With the 'normal' servo savers, you basically have a spring inside. When a certain amount of force is applied, the spring compresses thus taking the shock off of your servo. The downside is as the spring gets older, it gets weaker. Once this happens, you get the "mushy" steering response that we all know and love.
With the proline steering kit, and any 1/8th style servo saver, the spring is holding two pieces together. These two pieces have a taper fit. On one side you connect the servo and on the other side is the steering linkage. Only if the force is great enough, will the spring have to compress. Even then, the spring will not have to compress very much at all, so you end up getting more life out of the spring.
To put it another way, with a standard servo saver, the spring has to hold and transfer all of the 'force' that your servo is generating. With the proline steering kit, this is not the case. The spring only has force on it when it is needed, not all of the time.
If I am not correct, somebody please correct me..
