RX 24F

[JavaRN]

I am planning on building a humanoid robot with some good processing power for general algorithm execution, from what I calculated it will be close to 3.5Kg-4Kg. Will RX24F stand this weight.

I am currently working with ax-12 with my robaldo - he is 2.1 kg and can walk and move reasonably fast, but I don't think the ax-12 will stand such weight. So I wanted to go for something stronger and not extremely expensive.

What do you think?

[billyzelsnack]

That is a nice servo spec wise. Seems like if you geared it down by a factor of two you'd have a servo nearly as torquey and just as speedy as a RX-64, but half the weight and half the price.

[Tyberius]

I actually have some hands on experience with exactly this.

3.5-4kg is almost twice as heavy as an RX-24F bot should be, they're pretty much a lightweight (<2kg) humanoid servo.

I built a PLM (parallel leg mechanism) based humanoid using RX-24s, which effectively doubles the number of servos per joint, and they overheated constantly in the knees and did not have the torque to move the hip-roll joints well. Upgrading to RX-28s was sufficient, the RX-24F lose their speed very quickly when under heavy load.

I used the RX-24s from that project to make a lightweight humanoid (1.9kg) and am thoroughly impressed with its performance. Similarly, UncleBob created an RX-24F based humanoid that is heavier than mine (only slightly, I think 2.2kg?) and he has been having overheating issues in the knee, which further confirms that I believe these should only be used in lightweight humanoids.

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[billyzelsnack]

There you go again Andrew.. Bursting my theoretical vs real world bubble.