Blue Bird BMS-125WV+ Servo Specifications | ||
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Body dimensions | 23.2 mm wide x 10.0 mm thick x 23.0 mm high | 0.91" wide x 0.39" thick x 0.91" high |
Max dimensions | 32.0 mm wide x 10.0 mm thick x 25.0 mm high | 1.26" wide x 0.39" thick x 0.98" high |
Stall torque (3.7V) | 3.6 Kg.cm | 50 oz.in |
Stall torque (6V) | 5.5 Kg.cm | 76 oz.in |
Stall torque (8.4V) | 7.1 Kg.cm | 99 oz.in |
Weight | 11.3 g | 0.40 oz |
Lead length | 16 cm | 6.3 in |
Operating speed (3.7V) | 0.2 sec/60° | |
Operating speed (6V) | 0.13 sec/60° | |
Operating speed (8.4V) | 0.09 sec/60° | |
Operating voltage | 3.5V to 8.4V | |
Operating temperature | 0 to 40 °C | |
Bearings | 2 ball bearings | |
Gear material | Metal alloy | |
Case material | Nylon | |
Motor type | Coreless DC motor | |
Working frequency | 250 Hz | |
Dead band/resolution | 2 µs | |
Pulse width for ± 60º | (L) 900 µs - (0°) 1520 µs- (R) 2100 µs | |
Digital | Yes | |
Programmable | No | |
Position feedback | Potentiometer | |
Supplied accessories | 2 plastic output arms, 1 arm retaining screw, 4 mounting screws, Blue Bird sticker | |
Optional accessories | Ply Frame for Blue Bird BMS-125, Integrated Drive System/Mono for the Blue Bird BMS-125WV, Frame with bearing for the Blue Bird BMS-125WV |
Review by: Sir Bob
Nice little servoI brought this servo as a replacement for the previous BMS 105 servo. That got wet and basically stopped working. (Don’t ask)!
This replacement seems more precise than the 105 so that’s all good. I’ll not to get it wet.
Good value for the performance. Ideal for small slope soarers.
Review by: andy
great servo for a budgetthese servos are great value and are performing well will buy again.
Review by: andy
great servo for a budgetthese servos are great value and are performing well will buy again.
Review by: Jason
Great Servo's, Great companyHad many servo's fail over the years, I now only use these servo's they are bullet proof and truly do what they say on the tin. You pay for what you get, and honestly these are as comparable to the really top end expensive servo's I've brought in the past.
Review by: Mike
Powerful servo for the sizeI've used them for my F5J Inside glider. I get great control and responsiveness with more than enough power for the job. Quick deliver as always with Hyperflight. Will buy for my next model
Review by: Anonymous
Arrived on time, good service as always
Review by: Neville
Really like themI really like the Bluebird BMS-125WV and BMS-115WV servos. They are very light in weight and the gear train is very tight. They are very affordable compared to other brands that don't last long. Mind you I no longer fly competitions so this is from a sport flying point of view. As I am still in the process of finishing the installation in the JTIRC Dream2 my first moulded wings glider it is not possible to comment on the performance of the Dualsky 3040 motor. However the aluminium spinner with its offset blade holders allows the CN 10×6 prop blades to nestle into the side of the fuselage and as they are only 2gms per blade should not be a drag on the glide. I have now compared the moulding quality with a couple of my sons machines and the Dream2 compares extremely well. Unfortunately the included fittings are very poor in my opinion, so have been replaced with better quality products. For a newcomer the lack of any manual/instructions was not helpful however reference to the internet did provide guidance.
HyperFlight, Neil was great and the service provided was first class thank you HyperFlight!
Review by: Simon
Excellent little servosExcellent little servos, look well made. Have used them in anger yet as their intended model is not started yet. However, have hooked the servos up to a receiver and done an initial test, all looks good
Review by: Frederik Lattner
Powerful but unreliableThe two servos I ordered were great. Really small and still powerful. Was a fairly tight fit into my Malibu 1m DLG, but that was expected.
Unfortunately, after a couple not so soft landings and plugging them in and out a few times, one stopped working. Since I live in Germany, ordering another one from this store was out of the question (high shipping cost, tax, fees, …). I would've liked to get a similar one again, but couldn't find one anywhere.
