RunRyder RC
WATCH
 1 page 482 views POST REPLY
HomeAircraftHelicopterHelicopter Main Discussion › What is the euqivalent of a Futaba 9254 ?
10-15-2018 11:48 AM  36 days agoPost 1
Infarcted

rrApprentice

downunder

My Posts: All  Forum  Topic

Guys,

Just realised they don't make the Futaba 9254 rudder servo anymore. Can someone point me out what's the equivalent one of say Hitec or JR which is compatible with a 401 gyro and is 4.8 to 6.0 volt , ie not the high voltage brushless ones ?

PM  EMAIL  Attn:RR  Quote
10-15-2018 12:15 PM  36 days agoPost 2
Dan Minick

rrKey Veteran

Columbus, WI

My Posts: All  Forum  Topic

The Jr DS8900G is almost identical. Bit faster, even. I might even have one to sell you for cheap if I remember correctly!

Team Synergy, Team FBL Rotors-------if its not broke...it will be!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-15-2018 03:11 PM  36 days agoPost 3
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

Infarcted
Just realised they don't make the Futaba 9254 rudder servo anymore.
I question the original assertion. See links below.

The 9254 has never been my favorite servo. I have found it to be an acceptable servo but fragile. It is sturdy enough. Speed and torque are acquitted. At $110 the price is palatable. Everything about it is just sorta blah.

If I were looking for a new $100 tail servo I might try the ProModeler tail servo. Specs are good. It's brushless. It's $80. I need to be clear, I don't personally own one; but, other speak highly of them. http://www.promodeler.com/DS120BLHV

I suppose I should ask, what gyro are you using? Can you use a 760us servo?

https://www.amainhobbies.com/futaba...futm0224/p12579

https://www.futabarc.com/servos/digital.html

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-15-2018 03:21 PM  36 days agoPost 4
JLF92677

rrApprentice

Southern California

My Posts: All  Forum  Topic

Futaba BLS254 would work and at a good price:

https://www.ebay.com/itm/2516712488...1d76198fff96489

PM  EMAIL  GALLERY  Attn:RR  Quote
10-15-2018 03:50 PM  36 days agoPost 5
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

I'm sorry. Forget my ProModeler recommendation. I see you posted what gyro you are using. My excuse is that my wife was banging on about the seating chart for my son's wedding and my simple post took over 45 minutes to construct. In that time forgot what you had originally posted.

I stand by my comments on the 9254. They are just meh - but they appear to be available you have to have one.

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-15-2018 08:08 PM  36 days agoPost 6
dialarotor

rrElite Veteran

Traverse City, Michigan

My Posts: All  Forum  Topic

I have been replacing my Futaba tail servos with this model from Savox

https://www.ebay.com/itm/Savox-1290...f class=sml>f:0

Align DS610,620,650 are good choices too, made by Savox.

RapRexSynLogo Pilot

PM  EMAIL  GALLERY  Attn:RR  Quote
10-15-2018 08:28 PM  36 days agoPost 7
ICUR1-2

rrElite Veteran

Ottawa, Ontario

My Posts: All  Forum  Topic

Ds620 or ds650 is the ALIGN equivalent.
If you can find them

Savox would be next

spending time, paying attention

PM  EMAIL  GALLERY  Attn:RR  Quote
10-15-2018 10:53 PM  35 days agoPost 8
Infarcted

rrApprentice

downunder

My Posts: All  Forum  Topic

Thank you all for your posts. I always thought the newer brushless servos were high voltage. I am still using old equipment. i will look into all the previous suggestions .

PM  EMAIL  Attn:RR  Quote
10-16-2018 11:48 AM  35 days agoPost 9
onebigjunker

rrKey Veteran

Wellsville, Ks

My Posts: All  Forum  Topic

I will sell you a 601 or 611, so you can use the newer type servo with it?

work hard, play even harder!!!!
Team Empire Hobby/GAUI USA

PM  EMAIL  GALLERY  Attn:RR  Quote
10-16-2018 01:19 PM  35 days agoPost 10
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

Align DS655. You can get the JR8900G cheap here in the UK though which would be my choice. Which ever you choose, don't run it above 5v.

