Hello Everybody!

I have a technical question about the large actuator.

I am making a truck mount crane.

And will use 2 large linear actuator to lift the main arm up.

I want to know:

1) the maximum lifting force of the actuator

2) the maximum input torque of the actuator

Could anyone can help on this ?

Many Thanks!

Why you do not use the new large pneumatic actuators? You have to wait 3 months, but they are awesome! :D

Because the design of the crane is on a 360 degree turntable (unlimited turns).

All power functions are at the bottom side of the turntable.

And I have no pneumatic functions parts. hehe.

Hmmm. The unlimited turntable makes pneumatics impossible... I do not know anything about the actuators, because I love pneumatics more, so I build everything with pneumatic.

Rum

Here you go:

Thanks Rum & Zblj replies.

From the video, a LA can give out about 3.5kg with a XL motor driven.

The test was done with an M motor, not an XL. An XL motor would probably give closer to 4kg.

If I use a gear set to increase the torque to double XL motor's torque, will damage the large LA ?

Or what is the maximum acceptable input torque of large LA ?

The actuator has an internal clutch that will engage if there's too much torque applied - you won't damage the LA. I don't know what that limit is though. You could find out by trying to drive the actuator past its maximum range of travel.

This sounds like a fun experiment!

There is also important question what version of the big Linear Actuators you are going to use. V1 or V2

Thank you for all information.

Hi Milan

How to identify the version of LA ?

It would take too much writing, and no one could do better job describing it than TechnicBricks blog, so just click here!

Edited April 11, 20159 yr by Milan

Hi, I got a nice picture that ilustrates the week and the strong actuators well...

As the link that Milan suggested says, you should check the serial number of the LA, which is next to the axle hole.

Hi, I got a nice picture that ilustrates the week and the strong actuators well...

As the link that Milan suggested says, you should check the serial number of the LA, which is next to the axle hole.

The new LA can hold 700,000 newtons- enough to lift my house.

Thank you for your very important information.

For my MOC truck mounted crane, I will share it in a new post later this week.

The new LA can hold 700,000 newtons- enough to lift my house.

Is that static force, or lifting force? I'm not entirely sure that one LA can hold 71,400 kilograms, let alone lift it!

If you are willing to pull the LA apart and glue the clutch together (the white input shaft to the orange centre) then you can at least double its capacity straight up.

Wow, maybe that's the reason (old design) I my LAs struggling with lifting a simple boom.

Hi, I got a nice picture that ilustrates the week and the strong actuators well...

As the link that Milan suggested says, you should check the serial number of the LA, which is next to the axle hole.

:laugh: :laugh:

While this video incorrectly shows how a crane lifts its load, it does demonstrate that the LA can actually lift the 8070 supercar. They are pretty strong.

Zbij, I like your little movie.I was looking for some actuators, maybe for my moc, and I was wondering how much they could 'push'

Rodor, good luck with your build.

In a comparison, will the white clutch gear be able to handle more or less torque than a LA?

While this video incorrectly shows how a crane lifts its load, it does demonstrate that the LA can actually lift the 8070 supercar. They are pretty strong.

This is off topic to rodor's tech question, but did you see the angry comments for that video? Can't believe that when Nathan Thom, the creator of Rebrickable, wants to do a crane review to see if it actually lifts anything, people explode in fury. What would people say if it was reviewed on "will it blend"?

Edited November 7, 20159 yr by SevenStuds