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RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

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Old 01-12-2009, 07:22 PM   #1
swedendude
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Exclamation Are towerpro sg-90 servos good???

HI I WAS JUST WONDER IF THESE SERVOS WERE GOOD?IM THINKING ABOUT ABOUT PUTTING THEM IN MY 42INCH ELECTRIC TRAINER PLANE?
AND WOULD THEY BE POWERFUL ENOUGH FOR THIS PLANE THEY HAVE
17 OZ POWER?
http://www.graysonhobby.com/catalog/...products_id=90 HERES THE SERVO

THANKS !!!!!!!
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Old 01-12-2009, 07:30 PM   #2
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They will be plenty strong enough for that plane and if they are anything like the HXT900 from hobbyking, they are a good servo.

The trick is not to see how strong you can make the plane.
It is to see if you can make it just strong enough.
-PD1

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Old 01-12-2009, 07:32 PM   #3
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Originally Posted by swedendude View Post
HI I WAS JUST WONDER IF THESE SERVOS WERE GOOD?IM THINKING ABOUT ABOUT PUTTING THEM IN MY 42INCH ELECTRIC TRAINER PLANE?
AND WOULD THEY BE POWERFUL ENOUGH FOR THIS PLANE THEY HAVE
17 OZ POWER?
http://www.graysonhobby.com/catalog/...products_id=90 HERES THE SERVO

THANKS !!!!!!!
swedenBub:they'll be fine, And Jeff at Heads Up Rc has them on sale! I use them on near everything I fly,bub, steve


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Old 01-12-2009, 07:33 PM   #4
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Thanks!!!! Is hextronic a better brand??
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Old 01-12-2009, 07:35 PM   #5
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My plane is balsa not foam? Im just making sure im new at this?and will problay end up weighing between 20 and 30 oz i think?
Thanks
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Old 01-12-2009, 07:36 PM   #6
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I think there the same servo as awhile back I was take'in the label off to glue it on a plane and it had a tower-pro label under it!! HaHaaa! bub, steve

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Old 01-12-2009, 07:36 PM   #7
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Originally Posted by swedendude View Post
Thanks!!!! Is hextronic a better brand??
dunno about better, I just tend to do more bulk shopping from HK and these fit the bill just fine.

FYI, the only 1 I had a problem with was my fault! I hooked all the control linkage up, before centering the servo. When i plugged in the battery, the control arm was 90deg off and it went to center against the control surface and ground the gears into dust before I could figure out what was happening.

The trick is not to see how strong you can make the plane.
It is to see if you can make it just strong enough.
-PD1

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Old 01-12-2009, 07:38 PM   #8
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How do you center a servo???
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Old 01-12-2009, 07:44 PM   #9
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Originally Posted by swedendude View Post
My plane is balsa not foam? Im just making sure im new at this?and will problay end up weighing between 20 and 30 oz i think?
Thanks
No prob's at all, I got a dozen balsa planes fly'in 9 gramers all weigh at lease that or more bub, steve


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Old 01-12-2009, 07:47 PM   #10
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Hook it up an turn it on-, make sure your tran trims are centered, then turn off, they should be centered, bub, steve

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Old 01-12-2009, 07:52 PM   #11
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alright will do so should i get the tower pro brand,hextronic , or all the others that are the same or are there any recommendations???
thanks!!!!
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Old 01-12-2009, 07:56 PM   #12
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Originally Posted by swedendude View Post
alright will do so should i get the tower pro brand,hextronic , or all the others that are the same or are there any recommendations???
thanks!!!!
Either or my bub, I'd get um from Jeff as his shipp'in 2$ for 1 or 100 and his service can't be beat by anyone, I've had him answer E-Mails in Min's (or always the same day)Stands behind his stuff like NO OTHER!!, do you need a link?bub Steve
http://www.headsuprc.com/servlet/StoreFront

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Old 01-12-2009, 07:58 PM   #13
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SERVO - 9g TP SG90 Sub Micro Servo