Review by: Clint
Bluebird servosHaven’t tried as yet but great service and support over the years I’ve done business with you.
Thanks Neil
Review by: Chris Adams
Mighty MiniHalf the price of the MKS6100HV and better in every other way too IMHO.
Currently doing duty in a Nan Shadow F5J driving the tail surfaces.
Buzz free, accurate centering, easy to fit and servo horns are a good fit too.
Recommended. Will buy again, thanks Hyperflight.
Review by: PF
Nice ServoThe servo was delivered quickly and well packed, something which I have become accustomed to with Hyperflight. The servo runs smoothly and centres well so I'm very pleased.
Review by: Anonymous
Bought 6 for a Nan Omega v2 worked fine centered well adequate torque. However one failed during model set up and had to be returned, hence the three stars.
HyperFlight reply: Sincere apologies for the inconvenience, but we wouid like to add that we did give a 50% refund for the returned servo. Not a full refund as the servo lead had been shortened and the servo showed signs of wear.
Review by: Justin Mellor
Great ServoExcellent servos, good centering, no/minimal backlash, reliable, wide voltage range, good value.
Review by: Mark
Decent servos, fast and preciseUsed these on my bicopter build. They were fast and accurate and did a great job until I had a bit of a crash. Both now have damaged gearboxes unfortunately. I'm hoping there's a service kit!
Review by: Mike hyde
Great servosUsed these servos in a number of installations. Great value and a reliable performer
Review by: Ray Staerck
Great Servos, great aerviceUsed Hyperflight a few times and they are now my go to store for good value, great spec equipment. Nothing is too much trouble for these guys. Highly recommended.
Review by: David
Blue Bird BMS-125WV ServoI had two '105' old versions fail when overstressed trying to open jammed undercarriage doors on my SHK. My carelessness. Nevertheless the new ones work fine and appear better overall.
Review by: Nikola
GREAT!!!Got them in my F5J plane (Crozilla) and works perfect now after 25 hours of flight.
Review by: Gary Blake
Great servo but watch outIf you invert your power source you'll not just damage these you will fry them as they have no protection. I just lost 2... ;-( Own fault I know.
Review by: david bradbury
blue bird bms 125 wvupdate on previous review fitted in flaps no response after landing smoke coming from servo and fitted new servos and worked great servo problem i think or just unlucky
Review by: Pieter
The servo is nice but has some play, the mks DS6100 does not have that so I go for the mks.
Review by: Mr Michael L Dwyer
I haven't got to use these servos yet. I bought 2 of then and one died after 6 cycles on the tester didn't get anyway near the plane.
Waiting for a replacement to arrive.
They look very good, at least it had the decentness to die on the table.
Buying from the opposite side of the planet is a bummer when things don't go to plan.
Comment by: Philip
Usual good advice and prompt delivery
Review by: Peter Mather
Excellent service and communication - 10 days order-to-door from UK to Australia. Have only tested one so far, but looks the goods and the price is right. Thank you!
Comment by: Kelvin
ServoAs usual good service
Review by: David Bradbury
blue bird bms 125 and 126bought several of these not fitted but appear reasonable quality Service as usual perfeect
Review by: Ian W
Early days yet, thanks to the plague, but the performance so far is excellent for such a compact, moderately priced servo. The service from Hyperflight excellent as ever.
Review by: Anonymous
Four servos delivered, without fuss, on time and whilst not yet fitted in to model I am very pleased with them. Packaging exceptional! I have no reason to believe the servos will perform to the same standard.
Comment by: Frank D.
Work very good and exact.
Review by: Mick stiff
Great little servo I have installed in model but not flown yet good price
Review by: Anonymous
Great looking servo, excellent value and service from Hyperflight
Review by: Justin Mellor
Blue Bird BMS-125WV ServosThese servos are accurate and good value for money.
Review by: RonG
Used Blue Bird servos in my F3K and have been more than happy with them so decided to use these in my newly purchased Osprey F5J. They behave implacably.
Review by: Nesan
good and fast servos! very fast shipping I will keep buying from Hyperflight. Thumps up