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HelicopterRadio - Servo - Gyro - Gov - Batt › Looking for Cyclic Servo Guide
01-27-2017 05:51 PM  9 months agoPost 21
TMoore

rrMaster

Cookeville, TN

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Tyler, what were you flying for servos before?

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01-27-2017 07:00 PM  9 months agoPost 22
nickmcdonald

rrNovice

new lenox, il

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To answer the op's question -

Your post doesn't elude to flying style which is slightly more relevant to servo choice than machine size. If you're talking full on 3d with an 800+ machine, just go to the top of whichever name brand you fancy. They are ALL good nowadays. If you're talking mild 3d at low headspeeds, any of the mid range servos will work perfectly fine, and you won't have to worry about taxing your power system. Which brings up the question, how do you plan to power this monster's electronics?

To give you something to chew on:
On the cheap servo < $100ea - Align DS615, BK7001, Xpert 4401
Very good ~ $150ea - BK8001, Xpert 5401, Xpert R2, MKS HBL960
Money means nothing to me - MKS X8, Futaba BLS273

In order of claimed torque @ 6V:
  • MKS X8 - 31
  • BK 8001 - 25.8
  • Xpert R2 - 21.4
  • BK 7001 - 17
  • Xpert 5401 - 14.9
  • MKS 960 - 13.6
  • Xpert 4401 - 13.4
  • Align DS615 - 12.8
  • Futaba BLS273 - 12.4
For background, in the last 17 years I've flown Futaba, Hitec, JR, Spektrum, Airtronics, Align, Outrage, Xpert and MKS servos. If I had a reason to upgrade today I'd personally go with any of the Xpert servos. Yes they are that good, yes they do feel that much different in the air. Plus I like the removable cable and soft start up features

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01-27-2017 07:25 PM  9 months agoPost 23
S.Favorite

rrVeteran

Brookville, OH

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I concur with nick, I have Xpert SI-4401 HV's in everything I own (to include my Short Couse Truck).

Citizen #27

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01-27-2017 08:03 PM  9 months agoPost 24
Tyler

rrElite Veteran

Chicagoland area

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http://www.servodatabase.com/servo/airtronics/94910

http://www.servodatabase.com/servo/airtronics/94930

http://www.servodatabase.com/servo/futaba/bls451

http://www.servodatabase.com/servo/align/ds610

http://www.servodatabase.com/servo/airtronics/94780m

To name a few servos im comparing the R2 to.

These range from precision, to high power, but never offered everything in a single servo.

Enjoy things that money can buy IF you don't lose the things money can't buy.

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01-27-2017 08:39 PM  9 months agoPost 25
whitehedr

rrApprentice

New Lenox, Il USA

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Richardmid1,
when Tyler bought his Logo he was not happy with how it flew. He felt it was sluggish and always behind the curve. He knew that the heli was not performing like a friends machine(same type) because he had watched his friends machine fly. He tinkered with setup of the machine and the controlller to no availe. He made the decision to try the R2 servos based on better specs than the servos he had on the machine. I witnessed the improvement of the flight characteristics with the R2 servos.

Tyler suggested that the OP try the R2 because they worked so well for him. Richard, I don't understand why you felt it was necessary to post your first sarcastic response and then continue to attack Tyler's statements. To me your behavior in this thread is rude and demeaning. It borders on the behavior of the libtards in this country where they demand that their way is the only way and another persons opinion and choice of words to describe the opinion be dammed. I think you owe Tyler and the OP an apology for hijacking the thread and attacking what Tyler had to say.

ROG

Retired Old Guy

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01-27-2017 11:04 PM  9 months agoPost 26
TMoore

rrMaster

Cookeville, TN

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There are so many variables that are present in any FBL machine, from the controller, the RX and to the servos. When you couple in arm length, voltage and overall disk rigidity of the head which includes the amount of feedback force present at the servos and blade stability it's hard to be totally objective in analysis. I think what Tyler was relating was the difference in his current to his former setup. That's where the stunning part comes in. I've seen this in many aspects of heli flying. It's called satisfaction; when one or a combination of changes result in a totally solid flying experience that was not present before.

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01-28-2017 03:31 PM  9 months agoPost 27
Richardmid1

rrProfessor

Leeds, England

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I will not apologise to anyone! In the same way Tyler won't apologise for misinformation!

