Squirt v2 HD 6S - 2004 / 2900kv Motors

By wrong17 on Apr 27, 2022

7  216  0

This is an interesting build because it did not turn out as planned. In the middle of this build I have been testing and idea of prop placement within the ducts and it turns out that it can make a difference. If the props are too high, you will some efficiency. Even though we are using mini ducts, they can make a difference in the amount of thrust you get. I will come back to this idea later, but in the meantime, I will take about the problem I encountered.

A while back, I bought some 1507 2800kv motors that was on a 3” quad, but never really pay much attention to them because I did not run 6s. Finally, I have a build that it would work perfectly with those motors. After building the Squirt, I notice that one of the shaft was bent when I was testing the motor direction in Betaflight. It has been so long since I bought it so, I cannot go back to the seller and complain about it. What should I do now, because I need some motors? Since I like trying new things, I came up with another test that I have not tired before. How would a Squirt do with 2004 T Mount motors? I know of 3 props that would work with this setup:

  • HQ Duct T75MMX5 CineWhoop 5-Blade Propeller
  • Gemfan D76 Ducted 5-Blade 76mm CineWhoop Propeller
  • T-Motor T76 3" Ducted Propeller

Of the 3 props I only have the HQ and Gemfan. I just ordered a set of the T-Motor props but that would not show up until the end of the week. If I had to guess, I think the T-motor props would be the most efficient, the HQ will be the smoothest and the Gemfan is amp hungry powerhouse.

I was kind of worried about the HQ props not having enough thrust, but I was wrong. I can hover with a Full GoPro 7 around 20 - 30% throttle. It is kind of difficult to know the actual throttle position because the OSD no longer shows us with the DJI HD system.

3D Printed Parts

In the recent weeks I have been doing a lot of testing with the variouse duct setup and 3D printing settings.

To sacrafice ridgidty I was able to save a lot of weight. I am not sure what is the typical weight for a set of ducts, but in the past I was happy with the 52g weight for the pair. But now, I am able to get a pair of duct down to 32g!

More info coming soon.....


I tried using the Presets on EMU 0.4.0 and it was bad, then I tried 2 other Betaflight tunes for the Squirt and they were also no good. It is rare to find this quad with a T Mount motors so I end up try the PIDs that was on a CineLog 35 because they have similar motor size and surprisingly, it worked very well.

Alt Tag
set p_pitch = 80
set i_pitch = 88
set d_pitch = 45
set f_pitch = 105
set p_roll = 82
set i_roll = 88
set d_roll = 45
set f_roll = 99
set p_yaw = 80
set i_yaw = 60
set d_yaw = 0
set f_yaw = 99


Alt Tag
As for the rate, I used the same thing I have on the Squirt with 2205 motors.

Alt Tag
set dyn_notch_width_percent = 0
set dyn_notch_q = 120
set dyn_notch_min_hz = 150
set dyn_notch_max_hz = 600


Fast Flying

GoPro 7 - HQ T75MMX5 - CNHL MiniStar 1000MAH 22.2V 6S 100C Lipo Battery

Same video as above but with the DVR

Madien Flight

Maiden Flight - GoPro 7 - HQ T75MMX5 - CNHL MiniStar 1000MAH 22.2V 6S 100C Lipo Battery

Same video as above but with the DJI DVR



Sign in to comment

Guides & Reviews

Jun 21, 2021

AirbladeUAV has done it again and this time they've brought long range to the 5" class! Based on the popular Transformer Mini, the new Transformer 5" Ultralight adopts a lot of the same design philosophies with larger props and more payload capacity. It can fly upwards of 20 minutes on a 4 cell Li-Ion battery pack and in ideal conditions it's got a range of over 4 to 5 miles. In this guide I'll walk..

Read more
Mar 04, 2021

With the release of the DJI FPV Drone cinematic FPV has become a lot more accessible, but you certainly don't want to crash a $750 drone! The QAV-CINE Freybott is a compact, lightweight cinematic FPV drone that can take a hit and keep going. It's a lot safer to fly indoors and around people. With a naked GoPro or the SMO 4k you can capture some great stabilized footage. In this guide I'll show you..

Read more