Відео

I'm sorry, I made this gearbox about 12 years ago, and I no longer have it put together. If you analyse the video closely, you should be able to see enough information to recreate it yourself. However, I consider this gearbox a failure - when the output is under load, the gears start to grind. You might want to check out this other gearbox that I made: ua-cam.com/video/CBBlflmi41U/v-deo.html

Interesting. I've always found that most bricks sink in water, however if any air bubbles get caught in the bricks, that is enough to make them float.

I did create an LDraw file for this GBC module which you can download here: www.brickshelf.com/gallery/slfroden/GBC-To-and-Fro/to-and-fro-gbc-module.mpd This file isn't really building instructions per-se, but it is what I use to rebuild this GBC module and it may help you out. The following forum thread also has information about both the GBC module and the Automatic Motor Shutoff mechanism: www.eurobricks.com/forum/index.php?/forums/topic/143679-gbc-to-and-fro/ I hope that helps.

At the upper left is the IR receiver, which is controlled by an IR controller/transmitter. I can't remember which one I used, but I think I used the Train IR Controller which lets you control the speed of the motors. The motor in the middle is on all of the time, but as the worm gear goes up it has to struggle against gravity a little bit. The worm gear then turns another gear which is linked to the base which makes it go up half of the time, and down half of the time. The linkage stops the worm gear from sliding off the end of the axle. It looks like it pauses at each end, but that is just because of the rotary-to-linear motion (sin wave). I only turn the motor at the lower left on after a few seconds, and that is so the whole mechanism can rotate so you can get a good look at the mechanism for all sides.

I understand what you are saying, and it is true that the seal around the piston is designed to leak air when the cylinder is over-pressurised, however in this case there was a crack in the plastic which was leaking air. Check out my follow-up video here: ua-cam.com/video/8kG3p7VVhjY/v-deo.html

Unfortunately I don't have any detailed instructions or tutorial on how to make this model. If you have any specific questions I might be able to help, but I made this model several years ago so I don't remember most of the details.

This gearbox can be extended to have more gears, but there is a little bit of play in the mechanism which causes the gears to jump and grind when the outputs are under load. Have you seen my other gearbox which is a better design and can have more gears? ua-cam.com/video/zW07yvEafl4/v-deo.html

Unfortunately I don't have any detailed instructions or tutorial on how to make this model. If you have any specific questions I might be able to help, but I made this model over 7 years ago so I don't remember most of the details.

OK…Thanks

Thank you for the suggestion. Please watch my follow-up video to see the solution that I implemented. ua-cam.com/video/8kG3p7VVhjY/v-deo.html

Yeah, a similar principle, just with a slightly different implementation.

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@@nadyaospennikova5845 I don't speak Russian, sorry.

@@kb.bit1 i doubt they speak english

@@CaptnCrnch alr

No, I never said that "4-1 is 5". In the video @ 1:12, I start with an example of subtraction being: 5 - 4 = 1. Subtraction is just the reverse of addition, and this device is perfectly capable of doing both, within the given range of numbers. Keep in mind that this is just a proof-of-concept, and if you made the gear racks longer and added more numbers to the scales you could perform a wider range of calculations. You could also extend the scales to include negative numbers, or change them from linear scales to logarithmic scales to perform other types of calculations.

Thanks. The weight of used bricks would be interesting as there could be less weight due to scratches and dents, but more weight due to dirt and grime. Unfortunately I don't have enough transparent bricks or bricks in colours that have been retired to be able to do any meaningful tests or analysis. Another interesting test would be to see how the weight of a 2x4 brick has changed as the design of the brick has changed over the years.

Oh my~

The small wheels came in this set (42123). The medium wheels most recently came in the Dodge Charger set (42111) www.bricklink.com/catalogItemIn.asp?P=41897&in=A The large wheels originally came in the Batman Tumbler set (76023) www.bricklink.com/catalogItemIn.asp?P=18450&in=A

I don't have any detailed building instructions or tutorial for this mechanism, but if you have the required LEGO pieces and study the video closely you should be able to recreate it easily enough.

I didn't use a specific single LEGO set to make this. I used a variety of LEGO Technic pieces that I had. The main pieces that you will need to recreate this mechanism are the worm gear and the motor.

The first step was to extend the axles so that the wheels cleared the bodywork. Then I replaced the axles so that they had suspension springs. This isn't really an instructional video or a tutorial video, it is just trying to show how you can take an existing set and make some modifications to it, and maybe inspire you to do your own modifications to a set, or create you own models from scratch. Remember to have fun!

Yes, they are indeed from Firefly/Serenity.

@@slfroden That's so neat. I loved that show.

@@tentative_flora2690 Thanks. It is one of my favourite shows too!

Make your own ! 😁

Hmm, that's an interesting question. Perhaps the basics are knowing some math/s, and knowing something about LEGO pieces and techniques. What do you think the basics are?

The second output is for PTO (power take-off) to power a winch or other mechanism.