2 table to the challenge By Tomek F. on 19 Dec 23:25

Great idea!

thanks Flaviano -need to further refine a little bit

Hej,
Jezeli przejrzysz pozostale wpisy do konkursu to tam gdzies jest link do filmiku bodajze z tego typu mechanizmem :)
Pozdrawiam

Very interesting. My gut instinct tells me the gear at each leg needs to have a larger diameter to create proper leverage to lift the table up, especially if it is loaded with 500kg. What locks table Z value position in place? The exposed chain needs to be fixed. Very ingenious and creative. Good luck!

Greg you are right
as I wrote in the description of the model chain guard is needed (this is not a problem)
same capacity as such is safe - it is the four screws with trapezoidal thread 24 (rectangular), a fairly massive profile-only depending on the material profile, you can think of a nut instead of threading in the profile
perhaps you need some ratchet in the chain (protection against self-displacement)
thanks for your comments

Nice design. I do not think there is any problem with the ratio. Screws will have high ratio, even with small sprocket. Also I think this will lock very well and not backdrive.

The only issue I see is that chains have low tolerance for sideways movement. This design with the chain laying sideways will need chain support all along the chain. Maybe have a guard that is also a chain guide, some kind of nylon or durable plastic.

The best thing about this design is the stability, 4 corners spread out has to be the most stable.

Congrats on your win!!!!

Congratulations Tomek for winning the 2st place!

As I already said, great idea, congratulations!

Congratulations

Congrat'z Tomek
:)

Congratilation Tomek!!

Congratulations ......:):):)

Hello all.
I thank the jury for appreciating my model and I thank everyone for their congratulations,
and I congratulate the other winners.
I congratulate all participants for ideas and commitment.
Thank you and best regards.

Congratulations Tomek

It's possible to lift 500kg with 15mm/s ?

Congratulation

Congratulations

Congratulations

Again, thank you all for your congratulations
cordially greet all

Congratulations :)

congratulations i think that idea must have the first place.very smart

Thank Basilis but without exaggeration so rated the jury in which were representatives of the company SOVELLA They have some guidelines and know what is good for them just remember that this type of challenge is not a beauty contest (Miss World)

Congratulations. Nice, Simple and cheap construction. To build this table enough only one old bicycle :)

thanks frei, one a bike is probably will be little :)

unless the tandem:):):):)