LEGO 4 Speed Linear Gearbox, 2 Outputs
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- čas přidán 2. 03. 2012
- A design for a four speed gearbox, with two output axles - one for drive, and the other for PTO (power take-off) to power a winch or other mechanism.
When the drive motor is spinning the gear change is very smooth, and can be controlled by a single LEGO motor. There is only a small position between each gear when the gearbox is in neutral.
PTO gear (far right) = 2.083 : 1
1st gear (centre right) = 1.667 : 1
2nd gear (centre left) = 1.000 : 1
3rd gear (far left) = 0.600 : 1
Extra gears could be added to get a five speed gearbox (or more), with the only limitation being the length of the axle supporting the worm gears and the two axles on the sides that allow the gear selector to slide back and forwards.
One problem with the current design is that there is a little bit too much play in the sliding mechanism, and this causes the gears to jump and grind when the outputs are under load.
More information can be found in this forum post:
www.eurobricks.com/forum/inde...
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This model is not an official LEGO set.
This model is not for sale.
I do not have building instructions for this model.
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LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this video. - Věda a technologie
Check out my other Lego Technic Gearboxes!
Lego Technic Smooth Linear Gearbox: czcams.com/video/CBBlflmi41U/video.html
Lego Technic Gearboxes Playlist: czcams.com/play/PLY5_lYb67lhEjV5oLJJpMovte_PSSN6Ma.html
excuse me, I currently was wondering if you can provide me the technical information for the making of gears or something like that? I mean, a web page, or a manual of instructions, etc.?
thnk u
If you want a good introduction to Lego Technic in general, then I recommend the book "Unofficial LEGO Technic Builder's Guide" (nostarch.com/technicbuilder2).
If you want more information about Lego Technic gearboxes in particular, then I recommend looking at videos on CZcams or reading some forums. For example: www.eurobricks.com/forum/index.php?/forums/topic/150313-gearbox-collection-thread/
Most of the larger Lego Technic sets include some sort of gearbox, and you can download the instructions for these sets from the Lego website: www.lego.com/en-au/service/buildinginstructions
Apart from that, sometimes it is just a matter of getting your hands on some Lego pieces and trying things out.
S. L. Froden can you try to make instructions.
+Preston Gravy - I'm sorry, I made this gearbox over six years ago, and I haven't made instructions for it in all that time. While I won't say that I will never make instructions for it, I won't be making them anytime soon.
This gearbox is a proof-of-concept, and as such it demonstrates an interesting mechanism, but ultimately I consider it a failure. Under load, the gears start to slip and grind. I don't want you (or others) to ruin your Lego gears. I would rather that you take my original concept and adapt it to your needs to make your own gearbox.
I made a much better gearbox (which I did make plans for) here: czcams.com/video/CBBlflmi41U/video.html
@@slfroden Make a more complex gearbox.
This is some pretty good camera quality for a random video from 7 years ago.
8 years ago*
@@navilhossain6212 30 Years Ago*
2012 bro
@@_-.G.-_ 67 Centuries ago*
Actually 8 now
7 years later I get recommended this
Lego engineers > Nasa engineers
Lego engineers = nasa engineers before they were nasa engineers
I know right? Space Shuttles should have gearboxes xD
Smart Roadster gearbox. Now I understand those slow changes.
I know this is 6 years old but this is a really badass gearbox design.
Thanks :-D
This is so freakin cool, I’m mechanical engineering student and I’ve always found gears and moving parts and such so fascinating
Made in 2012 , recommended now. 🤔
Бывает
Wow, this is an ingenious piece of engineering.
Nice and simple, even without the driving gear. Have to try, thanks for sharing the principle!
This is awesome. It projects the beauty of your technology, designing skills, intelligence and beautiful mind.
This is way cooler than i first thought
+Aidan Holloway - Thanks :-)
Really cool idea, I never thought make a transmission like that, and also I must say that the light conditions and the quality of the video are excellent. :D
Now I understand how it works
Awesome! Exactly what i searched for :)
Thanks!!!
Very well done. That's nice👍🏾
I've been looking at a bunch of these, but this seems to be the best based on how smooth it shifts gears, unlike EVERY other one I've seen (except a 2-speed automatic).
