do you mean the linkage between V?

Originally Posted by jy0933

do you mean the linkage between V?

The actual "V" shaped part is what give the angle so it can be extend horizontaly

in fact .. i wont worry about the tail.. cuz the \=/ shape structure should hold pretty good

the problem for larger payload is actually front arm. the largest bending moment will be at connection for arm and center plate. if the 2 horizontal enhance pieces can be extend to central of the hub.. might do better

The Flex has happen further up..

where the cut outs are at..

2.3mm thick material would fix that..

can you put dimensions of your motors..

or put a link to vendor ?

I worry.. you say .. Higher KV for larger props?

normally.. if you are going to go bigger props you lower the KV..

theoretically .. lower kv for larger prop is true.. but only applies when you are aiming at not exceed max current/power at max throttle, which is not frequently pushed to...
bigger prop might decrease the "efficiency" but results in longer hovering time, which makes more sense on actual smooth flying....(acro is a whole other story)

mine is 2835- 750kv 4S.. 1045 is probably the cap that max throttle wont go above rating.. but i dont hit full throttle at all... (50% at hovering .. 100% will just like a rocket)...

Originally Posted by jy0933

theoretically .. lower kv for larger prop is true.. but only applies when you are aiming at not exceed max current/power at max throttle, which is not frequently pushed to...
bigger prop might decrease the "efficiency" but results in longer hovering time, which makes more sense on actual smooth flying....(acro is a whole other story)

mine is 2835- 750kv 4S.. 1045 is probably the cap that max throttle wont go above rating.. but i dont hit full throttle at all... (50% at hovering .. 100% will just like a rocket)...

Bledi already use smaller prop on the back

Originally Posted by Dialfonzo

Bledi already use smaller prop on the back

i might go this way too
any video i can take a look at the fly?

First post have some..

2835- 750kv 4S.. 1045 ( seems perfect )

But your plan is to use 12 in hmm..

and push things more to there limit ?

hmm to me it sounds like the head speed would drop and you would not get as good as a performance as you could with smaller props..

but if you have tested this on your quad .. could be something to think about.

Originally Posted by jy0933

theoretically .. lower kv for larger prop is true.. but only applies when you are aiming at not exceed max current/power at max throttle, which is not frequently pushed to...
bigger prop might decrease the "efficiency" but results in longer hovering time, which makes more sense on actual smooth flying....(acro is a whole other story)

mine is 2835- 750kv 4S.. 1045 is probably the cap that max throttle wont go above rating.. but i dont hit full throttle at all... (50% at hovering .. 100% will just like a rocket)...

Originally Posted by flyhigh300

2835- 750kv 4S.. 1045 ( seems perfect )

But your plan is to use 12 in hmm..

and push things more to there limit ?

hmm to me it sounds like the head speed would drop and you would not get as good as a performance as you could with smaller props..

but if you have tested this on your quad .. could be something to think about.

in theory.. best hovering time comes when the hovering power= rating power.. but then you wont take off... so leave about 20%~30% margin for take off and emergency maneuverability.. i have tired over-sized prop on my x250.. and they work pretty well.. for the large ones.. i'm still waiting for new motor... they shouldve come today.. but apprantly.. ICS delayed my packages

hmm

if you really must.. try this

we can lengthen the V part Horizontally..

the 2.3mm arms I have already..

Hmm I think you will also need taller gear.. :-)

Originally Posted by jy0933

in theory.. best hovering time comes when the hovering power= rating power.. but then you wont take off... so leave about 20%~30% margin for take off and emergency maneuverability.. i have tired over-sized prop on my x250.. and they work pretty well.. for the large ones.. i'm still waiting for new motor... they shouldve come today.. but apprantly.. ICS delayed my packages

Just did the modification.
I send the drawing to Luis cause i am going in vacation for the next 2 weeks..

- Tall gear
- Larger V plate for the tail
- Brace to accomodate the new V plate

that actually look awesome

Originally Posted by jy0933

that actually look awesome

Thanks...!

Here is the mini..

Second flight outdoors...

I had to turn down the rudder control..

on Vtail.. I had to bump it to .. 125% to get it to turn quickly..

on Y4 I had to lower it to 80% ..

Y4 Seem so much more powerful..

If I let it get up high.. then drop it down fast.. I have to use 100% power to not let it hit the grounds..

Guess it picks ups some momentum.. as it falls..

So far I like it..

hard to tell from the video ..but it does fly good.. bit more practice...
and its a keeper..

Mini-V Tail on Y4 Setup.. (3 min 6 sec)