BMS-621DMG+HS High Speed Digital Servo (Metal Gear)7.2kg / .10sec / 46.5gFeatures:• Double ball bearing (Si-oil)• CE Certified Strong 3 Pole Motor• Heavy duty sealed water proof case• Alloy heatsink• Digital signal design with 100% fitting square PWS• Automatic measures central ms• ALU 6061 alloy and C95 gear material• Digital IC (SOP package with 12bits transfer data)• MOS-FET driver (spirited driver able to push over 7A power)Specs:Weight: 46.5g / 1.66oz
Dimensions: 40.5 x 20 x 38.5mm / 1.60" x 0.78" x 1.54"
Torque At 6.0V: 7.2kg/cm , 109 oz/in
Speed At 6.0V: 0.10 sec / 60° at no loadOperating voltage: 4.8 - 6.0VSpline Count: 25
Unit Weight (g):
I bought 4 of these and 4 of the Hobbyking High Torque MI servos for comparison... I like the HK servos but.
These are Just a LOT nicer. The torque seems similar. speed identical but there is almost no gear lash in these while the Hobbyking servos have enough gear slop to make you think they are nearly worn out... Why would I buy a nice servo if I wanted to deal with Gear slop? who knows. I will be buying All bluebird servos from now on.Very fast and precise servo, brilliant for the money really. Looks and feels like a high quality part, even the accessories look well build and the servo horn retainer screw is even primed with thread-lock (gives you an idea of the attention to detail with this product).Can't get enough of these servos. This one was for a Turnigy Trooper SCT truck. It has more than enough pull for 1/10th scale and these seem to last me forever. I've had a couple wear out the sensor around the neutral range but this is after several years of abuse so I'll keep buying them!I just started to use two of them, but they are really great. Fastert than the Turnigy™ TGY-4409MD. Sound is good, and so precise.Fantastic! Have these fitted to both 1/10 scale buggies and they perform superbly. They are fast, strong and easy to install. Recommend.Bought it. Set it up in a HobbyKing Smash Shark Boat. Drove it about 3x 20min (in 3 days) - at the fourth time the motor inside broke (BAD smell) and I almost lost my boat... Not at all recommended. PLEASE TAKE MY ADVICE - buy one with brushless motor inside!!!!!!!!!nice servo for my rally project1 word...
Ok ok.. Cheap, fast and strong. Forget the expensive brands.. BlueBird is the brand you want!A really fantastic servo for a buggy, or any other type of RC car. I had previously been using the TGY-4409 servos, but figured I'd give this one a shot. I'll never buy another 4409 again...this blows it out of the water in every category. It centers much better, and it's so much faster, I question the rating system HK is using. Either the 4409 is WAY overrated on speed, or this one is way underrated. The difference is night and day, even though they are only .01 seconds different in speed. I can't comment on durability or longevity yet, as I have only been using it a few weeks, but so far, this is an excellent servo at a budget price. I'll be buying more of them.I used this servo to replace HSP 1:8 Nokier monster truck original servo that stripped gears.
So far it looks very good. Fast and strong. Definitely faster than original was.
Also accessories pack is nice. Servo arms are reinforced with aluminium ring around splined part. So it is less likely to strip splines on servo arm.
I will order some more for other cars.