Futaba 3152 Servo....any info?
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Futaba 3152 Servo....any info?
Just curious if anyone is using the 3152 Futaba digital servo??
http://www2.towerhobbies.com/cgi-bin...?&I=LXHKB0&P=7
They are right in the range for torque and speed I am looking for and the price is good.... but searches brought up almost nothing..
the specs for them say they are for cars or boats...is there a reason to not use thm in planes??
they are in ths same range for size and weight of other servos....
any thoughts??
http://www2.towerhobbies.com/cgi-bin...?&I=LXHKB0&P=7
They are right in the range for torque and speed I am looking for and the price is good.... but searches brought up almost nothing..
the specs for them say they are for cars or boats...is there a reason to not use thm in planes??
they are in ths same range for size and weight of other servos....
any thoughts??
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RE: Futaba 3152 Servo....any info?
These servos are still relatively new; not many folks have them yet. There are a dozen or so 3151s at my field. At first, I thought that the idea of an inexpensive digital sport servo was a splendid one. But these servos, in use for a few months, are already slowing signs of slop.
This is far too small of a cross-section to draw any conclusions from; but it is enough to give me pause. I have four 3151s that I'm going to put in a Sig Kougar, fly them for a while, and see how they do before I buy any more.
To address your specific question, no, there is no particular reason not to use a designated "car servo" in an aircraft. The JR 4735 analog is a purpose-specific high-end car steering serevo that just happens to work admirably as a helicopter servo, and, in fact, was one of the tail rotor servos of choice prior to the advent of digitals.
What I'm curious about is this: going by the specs, the only difference between the 3151 and 3152 is that the latter is a hundreth of a second slower and somewhat stronger (torque output wise); yet it is two bucks cheaper. My guess is that what we're seeing here is similar to the 3001/3004 situation.
While both are "standard" ball-bearing servos, the 3001 is really just a S148 with a bearing. The S148 has been Futaba's bread'n'butter servo for many, many years. The 3004 is a follow-on, made to sell for less (or more profit margin, depending upon your point of view). The REAL difference is that the 3004 has a less-sophisticated feedback potentiometer, and will fail under high vibration levels; such as exist in model helicopters.
If that is the case, then I would not hesitate to use the 3152 in a fixed wing airplane. But it could be something like a cheaper motor, etc.
Perhaps Bax will see this and chime in. He's the service guru (I think), and would probably know if anyone does.
This is far too small of a cross-section to draw any conclusions from; but it is enough to give me pause. I have four 3151s that I'm going to put in a Sig Kougar, fly them for a while, and see how they do before I buy any more.
To address your specific question, no, there is no particular reason not to use a designated "car servo" in an aircraft. The JR 4735 analog is a purpose-specific high-end car steering serevo that just happens to work admirably as a helicopter servo, and, in fact, was one of the tail rotor servos of choice prior to the advent of digitals.
What I'm curious about is this: going by the specs, the only difference between the 3151 and 3152 is that the latter is a hundreth of a second slower and somewhat stronger (torque output wise); yet it is two bucks cheaper. My guess is that what we're seeing here is similar to the 3001/3004 situation.
While both are "standard" ball-bearing servos, the 3001 is really just a S148 with a bearing. The S148 has been Futaba's bread'n'butter servo for many, many years. The 3004 is a follow-on, made to sell for less (or more profit margin, depending upon your point of view). The REAL difference is that the 3004 has a less-sophisticated feedback potentiometer, and will fail under high vibration levels; such as exist in model helicopters.
If that is the case, then I would not hesitate to use the 3152 in a fixed wing airplane. But it could be something like a cheaper motor, etc.
Perhaps Bax will see this and chime in. He's the service guru (I think), and would probably know if anyone does.
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RE: Futaba 3152 Servo....any info?
Excellent info.....thanks....I didn't realize they were that new....
it is for the Ailerons of a .60-.90 size plane so I don't need huge torque but I really like digital now that I have flown with them...
I was looking at the Hitec 5475 as well
Cheers
it is for the Ailerons of a .60-.90 size plane so I don't need huge torque but I really like digital now that I have flown with them...
I was looking at the Hitec 5475 as well
Cheers
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RE: Futaba 3152 Servo....any info?
Given a choice between the Futaba 3151 and Hitec 5475 I'd go for the Hitec every time.
I'm using the 5475s on several planes and they are great -- although they really do need a 5-cell pack to give (what I would call) acceptable speed -- but then again, I mainly fly 3D.
Other fliers at our club are using the Futaba 3151 servos and most of them are getting quite sloppy after just a few months' use. It appears as if there's a lot of radial lay in the output shaft. By comparison, my Hitecs are as tight now as the day I installed them and some have more than 40 hours hard flying on them.
The real difference is that the S3151 servos sell for just $19.95 (ServoCity's two-for-one deal) whereas the Hitecs are nearly twice the price at $35.
Rather than also use these cheap Futaba digitals, I'm using non-digital HS475 ones ($17) on most of my sport planes. They're possibly not as precise (although I can't see any difference) but they have lots more torque and won't wear out any time soon.
I'm using the 5475s on several planes and they are great -- although they really do need a 5-cell pack to give (what I would call) acceptable speed -- but then again, I mainly fly 3D.
Other fliers at our club are using the Futaba 3151 servos and most of them are getting quite sloppy after just a few months' use. It appears as if there's a lot of radial lay in the output shaft. By comparison, my Hitecs are as tight now as the day I installed them and some have more than 40 hours hard flying on them.
The real difference is that the S3151 servos sell for just $19.95 (ServoCity's two-for-one deal) whereas the Hitecs are nearly twice the price at $35.
Rather than also use these cheap Futaba digitals, I'm using non-digital HS475 ones ($17) on most of my sport planes. They're possibly not as precise (although I can't see any difference) but they have lots more torque and won't wear out any time soon.