Thanks :-)
I also made another 'smooth' gearbox that I think is better than this one, which you can see here: czcams.com/video/CBBlflmi41U/video.html
Nice build
WOW this is so cool and compact ive never been able to make an efficient gearbox remotely that small. XD
Awesome, thanks for this. I will probably be making a crawler as a long term project, and this seems like the perfect transmission
As long as the gear selector is supported properly this gearbox works well. If you don't support the gear selector properly, the gears can jump/skip under load.
You might want to check out one of my other gearboxes which (I think) works better than this one: czcams.com/video/CBBlflmi41U/video.html
Good luck with your crawler.
Thank you! I love your work!
Would be pretty sweet to see this on a buggy using this transmission.
YEAH!
This video makes my day.
Nice! In my JCB tractor, I used a 2-gear gearbox, because in general there's not much room for so many gears.
MAN you , you , you cool boy , you helped me!!! Thanks bro
I’d been planning on making a detailed RC car for a while, and this may be the perfect transmission design. I’ll have to rework it a bit to be shifted using a PF servo, but that shouldn’t be too difficult
The mechanism is really interesting...
Everything you make is awesome damn.
Thanks :-)
That's incredible
Dude... genius.. very cool box
Wow great job
Nice, I definitely picture myself using this gearbox in an rc car(with some additional attachments to connect the reverse gear to the main axle). Of coarse I'd need the pieces. And a design. And some wheels. And... well, you get it. But otherwise, nice build!
Wow actually has a smooth transition as well....
Nice 3-2-1-R
Crazy how nature do that
clever design!
Very well designed
This is amazing!
Perfect sync mesh to
That’s a 3 spd with reverse. Still cool though
That makes 4 speed
That’s well ingenious!
Thats awesome!
Wow, this is a very cool gearbox! No need for strings like in a 90° shifter.
If you can find a way to change gear faster that would be pretty cool.
L Engine
Switch the gearing around
Just change the gearing of "the worm"
Truly remarkable!
GENIUS!
This is very cool
Nice Video
Next to debut in chevy's 2022 lineup!
the slowest shifting 3-speed and reverse manual shifter ever!
Very cool dude. Used it for my lego rc car
I'd love to see your Lego RC Car... Do you have a video?
@@slfroden I'm sorry I already broke it down so I could make another car.
@@slfroden can you please make a tutorial for this? It would be very helpful to some people. Because this is a great design.👍👍
Thanks for your feedback.
I don't have any plans to make a tutorial/instructions for this gearbox at the moment.
This gearbox is a proof-of-concept, and as such it demonstrates an interesting mechanism, but ultimately I consider it a failure. Under load, the gears start to slip and grind. I don't want you (or others) to ruin your Lego gears. Of course, I'm happy if you take my original concept and adapt it to your needs, making it stronger so that the gears don't slip.
I made a much better gearbox (which I did make plans for) here: czcams.com/video/CBBlflmi41U/video.html
If this doesn't need a clutch then this is an invention!
This would not work in a car because the momentum of the wheels will destroy the engine
@@menno763 I don't even think it would work in lego if there was an actual load on the output axle. Like attach this to a big lego car and see how it handles shifting gears while moving.
The only reason it can shift smoothly without any stutters or loud cracking noises is because the output of the gearbox has literally zero load on it.
wow very cool, Lego Technic is just great
Amazing!
Technically it's a 3 speed with reverse not a 4 speed... that aside only complaint I could make is maybe the motor changing between gears was geared down a little to much
This gearbox has two distinct outputs. The first output has three possible speeds, while the second output has one speed when engaged. Hence I have labelled it a four speed gearbox. This is not the same as, for example, a car gearbox that only has one output. The second output just happens to rotate in the opposite direction to the first output, but this could easily be changed with a few more gears if required. This is just a proof-of-concept, and many elements could be changed, including making the motor that changes the gears go faster.
Very clever.
So it has three forward speeds, one reverse gear?
Yes. It can also be reworked to have different combinations if that is what you are after.
Lego ASMR
Very cool
very nice
Great idea
Fantastisch!!!!
It's got it all
That's amazing
Best think i ever see
8 speed gearbox. That would be cool
Very nice.
I would love if there wasn't a high pitched tone in the background of the whole video
Thanks for the feedback.
