How to make a fast spider robot?

Hi, I made a robot spider. Here is the video below. But it's slow, like on video. What did I do wrong, to make it move faster?

https://www.youtube.com/watch?v=6gfDY8Rr570

Nothing Wrong

We see that you are only using one 3.7V 18650 battery? Normally servos are meant to operate at 4.8V to 6V. Using a 6V battery pack will creately increse the speed. Using two 18650 batteries might burn the servos, so you would need a good voltage regulator to drop the voltage down to 6V.

One 18650 driving 18

One 18650 driving 18 servos?!.

Wow!. I didn’t know that batteries can resist such load!.

I worried too much in my project…

Congratulations for the project!. And sorry for my English!.