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Old Jul 04, 2012, 08:39 AM
Gaint Scale
PowerSlave's Avatar
United States, KY, Louisville
Joined Dec 2009
187 Posts
I would like to run the BLS-157HV all around but at $180 plus each that's alot of cash. I'm at the field right now with to guys flying 700E Trex with Savox servos. They really like them and both have 100 plus flights on them.

Both work at a local hobby shop and said they would give me a great deal on the Savox 2270's if I went with that brand. Looks like the Savox 2270's are in the lead for the 104" Slick. I would the only person running them in a GS plane in my area while everyone else runs Hitec and MKS.
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Old Jul 04, 2012, 08:50 AM
Gaint Scale
PowerSlave's Avatar
United States, KY, Louisville
Joined Dec 2009
187 Posts
Don't get me wrong I like the 7955 and run them in all the other planes I fly but if people are having issues with 2 per wing and 1 per elevator on the 104 then I'll feel better running a servo that people are not having issues with just for peace of mind.
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Old Jul 04, 2012, 08:56 AM
Fly Low-Crash-Rebuild-Repeat !
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Jackson, MO
Joined May 2009
3,220 Posts
Quote:
Originally Posted by PowerSlave View Post
Don't get me wrong I like the 7955 and run them in all the other planes I fly but if people are having issues with 2 per wing and 1 per elevator on the 104 then I'll feel better running a servo that people are not having issues with just for peace of mind.
Running that exact set-up on mine.

No issues, no blow-back and no flutter.

My mind is at peace...
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Old Jul 04, 2012, 10:02 AM
Team 3DHS
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San Antonio, TX
Joined Sep 2004
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For the longest time 7955s are the standard for the two servo setup. And for may folks' needs, it's good enough. However, when pilots like Joe started to push the envelope and do all these high energy, precision maneuvers, they find the controls a bit mushy without a third one .
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Old Jul 04, 2012, 10:47 AM
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Joined Apr 2008
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It's not that the 7955s are unreliable, but some of them jitter without load.

I have a couple 7955s that have been jittering the past few years and have flown the planes anyway. I can't notice if they are still jittering in the air, but it's really annoying on the ground. Added velco felt to the counterweight gaps to add a bit of resistance to reduce the jittering.

Bought a couple savox, they are working great no jittering, will use them more in the future.

I flew someones 104 with only two 7955s on 6 volt per wing a few weeks ago. Seemed fine at low speeds. But I think at higher speeds they were blowing back because the roll rate at higher speeds was about the same as lower speeds and the response seemed mushy.

The owner of the plane, who doesn't 3D big planes much, didn't even notice the blow back it till I told him about it.......
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Last edited by reelcoolfish; Jul 04, 2012 at 10:53 AM.
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Old Jul 04, 2012, 03:01 PM
TEAM CANUCKER HUCKER
ssflylow's Avatar
Canada, AB, Medicine Hat
Joined Sep 2003
1,635 Posts
Quote:
Originally Posted by PowerSlave View Post
I'm starting my build on the 104 and it's time for servos. I have read most of this thread and have a good idea on what servos to go and not to go with. But I want to here more. I would like to here proven setups with many of flights on them at 7.4v

My mind is kinda made up on the rudder - Futaba BLS157HV Digital Brushless High Voltage. But I'm unsure for the rest of the bird.

MKS 767 ????
Hitec 7955 or 7950 ????
Savox 2270 ????
JR DS8911HV ????

Need Help on choosing the right HV servos that will last.

No on the MKS 767, been there done that. Replaced a few with the Savox 2270's and I'm quite pleased.

The Savox 2270's are like a budget Futaba BLS. Best bang for the buck as far as I'm concerned.
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Old Jul 04, 2012, 03:23 PM
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Goleta, CA
Joined Mar 2006
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Originally Posted by ghoffman View Post
Anything other that the 7950 or 7955. The 7950 was a total waste of money, before or after the firmware "upgrade" on the rudder and I gave it away for free. I finally went with the BLS-157HV on the rudder and it is great. Even with 2S Lipo, I am getting blowback with 2 7955's on the ailerons with a 1 3/4 arm length. I normally do not fly fast, but when I did yesterday, the 7955's on the elevator fluttered. If I had the money I would, dump the 7955's and get the BLS-157's all the way around. I hear good things about the Savox 2270's but not first hand. The MKS are to be avoided, there are several threads showing gear issues. BTW, this is after 162 flights.

