S.Bus2 servo technology has come to the car market! Designed to handle abuse better, these brushless servos last much longer and have a faster response time than brushed servos.
Check out these specs:
BLS371SV (features an aluminum center case)
Torque/Speed @ 4.8V: 176/0.16
Torque/Speed @ 6.0V: 219/0.13
Torque/Speed @ 6.6V: 239/0.12
Torque/Speed @ 7.4V: 264/0.10
Dimensions (in): 1.58x.78×1.5
Dimensions (mm): 40x20x37
Weight: 2.22oz (63g)
BLS471SV
Torque/Speed @ 4.8V: 127/0.11
Torque/Speed @ 6.0V: 158/0.09
Torque/Speed @ 6.6V: 174/0.08
Torque/Speed @ 7.4V: 192/0.07
Dimensions (in): 1.58x.78×1.5
Dimensions (mm): 40x20x37
Weight: 2.0oz (57g)
BLS571SV
Torque/Speed @ 4.8V: 104/0.13
Torque/Speed @ 6.0V: 131/0.10
Torque/Speed @ 6.6V: 142/0.09
Torque/Speed @ 7.4V: 153/0.08
Dimensions (in): 1.6x.78×1.0
Dimensions (mm): 41x20x25
Weight: 1.45oz (41g)
FUTM0151 BLS371SV S.Bus2 Programmable HV Nitro Car Servo – $159.99
FUTM0155 BLS471SV S.Bus2 Programmable HV Car Servo – $139.99
FUTM0158 BLS571SV S.Bus2 Programmable HV L.P. Car Servo – $159.99
[source: www.futaba-rc.com]