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Are these servos worth trying to use?

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Are these servos worth trying to use?

Old 03-13-2010, 01:21 AM
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hugger-4641
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Default Are these servos worth trying to use?

Among some other items I bought recently, I ended up with several older servos and I don't know if they are worth trying to use or say how they might compare to a 3003 or 3004. I've got a couple old trainers with brand new 3004's that I could pull out and put in something else if these old servos would be suitable for using in a trainer.
Here is a list of what I got, any info would be helpfull, torque, speed, stronger or weaker than a 3003? Better for .40 or .60 size plane? etc. Thanks in advance!

Futaba
FP-S48
FP-S148
FP-S28
FP-S128

HI TECH
HS-402X
HS-425BB


Old 03-13-2010, 01:50 AM
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huck1199
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Default RE: Are these servos worth trying to use?

S-48 and S-28 are older full size servo's with the old "G" type AM connectors, you would need to change the connector to use with any radio sold in the last 10 years I'd say. They are servicable on any function.
S-148 - slightly more modern but still pretty old but has regular "J" connectors which are standard now.
The ones with G connectors have a different nuetral and you will beed to move the arm off center or use a lot of subtrim in your Tx to compensate.
Old 03-13-2010, 07:14 AM
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airbusdrvr
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Default RE: Are these servos worth trying to use?

I know the S148 and HS 225BB. The S148 is an older Futaba but there are many of them still flying. If they are functional with not a lot of play at the top bearing, use them. The 225s are good little servos. I save all the older servos that are good and use them for throttle or some other non-critical flight function.
Old 03-13-2010, 11:11 AM
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crossman
 
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Default RE: Are these servos worth trying to use?

I still use a set of S148's in my Eagle II. They are good servos, just less torque than a 3003 or a 3004. I have a couple of S28's around, I use one of them on my test stand. An adapter used to be available, but I think you would have to change the lead to use them now.

http://www.servodatabase.com/

This site lists the specs of a lot of servos, I don't know if all of them are there but it may give you some info.

BTW, I just looked at towerhobbies, they still sell S-148's

http://www3.towerhobbies.com/cgi-bin...&I=LXH318&P=ML
Old 03-13-2010, 05:29 PM
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hugger-4641
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Default RE: Are these servos worth trying to use?

Ok, thanks for the response and the link fellas. That tells me what I needed to know. I'm gonna put those 148's in my trainers and move those new 3004's to my "new to me" Venus 40 and a new T-34 I haven't put together yet.
Thanks again and happy flyin!
Old 03-14-2010, 09:28 AM
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Rodney
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Default RE: Are these servos worth trying to use?

Those old 148 were probably one of the best of the low priced servos ever made. I have some I still use, even on the bigger planes. If you are a bit handy you can also open up the even older 128's etc. and reset the neutral point. You just open up the servo case and back off a screw holding the motor into the case, reposition the motor a few degrees and retighten the screw that holds it in place. Those were also very rugged servos that are perfectly serviceable in most modern setups.
Old 03-14-2010, 11:26 AM
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jimmyjames213
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Default RE: Are these servos worth trying to use?


ORIGINAL: hugger-4641

Ok, thanks for the response and the link fellas. That tells me what I needed to know. I'm gonna put those 148's in my trainers and move those new 3004's to my ''new to me'' Venus 40 and a new T-34 I haven't put together yet.
Thanks again and happy flyin!
that will work, just change the plugs on the others and use them for throttle/bombdrop/ect
Old 03-15-2010, 02:45 PM
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Default RE: Are these servos worth trying to use?

I have a lot of the older servos like these.

I lean toward using them for throttle only, unless I am real sure about them.

sticks

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