TP SG90 9 gram Sub Micro Servo
The TP SG90 is similar in size and weight to the Hitec HS-55, and is a good choice for most Parkflyers. I have this servo installed in most of my models, including my GWS Slow Stick, E-Flite Mini Edge, GWS Corsair, Simple Stik, GWS Beaver, and World Models 48" Piper Cub. If you are looking for a servo that won't break the bank, yet gets the job done reliably, consider the TP SG90.
The TP SG90servo weighs 0.32 ounces (9.0 grams). Total weight with wire and connector is 0.37 ounces (10.6 grams).
The TP SG90 has the universal "S" type connector that fits most receivers, including Futaba, JR, GWS, Cirrus, Blue Bird, Blue Arrow, Corona, Berg, Spektrum and Hitec.
The wire colors are Brown-Red-Orange: Red = battery positive Brown = battery negative Orange = signal

TP SG90 Specifications:
Dimensions (L x W x H) = 0.86 x 0.45 x 1.0 inch (22.0 x 11.5 x 27 mm)
Weight = 0.32 ounces (9 grams)
Weight with wire and connecter = 0.37 ounce (10.6 grams)
Stall Torque at 4.8 volts = 17.5 oz/in (1.2 kg/cm)
Operating Voltage = 3.0 to 7.2 volts
Operating Speed at 4.8 volts (no load) = 0.12 sec/ 60 degrees
Connector Wire Length = 5.9 inches (150 mm)
Universal "S" type connector fits most receivers
Shipping is only $2.00 by First Class Mail - for 1 item or 100 items! All the same item, or many different items! If you pay for all of your items together, you will pay a total of $2.00 shipping on your entire purchase. OR, select the Priority Mail option during check out to guaranty that all of your items will be shipped by Priority Mail for a flat $5.00 fee. Wisconsin residents will be charged 5.5% sales tax.
<table border="0" cellpadding="0" cellspacing="0" width="100%"><tbody><tr valign="top"><td nowrap="nowrap">PRICE: </td> <td valign="top" width="100%"> $5.95

bub steve
</td></tr></tbody></table>

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Old 01-12-2009, 08:01 PM   #14
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thanks
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Old 01-12-2009, 08:06 PM   #15
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Moved to RC Radios, Transmitters, Receivers, Servos, gyros.

- Kev
AMA 873921
RC Dusters Flying Club, AMA 3875, Sandwich, IL

Question with Boldness. Hold to the Truth. Speak without fear.


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Old 01-12-2009, 08:06 PM   #16
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Keep us updated on you plane! and I guess you can tell I like pixs,, got any of your plane yet? Best do that BEFORE you fly her ( trust me on this one HaHaaa!) your bub, steve

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Old 01-12-2009, 08:06 PM   #17
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Originally Posted by gfdengine204 View Post
Moved to RC Radios, Transmitters, Receivers, Servos, gyros.
Thanks Kev! bub, steve

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Old 01-12-2009, 08:59 PM   #18
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Alright I'll buy 4 sg-90 servos and see what happens oh and I'll get a link to my plane soon!will the servos fit in a airtronics reciever??
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Old 01-12-2009, 09:00 PM   #19
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Originally Posted by stevecooper View Post
Thanks Kev! bub, steve
Yer very welcome, bub. That's why they pay me the big bucks.....

- Kev
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Old 01-12-2009, 09:12 PM   #20
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So bottom line the sg-90 servos will be plenty power for a 20-40 once 20-30 mph 42inch trainer electric? Thanks again
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Old 01-12-2009, 11:07 PM   #21
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Originally Posted by swedendude View Post
Alright I'll buy 4 sg-90 servos and see what happens oh and I'll get a link to my plane soon!will the servos fit in a airtronics reciever??
Sure they'll work fine, your bub, steve


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Old 01-12-2009, 11:42 PM   #22
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Originally Posted by stevecooper View Post
Hook it up an turn it on-, make sure your tran trims are centered, then turn off, they should be centered, bub, steve
Let me add something to what Steve said. After the servo centers, remove the servo arm, if necessary, and place the servo arm at a 90 degree angle to the servo. It is better if this is done without any linkages to the control surfaces attached or you will end up like Paul (pbert1975) with servo gear powder.

Now they are centered and ready for the linkages.

If the arm is not exactly 90 degrees to the servo, you can use the transmitter trim to center them.

Jim
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