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IntoFPV Forum › General Discussion › Long Range FPV v
3" for Sub 250 challenge

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3" for Sub 250 challenge
The Red Baron Offline
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#1
15-Jun-2021, 08:55 PM (This post was last modified: 15-Jun-2021, 09:19 PM by The Red Baron.)
Hi

I just finish my new 3"... test tonight with wind

Home frame 14gr
FC HGLRC 428
Xnova T1404 3800kV
Gemfan 318, pusher
BN220 Xlight 
buzzer fullspeed
TBS nano pro32
TX antenna from la Fabrique Circulaire

weight RTF around 230gr

Marc
The Red Baron


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hugnosed_bat Offline
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#2
15-Jun-2021, 09:12 PM
what motor brand is that? xnova?
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The Red Baron Offline
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#3
15-Jun-2021, 09:18 PM (This post was last modified: 15-Jun-2021, 09:18 PM by The Red Baron.)
(15-Jun-2021, 09:12 PM)hugnosed_bat Wrote: what motor brand is that? xnova?

Yes, I'm making the change in the description...
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iFly4rotors Offline
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#4
16-Jun-2021, 03:17 AM
Hi Marc,

Do you have any pictures of the build...showing the parts...and showing the progression??
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#5
16-Jun-2021, 06:14 AM
(16-Jun-2021, 03:17 AM)iFly4rotors Wrote: Hi Marc,

Do you have any pictures of the build...showing the parts...and showing the progression??

Hi,


Unfortunately no photos during assembly...
I've been working on this 3" platform for 2 years, frame design, propeller thrust test, engine test... and no pictures Sad

Test went with great result, I hope to make the DVR video avant la fin de semaine.

Flying time : 32'30"
Max distance : 6.05 km
Flying distance : 18.7 km

   
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#6
16-Jun-2021, 06:36 AM
Nice work! Why did you decide to go with a pusher configuration? I assume it would be less efficient, but your result is impressive!

Can you share any of your motor and prop testing data?
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#7
16-Jun-2021, 11:22 AM (This post was last modified: 16-Jun-2021, 11:50 AM by iFly4rotors.)
Hi Red Baron,

What about a flight video??

Your numbers look quite impressive, but we very little other substantive information nor supporting documentation.

It would also be nice to have a picture of the quad with battery on the scales showing the actual AUW.
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#8
16-Jun-2021, 09:07 PM
(16-Jun-2021, 06:36 AM)V-22 Wrote: Nice work! Why did you decide to go with a pusher configuration? I assume it would be less efficient, but your result is impressive!

Can you share any of your motor and prop testing data?

Thanks...

About the pusher it's only a test, why not Big Grin
It's my first time in pusher and result are good.

No data for motors and props, it's about feeling, no test bench here.
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#9
17-Jun-2021, 02:51 AM
In theory, the forced air below the props should have less disturbance on a pusher since there are no arms to disrupt the airflow. Whether or not it is considered minimal or not, the air flow coming down onto the arms in a normal configuration does, in fact, disturb the airflow. Now whether or not that translates to anything noticeable is another thing.

I have one pusher. If flies good and I like it, but can't really say if it is more efficient since the frame is on the heavy side and the FC is a 20x20...so...who knows.
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#10
17-Jun-2021, 07:13 AM
(16-Jun-2021, 11:22 AM)iFly4rotors Wrote: Hi Red Baron,

What about a flight video??

Your numbers look quite impressive, but we very little other substantive information nor supporting documentation.

It would also be nice to have a picture of the quad with battery on the scales showing the actual AUW.

Hi

Pictures of the day.. Smile


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#11
17-Jun-2021, 11:32 AM
Hi Red Baron,

I have listed this quad as a participant in the challenge. Please post a full flight video. Thanks.
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#12
17-Jun-2021, 05:09 PM (This post was last modified: 17-Jun-2021, 05:09 PM by The Red Baron.)
(17-Jun-2021, 11:32 AM)iFly4rotors Wrote: Hi Red Baron,

I have listed this quad as a participant in the challenge. Please post a full flight video. Thanks.

Hi

Thanks !!!

The DVR video :

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#13
17-Jun-2021, 05:23 PM
Congrats!

I like the lightweight GPS! Do you have any pictures of the construction? Just remove the ceramic antenna and solder on a wire? What length did you use?
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#14
17-Jun-2021, 07:19 PM
Hi Red Baron,

Congratulations   !!!   High Five     All CHALLENGE Criteria met    Thumbs Up   

Good Job !!!   The video is nice, I like it  Thumbs Up

I have updated the Challenge board to reflect your success !!!

High Five
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The Red Baron Offline
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#15
17-Jun-2021, 09:57 PM
(17-Jun-2021, 05:23 PM)V-22 Wrote: Congrats!

I like the lightweight GPS! Do you have any pictures of the construction? Just remove the ceramic antenna and solder on a wire? What length did you use?

Hi

No picture Smile 
Yes just remove ceramic, wire of 47mm... and it's finish.

Results are better than orginal and -2gr !!!

Marc
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