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HelicopterRadio - Servo - Gyro - Gov - Batt › what is the requirement of servo speed for CGY750
02-26-2017 03:18 AM  9 months agoPost 1
lijin

rrNovice

manchester, UK

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I have CGY 750 plus bls272sv on my 700 helis and they are a perfect match. Now I am building a new 700 heli and want to save some money on the servos. I find the S3072HV(@7.4V/ 90 oz-in (6.5 kg-cm) /0.15 sec/60° ) has a good price and torque and it is in my budget range. But I am not sure it is fast enough to work with CGY on 700 heli. Anyone has tried this match on 700 heli? what is the suggestin on cheap servo choice? I like to use futaba servos.

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02-26-2017 04:48 AM  9 months agoPost 2
don s

rrElite Veteran

Chesapeake, VA

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It doesn't necessarily have a servo speed requirement (you can even use analogs), but the servos you have chosen seem a little weak (torque) for a 700, unless you're a gentle flier.

E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.

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03-03-2017 04:45 AM  8 months agoPost 3
Kloss08

rrApprentice

Bradford PA USA

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Slower servos = less gain if my memory is correct

Team Futaba
Team Pulse Batteries
Enjoy it today

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03-03-2017 07:35 AM  8 months agoPost 4
EEngineer

rrProfessor

TX

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The BLS 272sv at 7.4V has a speed of .08sec/60 deg.

In the Futaba CGY750 videos, Nick Maxwell is using servos with a speed of .06sec/60 deg.

The cheaper servo that your mentioned has a speed of .15sec/60 deg.

About twice as slow....

I don't think you could expect performance equivalent to your other heli using the .08sec/60 deg. servo.

FWIW

Logo 600SXs, 800XX, TDR IIs

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