Here is another TBS Source One 7" HD build. Most of my builds may be similar but never the same. This time around I spent a good amount of time remixing a Moongoat rear XT60 mount to fix on this frame, plus adding the dual antenna holders for the DJI Air Unit and NOT the single antenna on a Caddx Vista. The DJI Air Unit is mounted upside down on the top plate and it held one with double side tape and 2 screws. The screws on the bottom of the air unit had similar spacing as the rear standoff hole for the Source One frame. So, I was able to use a longer M1.6 screw to hard mount it to the top plate.

I wanted to push the FPV camera forward so I will get less prop in its view. I used the same camera mount that was on a Floss 2 HD conversion kit. Unfortunately, I had to remix the file for it to fit this setup. I also removed the bottom standoff so it could be used as an Immortal T holder instead.

After my last build, I grown to like this new style of GoPro holder. Instead of a full case coverage I used a half case but with a unique lens guard that acts as a lock to prevent the GoPro from ejecting for the mount.

As for the motors, I use the same motors as I have with all my other 7" builds. I know the 1850KV motors might be a tad high, but it seems to work very well for my builds. When I am flying at sea level, I typically use about 70% - 80% throttle limit in betaflight. But when I go mountain surfing in higher altitude, I can my profiles through my DJI goggles so there is NO throttle limit, and it feels just like I was flying at sea level again. All my long flight times are based on sea level altitude, so I do not expect the same flight times when a flying in the thinner air up high in the mountains.

CLI settings in Betaflight

The PIDs, Rates, and Filter screen shots are in the image gallery below.

Vbat Compensation

set vbat_sag_compensation = 100
set vbat_pid_gain = off

HD (smoothed FF for HD cameras, strong low turn rate smoothness, low iterm relax to minimise bounce back)

set iterm_relax_cutoff = 10
set rc_smoothing_auto_smoothness = 20
set ff_interpolate_sp = AVERAGED_3
set ff_smooth_factor = 40
set ff_spike_limit = 55
set ff_boost = 0
set feedforward_transition = 40
set yaw_lowpass_hz = 70
set throttle_boost = 5
set throttle_boost_cutoff = 10
set dyn_lpf_dterm_curve_expo = 7
set gyro_rpm_notch_q = 800

Flight Times

Since this quad is very similar to my other 7" quad, I would only assume I would get the same flight times. Just to be sure, I did a test and cruised around the park for max flight time in 13mph wind / 29 mph gusts. Even with the high winds, I was able to get 26:26 minutes of flight time with MOLICEL 21700 P42A 4200mah 6S Lithium-Ion battery pack. The DVR footage is shown below. I included both the GoPro 7 and DJI footage to prove the flight times. I am pretty sure no one is going to watch this boring video, but please scrub through it to get an idea of the cruising speed.

Average Flight times at Cruising Speeds:

GNB 1800mah 6s Lipo - 12 minutes
18650 Lithium Ion 6s - 17 minutes
21700 Lithium Ion 6s - 25 minutes

Madien Flight (Mar 25, 2021) GoPro 7 Black

Madien Flight (Mar 25, 2021) DJI DVR

26min Flight Time GoPro 7 Black - Cruise around the park for max time in 13mph wind / 29 mph gusts

26min Flight Time DJI DVR - This is the same footage as above but recorded with the DJI Goggles.