Quote:
Originally Posted by john333
my mate just bought an Alturn-usa servo for £18 new and it seems brilliant for the money......metal gears, ball races, 11kg torque and 0.12 speed
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Those are the things that every servo manufacturer can tell you, but they are the last things you need to know to judge quality. What they can't tell you is the accuracy with which they read the signal, the resolution (ability to go exactly where you tell it time after time) and the holding power when stationary. Hitec and other makes generally get the thumbs down from RC racers as they are not up to the demands of an RC car, usually failing to position well, hold well, or to centre correctly.
You are better off with one of the makes we all use because we have been there and come back again! Many are available second hand on this forum, and that is a better bet. It is testament to the quality and reliability of the major makes that they often sell on here for more than a new Hitec!
Quote:
Originally Posted by growler
What is the advantage of digital?
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Digital servos usually have a bit more power for the same current draw, are a tad more accurate and have a higher holding power - the ability to hold the desired position against the forces from the steered wheels - see above.
These days, some radio systems (the good ones like Sanwa and Futaba 2.4Ghz systems) will only work with a digital servo. That allows you the best response, and today it is better than it has ever been if you use these two systems. HTH
