The Raptor ESC’s have been on the market for some time now. Let’s take a look at how they perform compared to the Littlebee 20A we have.
These Raptor 30A ESC’s are provided by ArrisHobby, reviewed by Konrad.
- Input: 2-4s LiPo
- Constant current: 30 Amps
- Burst current: 40 Amps
- BEC: No
- Dimensions: 29x12x1.6mm
- Weight: 2.7g naked, 6.5g with wires
This ESC uses a Silabs F390 MCU which makes it a better choice than the older F330 based ESCs, especially if you plan to run it on low FC looptime and high kV motor. We have discussed differences between these chips here.
There are many other ESCs running on newer BLHeli_S firmware, but the mostly noticeable difference between F39X based speed controllers and those new type is their smoothness. Not everyone can notice it though, as the difference is not huge. Most BlHeli_S ESCs should also perform slightly better thrust-wise but Silabs F390 based ESCs are still a good choice in the hobby.
I will compare the performance of this ESC with Littlebee 20A (based on F330 chip) on two different propellers with Arris D2205 2300kV motor.
Also take a look at Oscar’s tests to compare performance between Aikon SEFM 30A (BlHeli_S), XM20A (F39X) and LB20A (F330).
For this test I used:
- DIY thrust stand
- RAYTRONIC WM-100
- SLS Quantum 1300mah 65C 4s lipo packs, two in parallel
|Props||Throttle %||ESC||Thrust (g)||Peak Current (A)||Power (W)||Efficiency (g/W)|
|DAL 5045×3 HBN||50||LB20||348||4.6||78||4.5|
Both ESCs are similar in performance when it comes to thrust and efficiency. Littlebee is showing more thrust only on 50% throttle. I have to remind you that LB20 had better thrust results than DYS XM20A in our previous test.
Same Layout as Angry Beast
One RCGroups user suggested that the Raptor ESC is based on UBAD 30A Angry Beast ESC. Unfortunately I don’t have any of UBAD speed controllers to take a closer look but judging by photos available online, there are indeed a lot of similarities in the layout.
One obvious difference are protruding soldering pads for the motors. There are also some small differences in component layout on bottom side of ESC where 6 FETs are located – this is probably because they are 2mm thinner than Angry Beasts and had to be rearranged.
Author: Konrad Stepanajtys