3+R gearbox v2

[piterx]

Hi there!

this is the sequential gearbox i made for my Lancia Fulvia.

It's based on Sheepo's gearbox concept but it has a different activating system that, even if it's less precise, it's way smaller and lighter.

If you wanna see it in action watch the Fulvia's video below ;)

hope you have a nice reverse engineering session ^^

Edited July 9, 2013 by piterx

[cgg199]

Great gearbox, and I'll definitely be using a modified version for myself. Could you show a picture with all the shifting mechanism hidden so I can see the gears clearly?

[piterx]

here it is sir :)

if you use the auto clutch system here you'll need a brake system too....otherwise your car will gain speed in a slope without any chance to stop it remotely

anyway i suggest you to use it because it guarantees a smooth shift without grinding gears :)

ah, the gearbox is far from perfect...but it does its job

[Doc_Brown]

Very good! :thumbup:

Inside the red rings, they are just normal 2l connectors yeah? Not the fancy tan knobbly ones. :P

[piterx]

oh yeah i forgot to tell that thing :P

yeah, regular 2l connectors...and you have to put them in the way they slide with less friction possible

[cgg199]

And they have to a certain way around if I'm not mistaken, to reduce friction further.

[The Ghost Racer]

Good job! I am planning a gerabox trucks for trial, which is very heat resistant so as not to allow the gears to slip between theme, but I never have time panes to begin its implementation.

[cgg199]

You'll never guess what! I've modified this gearbox, and it fits in the space that I wanted it. It's slightly less accurate, but the shifter is more compact because the arm with the blue cross axles isn't there. I used worms gears instead, and the arm doesn't leave the area of the gearbox.

[piterx]

:D really nice man!

i'd be curious to see how you made it!

[cgg199]

I'll post a picture of the LDD file in a bit. It just needs some finishing off.

[piterx]

great :)

[cgg199]

There you are.

I don't know how it will perform in real life, but theoretically, it should be fine.

The bit that moves...

Edited July 12, 2013 by cgg199

[piterx]

nice one!

i just hope the sled won't wobble around :)

build it and let me know! it seems a nice solution anyway !

[cgg199]

Each of the 3L axles above the long worm drive, hold an 8 tooth gear, except the end ones. Due to them being 3 studs apart, the 4 stud gear rack, will always be in contact with 2 of the gears.

Unfortunately I don't have the right parts to build it, so I guess someone else will have to.

Edited July 12, 2013 by cgg199

[Doc_Brown]

@cgg199 if you would upload the lfx file, I Would be happy to give it a shot! :D

[cgg199]

Now how do I do that?

I updated the shifting mechanism, for a shorter gearbox!

Edited July 13, 2013 by cgg199