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Unread 27-01-2014, 18:47
Andrew Schreiber Andrew Schreiber is offline
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Re: Shifting with servos

Quote:
Originally Posted by MichaelBick View Post
Some teams don't like using pneumatics because of the weight. If you are just running shifters than it may not be worth it.

67 has been one of these teams in the past. They have used the window motors instead of servos to successfully shift. You cannot shift on the fly, but it can also be lighter than a pneumatics system.

Or because they haven't got anyone with experience using them. 67 has not used pneumatics since 2004 from what my brother was saying.

Bear in mind that when you are disengaging the dog gear you are fighting friction. If you don't have something else taking the load from the winch you will be fighting a LOT of friction. You can overcome it but chances are it won't be easy. A simpler solution might be to use a ratchet style system that takes the load. You'd need to figure out the math behind your particular system to tell if a servo or a motor with a cam could achieve the desired results.
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