sequential gearbox 6 speeds + R + N

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This is a sequential gearbox with 6 speeds, neutral and reverse speed.
It use rotary catch's and the blue 20 tooths which appeared in the #42083 Chiron.
the differents ratios are :
• speed reverse, ratio -1:1,5 ;
• speed neutral, ratio 0 ;
• speed 1, ratio 1:1,25 ;
• speed 2, ratio 1:1 ;
• speed 3, ratio 1:0,75 ;
• speed 4, ratio 1:0,6 ;
• speed 5, ratio 1:0,417 ;
• speed 6, ratio 1:0,333 .

More details are available on Techlug (french forum).

[2019/01/22] :  instructions update to fix a bug which blocks speeds (and broke few 8T gears ...). The first change appears in step 24 with a voluntary "white false color " technic Axle 3.
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MOC-28854

Name sequential gearbox 6 speeds + R + N
Designer TechToth
Designed 2019
Inventory 200 parts
Theme Technic
Old Trafford

10 COMMENTS

  • 5 months, 4 weeks ago 1963maniac Level 18 MOC Designer
    I'm liking this!! Having the axle sizes in the BI would have been appreciated. Two Technic cams can replace the 98585 part if you don't have one.
    • 5 months, 4 weeks ago TechToth Level 5 Designed this MOC
      Thanks,
      I agree with the size in the parts list in instructions, i just didn't find this option on Studio.
      The technic cam is a good idea (more common part but less aesthetic construct), I didn't think about it.
  • 5 months, 4 weeks ago Tec-Sau Level 16 MOC Designer PRO
    Very nice!
    You could consider changing the color of the light gray parts in the inventory to light blueish gray to increase the "you have"-percentage for many users.
    • 5 months, 4 weeks ago TechToth Level 5 Designed this MOC
      Thanks,
      The light gray parts were an error automatically generated by my studio file, I thought I had changed them all. It's done now.
  • 5 months, 4 weeks ago brunojj1 Level 10 MOC Designer
    Thanks for sharing, I love that unconventional approach, the mix of old/new parts! So I´m building it to understand everything, then go to my workbench with fresh ideas :-)!
    • 5 months, 4 weeks ago TechToth Level 5 Designed this MOC
      Coming from you it makes me happy :). For my part I'm a great fan of your McLaren P1.
      The differential is the master piece of this gearbox and it force to use the gray 16T gear with clutch instead of the red version.
      Otherwise the 2L driving ring could be replaced by the 3L version, which would imply to have a MOC 2 studs longer.
      I you want the french forum on Techlug have a lot of details about this MOC.
      And I can not wait to see what you will do with this !!
  • 5 months, 4 weeks ago nigel1975 Level 24 PRO
    Nice work, the transitions look smooth and the gearbox looks very robust. Would be great to see this translated into a full vehicle MOC, maybe an upgrade to Sheepo's Land-Rover Defender - there might be enough room to work with at this scale.
    • 5 months, 4 weeks ago TechToth Level 5 Designed this MOC
      Thanks,
      I confirm, the gearbox is intentionnally robust and compact;  the transitions are actually smooths except for the passage from the third to the second speed (see on Techlug forum in part VII) ).
  • 5 months, 4 weeks ago xilanium Level 25 MOC Designer
    Fantastic! Well done!
    and the Techlug article is excellent, really documented ;)
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