane alu)

    This is harder and more springy than normal Alu.

    Because I will prevent any woodbranches get into the joint I made it very closely around the shaft.

    02C0AFDB-3F1E-4E1A-813A-D767C4EC5EEB2518546E-241D-4A34-A71F-03DF0B937797C0224FB8-CA48-4CB6-9073-28CAC047DB46

     

     

     

    the second part will be more complicated because it will be combined with the swivel.

     

    stay tuned

     

    Regards

    Ralf

    1 user thanked author for this post.
    #103134
    Member
    raven62
    raven62
    • Trailing And Scaling
    • ★★★★

    Hi,

    today the hydraulic-items arrive.

    IMG_5844

    Now I’m only waiting for the cylinders…..

    Meanwhile I build the second part of the joint.

    IMG_5845IMG_5846IMG_5847

    A careful test shows a smooth perfomance inclusive maximum tilt.

     

    Additionally I’ve built the swivel-axle from piece of silversteel.

    IMG_5849IMG_5848

    Regards

    Ralf

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