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SteveH

Bluebird servos failures

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SteveH

Has anyone else had problems with Bluebird servos?

Recently I have fitted out 2 expensive F5J type soarers with Bluebird 105HV servos.

I have had 3 servos fail on flaps and 2 fail directly from the supplier before installing them in a glider.

Reading the recent reviews on the suppliers website I am not the only person to have experienced problems with these servos.

The latest failure was a surprise as the servo lasted for 6  X 10 minute flights before completely burning out.

My advice to anyone is that these servos are definitely not suitable for use in F5J type models especially on flaps.

Needless to say I am now removing these servos and replacing them with more reliable alternatives.

 

image.jpeg

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wookman

I hope it didn't cost you a model too. It is a real shame that manufacturers put such rubbish into the market. 

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satinet

If this thread was about mks it would get renoved on the forum rules about airing dirty laundry.

Let's apply the rules evenly....

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satinet

The 'mks rule':

This is not the place to settle a commercial disagreement for custom development or to be a 'wall of shame'. Any posts deemed to be of this nature will be removed. Settle your disputes in private please, and away from this forum.

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EssexBOF
14 hours ago, SteveH said:

Has anyone else had problems with Bluebird servos?

Recently I have fitted out 2 expensive F5J type soarers with Bluebird 105HV servos.

I have had 3 servos fail on flaps and 2 fail directly from the supplier before installing them in a glider.

Reading the recent reviews on the suppliers website I am not the only person to have experienced problems with these servos.

The latest failure was a surprise as the servo lasted for 6  X 10 minute flights before completely burning out.

My advice to anyone is that these servos are definitely not suitable for use in F5J type models especially on flaps.

Needless to say I am now removing these servos and replacing them with more reliable alternatives.

 

image.jpeg

Yo do not say what voltage you are putting through the servos. I use a separate U Bec running off the Li Po that cuts the Volts to5 never had a problem.

Have now used Turnigy 777 or 712 for flaps and now never use anything else, as MKS have failed in the past(6125 mini)

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SteveH

I also use a separate UBEC. Mine is running at 7.4 V.

I was always a little concerned about running these servos at 5V  as they are rated at 6 to 8.4 V.

 

 

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EssexBOF

Interestingly that the MKS equivalent 6100, they look the same to me, only show the operating voltage as 5 volts, but as you say the Bluebird goes up to 8.4. I would err to the lower figure. Would not think that you need that high figure to power an F5j model.

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SteveH

I also have some MKS 6100 servos and have found them to be quite good.

The Bluebird servos are definitely not an equivalent in terms of quality - just cheap. As I mentioned in a previous post I am not the only person to have suffered problems with these servos. Take a look at the reviews.

7.4 V was chosen to be in the middle of the manufacturers spec.

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SteveH
19 hours ago, wookman said:

I hope it didn't cost you a model too. It is a real shame that manufacturers put such rubbish into the market. 

Sorry Wookman - missed you post.

Luckily It did not cost me a model   -   but the landing was interesting!!

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wookman

That is something to be thankful for, relatively easy to sort out a change of undies. Seriously though a burn out like that could have taken out a bec or shorted a lipo, that would put a different complexion on things!

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EssexBOF

Reading the reviews as you suggested, there would appear to be 4 bad reviews out of 26 say 15%

Would never use them on Flaps, as there are better options out there.

Have used the small 101 Bluebird servo, as it is small enough to fit in limited space, with no problems. Used to use Hyperion Ds09 amd but they are no longer available, which is a shame. But even had one of them fail on an aileron some 5 years ago. And the Hyperion DS095's were pretty grim and NOT cheap. Most people I know like myself gave up with them due to stripped gears when used on Flaps.

As I said have used Turnigy 777 or 712 Wing servo's for all my moulded models for flaps and Hitec Hb5065's for ailerons. regard MKS as being overpriced.

As a friend told me who goes to China on business they have whole towns set up to make one item, from electrical to household items, so a most of these item are manufactured in the same factory and re badged.

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SteveH

In fact if you look at the reviews in detail there are 7 complaints from 26 reviews which is almost 27%.

Even more concerning is that the later reviews are worse than the earlier ones possibly indicating a  reduction in quality control.

I agree with your comments on Turnigy servos - they develop some wear in the gearboxes over time but very reliable.

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Mikeb52

We are now in an age of expensive moulded and non moulded airframes, mostly ultra reliable radio control systems. Yet the last link in the chain seems to be the weakest. Bad install apart, why is this? With my little knowledge of electronics, I would have thought that servos would be one of the easiest items to get right. Or are the manufacturers using this as a cash cow? 

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wookman
3 hours ago, SteveH said:

I agree with your comments on Turnigy servos - they develop some wear in the gearboxes over time but very reliable.

On the positive side at least the Turnigy electronics last long enough for mechanical wear to become an issue!

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SteveH
20 hours ago, Mikeb52 said:

We are now in an age of expensive moulded and non moulded airframes, mostly ultra reliable radio control systems. Yet the last link in the chain seems to be the weakest. Bad install apart, why is this? With my little knowledge of electronics, I would have thought that servos would be one of the easiest items to get right. Or are the manufacturers using this as a cash cow? 

What is even more annoying is the hype from the suppliers making unsubstantiated and inaccurate claims.

when I complained I was told that I was the only person who was having problems.

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pete beadle

Hi SteveH

Oddly, when I complained to BT two days ago I was told mine was the only complaint they had received! Out of all the millions that use BT, mine was the only complaint?........ I DON'T THINK SO

Trouble was,  I managed to trick the young lady who was "helping" me, in the Customer Service Department into revealing that she was speaking to me from India.....How's that for corporate penny-pinching?

Many years ago, a good friend advised me to NEVER ask for the Customer Service Department if I had a complaint, he said, ask for the SALES department and get them to transfer me to the Customer Services Department, the supplier  will think that this is an INTERNAL call from Sales and will answer it promptly....... this usually works a treat!

The UK has the worst reputation in Europe regarding complaints and/or after sales service - in China they get round it by either not having a Quality Control Department at all or blaming the UK wholesaler.....and then, if you manage to agree with them that they should replace the faulty item FOC, it's 90% certain to be replaced by another item with the identical fault...... CAVEAT EMPTOR chaps

Pete

BARCS1702

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Darren_O

Had a few BB servos fail in a very short time, I've since switched to using Emax on a lot of models and even the £3.50 metal geared ones are quick strong and take a beating.   

I don't see Emax mentioned much, quite surprising as modellers tend to be a thrifty lot. They perform way above their price. 

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SteveH

Another bad review has cropped up on the suppliers website.

Seems a trend is developing.

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Nick Jackson

I've run a number for quite a while at 7.0V and none has burned out.  But a different recent problem: several which I'm having to remove because they refuse to centre properly (and I'm not hyper-fussy - they keep drifting off by several mm..)

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Scram
On ‎29‎/‎05‎/‎2018 at 20:14, Darren_O said:

Had a few BB servos fail in a very short time, I've since switched to using Emax on a lot of models and even the £3.50 metal geared ones are quick strong and take a beating.   

I don't see Emax mentioned much, quite surprising as modellers tend to be a thrifty lot. They perform way above their price. 

I've used Emax servos without problem too.

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