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Old 10-19-2011, 01:54 AM
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Bluebird Servos

I was just wondering if anyone here has tried the Bluebird Brushless servos and your thoughts on them? The brushless ones that I'm talking about would be the bls-2209 and the bls-3114 servos. Just want to hear about those servos because they look very promising and I'm looking for some real world feedback on them and what is the service from Bluebird like?

Thanks,
Philip Webb
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Old 03-26-2013, 01:13 AM
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I have been flying the 2209's for over a year now in a 50 cc class edge and am totally pleased with their performance. I have Put some hard stress maneuvers on them and the response is lightning fast. No gear wear or slop. Still tight as the day I opened their box. Center perfectly and have a 25 tooth spline just like futaba. I am near completion of a 104 inch extreme flight extra 300 and using the 3114's all around. So far I think they match up pretty close to JR and Futaba quality and performance. At half the cost of high end servos I think these are no brainers for the 3D / High performance arena.
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Old 03-26-2013, 05:09 AM
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I've wondered about these servos also. Tell me why you decided on the 3114 over the 31A? Just wondering. Both have the same spec's while the 31A has the aluminum case and is $5 cheaper at Hobby King, doesn't make sense?
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Old 03-26-2013, 06:45 AM
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The 3114's are just a little lighter at 2.33oz verse 2.6oz for the 31A's. Makes a difference when you consider 9 servos in a 100cc class airframe. I also found the gear train to be very smooth and quiet
compared to Futaba 9157's. Have not seen Futaba BLS 157's in operation and at $200+ with shipping doubt that I will. Check out the Blue Bird web site(bluebirdmodel.com). The CEO of the company has been a diehard pattern boy since the 70's. This servo brand has been out there for some time. They use Japanese parts such as smt boards, motors etc.. and are manufactured in Tiwan (same as Futaba).
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Old 03-26-2013, 07:27 AM
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FYI

The website is somewhat difficult to navigate but I wanted to let you know that blue bird offers wide voltage servos like JR. The bad boy BLS 3510 is 496oz 7.2v, 426oz 6.0, 328oz 4.8v. This is off the top
so check the site... Hobby King does not carry these yet but I am bugging the crap out of em' until they do!!!
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Old 03-27-2013, 05:09 AM
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Ok so it was a weight thing, that's good to know. Please post your results of the 3114's.
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Old 04-02-2013, 11:30 AM
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I have set up all the servos (BLS 3114's) in the extreme flight 104 inch extra and found that this servo is extremely high quality. Aluminum servo arms such as the hangar 9 and SWB knock off that hobby king sells slide on to the output shaft with no binding. All 9 servos allowed my servo arms to align within 4ums of each other. I have not ever seen this in any other servo I have ever used! Only small increments of sub-trim needed to get exacting geometry for dual servo rudder pull pull by means of channel mixing 4 and 7(futaba). I was so impressed that I grouped the two aileron servos by means of mechanical linkage alone and see no issues so far but did have some noise at the most extreme throw of 140%(futaba). All servos go dead silent when returning to neutral and exhibit slight digital noise when traveling between the 140% values. I can hardly wait to see how they perform in the air!
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Old 04-03-2013, 05:16 AM
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Thanks for the update. Wonder if any will be on display at Toledo?
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Old 04-04-2013, 12:49 PM
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I don't know if other vendors in the US would carry this servo or not. It seems to me the asking price would be competitive to futaba and hitec somewhere in the 150 dollar range. As it stands now 90 bucks is a steal for these servos at HK. I have stocked up on the 2209's and would like to have a stock of the 3114's. The all aluminum case versions are becoming popular with the Buggy Dudes. When Hobbico acquired Futaba; prices for premium quality products have gone through the stratosphere! JR right with them too and HITEC is trending this way also when it comes to servos.
FYI I checked with HK and the MSRP on the 2209's and 3114's is $180.
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Old 05-08-2013, 10:21 PM
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I have just looked at the BLS-3114 servo.....
I saw that someone tested these and they were putting out around 12kg torque???

49D....
Have you tested these to verify the output?? Like on a fish scale???
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Old 05-11-2013, 08:40 PM
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Quote:
Originally Posted by Jkoch713 View Post
I have just looked at the BLS-3114 servo.....
I saw that someone tested these and they were putting out around 12kg torque???

49D....
Have you tested these to verify the output?? Like on a fish scale???
You got a link?
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Old 05-14-2013, 02:39 AM
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I made up a rig to test the pushing pressure with a 1 inch servo arm. I used a 25 lb postal scale and the bls 2209 measured 18 lbs 9oz of force . The 3114 pushed the scale over its limit and could not get a reading. This is not a great way to measure torque but it gives good indication how powerful the servos are. I have not seen any tests of these servos but what I can say from using them in my 50cc class and 100cc class air frames is they absolutely perform extremely well. I have some other coreless versions such as the bms 1715 and 1412's and the only problem I had with them is one of six (used on elevator of 50cc yak54) servos started jittering after 20 flights. I contacted blue bird via e-mail and they have me sending the servo to them for warranty repair. The 27 bucks shipping to Taiwan is the only draw back since there are no US dealers of this product.
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Old 06-28-2013, 02:50 PM
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Bought a few of the bls 31a servo,s. with the hope they will power a new breed 60cc size airframe with extra large control surfaces, and possibly be useable in the future on a 100cc bird. Struggled to find out any real info other than hearsay or manufacturers claims so thought I would post some here.

Not gonni sell them or big them up to others as I only got them this morning, but first impressions are good. Nice strong case, tight gears, and no jitters on run up or centering noted. Rigged one up to test torque as it has been suggested the manufacturers figures are optomistic, also a good time to see just how strong the gear train is. The test is far from controlled with lots of room for error but gave me a good indication of strength of servo.

On life battery under load at 6.4 volts and on a 2.7cm servo arm this servo produced 9.2 kg of torque.
If my maths are right that equates to 24.8kg/cm or 344 oz/in. As this servo is HV I would expect even better performance with a 2s lipo at 7.4 volts nominal. This is indeed a very powerfull servo.

Bluebird Bls 31a (1 min 7 sec)
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Old 06-28-2013, 03:05 PM
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25 cm is as advertised. Thanks for posting.
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Old 06-28-2013, 05:24 PM
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+1 Tony and I have been dealing with them directly on some A206 and BMS 1715's. Gina Wang has been more than accommodating in trying to get warranty performance issues resolved through the mail in that there are no US Dealers yet.
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