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what is in a servo?

Old 03-27-2004, 03:14 AM
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ponderosa
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Default what is in a servo?

What is in a standard $12 servo with about 45in-oz torque compared to a mini servo with about the same torque rating? Why shouldn't one always go with the smaller servo for the convenience and weight? Is it the size of the gear train?
Old 03-27-2004, 09:44 AM
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LesUyeda
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Default RE: what is in a servo?

The size of the gear train, and usually the smaller servos cost more.

Les
Old 03-28-2004, 09:48 AM
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JNorton
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Default RE: what is in a servo?

Servos should be selected for their usage. In a 40 size plane, the smaller gear train cannot physically absorb the shocks a standard servo can take and so is more delicate. The smaller servos are also more expensive. I use Hitec 425s or Futaba 3004s for my general use throw around use. These are both some tough servos.

However if you are using these in a small plane where weight is of concern then the smaller servos are excellent. It depands on the design and application, but for all around useage I'll take a standard ball bearing servo.

John
Old 03-29-2004, 01:29 AM
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bn120
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Default RE: what is in a servo?

I use the mini with metal gears they are so fast (hs-225mg)

Darin
Old 03-29-2004, 11:39 AM
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JNorton
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Default RE: what is in a servo?

bn120,
Do a search on HS-225MG and you'll find some guys were having problems with the gears stripping out. I'm not saying you are just that it has been a problem. I did not want to give general advice that could result in problems.
John

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