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-16-2018 10:12 PM  34 days agoPost 11
datidun

rrElite Veteran

N Ireland

My Posts: All  Forum  Topic

Align ds655 is rated for 6v,going over that should not be a problem,been running mine for over 5 years from a Life 6.6v,that includes the Savox 1290.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-17-2018 09:28 AM  34 days agoPost 12
dialarotor

rrElite Veteran

Traverse City, Michigan

My Posts: All  Forum  Topic

update your battery power system and skip regulators
most all the servos above will operate on LiFe 6.6v without problems.
Came across this, freshen up all my heli battery packs for a fair price.
https://www.ebay.com/itm/5PCS-2200m...353.m1438.l2649
The Align & Savox servos are happy and so are my Futaba servos even the 9253 & 9254 tail servos. Lots of capacity for my 50 & 90 size helis.

RapRexSynLogo Pilot

PM  EMAIL  GALLERY  Attn:RR  Quote
10-17-2018 11:29 AM  34 days agoPost 13
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

Be careful with that, I would only recommend running a tail servo at 6v+ IF:

1. You are running it at lower than 333Hz. (you could get away with 333Hz if the below are met).
2. It's an electric heli.
3. It's smaller than 700 size.
4. It's vibration free.
5. The tail pitch mechanics are totally free.
6. The servo arm length is optimal (gives at least 90 degrees movement from limit to limit).
7. The tail gain is optimal (no wag in very fast forward and backward flight).
8. You are only hovering or slow forward flight at a relatively low rpm.

It is just far safer to step a tail servo down to 5v, the performance is virtually the same. This is the whole reason why people see the 9254 as 'fragile'.

A tail servo failure in flight results in a fairly catastrophic crash unless you are very lucky. It's just not worth it.

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-17-2018 11:56 AM  34 days agoPost 14
datidun

rrElite Veteran

N Ireland

My Posts: All  Forum  Topic

Back in the day a 4 cell nimh pack fully charged is around 6v to 5.8v,under load around 5.5v, no step down was needed either on any Futaba 9254, although I would not run a 9254 of a Life 6.6 without a step down, I ran my 9254 at 5.7v max.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-17-2018 11:57 AM  34 days agoPost 15
DemetriusUSN

rrVeteran

Virginia Beach, Va USA

My Posts: All  Forum  Topic

Wjvail...I’ve had the promodeler servos and they work flawlessly, fast, center well and on 5v up to 7.2v they work very well!!

Minicopter Diabolo 800, Minicopter Triabolo 700, Minicopter Diabolo 700, Minicopter Diabolo 600, Minicopter Diabolo 550, Goblin 770

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-17-2018 01:15 PM  34 days agoPost 16
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

The problem came when people started running the 9254 on regulated 6v. A 4.8v Ni-Cd pack would drop very quickly to 5v and after a flight or 2 would be down to maybe 4.5v and lower under load.

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-17-2018 02:44 PM  34 days agoPost 17
datidun

rrElite Veteran

N Ireland

My Posts: All  Forum  Topic

If it was lower than 4.5v, the heli would most probably go in, 1.1 volts per cell on a nimh/nicad 4 cell pack is classified as flat, coming out at 4.4 volts.Life 6.6v pack under load is around 6.3 to 6.4 volts, plenty of room for a 6v rated servo.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-17-2018 03:16 PM  34 days agoPost 18
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

Brown outs don't usually occur till under 3.5v. 4.4v on a sitting 4 cell Ni-Mh would be near flat but we are talking under load. The problem with regulated 6v is it won't go much under 6v the whole time. Trust me there is a big difference between a 4.8v Ni-Mh pack and 6v regulated, as I say as much as 1.5v difference which doesn't sound like much but that is 33.3% more voltage!

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 482 views POST REPLY
HomeAircraftHelicopterHelicopter Main Discussion › What is the euqivalent of a Futaba 9254 ?
 Print TOPIC  Make Suggestion 

 7  Topic Subscribe

Tuesday, November 20 - 7:47 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online