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Old 06-08-2019, 09:21 AM
squishall is offline
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Will these servos be OK for a Skywing ARS 300 102" ?

Hello and thank you for any advice you may give me.

I have just bought a new airframe and want to put in servos that will be sufficient to equip this airplane with.

I am an experienced flyer with giant scale airframes. My style of flying is aerobatics with some 3D thrown in. I would not consider myself a hard-core 3D'er.

The ARS 300 takes 2 servos per wing, 2 for elevator and 1 for rudder. I have 7 new SAVOX 1231SG which tourque at 444 oz. in. at 6v.

Will these work for me?
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Old 06-08-2019, 09:32 AM
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Should be good but careful considering for the rudder if gonna do lot of knife edge can push a lot of load. I use 7 savox 1270 on my H9 Extra 300 35% and I fly sport but no hard 3D on this frame.
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Old 06-08-2019, 09:57 AM
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I will put a higher torque servo on rudder. I think that would work.
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Old 06-08-2019, 10:22 AM
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any concern you have about rudder - fly it first and then decide. I also run 1270s on a number of 35%s and rudder authority is fine. assuming you bought it from Tim at NW, he is a great resource on questions such as this.
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Old 06-08-2019, 12:54 PM
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The 1231 SG was / is one of my “go to” 6V servos. Good solid performance, decent speed and torque and the gears don’t seem to develop any excessive lash over time. All at a reasonable price. They are taller and a bit heavier than some other servos with comparable specs. All of mine are run on A123 Life power.
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Old 06-08-2019, 03:25 PM
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Oh by the way the 1270 are HV servo so if you're sticking 6V instead of 7.4v so I would say savox 1230 will do since has 500oz at 6V. Same cost as the 1231.
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Old 06-08-2019, 03:58 PM
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The 1230 is a bit slower than the 1231 but the same servo otherwise. You pay for that additional torque by losing a bit of speed. I have a number of the 1270 also and they are good but the gearing isn't as tight as the 123x series. When considering the 1270 these days I look to the Hitec “D” series, the D955TW in particular. Maybe should look at Pro Modeler servos. Haven’t bought any new servos in awhile.
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Old 06-08-2019, 05:44 PM
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Hi Squishall,

Has it arrived yet? Anyways it's a push pull setup, on my Edge 540 I'm using overkill 42kg servos x 2 for rudder. 50kg servos for each elevator half and 50kg servos for the 4 aileron servos. It's way overkill but it's what I have in my inventory if hobby stuff.

You could get away with 35kg servos x 4 for the wings, if you get blowback doing rifle rolls you'll need to up that.

For elevators, 42kg is actually the right servo if you are using 2 inch arms. I've got 58 degrees up and down on my elevators.

Check out the build blog here: https://www.flyinggiants.com/forums/member.php?u=69479
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