Changing ONLY the servos won't make that much of a difference to how a heli actually flies!

There must be more to it! Higher Head speed, different pitch ranges, different fbl settings, or simply moving from plastic to metal servo arms! It is physically impossible for a heli to fly drastically different changing only the servos.

60% of the time, it works every time!

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01-28-2017 03:40 PM  9 months agoPost 28
Richardmid1

rrProfessor

Leeds, England

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Ah I see... Tyler what you felt came from an increase in servo torque compared to servos you had used previously, and that's all.

OK sorry, I thought we were talking about similarly spec'd servos.

Sorry again, I'm out.

60% of the time, it works every time!

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01-28-2017 04:23 PM  9 months agoPost 29
Tyler

rrElite Veteran

Chicagoland area

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To Matt, the original poster, I will gladly speak/chat with you further if you care to reach out to me. Posting here is obviously futile due to trolling.

Enjoy things that money can buy IF you don't lose the things money can't buy.

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01-28-2017 04:36 PM  9 months agoPost 30
Tyler

rrElite Veteran

Chicagoland area

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Ah I see... Tyler what you felt came from an increase in servo torque compared to servos you had used previously, and that's all.
OK sorry, I thought we were talking about similarly spec'd servos.
Wrong again, I had used 285 oz of torque previously, the most powerful servos available at the time with reasonable speed. Torque is not a "miracle" solution, as you like to say, by itself.

There have never been similarly spec'd servos available in one package. If you look at my servos used previously, they range from high speed, super high precision, high torque ( a lot of torque).

No other servo has ever offered everything in one servo, ESPECIALLY that is this efficient to reduce the load on the bec/battery supply.

Gone are the days that I believe 150oz of torque is enough for a 500-600 sized model. I have realized differently.

Speed, torque, precision, brushless, etc. cannot be considered in isolation. When this is all combined into one servo, then there is a tremendous difference realized.

Nothing else was changed in the model. I used the same...

Logo 600sx
Edge SE blades
Xnova motor
pinion
Kontronik esc
Kontronik bec w/ultra-guard
Glacier 12s batteries
Mikado carbon servo horn
Tail servo
Vbar neo link
Vcontrol
Same model profile programmed into the radio, just centered servos
same head speed settings/governor

Enjoy things that money can buy IF you don't lose the things money can't buy.

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01-29-2017 11:24 AM  9 months agoPost 31
dgoss999

rrApprentice

UK - Lancashire

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Matt.... What servos will you be running out to buy??

DG.

"Believe none of what you hear, and only half of what you see." • Benjamin Franklin

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01-29-2017 11:37 AM  9 months agoPost 32
iyoy

rrVeteran

Bacolod City,​Philippines

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Tyler

Those are very pertinent and informative data. Thanks!

iyoy

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01-29-2017 11:47 PM  9 months agoPost 33
MattJen

rrElite Veteran

UK

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wow
I only been away for 2 days,

Apologies if my original question was a little cloudy..

I will be flying a large Turbine trainer, the weight will be around 11kilo, I will be swinging 850 blades weighing 300g each...with a head speed of around 1280rpm

It is more for scale flying, so speed is not as critical as torqu, the reason for HV was I ideally only want to use regulator for tail servo, so I have a HV rx and ideally would want high torque brushless servos, the average speed from what I have seen is around 0.10, which for the style of flying I do is ample.

Thanks to all who contributed even though it may have got heated in certain parts..

Matt

All The Best

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01-30-2017 03:40 AM  9 months agoPost 34
whitehedr

rrApprentice

New Lenox, Il USA

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With a large helicopter like that torque is indeed your friend. The more the better.

ROG

Retired Old Guy

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01-30-2017 01:01 PM  9 months agoPost 35
Tyler

rrElite Veteran

Chicagoland area

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Matt,

I had 285oz of torque from a set of Airtronics servos, but they could consume 1,200mah of power in a single flight.

The Xpert R2 offer 366oz of torque and I now only use about 300mah of power from the rx battery.

This indicates great efficiency with more power.

Enjoy things that money can buy IF you don't lose the things money can't buy.

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HelicopterRadio - Servo - Gyro - Gov - Batt › Looking for Cyclic Servo Guide
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