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Fast Lad Performance . Ace Hobby . Esprit Model

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Century Hawk - 50NX - Raven - Predator > S9253 causes me to crash
 
 
the Wasp
rrProfessor
Location: Vt

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Futaba, I want my blades and parts replaced !!

I flew and the tail worked fantastic !! held good and straight in the wind and respond well to my commands !! so I landed to adjust my curves (1 click each), restarted my motor (without turning off the Tx & Rx) after it stalled on spool-up, I lifted-off again after restarting and spooling-up and the tail still held good in a low hover of 4 ft and the tail respond good to my commands, then I got her up about 7 or 8 ft and then the tail would not respond to my commands (I lost total control of the tail), I could not hold it, so into the high grass she went (to low of a head speed for an auto),,, so after the crash I checked her over and I found the tail servo produces No power to it's arm, I put my finger on the servo arm and move the rudder stick and the arm will not move at all, I only get an electronic sound/squeal, BUT the servo gears are still good,,,

to the heli it's self there was not much damage, maybe about $60, but my new $85 blades had less than 2 gallons on them, so a total of $145 maybe plus servo,,, what makes me mad is this servo really doesn't have that much time on it at all, only 4 cases of fuel on it,,, I feel Futaba should replace my blades and parts, but I'm sure that wont happen !!

for my shadow and other 2,3 hijackers, she went in over on its side and into the tall grass, when the blades hit the ground the skids and tail went up so the tail and rudder servo did not get hit, only the head and blades hit the ground !! (in fact the flybar did not bend), and can you imagine~ even the main gear is still intact LOL, I lost total control over the tail "it was the servo's fault !!"


Jim
12-18-2004 Over year old.
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beavis1
Key Veteran
Location: New York state

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Same Servo problem with a 9253

Jim,

I lost a tail servo exactly the same last season. Flying fine then the tail hold got slightly soft feeling and wham no tail. Luckily I was able to auto with no damage.

The servo was locked up. Gears checked out fine the motor was locked up tight ??

It was within warranty so I sent it in and got a brandy new one returned so it was past fixing I gather.

2 9252 servos failed last year and a 9253.

Good warranty service and lost of luck to not have had one crash out of it. Luckey breaks

I saw a few 9252 servos fail at shows as well and beasts 9251 actually melt when I was spoting for him....

We are paying a healthy sum for these products. Wish they were bullet proof but no matter what we do some things just happen unfortunatly.....


Hope you get her back together soon

Century Heli Rep. Holo foil power !!! Magnum fuel
12-19-2004 Over year old.
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the Wasp
rrProfessor
Location: Vt

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thanks Beavis, what a pi&&er, I don't find this funny at all !!, that's a lot of money, I can't find my receipt for it so I can't send it in, but with what you said I will buy JR this time.


Jim
12-19-2004 Over year old.
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dnts
Veteran
Location: Israel

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Jim,
It's not like JR don't have their share of problems... I always say it's better to use something you know the limitations (and problems) of than go for completely new (with new problems) stuff. There are numerous 9253 in service (I think it's the most common tail servo out there). Futaba updated it with 9254, probably because they had an option to do some cost reduction and update a few problematic issues. I would go for that servo and put the 9253 on the throttle. As for 9252 failing - again, one of the more common all around digital servos. I wouldn't like to guess exact numbers but (knock on wood) if they had that many problems, the word would have already been out. I see lots of people flying them hard on 91 machines as eCCPM or cyclic servos and no real big issues. There are lemons here and there but that can happen with just about any component of a high performance heli.
Hope you get her sorted out soon and be back in the air.
Nir
12-19-2004 Over year old.
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beavis1
Key Veteran
Location: New York state

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right on

DNTS,
Right on the money. Airtronics JR I know a team mate lost a predator on a airtronics digital and another a gasser on a JR digital. They all have failures.

The only common thing with Futaba last summer is they seemed to have a string of very short time failures. Bad lot ?? but it was fairly well talked about.

They are electronics If they are run within specs they should not fail at least within short term. Probably not made to industrial standards or the materials. So far there are just no bullet proof ones.

Just a shame they fail but it seems it is part of the hobby and if you can't accept it then you eventually be dissapointed. ( your time will come)

Century Heli Rep. Holo foil power !!! Magnum fuel
12-19-2004 Over year old.
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the Wasp
rrProfessor
Location: Vt

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well, I was so mad I forgot, this was my second S9253 to fail !!, my first one slowly went bad, it wouldn't hold in backwards flight or in the wind, as soon as I replaced it with this last servo the tail would hold again.

