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Jun 04, 2020, 03:37 PM
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oh, yeah sorry misread inches for degrees, so the sweep is 45deg on both
so smaller is faster, now it makes sense
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Jun 04, 2020, 04:13 PM
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Originally Posted by LongRange_UAV_4G
oh, yeah sorry misread inches for degrees, so the sweep is 45deg on both
so smaller is faster, now it makes sense
Smaller is more agile : quicker rolls and loops . Larger is more docile : slower rolls and loops .

Top speed depends on the motor/prop/voltage , and airframe drag . A larger airframe will usually have more drag than a smaller airframe , if they are both the same design .
Jun 04, 2020, 09:54 PM
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ok, i definitely want to do this but i'll wait until my new parts arrive, one week or so, i'll also test fly my modified first wing, for now that's delayed a little by weather and other things
Jun 04, 2020, 11:13 PM
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these are the motors i'm getting

https://www.youtube.com/watch?v=pp69vawQcuw

oooooooh, my parts are in the country, so 1-2-3 days, cool
Jun 04, 2020, 11:45 PM
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i think what i'm going to try and do is get a delta flying with a flight controller and gps on it, if that works maybe a vtol one with two motors

obviously i'll try a simple one first
Jun 05, 2020, 12:56 AM
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Quote:
Originally Posted by LongRange_UAV_4G
these are the motors i'm getting

https://www.youtube.com/watch?v=pp69vawQcuw

oooooooh, my parts are in the country, so 1-2-3 days, cool

i think what i'm going to try and do is get a delta flying with a flight controller and gps on it, if that works maybe a vtol one with two motors

obviously i'll try a simple one first
Tiny high-kv quad motors are not ideal for an RC airplane , but that doesn't mean they won't work . Twin motors would definitely be better than just one .

Do you want to put a 6 axis flight controller on a delta for self-leveling , or just a 3 axis gyro for wind gusts & turbulence ?

I recommend waiting to put GPS on until after you have successfully flown several flights .

RC Groups member goldguy has built a delta with twin motors :
https://www.rcgroups.com/forums/show...9-The-UltraFly
Jun 05, 2020, 08:57 AM
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i want to be able to program missions
thanks for all the info. much appreciated
Jun 05, 2020, 05:40 PM
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i'll let you know when the parts arrive, that's the next step

that twin motor delta is cool, will be interesting to make a vtol one like that
Last edited by LongRange_UAV_4G; Jun 05, 2020 at 08:08 PM.
Jun 05, 2020, 11:38 PM
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i tried to fly my model, it's too heavy and under powered, it flies ok now, only slowly and towards the ground, i'm going to start again when my new parts arrive, with a much lighter delta
Jun 05, 2020, 11:56 PM
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got any thoughts on power to weight?

if i make a 500g delta how much thrust do i need to keep it airborne?
Jun 06, 2020, 12:56 AM
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Quote:
Originally Posted by LongRange_UAV_4G

i tried to fly my model, it's too heavy and under powered, it flies ok now, only slowly and towards the ground, i'm going to start again when my new parts arrive, with a much lighter delta

got any thoughts on power to weight?

if i make a 500g delta how much thrust do i need to keep it airborne?
What are all the motors do you have at the present time ?
Jun 06, 2020, 10:01 PM
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Originally Posted by balsa or carbon
What are all the motors do you have at the present time ?
here you go, the big one seems to give over 1kg of thrust and the smaller one about half that
Jun 06, 2020, 10:29 PM
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Originally Posted by LongRange_UAV_4G
here you go, the big one seems to give over 1kg of thrust and the smaller one about half that
I recommend making a large SSD , as lightweight as possible ..... and using the smaller motor . And use the lightest battery you have that will provide enough volts/amps for that motor .

Once you are comfortable flying the large SSD LOS , then make a smaller SSD for more speed and agility .

Once you are comfortable flying the smaller SSD LOS , then add all the FC , GPS , RTH , WayPoint , etc. that you want .

And make sure you follow all the rules , regulations and laws ..... for the place where you will be flying .
Jun 06, 2020, 11:08 PM
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hi, just found a sticker on another identical motor to the small one KV1450

thanks for all the advice, super appreciated

i'm currently waiting for a much smaller battery, i'll keep you updated on my progress

cheers
Jun 07, 2020, 12:10 AM
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Originally Posted by LongRange_UAV_4G
i'll keep you updated on my progress
cheers
Looking forward to it !


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