Wait.. holdup..
You didnt just fly 11km total.
t
You flew 11km away and 11km back!! wow!!

(28-Jun-2021, 07:32 PM)romangpro Wrote: Wait.. holdup..
You didnt just fly 11km total.
t
You flew 11km away and 11km back!! wow!!

Ya, he absolutely destroyed the challenge! (I mean that in a good way)

Amazing achievement!

(28-Jun-2021, 10:30 PM)amped_fpv Wrote: Ya, he absolutely destroyed the challenge! (I mean that in a good way)

Amazing achievement!

Hi Amped,

Yes, he did; which goes to show that it IS possible to meet all of the criteria.

On the other hand, I hope this does NOT dissuade others from continuing with their builds. 

The Challenge was never about being a race with only one winner, but more like a Badge of achievement; being more open ended.

Let's see if we, too, can match the Challenge. 

until such results, which still exists, the chellenge seemed to honor the dji pruducts abilities - djis abilities are named as low and bad throw this :-) thanks

i would like to know the difference between push and normal, did you ever try the other sort?

(29-Jun-2021, 10:23 AM)hugnosed_bat Wrote: until such results, which still exists, the chellenge seemed to honor the dji pruducts abilities - djis abilities are named as low and bad throw this :-) thanks

i would like to know the difference between push and normal, did you ever try the other sort?

Hi Bat,

Consider that there are two ends to the spectrum. On one end you have PERFORMANCE; you know that Acceleration and Speed desired and needed in racing and freestyle. At the other end you have ENDURANCE which is essentially Extended Fly Times for long range, long easy cruising, and certain cinematic flights. The two are NOT THE SAME thing. From what I can tell, DJI makes mostly ENDURANCE craft that are stable and easy to use, but lack that balls-to-the-wall performance for racing and freestyle. There is NOTHING BAD about the DJI Mini's performance; it is just not powerful nor maneuverable like a racer or freestyle quad.

You can't really compare an efficiency craft with a power craft; there is NOTHING WRONG with either they just have different purposes, different criteria, and are simply NOT the SAME. 

Think about it...a 747, a fighter jet, and a crop duster bi-plane all have quite different performance characteristics; definitely not the same. However, they don't have to be the same, the performance is matched to the task.
 
With that, the Challenge criteria is to match the ENDURANCE performance of the DJI Mini...NOT the power performance of a racer or freestyle craft. It is not about honoring anything, but rather to match a certain set of metrics which happen to be efficiency over acceleration and raw power. 

Consider that achieving Long Fly Times and Long Distance is more of a challenge than achieving 3 minutes of high performance acceleration.

==========================================================

As for pusher vs normal, the theory is that the pusher configuration has nothing to disturb the air flow below the props; the arms on the normal configuration does disturb the air flow below the props {like it or not, admit it or not}. The smoother airflow should be more efficient especially at lower RPMs where there is simply less volume of airflow.  I will say that it might not make much difference in a performance quad since the quad is running at higher RPMs and the thrust is generally much greater during actual flight. Again, different theories for different purposes.

Keep in mind that the Red Baron's quad in this thread is a pusher. He has gotten great Fly Times and distance with the pusher configuration.

Although I don't have any empirical data, I do have one pusher and it flies really well. Plus, the props are out of view. 

@ifly4rotors
thanks for explaining ifly4rotors, i already know the chellenge and purpose. .

"Consider that achieving Long Fly Times and Long Distance is more of a challenge than achieving 3 minutes of high performance acceleration." this is wrong, it depends how much you reach a limit and not the discipline. i practice both endurance and performance, rewatch us pm's form the past.

the diffeence on high performance quad about pusher, surface/airflow is more impressive than on a longrange quad, its more important as faster you go.
the question isnt in general, its for his particular build about the difference of push or normal. thanks for try to explain anyway.

the dji is more endurance focused than performance, but overall its not able to hold up with analog lr quads. the previous results of the challenge didnt show the benefits over dji, so im thankfull there is a an example show how huge difference between analog lr and a dji arial video craft is.

Hi Bat,

My Quest250-LR will be a pusher to start, however, after adequate testing, I will probably flip the motors to the top {normal position} and see how it compares. That should be a real comparison since the quad will be the same; just motors up or motors down. I will be aware of any perceptible differences.

Although I believe that the pusher might offer some slight advantages, I still prefer the standard configuration with the motors on top of the arms. Having the props on the bottom makes landing gear more important and more challenging to implement; this is the part that I don't like. I do, however, believe that quads with ducts or substantial prop guards do well as pushers. Again, just my perception...nothing that I can prove. 

(27-Jun-2021, 11:00 PM)Krohsis Wrote: Remember to get your 5km badge, Marc!

Hi

I would like but i have no access for the moment... too young in the forum  

Marc

(28-Jun-2021, 02:59 PM)iFly4rotors Wrote: Cool video.      I have always been a fan of the Red Baron.       

Thanks, I'm not new in the game but always interrest for experimentations...

(28-Jun-2021, 07:32 PM)romangpro Wrote: Wait.. holdup..
You didnt just fly 11km total.
t
You flew 11km away and 11km back!! wow!!

Thanks, I'm pushing the limit, long project in my mind... finaly done.

Great personal achevement, so happy

(29-Jun-2021, 10:23 AM)hugnosed_bat Wrote: until such results, which still exists, the chellenge seemed to honor the dji pruducts abilities - djis abilities are named as low and bad throw this :-) thanks

i would like to know the difference between push and normal, did you ever try the other sort?

Thanks, to be honest I don't know, first quad in pusher, not enought time to make comparison...

so far i would use all my quads in pusher configuration when there wouldnt be the downsides of practice. its mostly a no go as i dont like protectors, props freshness receive more importance from me there. therefor only one quad in my fleet is a pusher, the one with guards

looking forward for the results on your direct comparison for endurance.

(30-Jun-2021, 11:21 AM)hugnosed_bat Wrote: so far i would use all my quads in pusher configuration when there wouldnt be the downsides of practice. its mostly a no go as i dont like protectors, props freshness receive more importance from me there. therefor only one quad in my fleet is a pusher, the one with guards

looking forward for the results on your direct comparison for endurance.

I'm on another project

(30-Jun-2021, 08:33 PM)The Red Baron Wrote: I'm on another project

looking for ifly4rotors direct comparison :-)

Nice flying and great view.
Flying over all that water too.