Thickdile 7 inch FlatTop LongRange

By JoeShu on Mar 27, 2021

4  461  1

Alt Tag
Alt Tag
Alt Tag

This is my 1st proper 7 inch build that is not using parts that I savaged from crashed quads.
So I think this should be my No-Compomise build, and spend a fortune on the parts, but it turns out I made a big compomise on weight........

OK, first off, I want a frame with plenty of space for extral-large battery and FC components
So i pick the Crocodile 7, the battery bay is big enough to hold stuff as long as 140mm, but one thing I missed is this frame had resonance oscillation problems with heavy motor.
Alt Tag

To lift the bigger battery I choosed the Emax Eco II 2807 motor. Yeah, they feel heavy just by themselves.
It's 7-Inch,Why not make it long-range? So I orderd parts based on my understanding of how long-range flight......
Alt Tag

Since I perfer using INAV as the FC firmware,I used the BN-880GPS, designed a TPU parts to hold the bigger GPS
And a custom Gopro mount to clear space for the battery bay.
After 3 hours of hard work, All the stuff are shuffled into the quad.
Alt Tag

Yes, I finally realized that this thing is too heavy....
Alt Tag

I don't want to change any major part of this quad, So the only way out is to remove the gopro and get a 4K hybrid cam
To solve the oscillation problem, I added 2 carbon filber plate to connect the front arm to the back ones.
And to make use the gyroflow, I added a secondary FC just to log the gyro info.
Alt Tag

Well, one thing left is to get a good sunny day and maiden this thick boi
Alt Tag

Caddx Tarsier seems to have overheating issue, the FPV feed have a small chance to turn all white after the quad powered on for a few min. Currently only had one case of FPV cut in hovering. I may have to replace this CAM.
Spot some noise in FPV feed, changed the wire to get Cam powered from secondary FC. Reduced some of the noise. Hopefully this can reduce the chance of FPV Feed Cut.


Part List


GEP-LC7HD Frame - GEPRC (2 builds)

Flight Controller

Matek F722 Mini SE 20x20 Flight Controller (13 builds)


T-Motor P50A 3-6S BLHeli_32 4-in-1 ESC - 30x30mm (6 builds)


4 x EMAX ECO II Series 2807 Motor (1300KV/1500KV/1700KV) (8 builds)
See Site


2 Pairs DALPROP CYCLONE T7056C 7inch Crystal 3-blade Propeller for RC FPV Racing Drone (17 builds)

FPV Camera

Caddx Analog FPV&HD Recording Camera Tarsier V2 (62 builds)

FPV Transmitter

RUSHFPV Tank Solo 25-1000mW+ 5.8GHz VTX - MMCX (25 builds)


1PC HGLRC Long Range Hammer Mini RHCP/LHCP 5.8G 2.5dBi Super Mini FPV Antenna For FPV Racing RC Drone (6 builds)


TBS Crossfire Diversity Nano Rx - FPV LONG RANGE DRONE RECEIVER (96 builds)


2 x ZOHD Lionpack Max 21700 4S1P 5000mAh 14.8V Li-ion Battery


RadioMaster TX16S Multi-Protocol RF Module OpenTX 2.4GHz RC Transmitter w/ V3 Hall Gimbals (96 builds)


DJI FPV Goggles HD Digital 5.8Ghz 1440*810 720p/120fps Low Latency with DVR Compatible With Caddx Vista for FPV Racing Drone RC (143 builds)

HD Camera

GoPro Hero5 Black — Waterproof Digital Action Camera for Travel with Touch Screen 4K HD Video 12MP Photos (8 builds)

Radio Module

TBS Crossfire Micro TX V2 (154 builds)

Battery Charger

HOTA P6 DC 600W 15AX2 DC Dual Channel Smart Charger with Mobile Service Charging for Lipo LiIon NiMH Battery
Show stores (8)


Sign in to comment

upioneer   Apr 02, 2021  

super clean build. i like the tpu!

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