What are the advantages to the "cam type" over the stock? I have a x4.6, and the stock is 85058/105894. I've had to rebuild it a few times...so if there is an upgrade would love to hear about it.
Thanks
(Copied from another user) "Here is my comparison and mini-review of the new HPI servo saver.
I just recently replaced my Ofna MP servo saver with the new cam type servo saver from HPI. The HPI unit fits perfectly onto the Savage and allows the full steering movement without any modifications. The kit includes three strong plastic servo arms that will fit all of the major brands of servos. Also included are two new steel ball inserts for the short link between the servo arm and the steering upright.
I noticed that the spring that puts pressure on the cam servo saver is not as strong as the Ofna MP unit that I removed. This was confirmed after everything was re-assembled, my
Hitec 645MG could no longer turn the front wheels lock-to-lock while the truck was sitting stationary on the ground due to the weak HPI spring. While driving the truck around, the steering did not feel as crisp and precise as with the Ofna one installed. I tried adjusting the servo saver pressure by tightening the threaded collar; however, you cannot tighten it very much because the spring will bind and you essentially loose any servo saver action at that point.
So, the solution was to replace the stock HPI spring with the one from the Ofna servo saver, as the Ofna spring is heavier gauge wire. This really stiffened-up the steering quite a bit. Now, it feels much like it did when I had the Ofna MP parts installed, but with one big plus. The cam action of the HPI servo saver is smoother than with the Ofna MP one.
I would definitely recommend this hop-up to anyone who is still using the old-style HPI servo saver. I think the stock HPI spring is soft enough to use even with the plastic gear SF-2 servo.
I would also recommend this as a modest upgrade to the Ofna MP servo saver if you install it using the Ofna spring instead of the HPI spring. "
And I'd like to know if this is normal/needs more tightening
[ame="http://www.youtube.com/watch?v=CjW149pVBeI"]Is this normal? - YouTube[/ame]