Alan King writes:
The FAA defines tolerances that a sim builder needs to meet in order to be certified. Control forces are something they definitely pay attention to. Rudder force for some manuever might need to be within 5 lbs of the real thing for instance. But if it takes 4 lbs of force in the real airplane, that leaves you a bit of latitude.
Well I wasn't really going for certification on my $30 homebuilt rudder and $30 yoke, although if there are specs and since I do motor controllers it might be worth looking at at a later date.
But 5 lbs on the rudder when your leg weighs 30 lbs isn't nearly the same feeling as that same 5 lbs on the rudder when your leg weighs -30 lbs, and I'm not aware of too many sims that go inverted to do negative G's, though there are no doubt a few for military at least. But they're still useful even without doing everything perfectly. And a simple spring will still be useful, even if it has a few more trade offs and is less accurate a simulation than a motor system for more correct force, it's still much better than nothing, and has a significant chunk of the usefulness of a more complex system without the extra cost..
Time to go do the linkage, even without the pedals already feel pretty good.
Alan
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