If you don't mind me asking, what are the issues with the 7950? I currently have 5 of them in my 89 slick and was thinking about using them in the 104 when I save up enough to buy one.

pootman
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Old Jul 04, 2012, 03:45 PM
3D Sunset Flier
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PHX
Joined Jun 2008
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The Pootman is back!

Woohoo

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Old Jul 04, 2012, 04:17 PM
Gaint Scale
PowerSlave's Avatar
United States, KY, Louisville
Joined Dec 2009
187 Posts
Thanks for all the input everyone... Looks like I'm going with the Savox 2270's... I'm hearing very good things about this servo and at 444oz blow back won't be a concern. The Savox servos I got to see today in two 700E Trex's with hundreds of flights on them really help also..They had zero slop and zero quality issues also the guys could not stop bragging about them. Then everyone on here who is running them have had nothing but great things to say... So here it is.

6 - Savox SB-2270SG "Monster Torque" Brushless, Steel Gear, High Voltage, Digital Servo 7.4V: .12 sec/60 & 444.0 oz-in... with two per wing and one per elevator.

1 Futaba BLS157HV Digital Brushless High Voltage Servo 7.4V: 0.12sec/60 & 514oz in... on rudder

1 Savox SB-2272SG "Lightning Speed" Brushless, Metal Gear, High Voltage, Digital Servo 7.4V: .032 sec/60 & 97.2 oz-in.... for throttle.

For a full Brushless High Voltage setup.
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Old Jul 04, 2012, 05:01 PM
Team 3DHS
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San Antonio, TX
Joined Sep 2004
15,632 Posts
Quote:
Originally Posted by pootman View Post
If you don't mind me asking, what are the issues with the 7950? I currently have 5 of them in my 89 slick and was thinking about using them in the 104 when I save up enough to buy one.

pootman
Some people might have some jittering issue with their 7950. if you don't have any issues with yours, they should be fine.
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Old Jul 04, 2012, 05:51 PM
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United States, OH, Youngstown
Joined Jul 2009
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Quote:
Originally Posted by PowerSlave View Post
Thanks for all the input everyone... Looks like I'm going with the Savox 2270's... I'm hearing very good things about this servo and at 444oz blow back won't be a concern. The Savox servos I got to see today in two 700E Trex's with hundreds of flights on them really help also..They had zero slop and zero quality issues also the guys could not stop bragging about them. Then everyone on here who is running them have had nothing but great things to say... So here it is.

6 - Savox SB-2270SG "Monster Torque" Brushless, Steel Gear, High Voltage, Digital Servo 7.4V: .12 sec/60 & 444.0 oz-in... with two per wing and one per elevator.

1 Futaba BLS157HV Digital Brushless High Voltage Servo 7.4V: 0.12sec/60 & 514oz in... on rudder

1 Savox SB-2272SG "Lightning Speed" Brushless, Metal Gear, High Voltage, Digital Servo 7.4V: .032 sec/60 & 97.2 oz-in.... for throttle.

For a full Brushless High Voltage setup.
powerslave that Savox SB-2272SG "Lightning Speed mite be way 2fast for the throttle it could actually lean out the motor .
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Old Jul 04, 2012, 05:56 PM
Gaint Scale
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United States, KY, Louisville
Joined Dec 2009
187 Posts
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Originally Posted by bobby808813 View Post
powerslave that Savox SB-2272SG "Lightning Speed mite be way 2fast for the throttle it could actually lean out the motor .
I was wondering if it was possible to have a servo that was to fast... Thanks for that info.
What speed is good for throttle?
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Old Jul 04, 2012, 05:57 PM
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Goleta, CA
Joined Mar 2006
721 Posts
Cool, thanks bonedoc. I was a little worried about buying all new servos. :-)
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Old Jul 04, 2012, 06:01 PM
Gaint Scale
PowerSlave's Avatar
United States, KY, Louisville
Joined Dec 2009
187 Posts
Savox has two more Brushless, Metal Gear, High Voltage, Digital Servo with speeds of .06 and .08
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Old Jul 04, 2012, 07:50 PM
↓↘→ + (punch)
theKM's Avatar
central PA.
Joined Sep 2004
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Quote:
Originally Posted by PowerSlave View Post
I was wondering if it was possible to have a servo that was to fast... Thanks for that info.
What speed is good for throttle?
another 2270 or a 1268 would be good choices for HV... Hitec 5665MH is a good HV throttle servo choice to save a few dollars.
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