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Home✈️Aircraft🚁HelicopterBergen R/C Helicopters › Servo recommendations...
04-10-2013 03:59 AM  7 years ago
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coop

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Bainbridge, NY

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Servo recommendations...
Hi Guys....I've been out of the hobby for a few years,(8), I'm going to get back in this year with a Bergen Gasser, I currently have a couple Bergen 60's, but this will be my first gasser. My question is, what servos to use on cyclic, I am going to be using a JR 9503 and a 921x receiver. I'm not a 3D flier, an occasional loop and roll, thats about as wild as I get. What are you guys (and gals) using?

Coop
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04-10-2013 04:25 AM  7 years ago
geomecc

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Long Island ,NY

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im rebuilding a bergen gasser and i updated my servos with mks ds1210 on cyclic savox sh1290 on tail and savox sg0351 on throttleR I P Roman Jr. Team SRW EFC
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04-10-2013 11:56 AM  7 years ago
coop

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Bainbridge, NY

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Thanks for the reply, I never heard of that brand, hoping to stay with JR servos. I have 9206 servos on the cyclic on my 60's. Are they enough for a gasser, I'm thinking they are, same mechanics as the 60, different engine...

Coop
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04-10-2013 01:04 PM  7 years ago
Chris Bergen

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cassopolis, MI USA

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The latest and greatest JR servos would be the 8717's and 8711's.

The 8717's are the higher speed, with the 8711's being higher torque.

Either way you decide, they are both faster and stringer than what you've used in the past!!

You can also get them in HV versions and run them directly from a 2 cell lipo at 7.4 volts.
Chris D. Bergen
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04-10-2013 01:08 PM  7 years ago
coop

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Bainbridge, NY

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Thanks Chris, that's what i was looking for...

Coop
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04-10-2013 06:20 PM  7 years ago
Chris Bergen

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cassopolis, MI USA

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Good to see you back Coop!! Chris D. Bergen
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05-20-2013 03:41 PM  7 years ago
coop

rrApprentice

Bainbridge, NY

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Hi Guys... I've been looking at cyclic servos, and I found a new set of Hitec HS-5645 MG this weekend for a good price. They seem like pretty good servos, I realize they aren't high end servos, but neither is my flying I don't do any 3D, mostly just smooth flying around, an occasional loop, roll, stall turn, etc. Anybody have any experiance with these servos, for my use, they seem like they will work fine, reliability is my only concern. The specs are: .23 sec, 143 oz in torque @4.8 volts, metel gears, dual ball bearings. They are digital and also programmable,( if you have the programmer).

Coop
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05-20-2013 04:46 PM  7 years ago
Chris Bergen

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cassopolis, MI USA

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ummm.... Not what I would recommend.

Past experience says that hitec's don't last long in a vibrating environment, such as found in a heli, and especially a gas heli.

Maybe you'll be the one adding to our experience...
Chris D. Bergen
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05-20-2013 04:58 PM  7 years ago
coop

rrApprentice

Bainbridge, NY

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Chris...Not sure I want to be the one "adding to our experiance ". It says on the box they are suitable for helicopter use, but I always take manufactures ratings with a grain of salt. I did buy them, maybe they would be put to better use in a plank. Thanks for the reply.

Coop
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05-20-2013 05:51 PM  7 years ago
RogerRabbit62

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Thuerigen germany

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Vibration proof and absolute reliable

Futaba BLS451 or BLS452 and BLS251 or BLS256HV for tail
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05-20-2013 06:07 PM  7 years ago
Santiago P

rrProfessor

Dayton

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Hitec HS-5645 MG

They are airplane servos, good torque, but centering and deadband are horrible for helicopters.

the S9206 you own are better servos.

S
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05-21-2013 01:16 PM  7 years ago
coop

rrApprentice

Bainbridge, NY

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Thanks guys, I'll save them for a plank...

Coop
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05-21-2013 01:27 PM  7 years ago
coop

rrApprentice

Bainbridge, NY

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I read that the Futaba BLS452's are for use with NiCd power only? I'm currently running 4.8 volt NiCd packs, but have been thinking about going to NiMh.

Coop
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05-21-2013 02:25 PM  7 years ago
Santiago P

rrProfessor

Dayton

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Most if not all BLS servos can run perfectly on Nimh (except BLS251 <5.7v) and even on LiFe batteries, no regulator.

I know of many folks using BLS451 on straight LiPo working well too. For some reason, the servo is rated 7.4v in Europe, but not in the US.

I would be a little leary of using Nimh on any high power servo these days unless you are familiar with high power, low IR Nimhs, which weight a ton.

Whichever high power servo you choose, you must feed them plenty of Amps to avoid any control issues. Hitec, MKS, JRs, Savox, are all good, but Futaba BLS required less power than all others.

Good luck hunting.

Santiago
Team Minicopter - PeakAircraft.com
FUTABA.USA - Team Kontronik - Scorpion Motors-
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05-21-2013 02:51 PM  7 years ago
RogerRabbit62

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Thuerigen germany

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I run the BLS452 and BLS451 on 4 NiMH, 5 NiMH and 2s lipo straight in 3 nitro birds since dozends of gallons without issues.
The 4 and 5 NIMH run the BLS251 WITHOUT regulator on tail and the 2s has the BLS256HV on tail.

Power consumption is approx 380-450mAH / 12 minute soft 3d.

Absolute without Problem.

In the same birds there where 9001 (the 700N) 9206 (the 710N) and 9206/9202 in the 800 mechanical mixed before.

Tail was 401/9250 and 401/9253

Everything is run on direct high current Connections from MPX which are very reliable without any Switch and 3 times connected to HC3SX / 7008sb:

http://www.powerbox-systems.de/d/ko...ktion/start.php

Very reliable Setup.
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