geprc 12a 4s 1105 6000kv

By matthew saigon on May 30, 2019

6  473  0

i'll clean up the page later :)
-- i crashed this one a couple of weeks ago and had to wait for new frame.
-- while waiting for the frame, i found kingkong 76mm props for 1103. the most interesting props ever.
-- so i'm busy working on those props and have to put this on hold. i haven't tested this 4s 1105 since. this will have to wait. i'm sorry :(

6/1/2019: i flew LOS with avan 3" props. it turns out this build and pid like them. i think i'll fly with them for a while :)

yes, it's my other 1105 wild flower build. i just put 4s on it. i'll move it there after a few weeks.
i just make a new page to show it to testers.

i flew LOS for 10 packs for testing. it flew fine. punchouts at 100% throttle.
motors felt a bit warm, not hot with weather at 80 degrees.
i guess Betaflight 4 helps keeping motors cooler.

the build is just a normal build. but if you have question about the build, just leave a message.

my pid is ok, a good starting point. most of it from "betaflight community presets", so creadits to them :)
68g dry
4s 450mah ( i just bought Gnb 4s 520mah, i think it's a better choice. but i don't know yet. i'm waiting for them arrive )
3025 props
hglrc flame 1105 6000kv

betaflight 4.x.x
set gyro_lowpass_type = BiQUAD
set dyn_notch_min_hz = 150
set dyn_lpf_gyro_min_hz = 150
set dyn_lpf_gyro_max_hz = 700
set dyn_lpf_dterm_min_hz = 150
set dyn_lpf_dterm_max_hz = 250
set dterm_lowpass_type = BiQUAD
set dterm_lowpass2_hz = 150

set anti_gravity_gain = 5000
set p_pitch = 50
set i_pitch = 95
set d_pitch = 27
set p_roll = 47
set i_roll = 88
set d_roll = 25
set d_min_pitch = 18
set d_min_roll = 16
set d_min_boost_gain = 30
set d_min_advance = 0

set iterm_relax_type = GYRO
set iterm_relax_cutoff = 11

set tpa_rate = 40
set tpa_breakpoint = 1600

-- it's hard to tell from the video. but it's more responsive and faster acceleration.
-- 4s 450mah is too small. it comes down a bit warm with mostly 60% punchouts. but 4s 550mah is 78g. it might be too heavy compare to 4s 450mah 55g. why isn't there 65g batteries ?

-- i just found 2 tattu 4s 650mah around my house. it weights 68g. but it doesn't feel like 650mah but more like 550mah.
-- anyway, it's still better than tattu 4s 450mah. now i think about it. what if tattu 4s 450mah feels like 400mah or even 350mah. who knows.



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