(12-Mar-2021, 04:38 PM)peveleigh Wrote: I have parts on order to build one of these. This is what I'm going to try:

* rcinpower 1202.5 11500kv motors
* HGLRC Zeus5 1-2S AIO (JHEMCU 1-2S AIO ordered as backup)
* TBS crossfire nano receiver (w/ mini-mortal antenna)
* TBS unify nano vtx
* Caddx ant lite camera
* Sony VTC6 3000mah 18650's
* Gemfan 3018 props

Note that the ant lite isn't compatible with the frame as printed since it doesn't have mounting holes. You'll need to fabricate some sort of adapter to hold the camera, which will probably eliminate any weight savings. I made the same mistake. 

Let us know how the RCinPower motors work out!

My attempt at the nano long range  Still needs some more work but I love the technical side of this project!

https://oscarliang.com/nano-long-range-build/

Hi Oscar,

Wow, that is a Nice Looking Nano.    I has a cool CLEAN look.   What motors are you running with the orange wires?

(26-Mar-2021, 01:51 PM)iFly4rotors Wrote: Hi Oscar,

Wow, that is a Nice Looking Nano.    I has a cool CLEAN look.   What motors are you running with the orange wires?

those are the Mamba 1103 10000KV motors which I took off another old quad

ooh nooo you sorted out a gtb version

whats your impression about the cog and how does this work? wont there come much more work from the front motors, can you probably do a logfile to answer about front and rear motorwork in comparison?

(26-Mar-2021, 03:38 PM)hugnosed_bat Wrote: ooh nooo you sorted out a gtb version

whats your impression about the cog and how does this work? wont there come much more work from the front motors, can you probably do a logfile to answer about front and rear motorwork in comparison?

I wouldn't worry about COG because it's not pushing the motors hard enough to cause any issues, 18650 just can't do that anyway
It flies fine but has not top end, and it struggles to recover after a dive, so it's only for flying around, not for acro really

I just saw this LOL. I shouldn't really laugh because that's really frustrating after you spent all day building it. I guess you managed to figure out the problem since you posted that video if it's now actually flying.

(26-Mar-2021, 05:00 PM)SnowLeopardFPV Wrote: I just saw this LOL. I shouldn't really laugh because that's really frustrating after you spent all day building it. I guess you managed to figure out the problem since you posted that video if it's now actually flying.

Yes I got it to hover now, it was the battery contact that had too much resistance   but still sudden move of throttle it just falls out of the sky.
I think it's the FC/ESC board that doesn't like 18650, gonna change it out to the same board Dave_C uses

I built mine with rcinpower motors over the weekend. It barely hovers at full throttle. I haven't had a chance to investigate why yet. I have a couple theories though.

1) Weight - the rcinpower motors have a 1.5mm shaft so I need to screw the motors on instead of press fit them.
2) FC limitation - I'm using a JHEMCU FC since my Zeus is still on the way. I'm also running the receiver, camera, and vtx off the FC asince my step-up converter is still on the way too. Not sure if the JHEMCU can handle the required current for all that.

Hi All,

I just starting following this thread to get some tips for my own Nano LR build.

Finally got my flying well over the weekend and actually went out 2km from home and back (4k total).
That actually only took 6 min, so my avg speed was about 40km/h and I was running 50% throttle the whole time.
When I got home I continued to fly around for another 6 min before landing, so the total flight time was about 12 min.

Note, this was all without the step-up converter, because I blew it up (more on that later)...

I know this has been a challenge for a lot of people (I saw Oscar's video ) and I definitely had my share of problems, but I can tell you that this is feasible!

I'm going to try 3km out and back today at lunch on the current setup.  I'll let you know how it goes and maybe post some DVR.
Photo attached.  It's not pretty, but it works.  Everything arrived except the battery tray, so I soldered on XT30's.
As I'm typing this my Keystone battery clips just arrived at the door, so my revised build will be using the same remixed frame that Oscar used.
Here's a quick material list:

- Dave_C Nano LR Frame (printed in CF PETG)
- RCInpower 1202.5 11500 KV motors
- HGLRC Zeus 411 AIO FC
- Ghost Atto RX and Qtee Antenna
- HGLRC Zeus Nano VTX
- Caddx Ant camera
- TrueRC Singularity Lite VTX Antenna
- 220uF Low-ESR Cap (came with FC)
- Iflight LC filter
- Gemfan 3018 props

