Quote:
Originally Posted by nativepaul
It looks like I have a different opinion or maybe just a different viewpoint to the rest of you, in general I would say, yes, there are differences in servos between the R/C disciplines. Cars need an unusual combination of high torque and high speed that requires good motors and ESCs inside them and that makes them expensive, but most air disciplines don't require as much speed (helicopter tails being a notable exception) most of my boats and planes have servos about .15-.22 second travel to maximise torque for the size and weight of the servo, and fly well with that even 3D funfliers, but my cars are around .1 second with as much or more torque but weigh and cost a lot more I usually spend as much for the one servo in a car as I do for all 4 servos in a plane. I love the Ace 1015s in my 1/8th cars, but if someone gave me a bunch free and paid me £10 each to fit them in my models I wouldn't fit any to my planes and only 1 of my boats would get one as they're too heavy and would just blunt performance with the servo speed being of no benefit, if I had any huge planes sure a few would go in there, but on my own dollar I'd buy something slower, lighter and cheaper, for the same torque.
All servos with a few exceptions operate on the same principals and you CAN run a car one in a plane (with a weight penalty), or run a plane one in a car (but you may find you need to get that opposite lock on quicker if your tail happy like me), those exceptions are; retract servos (very low geared for immense torque but very low speed and unusual 180degree rotation lock to lock rather than the normal 120), sail arm servos (low geared for massive torque to move and hold a full sail on the end of an arm several inches long but very low speed), sail winch servos (often regular speed and torque but instead of 120degrees of rotation they have continuous rotation to winch in a sail sheet)
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Yes but what you are describing is obviously determined by the specs themselves on what particular servo you purchase. Of course if you purchase a servo with slower speed, or lower torque for a 1/8th scale truck then it will not cope in your setup. This is an obvious mater of doing proper research and picking the correct servo for your application.
The discussion here is in regards to two identical servos with the exact same specs (speed, metal gears, bearings, high torque, & size) but labled to be specific to boats, planes, or vehicles. The question that was posted is whether there really is any internal differences between these two servos even though they may be labled for boats, planes, or cars, and not all or a combination of them. Unless we get an answer from someone who actually works in the manufacturing of, or works on the internals for warranty repair then we have to assume that they are identical in all aspects. I mean does anyone out there have two servos (one for cars & one for planes) in hand that have identical specs that can open both of them and post up pics for us to anylize? If the gearing is the same, and the motors used are the same, then they must be the same. Then the car/plane labling are nothing more than stocking guidance to keep stocks in balance. Wouldn't you agree?