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HelicopterFlybarless Rotor Head SystemsFutaba CGY › Question about servos?
04-05-2011 12:58 AM  6 years agoPost 1
thenewguy

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Corvallis, Oregon​Where there is​liquid sunshine!

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Is anyone running the GY750 and BLS451 servos? If you are how is it working out for you?

Just looking for a little feedback.

Thanks,
Chris

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04-05-2011 01:41 AM  6 years agoPost 2
ssmith512

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Indianapolis, IN USA

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I have BLS451's on my ENV w/ the CGY750. Only been able to do one 2 minute hover with it so far. Doesnt look like Mother Nature will allow me to get any more flying in for at least 5 or 6 days

I have run the BLS451's on the Align 3G and CYE Total G system as well for the past year and never had any issues. They are my servo of choice for cyclics. I want to try the BLS252's on my next build.

Steve

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04-05-2011 02:21 AM  6 years agoPost 3
Kevin Dalrymple

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Indianapolis

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Is anyone running the GY750 and BLS451 servos? If you are how is it working out for you?
Great. I love them have them on my 600 and 700. What else would you like to know?

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04-05-2011 10:54 AM  6 years agoPost 4
Ben-T-Spindle

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Central Illinois

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I am also running BLS451 servos and they are perfect. I have been using Futaba BLS servos for a few years and they are the only servos I consider buying these days. They are very powerful and take much less current than other brands. I really don’t know why anyone would buy those old fashion obsolete brushed motor servos, they are just so inefficient.

... BTS

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04-05-2011 02:34 PM  6 years agoPost 5
joe1l

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long valley, NJ

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i'm running the BLS451's on all my helis and have two 750's setup with the BLS451's. I think the servos work great regardless the FBL system you use!

Fusion 50 CGY750 YGE90HV
Outrage 550 BeastX Jive100
Gaui X5 Vbar 5.1
Gaui X5 CGY750

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04-05-2011 06:27 PM  6 years agoPost 6
thenewguy

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Corvallis, Oregon​Where there is​liquid sunshine!

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Thanks guys for your feedback. I have gotten the information I need from several sources. I will be switching out my BLS451's for some BLS252's

Thanks for your help,
Chris

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04-05-2011 06:34 PM  6 years agoPost 7
ssmith512

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Indianapolis, IN USA

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Would like to get your feedback on the BLS252's.

Steve

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04-05-2011 06:50 PM  6 years agoPost 8
Ben-T-Spindle

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Central Illinois

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The BLS451 is faster than the BLS252 so I would think that the 451 would be much better for flybarless?

... BTS

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04-05-2011 07:10 PM  6 years agoPost 9
ssmith512

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Indianapolis, IN USA

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As I understand it, speed is not necessarily the only key to a "good" FBL servo. Centering ability and deadband come into play, and depending on overall application may even be of more importance than absolute speed.

Steve

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04-05-2011 07:55 PM  6 years agoPost 10
Kevin Dalrymple

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Indianapolis

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I believe it is like a car engine, torque and speed (how fast it revs or moves) is what is important. If a servo has good torque it will most likly have good centering if it is digital. Speed is always a good thing for feel of the heli. Dead band is a funny thing and most manufacuters set there own dead band limit. If the dead band is to big the servo will seem like is dose not center well. If it is to small it might have drift issues as it can not seem to stop in the dead band. Just my thought.

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04-05-2011 07:56 PM  6 years agoPost 11
Heli 770

rrProfessor

USA.

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ssmith512

That is what Futaba Says.

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04-05-2011 08:07 PM  6 years agoPost 12
thenewguy

rrElite Veteran

Corvallis, Oregon​Where there is​liquid sunshine!

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As I understand it, speed is not necessarily the only key to a "good" FBL servo. Centering ability and deadband come into play, and depending on overall application may even be of more importance than absolute speed.
Steve is right on the money from the information that has been given to me from several Futaba reps.

The BLS451 may work for a majority of people. I have ran into some minor issues with them only in certain circumstances that does not work for me. I want a servo that work correct in the application I have it. The BLS252 should be that from my understanding.

Now I just need a HV tail servo from Futaba and I will be a very happy camper.

Thanks,
Chris

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