Question Going to buy motors (finally). Which one? Worm motor or Electric jack

Hello

Again with this question in my head. At searching so many electric jack (thanks @mariano68) and worm motors in the last time on ebay and alibaba respectly im gonna do the step of buying the motors and make them work before doing the structure, it will 100% sure that will be only the chair movement and not the whole platform

The worm motor that i'm going to buy are from here http://dakemotor.en.alibaba.com/pro...2V24V_250W_worm_small_gear_reducer_motor.html and after so many conversaton with @Jun, @noorbeast and looking a lot of threads in xsimulator and videos in Youtube, I'll buy 2x 12V 300W Worm motor 30:1 gearbox with 250 of torque and 100 rpm. I'm plans to make this playable not only for me (i have friends that are a bit heavy) so i need to be sure if those specs are perfect, if not, i'm asking if it's a good idea to go get sure at once and buy the motor with the biggest torque and lowest rpm

On the other hand i can afford 2 electric jack kits, but some friend told me that those motors are not self-lockable like some worm motors. I dont have to worry about that if a heavy person will play on my sim? Talking with mariano i dont have to worry about 'how much weight can handle' if the jack itself can handle 2 tons of weight, but for me i need to get sure before buying, because i can't afford so much right now. I mean, i have the money but for now i cannot make mistakes and waste it buying the wrong motor

hello try https://simukit.com/
reecomendet 24 v 350w motor

I'm going to use Monster Moto shields, those motors will not work at 12V

Also, a question if you can answer: There is a problem is i use motors with low rpm? (i've watch videos with high rpm and others with low, and i'm trying to see any difference between)

High or low RPM motor's are dependent on the gear box being used.

I've saw a motor on alibaba, 12V 300W 50:1 400 torque 60 rpm. I know that the motor will be slow but it can handle more weight. A friend of mine told me about that motor with a large arm it can be fast as a low gear box with a short arm. But what about the weight handling? There's a formula to know if how much weight can handle a ceratin motor?

Maybe it's better to buy and modify 2 electric jack, but i prefer a better opinion

Yes there is a formula and it is posted on the FAQ if I remember correctly, anyway, the longer the arm, the more torque you need to move it.
If I remember correctly, my jacks were less than 50rpm and worked great with an arm 45mm long.
I don't remember what kind of sim are you building, but for any kind of 2dof the jacks or the 300 watts 50:1 will work fine (better the 300 watts 50:1 ones obviously)

Thanks @noorbeast i've downloaded the software and i'm going to do some test. But, it's necessary to rotate the motor? I mean, doens't need to be parallel to the ground?

I've contact with the supplier (I lie about the purpose of the motors, i've told him that i need for some lifting machine project) and he told me "500w with 50:1 reduction ratio, it will be more powerful than 300w 30:1", but i need to go with a 300W 12v because of the current per Monster Moto, so i can get sure that the 300W 12V 50:1 gear ratio will have enough power to lift a chair with a heavy person sit on it, but i'm still looking to the best option, like this:

http://www.alibaba.com/product-detail/12V-electric-car-jack-and-wrench_1572578938.html
https://wholesaler.alibaba.com/product-detail/portable-2tons-12v-electric-car-jack_60236229025.html
https://www.alibaba.com/product-detail/China-12V-Electric-Screw-Lift-Jack_60575210683.html (here especify the electric jack will work at 120W but doing some math: 12V x 15A = 180W!!! *seems suspicious*)

IDK the magic the electronic about an electric jack that has low watts compared to the gear motor that i'm looking and still can have so much torque

Edit: To be clear, i'm in plans to build a sim with only the chair movement

Hello again

Talking with a friend he also investigated about the gearbox in the worm motor.I'm in doubt about the location of the motor depending of his gearbox. If it's 25:1 it's must be behind the chair, and if it's 50:1 it must be in front because of it's torque it can move the entire platform but if it's located on behind the torque can move with more degrees the chair, making some unreal motion

In my sim i want to handle the most weight as possible with no problem in the motiom itself. So i'm asking, there's a problem to use the 50:1 sim only to move the chair? Keep in mind that also i'm looking for electric jack in replacement of the worm motor if i cant afford from alibaba

PS: In a future maybe i want to upgrade the sim to hook a traction loss, maybe a 50:1 motor like the previous one will do the job, but for now i want to finish one of for all my 2dof sim

Thanks again @noorbeast, i'll try to understand the software to fit into my requirements

A friend comes with this motor, 12v 180W 60rpm 0.5A for 'warm' motor for oil extraction. Will do the job?

https://www.alibaba.com/product-detail/12v-180w-60RPM-DC-Warm-Gear_60246052967.html