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HelicopterRadio - Servo - Gyro - Gov - Batt › Servos Torque/Speed Comparison
12-19-2015 11:54 PM  24 months agoPost 1
aaryan

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Kuwait

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Hello

I’m having question about cyclic servos and Rudder Servos I have been using Futaba servos for more than 6 years till I reached BLS275Sv which the latest heli servo till date

Now when I compare it with other servos like
JR, MKS, Highest Servo (have someone try them), BK, Align etc...

They are having much higher torque than the Futaba Servos
Do I need this torque for extreme 3d flying?

Servo Name Torque @7.4Volt Speed @7.4Volt Price

Futaba BLS275 /15.2 kg-cm/ 0.07 sec/60°/ 250 USD
Highest HS2000 /26.1kg-cm/ 0.07sec / 189 USD
MKS HBL380 (X8) /39kg-cm/ 0.092sec / 189 USD
Align BL800 /22kg-cm/ 0.06se / 148 USD
BK 8001HV /29.5kg-cm/ 0.09sec/60/ 145 USD
JR 8717HV /16.56kg-cm/ 0.06sec/60/ 199 USD

Please Note I’m doing this comparison because there is a lot servos in the market and I’m confused when I come to select new servo for new heli
Please share your experience which Servo is preferable and why
There is stall torque, dynamic torque and holding torque (correct me if I’m wrong) what is the deference and does these companies state the same torque

Best Regards
ALI

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12-20-2015 02:53 AM  24 months agoPost 2
Heli Fanatix

rrVeteran

Fountain Valley, CA

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Simple answer:
- No you don't need that much torque and speed
- 95% of the servo's on the market are good enough

Technical Answer
- most people turn up the expo and down the agility when going to 7.2v or 8.4v on BK, MKS X-8 or other HV servos.
- 5.6v vs 6.0v performance is not noticeable on none HV Servo's
- Higher voltage creates bigger demands on BEC's and running 2S are ideal
- HV is whole different animal, but you have to tame the beast

Myself:
- I fly smooth, big air, speed and hard 3D with instantaneous reversals (a level 5+ Proficiency Level Pilot)
- I use Align DS610M @ 5.6v. These coreless servos that are known to be power hungry .. 1,500+ flight
- 5.6v is the ticket for a happy BEC with plenty of speed of power for my needs
- Heck, I even ran my Torque 9180 @ 5.6v with great results
- but the Torque 9188 rudder servo doesn't like 5.6v, they like to be at least 6.0v to not stall on hard CCW pirouetting (while upright), but if the pirouetting rate is 2 sec or slower per revolution, you will be OK.

* This is just my opinion and this is what I use on all my fleet. I have MKS, Futaba, JR, BK BLS and Coreless all on hand at my disposal but I see no need for them since the DS610M suits my needs.

Hope this helps

- Scott

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12-20-2015 01:23 PM  24 months agoPost 3
aaryan

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Kuwait

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thank you very much for the useful information i totally agree with what you are mentioning

Thanks again

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12-20-2015 05:20 PM  24 months agoPost 4
Heli Fanatix

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Fountain Valley, CA

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Anytime ... You are very welcome

- Scott

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HelicopterRadio - Servo - Gyro - Gov - Batt › Servos Torque/Speed Comparison
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