Chain driver motor - Lifting a bar

[goldorak75]

I have attached a photo of my project.
The goal is to raise a board from flat to vertical.

In my drawing, I have put a “bar” as the object that need to be lift but on the bar, their will be a wood board.
I already have the electronic setup to send 12v to the motor in either direction as needed.
I know that weight of the board would be around 10 pounds and it need to raise pretty fast, no more than 1 sec, 1 sec and half.
I have looked for days for 12v DC motor that could accomplish the task and understand the principal about motor arm radius and weigh ratio but should
I considered anything about “angled” gravity since the board is lifted from 0 degre to 90 degres?

What about the distance from the motor shaft and bar gear? Does the length affect the torque/power? The chain length could be set to any length for this project as I have all the space that I need.

Which motor would you recommend for this project?

[dialfonzo]

If you are using a 1:1 ratio between the motor and the bar, that would have almost no effect on torque.
To achieve the speed, you will need a very fast motor and very accurate positioning, do you have any background in programming ?

If withing the current of your motor, a product like the Pololu Jrk (3A or 12A) might be an option.
Using it you can create a “R/C” servo out of you motor and a potentiometer. The Jrk will drive the motor based on the potentiometer you will install on the Bar axis for positioning.