Jim
12-19-2004 Over year old.
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nicco
Veteran
Location: Sweden

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Isn't a 9253 to weak (little torque) for a gasser?

everyone recommended a 9254 when I was asking...

I suggest you buy/uppgrade to a 9254 instead.

/N
12-20-2004 Over year old.
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HeliAdict
Senior Heliman
Location: Dallas, Tx

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Wasp

I have to differ with you on the servo causing you to crash. Failures of all types happen with any machine. It was your in-ability to cope with the situation at hand that caused the crash. It seems like most, you would rather blame some one else for the lack of practice and ability on your part.
So as much as I dislike Futaba I would have to side with them this time.
I have had many servo failures and most I was able to save, some I didn't. Can't blame the manufacturer. Mechanical things break, sometimes sooner than later.
12-20-2004 Over year old.
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the Wasp
rrProfessor
Location: Vt

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I have seen the 401 and S9253 on a turbine heli, but yes 9254 would be better, it would hold better in fast backwards flight


Jim
12-20-2004 Over year old.
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the Wasp
rrProfessor
Location: Vt

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HeliAdict,,, I don't think your are getting the big photo here !!, the servo would NOT controll the tail, so my heli started to piro, and I could not stop the piro because the servo would not respond !!

how can I control the heli if the servo wont respond


Jim
12-20-2004 Over year old.
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HeliAdict
Senior Heliman
Location: Dallas, Tx

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Fly mostly Milles now days, so yes I do get the picture. I have had four tail servos go bad on one machine. (Driven tail) Saved three of them and not from a two foot hover. All four servos when sent for repair had the motor bad in them. The little 560 just worked them to death. I didn't ask the manufacturer to replace my parts for the one I was unable to save. You should learn to piro in control, then when the tail quits (and it will at sometime again) you wil have a better chance of recovery.
12-20-2004 Over year old.
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the Wasp
rrProfessor
Location: Vt

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sorry I can't agree,,, this servo failed in only 4 cases of fuel,,, Futaba should stand behind their products, no servo should fail within 4 cases of fuel,,, and there has been cases where JR has stood behind their servo's and replaced helis.

Jim
12-20-2004 Over year old.
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HeliAdict
Senior Heliman
Location: Dallas, Tx

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Or you should learn to handle the situation better. There is no substitute for practice. Who is to say that there is not something wrong in your setup that is not accelerating the failure of the servo. I know we are all engineering experts. In my case i was pushing the servos harder than they could handle. Backed off on some settings and problem solved. Something to consider.
Can you imagine the cost of products if a manufacturer has to assume the liability for our in-ability..

Robin
12-20-2004 Over year old.
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HeliAdict
Senior Heliman
Location: Dallas, Tx

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Oh, maybe a non driven tail till the ability is attained to do piro auto's.
12-20-2004 Over year old.
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PistaJ
Heliman
Location: Prague

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S9254 would be the same

Hi I had the same problem with the S 9254
It is OK for some time, it works fine when testing on the ground, but at some point in flight, it stops working and there is the point, when the pilot starts saving the heli. I have had it 3 times - becoming good at it.
06-27-2009 07:39 AM
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Mutt
Key Veteran
Location: M ca usa

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you do realize this thread is 5 years old?
06-27-2009 01:14 PM
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beavis1
Key Veteran
Location: New York state

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HAHA

Now that is a bump up from 5 years ago LOL

Century Heli Rep. Holo foil power !!! Magnum fuel
06-27-2009 01:51 PM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

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at least he is using the search feature

Shawn
Team Leisure-Tech
Team HelixRC
06-27-2009 09:58 PM
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what_the_helli
Key Veteran
Location: cookeville, tn USA

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Quote 
at least he is using the search feature

yes, good job looking up the info you need

I put the fun in dysFUNctional :)
Team KBDD & RcHeliWorkz.com
06-28-2009 12:33 AM
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obin
Senior Heliman
Location: wilmington nc

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mine started to go out, it would loose the tail for a moment, replaced entire servo and gyro (401) all fine now...

bad servos I think.
08-22-2009 02:46 AM
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Century Hawk - 50NX - Raven - Predator > S9253 causes me to crash
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