Spin an object on the Y axis in Unity3D.

SpinOnY.cs

using UnityEngine;

// @kurtdekker
// Place on a GameObject, set the desired rate of spin

public class SpinOnY : MonoBehaviour
{
	[Header( "Degrees per second.")]
	public float RateOfRotation = 200.0f;

	float age;
	
	void Update ()
	{
		age += Time.deltaTime;
		transform.localRotation = Quaternion.Euler( 0, age * RateOfRotation, 0);
	}
}