Hello,
Have been working on my humanoid biped robot for a little over two years now. After playing around with several controllers, I’ve settle on one and went on to progam a ton of motions. Using MG995 for this prototype (they were extremly cheap and perfect, 24 for $5.00 each and only one was flawed) I am ready to upgrade the servos. I have found the hsr-5980SGs for a really good price and like the power, the weight of them is of no concern the power is. Has any one used this servo in a robot?
Thanks for any help.
Ken
5980SGs are equivalent to the 5990TGs except it’s steel gears and no heatsinking on the body.
At the level of price you are paying for the 5980SGs, I’d pay a little extra to get the 5990TGs instead…
I’ve used the HSR-5990TGs to upgrade the main joints in the arms of my J5 project. I would also recommend going with the 5990TGs unless the price difference is massive from the 5980SGs (normally its very little difference, but you may have found a better deal?) That said, they’re almost identical servos, so I could probably answer anything you’re curious about.
What exactly do you want to know?
A few things I’ll say right off the bat: They’re loud, they’re power hungry, and they are STRONG.
Watch your fingers 
I already took a chunk out of my finger when I was reassembling an elbow joint, my cat went running across my keyboard causing my robot to strike a pose.
Wrenching on a powered up bot! You have guts I’ll grant you that. lol 
There is a very fine line between guts and stupidity. Some might say no line at all.
Thanks guys.
I figured the difference was the heat sink and material of the gears. The only thing, I am worried about the heat sink. As for price I can get the 5990s for $112 per servo and the 5980s for $89, huge price difference of $124 and $109 for prices I have seen for these servos. Battery power was a worry as well, My robot has 21 servos. Not including the head I don’t need 333 to 417 of torque in the head.
Thanks again
Ken
Well, they do suck a lot of power, but you get a lot of torque in return.
Check out Matt Bauer’s Rook’s Pawn III humanoid robot, it uses all 5990TGs and he is able to power them well enough. I do believe he is using LiPos though, which I would recommend if you’re going humanoid with high power servos, you’d certainly have enough payload to carry a good sized pack.
Yeah I’ve seen Matt’s robot, it’s a nice bot, I’ve been watching him for a couple years once and talked with him once, good guy and an inspiration. as for the Lipo battery, Lipo is the way I am going, even with the exploding and burning down the neighborhood factor. But for the price I may just go with the 5980sg and hope for the best.
Yeah, $90 is pretty cheap for those. I’d say for the price difference its probably worth it, just watch their temps when running.
Yeah,
He’s not going to be running any marathons anytime soon. But I am curious to see how for I can push him until he borst into flames.
Ken
I already took a chunk out of my finger when I was reassembling an elbow joint, my cat went running across my keyboard causing my robot to strike a pose.