Smart ESCs? The Wraith32 35A

Please save yourself some time and go straight to the conclusion.

Contents:

  1. Smart ESCs?
  2. The Wraith32
  3. Blheli_32
  4. Comparison to Aikon/Spedix ES 30 HV
  5. Comparison to Super Racerbee 30A
  6. Size and Weight
  7. Blheli_32 Suite
  8. Raising the Bar on the World Record
  9. Flight Test/Video
  10. Conclusion

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Smart ESCs?

Inherent in the Wraith32’s name is the fact that it is a 32 bit ESC. Gone are the days of the 8 bit EFM8BB21 MCU: we are now in the dawn of a new generation of ESCs that are using the 32 bit STM32 F0 ARM Cortex-M0 MCU. Although both MCUs run at 48Mhz, these ESCs 32 bit processing power will enable our quads to indulge in a new range of tools to enhance performance.

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The Wraith32 35A ESC:

The Wraith is easily the best looking (in terms of quality) that I have seen. However, after installing a set, one of the ESCs just quit – only change I made was reflashing the fc. After A LOT of troubleshooting, the ESC was at fault.

Wraith32 Features:

  • Blheli_32
  • 35A with 45A burst
  • Dshot 1200
  • 3S-6S
  • 32 bit STM32 F0 ARM Cortex-M0 MCU @ 48Mhz
  • RGB LED
  • Current sensing resistor
  • Telemetry
  • Takes commands from flight controller (via dshot) such as make motors beep, enable bidirectional mode, (list will grow as I learn more)

Wraith32 02a

Wraith32 01a

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Blheli_32:

Since the Wraith is a 32 bit ESC, you will have to use the Blheli_32 Suite to do any programming.

Blheli_32 Features:

  • Automatic motor timing
  • More precise control if manually setting motor timing
  • Set max motor acceleration (helps prevent desync)
  • Set max current
  • Smoother throttle
  • Better handling of spikes in throttle response

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Comparison to Aikon/Spedix ES 30 HV:

Wraith32 Spedix 01
Top: Wraith32. Bottom: Spedix
Wraith32 Spedix 02
Top: Wraith32. Bottom: Spedix

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Comparison to Super Racerbee 30A:

Wraith32 Bee 01
Top: Wraith32. Bottom: Super Racerbee
Wraith32 Bee 02
Top: Wraith32. Bottom: Super Racerbee

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Size and Weight:

Wraith32 weight
Wraith32 35A
Super Racerbee 30 weight
Super Racerbee 30A
Spedix weight 01
Spedix ES 30 HV without heat sink
Spedix weight 02
Spedix ES 30 HV with heat sink

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Blheli_32 Suite:

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Raising the Bar on the World Record:

Since the VX1 is now in the bone yard, the Wraiths will be going into the VXT build. I wasn’t finished seeing what the VX1 can do and I’m hoping the VXT/Wraith/APC 5050s can break the 154.5 mph mark set by the VX1.

Project VX1 01
VX1

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Flight Test/Video:

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Conclusion:

I decided not to finish this review due to horrendous quality control. Out of EIGHT of the wraiths, I had THREE bad ESCs. The last straw was when one of the FETs burned up on my 4th flight – I wasn’t under hard throttle, I didn’t crash, etc. Rather than replace the wraith, I decided to ditch them for something more reliable.

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