Planned additions:
- ImmersionRC Tramp Nano VTX
- IFlight GPS
- Pololu S9V11F5 regulator

Attempted to connect the Flywoo GM8 Mini V1.0 GPS.  It was successful on the bench, but once the RX and VTX were powered up, I would not find satellites.  BTW, I reassigned UART1 (factory set for the WiFi) to the LED and S5 pins to connect the GPS and it worked.  I then reassigned UART2 RX pin to softserial TX for Tramp VTX control.  (Ghost protocol uses UART2 TX pin).

Also, I originally planned to use the ImmersionRC Nano VTX, but I blew that up before I could use it.  
The voltage step-up (same that Dave_C recommended from Bangood) was faulty and was unknowingly outputting 9V instead of 5V and destroyed the Tramp VTX.  My own stupidity, because I was rushing and didn't check the output voltage before connecting the VTX.  I happened to have a Zeus Nano VTX on hand, so I swapped that in with the 2nd regulator I had (which was OK).

Later I melted some components off the regulator when I accidently caused a short during troubleshooting. LOL

So that's where I'm at now.
The replacement parts should all be delivered this week, so I hope to have a new and improved version soon!

(29-Mar-2021, 05:01 PM)amped_fpv Wrote: - Dave_C Nano LR Frame (printed in CF PETG)
- RCInpower 1202.5 11500 KV motors
- HGLRC Zeus 411 AIO FC
- Ghost Atto RX and Qtee Antenna
- HGLRC Zeus Nano VTX
- Caddx Ant camera
- TrueRC Singularity Lite VTX Antenna
- 220uF Low-ESR Cap (came with FC)
- Iflight LC filter
- Gemfan 3018 props

I'm glad to see you're having success with the rcinpower motors. How are you fitting the propellers to the motor shafts? My props have a 2mm center hole while the motor shafts are 1.5mm.

(29-Mar-2021, 07:36 PM)peveleigh Wrote: I'm glad to see you're having success with the rcinpower motors. How are you fitting the propellers to the motor shafts? My props have a 2mm center hole while the motor shafts are 1.5mm.

The Gemfan 3018's are 1.5mm so I just press fit them without screws.
It's the first time I've tried that and was a little nervous about it, but haven't had any issues at all.

(29-Mar-2021, 07:56 PM)amped_fpv Wrote: The Gemfan 3018's are 1.5mm so I just press fit them without screws.
It's the first time I've tried that and was a little nervous about it, but haven't had any issues at all.

Ah, I didn't realize the Gemfan 3018's came in two different versions (1.5mm and 2mm). Looks like I'll have to buy some 1.5mm ones instead. Thanks!

I took one for the team today, in the name of science!

The good news is that I took the Nano LR out to my 3km marker... the bad news is I only made it back 2km...

The best news is that I was able to find it!!!

I was battling about a 15-20km/h direct side wind the whole way and I never should've attempted to go that far in those conditions.
At about the 12 min mark the voltage eventually dropped below 2.9V and I lost video.

I really didn't expect to find it, but using the LQ on the radio and directional antenna's, we were able to narrow down the general area.
The radio telemetry was still working and I could see that the battery had recovered back to 3.2V, so I armed the quad and hit the throttle hoping we'd hear something and sure enough, it was in the field about 30' away!  My son probably looked like idiots doing a happy dance in the middle of a field. LOL.

Amazingly, it landed upright and only suffered a cracked frame.  Everything else was fine.  Not even a bent prop!

Step-up converter and battery clips arrived today, so I'll be building up version 2 of the frame next.

(26-Mar-2021, 04:54 PM)Oscar Wrote: I wouldn't worry about COG because it's not pushing the motors hard enough to cause any issues, 18650 just can't do that anyway
It flies fine but has not top end, and it struggles to recover after a dive, so it's only for flying around, not for acro really

i thought cog is special important for range, as all motors have a sweetspot about efficiency, it cant provide it on all four motors if its not a well balanced build, same if it comes to the performance.
do i missunderstand something? or is it just not that much focused about the last pieces near max flighttime? as it still have good flighttime.