Heres an ESC for those that like to push their equipment a little - hotliner pilots this means you!

The Hobbyking 70amp ESC is Opto-isolated from the receiver, meaning that it has no internal UBEC to power your receiver and servos.

Historically, you would need to purchase either an external UBEC or a separate receiver battery to complete your power system when utilising an Opto-coupled ESC.

Not any more - We have an all in one solution!
This ESC is supplied with a pre-wired 5amp external UBEC, not just any UBEC, this is jumper adjustable to provide 5, 5.5 or 6 volt output to your radio equipment. The UBEC is wired directly to the battery input cables to the ESC.

This arrangement will add a margin of safety to high powered (or highly strung) models. In the event that the ESC was to fail, the receiver and servos will remain powered and the pilot should be able to land his model safety.

The only incident this system wont safeguard you against is Lipo cell failure - Always be sure your Lipos are up to the task at hand and that you are drawing less than their rated C current.

User Programmable settings:
Brake Setting: On/Off
Setting for battery type: LiPo or NiCd /NiMh
Low-voltage protection : low / medium / high
Motor timing setting: low/medium/high
Start up type: soft/medium/hard
Helicopter mode (Governor): On/ Off
Motor Direction: Cw/Ccw
PWM operating frequency: 8KHz / 16KHz
LVP type: slow down/dead cut

Specs:
Continuous current: 70A
Max current (10 seconds): 100A
Input Voltage: 2-6s LiPo (7.4- 22.2v) / 5-18 NiMh
BEC type: OPTO/UBEC 5amp (external)
Standard configuration: 5.5V/5A (external)
Jumper setting: 5/5.5/6 volts
Dimensions: 70*28*20 mm
Weight: 80g