Servos - Analogic x Digital - Coreless?
01-03-2003, 03:07 PM
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Servos - Analogic x Digital - Coreless?
Hi all
I just bought a 33% Extra and I'd like to have some help choosing what servos to be used on it.
I've a 8 ch Futaba radio.
1. What should be better, to use all digital Hitec servos (5625 MG)no coreless or Futaba analogic coreless servos (9202) ?
2. What are the differences between coreless and no coreless servos?
Thank you
I just bought a 33% Extra and I'd like to have some help choosing what servos to be used on it.
I've a 8 ch Futaba radio.
1. What should be better, to use all digital Hitec servos (5625 MG)no coreless or Futaba analogic coreless servos (9202) ?
2. What are the differences between coreless and no coreless servos?
Thank you
01-03-2003, 03:44 PM
#2
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My Feedback: (2)
coreless
A coreless servo has no iron core in its motor armature. Standard servos use a iron core armature. So a coreless servo without an iron core can re-act faster and be more precise. Coreless servos tend to operate a little hotter because the iron core in standard servos acts like a heat sink.
01-03-2003, 03:48 PM
#3
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My Feedback: (3)
Servos - Analogic x Digital - Coreless?
Hitec 5625s and 5645s will do it for you in the following configuration:
(4) 5625s (2) per airlon
(2) 5645s (1) per elevator halve
(2) 5645s (2) per rudder
(1) standard servo for throttle.
The only difference I can gleam out of the specs between the Hitec HS-5625 (2-pole ferrite) and Hitec HS-5925 (coreless) is that the HS-5925 is almost twice as fast. The other common sense difference is the wear-n-tear on the motor, eventually the HS-5625 motor will wear out its brushes, sometime in the year 3000.
BTW, the HS-5925 costs about 75% more than the HS-5625.
NOTE: I have seen a 3rd-scale Hanger 9 Cap 232 run with the following servo configuration (pilot does not put airplane through heavy 3D maneuvers):
(4) HS-605 (2) per airlon
(2) HS-605 (1) per elevator half
(2) HS-605 (2) per rudder
(1) standard servo for throttle.
(4) 5625s (2) per airlon
(2) 5645s (1) per elevator halve
(2) 5645s (2) per rudder
(1) standard servo for throttle.
The only difference I can gleam out of the specs between the Hitec HS-5625 (2-pole ferrite) and Hitec HS-5925 (coreless) is that the HS-5925 is almost twice as fast. The other common sense difference is the wear-n-tear on the motor, eventually the HS-5625 motor will wear out its brushes, sometime in the year 3000.
BTW, the HS-5925 costs about 75% more than the HS-5625.
NOTE: I have seen a 3rd-scale Hanger 9 Cap 232 run with the following servo configuration (pilot does not put airplane through heavy 3D maneuvers):
(4) HS-605 (2) per airlon
(2) HS-605 (1) per elevator half
(2) HS-605 (2) per rudder
(1) standard servo for throttle.
01-03-2003, 08:23 PM
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Servos - Analogic x Digital - Coreless?
Hi Jim
Thank you for your answer.
So do you think using a non coreless digital Hitec servo should be better then a Futaba 9202 coreless analogic servo?
Thank you for your answer.
So do you think using a non coreless digital Hitec servo should be better then a Futaba 9202 coreless analogic servo?
01-03-2003, 08:34 PM
#5
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My Feedback: (2)
Servos - Analogic x Digital - Coreless?
I think one of the main difference between Digitals and non-Digitals is the holding power of digitals. If your control linkages are smooth and free moving then digitals would be your best bet. If there is any binding in the linkages stay away from digitals as they fight to hold and drain a battery very quickly.
