5 replies to this topic

[Maineiack]

AUW without battery 940
ipower motors, 2814  750KV
750W changed it to custom

they say on the website,,, the ipower is the same as the 3536-11 , 750
they do not list any real specs to punch in,,grrrr,,,

looking for opinions on what "C" rated battery to buy,

with the setup listed,



jp

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[Enthlapy]

I don’t know 100% for sure but:

My observations indicate flight time is under continues load and hover is just bare minimum power to get it off the ground. Your times will vary since it’s such a dynamic machine, so it should be between those 2 values.

The real shitty part is you don’t know 100% what your motor specs which really piss me off. Most of the KV's on the motors i have looked at are bloated.




Looking at your ecalc SS you should have a shit ton of power dude, that’s a rocket!

[Maineiack]

ya,
i hate the specs they tell you,,,there all crap,,motor 99g,,ya stripped,,,120 with prop mount and base,,liars,,,
but anyways,,
i wasnt looking for a rocket,

i was looking for a long hover time,,,
before reality with the real thing/parts,,,my all up wieght on paper was 6 635g without batt,,,
punch that in for a long hover,,,,got way too excited,

then weighing each part,,,lol  reality hit,,,940 grrrrrr,,,300g over my fantasy centerfold,,,lol
so i look at her and think,
you look fat in that frame

[elmuchacho]

The spec are maybe a bit old now but the Math behind the scene is spot on and I can estimate close to a minute.

A few things on your screen shot of ecalc
1) input the total weight incl drive in xcopter total weight 2400gr is close enough to your 2386 and you don't have to input individual weight for each component the individual weight of each component become useful if the option without drive is selected
2) the screen shot only has 1 battery being set on ecalc the estimated flight time will be based on 6000mah and not 12000mah
3) For the motor I usually first select a motor from the same range/size/quality from the turnigy list and then switch back to custom and change the kv I found the estimate to be more accurate.
4) at the bottom of the page above the copyright there is a link "generate link" this will return a URL you can send us e.g ecalc

On my estimate the hover time is often really close to the real flight time on my multi minus a few minutes
e.g my FPV quad setup on ecalc they estimate around 13min of hover time and in real life I fly 15min who make sense because I use slighty stronger motor

Hope that help, Happy flying

[Maineiack]

elmuchacho, on 10 February 2012 - 01:24 PM, said:

The spec are maybe a bit old now but the Math behind the scene is spot on and I can estimate close to a minute.

A few things on your screen shot of ecalc
1) input the total weight incl drive in xcopter total weight 2400gr is close enough to your 2386 and you don't have to input individual weight for each component the individual weight of each component become useful if the option without drive is selected
2) the screen shot only has 1 battery being set on ecalc the estimated flight time will be based on 6000mah and not 12000mah
3) For the motor I usually first select a motor from the same range/size/quality from the turnigy list and then switch back to custom and change the kv I found the estimate to be more accurate.
4) at the bottom of the page above the copyright there is a link "generate link" this will return a URL you can send us e.g ecalc

On my estimate the hover time is often really close to the real flight time on my multi minus a few minutes
e.g my FPV quad setup on ecalc they estimate around 13min of hover time and in real life I fly 15min who make sense because I use slighty stronger motor

Hope that help, Happy flying

yup,
i shouldent of put in the 2x battery part, think it confused everybody,
I did use another motor, i used the BC3635-11 as the manufacturer says there the same,,then i did like you said,
changed the KV from 350 to 370
ive tried to generate a link, and send it to myself,
when it opens up, theres little if not no info,,maybe its my macbook

[elmuchacho]

Maineiack, on 10 February 2012 - 01:39 PM, said:

when it opens up, theres little if not no info,,maybe its my macbook

I've reported this bug to the ecalc developer.

To make that link work do the following
After the page has loaded and that you clicked on ok in the alert box.
hit F5 and refresh the page or put the cursor onto the address bar and hit enter
click ok on the alert and ecalc should load the data
if it do not work repeat the process until it catch up the value to be reloaded