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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › Align DS615S- Did I buy the wrong servos?
04-23-2016 07:32 PM  3 years ago
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basmntdweller

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Indianapolis IN

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Align DS615S- Did I buy the wrong servos?
I'm converting my last FB Heli to fbl. It's a Trex700N.
I checked with what's in the current Trex 700 combo kits and they listed the Align 615's. I ordered a set of them and a 655 for the tail.
I just received them and they are not what I expected. They are a low profile servo and with a bit of additional research I found there is a 615 and a 615S which is what I inadvertently ordered.
Are these suitable for my 700N or do they need to go back?

Thanks, Matt

Stupid people have no idea how stupid they are!!!
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04-23-2016 09:19 PM  3 years ago
don s

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Chesapeake, VA

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They have about 80% the torque of the 615.E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.
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04-23-2016 09:42 PM  3 years ago
rcflyerheli

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Granbury, TX USA

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The "S" designation usually means speed vs torque. Was there any compelling reasons to not go with say the 700 series servos.Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
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04-23-2016 10:08 PM  3 years ago
basmntdweller

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Indianapolis IN

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Haven't kept up with latest/greatest. Didn't know there is a 700 series servo. It would be nice to have the latest brushless servos but for the most part I'll never outfly the basic servos. Price is always a factor as well.

Matt

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04-24-2016 02:57 AM  3 years ago
Heli Fanatix

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Fountain Valley, CA

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Short Answer:
- You will be Fine

Technical Answer:
- Run @ 6.0v
- Brings the DS615S to 10kg

Supporting logic #1
- This is more than sufficient for my Hard 3D style
- I fly on 11.6kg @ 5.8v on my DS610 on 710mm on 12S
- When I fly @ 10.0kg @ 5.2v ... still no issues
- My model is 12.5lbs, your 700N will be lighter
- Making your application less torque intensive

Supporting logic #2
- Back in days, the Futaba S9250 was spec'd for .30 ~ .90
- Futaba S9250 Specs: 5.47kg @ 4.8v
- your DS610S's 8.5kg @ 4.8v would make it adequate

Supporting logic #3
- Lower HS of Nitro requires less torque from servo
- if you go with FB blades, the lighter blades will reduce required torque
- further giving you more peace of mind
- if you keep the FBL blades, you will still be OK.

DS615
Stall torque:10.4.cm(4.8V)
● Stall torque:12.8.cm(6.0V)

● Motion speed:0.09sec/60°(4.8V)
● Motion speed:0.07sec/60°(6.0V)
● Rating voltageC 4.8-6V
● Temperature range:-20°C~+60°C
● Dimension:40.1 x 20.1 x 37.3mm
● Weight:56g
● 1520μs standard band

DS615S Specification :
● Stall torque:8.5kg.cm(4.8V)
● Stall torque:10kg.cm(6.0V)

● Motion speed:0.09sec/60°(4.8V)
● Motion speed:0.07sec/60°(6.0V)
● Rating voltage: DC 4.8-6V
● Temperature range:-20°C~+60°C
● Dimension:40.1 x 20.1 x 25.5mm
● Weight:49g
● 1520μs standard band

Hope this helps
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04-24-2016 03:15 AM  3 years ago
basmntdweller

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Indianapolis IN

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Thanks for the info helifanatix. I wasn't sure if the torque was enough. I use LiFe RX packs almost exclusively now so it should be good.

Thanks, Matt

Stupid people have no idea how stupid they are!!!
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04-24-2016 03:18 AM  3 years ago
Heli Fanatix

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Fountain Valley, CA

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Anytime ...

BTW
you saved yourself 21grams aswell! LOL
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04-24-2016 04:15 AM  3 years ago
rcflyerheli

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Granbury, TX USA

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I suppose I was a little out of touch on my earlier post. Apparently Align has switched to the 800 series servos, but the ones I got with my V3 DFC were 700 series servos.

I would ordinarily feel that your servos are a little shy on torque for a 700 sized machine, but there is a competitive team that is running the JR SLS QRS servos in a Forza 700, and apparently not having any issues, and his son flys hard.

So I guess I maybe need to tone down my thinking that 250 oz of torque needs to go in anything bigger than a 600, as they demonstrate that it isn't necessary.

If you want to see if you could swap them out with the standard 615 servos, they do give you same speed specs, with higher torque and appear to be the same price. I apologize for suggesting something that wasn't accurate.
Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
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04-24-2016 11:00 PM  3 years ago
basmntdweller

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Indianapolis IN

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No problem heliflyer. I've been flying my other 700N with the older DS-610 servos and they are rated 166 oz/in. These 615S' are only a little less torque so I'll at least try them. If they feel like they are struggling I'll reorder the correct ones and use these elsewhere.

Thanks, Matt

Stupid people have no idea how stupid they are!!!
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06-16-2016 03:21 PM  3 years ago
bohelinut

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Hartselle,AL

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Futaba servos
How many tooth count 23 tooth or 25 tooth
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06-16-2016 03:43 PM  3 years ago
basmntdweller

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Indianapolis IN

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Most standard Futabas are 25.
Stupid people have no idea how stupid they are!!!
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