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MattHiggins
06-25-2007, 11:15 AM
http://www.rccaraction.com//Media//CorePages/futaba_bl_servo.jpg

From Futaba:
Brushless + Digital = Superior Servos!
Futaba digital servos offer precision, power and performance far beyond that of standard servos.
And when Futaba complements their digital servos with cutting-edge brushless motors, modelers
enjoy top-of-the-line technology for taking R/C to the next level! A long list of advantages
makes these servos a “must-have” for modelers:
• Unparalleled response times – 30% faster than standard digital servos
• Less susceptible to the effects of vibration and/or shock — a problem that has hindered
modelers for years
• Lower operating temperatures — for added longevity
• Specially treated gears that virtually eliminate slop and backlash
• Increased resolution – keeping the modeler “in-touch” with his model
• Samarium Cobalt magnets
• Dual ball bearings
• The same power consumption and centering as with brushed digital servos, with the
same case size as typical standard-sized servos – they fit anywhere a standard Futaba
servo was installed
• Futaba 1-Year Warranty
With their brushless motors, these servos will last more than five times longer than servos with
brushed motors. Additionally, the motor design allows these servos to run cooler for optimisms
and reliability.
BLS251 Brushless Heli Rudder Servo
• Designed specifically for heli rudder operation
Specifications:
• Torque @ 4.8V: 51 oz-in • Speed @ 4.8V: 0.06 sec • Dimensions: 1.6 x .8 x 1.5 in (40.6 x 20.3
x 38 mm)
BLS351 Brushless High-Torque Metal Gear Servo
• Designed for nitro or electric cars, trucks, boats and airplanes
Specifications:
• Torque @ 4.8V: 155 oz-in • Torque @ 6.0V: 194 oz-in • Speed @ 4.8V: 0.16 sec • Speed @
6.0V: 0.13 sec • Dimensions: 1.6 x .8 x 1.5 in (40.6 x 20.3 x 38 mm)
BLS451 Brushless High-Torque High-Speed Servo
• Designed for nitro or electric cars, trucks, boats and airplanes
Specifications:
• Torque @ 4.8V: 111 oz-in • Torque @ 6.0V: 139 oz-in • Speed @ 4.8V: 0.14 sec • Speed @
6.0V: 0.11 sec • Dimensions: 1.6 x .8 x 1.4 in (40.6 x 20.3 x 35.5 mm)

Holeshot101
06-25-2007, 11:19 AM
Nice Futaba, I was wondering when a company would do this and Futaba stepped up.

crazy4wdracer
06-25-2007, 02:45 PM
thats a cool idea!

rezenclowd3
06-25-2007, 04:01 PM
The specs don't impress me when the JR 9000S and 9000T servos are out there....Faster and more torque and also digital.

JDAWG53
06-26-2007, 10:11 AM
The part that your missing is that it is brushless. That means that it is substantially more efficient. Meaning that it doesn't draw as much from your receiver battery during those long mains.

t9dragon
06-26-2007, 11:58 AM
I didn't know servos had brushes in them...............

traxxas-dude
06-26-2007, 12:14 PM
Well they aren't really brushes per say, they are more like little metal tabs that contact the comm. I agree with rezenclowd3, brushless or not, I'm not impressed. I'll stick with my JRs.

rezenclowd3
06-26-2007, 12:33 PM
I didn't miss that part about them being brushless. I am still not impressed.

Also it looks like you may be wrong about efficiency: "The same power consumption and centering as with brushed digital servos, with the
same case size as typical standard-sized servos"

Well see however.

nitro syco
06-26-2007, 02:30 PM
Maybe there is potential in brushless servo world but these here seem to have no advantage at all, actualy less speed and torque than I would expect to see from a high quality digital and these will probably be big $.

hijacker
06-27-2007, 03:16 PM
I think we are seeing an aspect of the "If You Build It, They Will Come" phenomenon.

Some people purchase high-tech stuff just 'cuz it's there.

This is probably the future of servo technology though.

LongRat
06-29-2007, 11:17 AM
Maybe they will be a lot more popular in aircraft, where you really DON'T need a servo motor burning out on you mid-run. Very often brings down the whole plane. One of the main points they are advertising on these is durability and longevity.

rccardude04
06-30-2007, 10:56 PM
It looks to me more like a longevity thing. I started a thread on a couple heli forums a while back and that seems to be the big advantage. We also wound up curious about rotating mass of the motor as far as response and what not.
And I totally e-mailed you guys about this a few weeks ago :p
-Eric

kufman
07-02-2007, 12:21 PM
You have to remember that the brushed servo specs are for a new servo. This will not be true after time. The brushless servo should perform up to its spec for a long time.

ALJR
07-05-2007, 09:08 PM
The specs don't impress me when the JR 9000S and 9000T servos are out there....Faster and more torque and also digital.

And JR quality is as good as Futabas? I "had" two 9000s JR servos and they both had serious twitching issues after only a few race days...

rccardude04
07-05-2007, 10:00 PM
And JR quality is as good as Futabas? I "had" two 9000s JR servos and they both had serious twitching issues after only a few race days...

Futaba FTW! :D
-Eric

rezenclowd3
07-05-2007, 11:12 PM
Then you got a bad set! Crap happens.

Racer Rob
07-06-2007, 08:08 AM
I am sure those are cheap... but nice to see new technology.