This video was recorded about eight years ago with a simple point-n-shoot camera in a single take and uploaded directly to CZcams without any video/audio editing. Since this video has over 100,000 views, CZcams won't let me make any changes to the video/audio at all. In the last eight years I have upgraded my camera and now have a dedicated microphone and audio recorder, and I use Audacity to edit the audio of my videos now. I am still learning, but I hope that you'll agree that my more recent videos have much better quality than my earlier videos.
Sehr sehr cool
cyberdynesystem1O1 da stimm ich mit dir überein
Aber was ist der nutzen, kann mir das jemand sagen.
Great work my friend! Awesome desing. Although i dont see that being very sturdy :( an xl motor will probably mess those gears up if you hold the output in place.
Cool video. I wonder if somebody could make a lego car with a working lego engine, gearbox etc. That would be pretty cool.
Don't wonder, DIY!
Quick tip. Download Audacity. Take the audio track from your recording. Add a low pass filter to get rid of that high pitched tone in the background. Profit. I'd say set the filter to about 16kHz, just as a guess.
Thanks for the tip. This video was recorded about seven years ago with a simple point-n-shoot camera in a single take and uploaded directly to CZcams without any video/audio editing. Since this video has over 100,000 views, CZcams won't let me make any changes to the video/audio at all. In the last seven years I have upgraded my camera and now have a dedicated microphone and audio recorder, and I do use Audacity to edit the audio of my videos now. I am still learning, but I hope that you'll agree that my more recent videos are much better quality than my earlier videos.
S. L. Froden
Guess I should have looked at the date huh.
Seems, Lego never gets old, huh? ;) My brother and me constructed similar things w/ Lego more than 30 years ago!
Awesome
Great work! one of the best lego gearboxes, but i think you have to choose an other gear ratio: it has to shift faster;-)
I don't think the second output was planned...
+Dániel Bukovics - Why don't you think the second output was planned?
The second output is reverse
So simple. So genial. 👍
bellissimo!
3g tronic ? 👏👏👏
Genius
GOOD
You should make a huge flywheel for it
Hope it works on a bigger rc rally car
Genius, I'm gonna make bigger version of this gearbox (5+R) and will put it in my Cromwell tank.
Christian malik høj ignatiussen i wanna see ur tank
imagine if your car's gearbox was so slow that the wheels stop turning in between gear shifts
+Wedgie Man - Why would you want that? You wouldn't be able to use any gear except first gear, and maybe second gear.
Actually, real gearboxes stop delievering power to wheels in order to switch gear ratios.
@@demid6532 - Actually, in a manual transmission car, it is the clutch that stops delivering power to the wheels. The engine is still delivering power to the gearbox to aid in the synchronisation of the different gear ratios to make the changing of gears easier.
I know in the description you say: NO BUILDING INSTRUCTIONS... so could you please do for me the instructions :D
(Pls) thank you!
Nice
omg 10 years
Cool!
i dont understand it 100% but u get a like from me.
Thanks. If you have any questions that I can answer, just let me know.
Bastante ilustrativo
well is that the cool Bugatti Chiron gearbox where all were speakimg about ? 😂😂
Umm, no. :-P
No no no
Interesting construction, nut what will happens if handle will stay "between" gears?
When the gear selector is between gears the output axles will not be coupled with the input. This is like being in 'neutral' in a car gearbox.
So beatifull
genial!
0:43 I thought that engine sound came from that gearbox.
Haha, no, I was living on a busy street when I made this video.
Nice video zindabad will come
So I'm guessing the second output is for 4low gear?
The second output is for PTO (power take-off) to power a winch or other mechanism.
I like your idea of sliding gears instead of using the LEGO transmission piece. But the design would be hard to motorize.
Cool, but isn't this actually 3 speed gearbox with 2 output?
+Donald1982 - Thanks.
There are 4 distinct gear radios (4 speeds), and there are 2 output axles. I have listed the different gear radios in the video description.
Maybe it would be better to describe this gearbox as "3+1 Speeds, 2 Outputs"?
Yes, I said it a bit wrong. 3+1 speeds with 2 outputs is more accurate :)
with real pto's you can still move while the pto is running.
Deberías subir un poco la velocidad del cambio poniendo un engranaje un poco más pequeño para que no se note el cambio de marcha
Good idea