Servo gets warm...

[Gamerwillz]

Hello, my dad have been playing his new HPI Cyber 10B around Batley track today, and at the end we noticed that the steering servo is a little warm. He thinks it's not normal for it to be like that because it seemed it worked too hard to move the wheels for some reason. So is that okay to be warm?

Maybe he screwed something up too tight around the servo system...

[bigred5765]

ares gets a little warm, just make sure its not stalling out at the end points of the steering to much as that will eventually burn it out,

[sparrow.2]

Running extreme amounts of expo can lead excessive heat too.

[AlisdairO]

If you're using 2.4GHz stuff on an analogue servo you can damage it - it'll try to change too fast. I know that Futabas will let you change to PPM mode which is suitable for analogue servos.

[Bravo]

Analogue servo's ??????
This is the servo which came with the Acoms 2.4Ghz pack. Don't know what PPM means ? But if it came with the Acoms box, it must be compatible. I think maybe I tightened steering arms too tight ?

[Bravo]

My prob came to light when steering. When I have turned right, the steering goes back to dead straight. When I have turned left, the steering continues to go a bit left. Makes controlling the car at high speeds impossible. Doesn't go back to dead straight having turned left. Most annoying.

[Bravo]

To sparrow.2. Don't what extreme amounts of expo means either. It is true that I can turn the front wheels a lot. Car has v small turning circle.

[Marvin]

EPA (end point adjustment) is used to limit a servo's overall travel. Allowing the servo to attempt to pull more than is necessary can damage the servo. You should set the end-points (which should be on your Acoms 2.4gHz radio) so that the servo moves just enough each way to get full lock.

Expo (Exponential) is used to change the feel of a servo's travel.

Imagine that the green line is where your wheel is. When it moves left, where it crosses one of the curves, is where the servo travels to. Linear means that what you put in is what you get out, whilst the curve (in this case) gives you more travel at first, then less later on for a given movement of the wheel. The Acoms you have doesn't allow for exponential adjustment, so it'll just be the linear option.

I think the problem you just mentioned is that the servo is quite weak, and won't allow for full movement under load. A better servo is something that is often overlooked, but is invaluable as you'll have better, faster control over the car's movement.