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Sailplane Servo

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Old 04-18-2005, 11:52 AM
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Bidule
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Default Sailplane Servo

Hello guys....

I have a Sophisticated Lady that was given to me and i would like to fly it this summer. I want to order the flight pack this week and i need some advice on what kind of servos to use. I am a "JR" fan so i looked at their flight packs and the only one available with small servo are the flight pack with "[link=http://www.greathobbies.com/scart/productinfo.php3?PartNumber=JRPS241]241[/link]" micro servos, @ 17 oz-in of torque. Are those servo powerfull enought cause 17 oz looks pretty low to me. I can also go with "Hitec" which has much more flight packs available, like this "[link=http://www.hitecrcd.com/Accesories/packFthr.htm]HS-55[/link]" or this "[link=http://www.hitecrcd.com/Accesories/packMicro.htm]HS-81[/link]"
I noticed that what Jr call micro is same torque as feather from Hitec.

Thanks for helping [X(]

Old 04-19-2005, 08:04 AM
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lownslo
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Default RE: Sailplane Servo

I am a big fan of Hitec equipment. I have used the HS-81's and they should do the job well. Nothing wrong with JR guys..... Hitec is just a "good bang for the buck" in my opinion. ... lownslo...
Old 04-19-2005, 08:24 AM
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aeajr
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Default RE: Sailplane Servo

I have a 3m Airtronics Legend. I use HS-81 MG servos for Ailerons and flaps. I have HS-81 for rudder and elevator.

Have had no problems. However I do recommend the metal gears for flaps and ailerons as these tend to take hits on landing and the nylon gears can strip out.

HS-85s may be options.

Finally the Hitec HS-125 MG is a flat wing servo that I purchased for my 3.6M scale sailplane.

Hitec Servos:
http://www.hitecrcd.com/product_fs.htm
Old 04-19-2005, 12:46 PM
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Bidule
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Default RE: Sailplane Servo

Ok ...

Thanks for infos i will order the Hitec [link=http://www.hitecrcd.com/Accesories/packMicro.htm]micro flight pack [/link] with the 555 receiver and HS-81 Servos.
The flight pack is not available with the HS-81MG, can i replaced the plastic gears with metal gears later when they break ?
Is it the same casing ?
Old 04-19-2005, 12:56 PM
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Johng
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Default RE: Sailplane Servo


For a Sophisticated Lady, there is no need for MG servos unless you are in the habit of bashing the tail into the door frame when packing & unpacking. As long as your pushrods and linkages operate freely, the HS-81s are plenty. Good luck
Old 04-19-2005, 02:11 PM
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Default RE: Sailplane Servo

If you order, then just order two metal gear replacement kits. They are the same servo just different gear set.

The flaps are the most likely to be stripped since you may not get them up fast enough when you land and end up stripping them on a landing.

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