Servo-savers are "weak points" by definition. They actuate to relieve the stress of sharp impacts. They just do it gracefully so they can spring back to their original position over and over.
Companies will make whatever people will buy. Case in point: RB Innovations Nitro Superchargers. Racers might not fall for that particular gimmick, but they still love voodoo, and stiffness is their favorite kind of voodoo. So there are any number of RC companies, even respectable ones, that make aluminum upgrades that serve no useful purpose. Since cam-style servo-savers are complex assemblies, certain parts can benefit from being made of metal, but other parts don't. The cam assembly in particular benefits from being made from dissimilar materials.
All the information I can find about the RC8T's servo saver suggests that the bellcrank parts are all plastic, and they pivot on aluminum posts. Plastic cams rubbing together will not have the same problems as aluminum cams rubbing together. However, if you have an all-aluminum one that I haven't been able to find, set it such that it can actually do its job instead of being "basically locked", run it for a few months, then take it apart and examine its condition. You'll almost certainly find the surfaces of the cams are scraped and gouged, and the actuation is rough and inconsistent.
(Last edited by fyrstormer : 3.22.17 at 8:15 pm)
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