rodor Posted April 10, 2015 Posted April 10, 2015 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! Quote
Rum Posted April 10, 2015 Posted April 10, 2015 Why you do not use the new large pneumatic actuators? You have to wait 3 months, but they are awesome! :D Quote
rodor Posted April 10, 2015 Author Posted April 10, 2015 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. Quote
Rum Posted April 10, 2015 Posted April 10, 2015 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 Quote
rodor Posted April 10, 2015 Author Posted April 10, 2015 Thanks Rum & Zblj replies. From the video, a LA can give out about 3.5kg with a XL motor driven. Quote
Kiwi_Builder Posted April 10, 2015 Posted April 10, 2015 The test was done with an M motor, not an XL. An XL motor would probably give closer to 4kg. Quote
rodor Posted April 10, 2015 Author Posted April 10, 2015 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 ? Quote
Captainowie Posted April 10, 2015 Posted April 10, 2015 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. Quote
Milan Posted April 10, 2015 Posted April 10, 2015 There is also important question what version of the big Linear Actuators you are going to use. V1 or V2 Quote
rodor Posted April 11, 2015 Author Posted April 11, 2015 Thank you for all information. Hi Milan How to identify the version of LA ? Quote
Milan Posted April 11, 2015 Posted April 11, 2015 (edited) 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, 2015 by Milan Quote
MajklSpajkl Posted April 11, 2015 Posted April 11, 2015 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. Quote
__________________________ Posted April 12, 2015 Posted April 12, 2015 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. Quote
rodor Posted April 13, 2015 Author Posted April 13, 2015 Thank you for your very important information. For my MOC truck mounted crane, I will share it in a new post later this week. Quote
Phoxtane Posted April 13, 2015 Posted April 13, 2015 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! Quote
bonox Posted April 14, 2015 Posted April 14, 2015 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. Quote
Lipko Posted April 14, 2015 Posted April 14, 2015 Wow, maybe that's the reason (old design) I my LAs struggling with lifting a simple boom. Quote
Kman860 Posted October 10, 2015 Posted October 10, 2015 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: Quote
nerdsforprez Posted October 10, 2015 Posted October 10, 2015 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. Quote
neonic Posted November 7, 2015 Posted November 7, 2015 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. Quote
GoldVillage Posted November 7, 2015 Posted November 7, 2015 In a comparison, will the white clutch gear be able to handle more or less torque than a LA? Quote
SevenStuds Posted November 7, 2015 Posted November 7, 2015 (edited) 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, 2015 by SevenStuds Quote
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