How do you mount the other side of the servo?

[skarim]

Okay Ill say this now, this is not for any bipeds OR parts sold from lynxmotion at all. This is a general question for all standard servos.

As far as the horn, you screw that onto the thing you’re going to “actuate”. However, the side OPPOSITE the one of the horn (the back of the servo), is perfectly flat, with sometimes 4 screws you can open to look at the built in chip. How do you mount this side to keep the servo body locked, and only allow the horn to spin W/O buying brackets? Say Im using plastic or metal to make my frame.

Any clever ideas? Glue might work…but its a bit messy. How do the guys at ROBO1 do it?

[eddieb]

@S. Karim

Okay Ill say this now, this is not for any bipeds OR parts sold from lynxmotion at all. This is a general question for all standard servos.

As far as the horn, you screw that onto the thing you’re going to “actuate”. However, the side OPPOSITE the one of the horn (the back of the servo), is perfectly flat, with sometimes 4 screws you can open to look at the built in chip. How do you mount this side to keep the servo body locked, and only allow the horn to spin W/O buying brackets? Say Im using plastic or metal to make my frame.

Any clever ideas? Glue might work…but its a bit messy. How do the guys at ROBO1 do it?

Well mostly the reason the bottom of a servo is flat without any features to attach to is because they are not designed to be mounted from the bottom. There are a few specialty servos that differ in this regard but they are rare and cost money. In practice servos can and do get destroyed, either by stripping gears or buring up motors or the electronics. Generally speaking mounting is what the two to four mounting holes on the bracket looking protrusions just below the top surface of the servo are used for. The easiest solution is to use a bracket of some sort, whether it is a purchased one with precise mechanical dimensions, or a sheet of plywood or plastic with the servo mounting pattern cut from it. If you start gluing your servos to your assemblies you might want to make sure you have extra parts to replace those surfaces with when the servo dies.

[skarim]

good post, i guess fabricating a custom cage for a servo with holes to drill screws in sounds good, since i cant purchase brackets

[adam-21]

@S. Karim

Okay Ill say this now, this is not for any bipeds OR parts sold from lynxmotion at all. This is a general question for all standard servos.

As far as the horn, you screw that onto the thing you’re going to “actuate”. However, the side OPPOSITE the one of the horn (the back of the servo), is perfectly flat, with sometimes 4 screws you can open to look at the built in chip. How do you mount this side to keep the servo body locked, and only allow the horn to spin W/O buying brackets? Say Im using plastic or metal to make my frame.

Any clever ideas? Glue might work…but its a bit messy. How do the guys at ROBO1 do it?

Many robotics-specific servos, such as this HSR-5990TG, have a spline on the bottom as well. There are other examples from Hitec, Futaba, Kondo and others.

If you want to use more afforable standard servos, then you should check out these molded servo hinges that Lynxmotion sells. They even work with these ball bearings for a smooth pivot. Very cool product.

I’m going to use these in my hexapod with 18 HS-645MG servos. I’m planning to use black servo tape rather than the white double-sided tape it comes with. I’ve used servo tape for a long time, and it’s very strong and durable.