Not a bug. All gear cycle at the same rate, and work immediately. It's a wish list item.
OT sort of, but please tac on that post-it seperate noises/sounds-files for gear up, gear down, gear damage, and gear wind por favor. HTC's doesn't have to utilise them but the custom sounds folks might have a lot of interest.
IE: P-51 Most gear retracts you cant hear over the sound of the engine haulin arse except for the pop, which you really feel more than hear, of them engaging the arresting lock/hook inside the wells. When dropped that same spring loaded hook makes and aweful sharp twang/pop when it releases and the gear litteraly drops out for the first part of its downward swing before the hydrolic actuators pick up the slack. Those noises are the loudest mechanical noise of the swings with the gear. The engine seriously dwarfs and drowns out any slight hydrolic noise you might hear or even feel. By far, the single noisiest thing with dropping the gear is the wind noise changes dramaticly, you can hear (and feel) it buffeting agaisnt the gears and the flaps being dropped. This wind isn't as sharp as that wind tone you get from going super fast, it's different, more baritone and reflects the fact you're now generating drag while sailing through the sky.
I think adding a couple extra noise files/ques would greatly increase the immersion, especialy if some gear/flap/drag winds could be added.