https://www.team-blacksheep.com/products...urce_aureo

a 50g 7" frame :-o wow :-o 
this might be nice on low kv 2004 motors :-)

This frame was a hot topic for discussion on quite a few TBS live streams. It seems quite fragile (the material between the two carbon plates is like some kind of foam) so you just need to make sure you don't crash it. They originally named it the Squarce but then changed the name to Aureo. I thought they were also going to release an all carbon fibre frame of the same without the foam sandwich which would have been heavier but more durable. However I don't see that listed so maybe they decided to drop that possible option, or maybe that will come along later.

That is one fugly frame....

But the micro folks may love it.....

When it was first announced a few months back it was code-named the "pizza box"

sometimes they like to go crazy? by plastics or faom? :-)

wouldnt fit "maxi weak oblivion" :-)

but i like to know how it is and performs. i dont understand this combination but i like to get impressions

Years of experimenting, and we still dont know what is best.
Its not like machine AI or math was used to make this.

IMHO, we got like 5 frame arm option:
1) H. oldschool
2) X. Simple
3) X with double "web". like PodRacer
4) 8. Two arm to arm braces. ET5
5) Square-Cross. This one.

Just a thought...

The way I see it, these "different" frame designs are all working to get a light weight frame that won't explode when it hits the ground. All of those extra braces are to make up for a lack of strength in the those "not substantial enough" little arms. If the arms are strong enough, you don't need braces, but the frame will be heavy. On the other hand, lighter weight arms are not as strong and need braces. That is just the reality; the physics of it.  

With a 50g frame, you have half a chance at building a 7 inch quad that might come in less than 200 grams dry weight. If you can get the dry weight to about 180 grams, you can strap on a 3S 1100 mAh battery and call it a "Sub 250g 7 inch".  Sure, you won't be able to fly long range, but it would fly. Doesn't that count    

How about a 3-5 minute flight around the park with a 7 incher 

Oh yeah, don't crash the thing     Better buy spare frames. 

Next thing you know, the frames will be a piece of foam with a thin Balsa wood plate.    

the brotherhobby vy 2004 1650kv might be able to spin a lightweight 7inch blade on 4s-lipo or 5s-liion, this settup could be about 150g without battery. i guess ul-longrange is the only usability for this.
it cant be stiff enough for racing or acrobatics, i like to know if its stiff enough as a cruiser. probably something for you ifly4rotors?


balsa? might damp vibrations! xD

i sent an image to a buddy like to build an ul 7inch for cruising, he told its to heavy xD he will do an unique frame at 30g max :-)

Bigger prop is more efficient
Tip of the prop is moving fastest and grnerating most lift/power
Slow spinning is better

But,
There are no light 7" props.. or T mount.
The weight and momentum and air drag is much bigger than 5". So ofcourse terrible propwash handling.

A good 2004 motor at lower cell count wont smoke. Might still be in 20-40% efficient throttle range for hover, but not when cruising.

No. the question is not can it be done?
or even, if it will work?

Really, its how much performance and extra battery you trade for extra carbon fiber and bigger prop.

Larger != better. Larger prop can be more efficient.. not always.
Look at the two extremes.

A 20" prop. 10g. 200g frame. Doesnt matter how efficient the prop is. You have no weight left for battery.

A 2" prop. 0.5g. 5g frame. You can put 200g battery, but its used very inefficiently.

https://www.hqprop.com/hqprop-t6x25x3-li...p0283.html
a 6inch would be available

there is a bh 2004 motorversion with usual motorshaft

https://www.brotherhobbystore.com/produc...4-motor-cw

they suggest 2s on this motor and the max current draw is 7,3a on a hq7x4x3 xD
its at 8,4v, fully charged, the current should increase a little bit on a lower voltage, but 10a esc should be enough xD

(27-Jan-2021, 08:57 PM)hugnosed_bat Wrote: https://www.hqprop.com/hqprop-t6x25x3-li...p0283.html
a 6inch would be available

there is a bh 2004 motorversion with usual motorshaft

Hi Hugnosed,

GOOD FIND...Thanks. 

This prop will give me an option for the Karams-LR7x build just in case I want to drop down from 7 inch props.
It is all about the motor. I have a set of T-mount motors that I would like to try on that build. 

HQProp is way out in front with providing larger T-Mount props. They were the first with 5 inch T-Mounts.

wasnt gemfan more early with their awesome mount combination, to ise on both platforms?

(27-Jan-2021, 09:41 PM)hugnosed_bat Wrote: wasnt gemfan more early with their awesome mount combination, to ise on both platforms?

Don't know for sure. When I was looking, all I could find in 5 inch T-Mount props were HQProp bi-blades and nothing else.

I have used Gemfan's hybrid T-Mount/5mm tri-blade props...the thing broke at the hub on first landing...and it wasn't that high off the ground, and it didn't drop from the sky. I took them off and put on some HQProps that I had. I will likely try those hybrid things again since I have several packages of them. I thought they were cool; I could use them with any motor. In reality, it makes the hub very thin all the way around so they are not as strong.