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iFlight Nazgul Evoque HD "4S version"
#1
I have one, which I fly on GAONENG 130/260C 1800mAh 4S.  I later bought the GEPRC Mk5 HD 6S (ELRS), which I fly on GAONENG 100/200C 1350mAh 6S.

They are both standard 5" with freestyle hardware as supplied. Apart from minor rates tweak no Betaflight changes to either.  There's little difference on flight ready weight.


Flew both today, hence getting to this post which I have  meant to do SO many times!   Rolleyes

They are staggeringly chalk and cheese, night and day, etc, etc.  Big Grin

Flown with the same level speed and smooth freestyle actions, the Evoque struggles to get past 4 minutes on 1800mAh 4S.  I'm forced to battery manage it to get past three. On 1500mAh it is 2.5 mins if flown with any aggression, 3 mins is max.

The same batteries on the lighter Hawk5 or Sports Hawk give around seven minutes max, but usually around 6 mins, even with more aggression.

The Mk5 sails past six minutes and usually tops out at between 7.5 and eight minutes on the 1350mAh 6S. Without any specific battery management. Put the 6S Mk5 on the 1800mAH 4S and while obviously the lower power is there, its really minimally evident, the quad just carries on regardless most impressively!

This duration penalty sees the Evoque little used, generally only, like this morning, when high dew levels and sopping wet grass mean its side protection is actually useful. BTW, its plethora of LEDs are useless in daylight, totally invisible.

The Evoque was sold with unmarked motors, so kV not known. Are they even 4S motors? It was bought at a time when components were extremely difficult to obtain, and there were 4S and 6s versions. Could it be that?  If it is a 4S version, will its components handle 6S?


I have to do something to get more duration with less sag, or reluctantly I will need to sell it, but what to do to improve it?   It wasn't cheap, and so far its been Poop .

Thoughts?
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#2
Well, no comments then!?  Thinking

Nothing has altered here, have flown the 4S Evoque on a variety of differing packs from 1300 to 2200, all 4S as sold.  Tried various props, too.

Duration is still significantly inferior to 4S Sport Hawk, 4S Hawk5, and GEPRC Mk5 on 6S and 4S, flown like for like on style and agression, freestyle.

It'll be sagging known good packs in 30 seconds from take off. Lucky to get near 4 mins, and that with fun killing throttle management.
 
Frankly the Evoque has been a big disappointment, anything to try before I bin the damn thing?
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#3
some battery math might help. the weight can make a big difference.

a 1800mah 4s = 30.24 wh
1350mah 6s = 34.02 wh

the 6s pack might increase the average and peak current to an innefficiency settup from its weight and maybe performance.

i would suggest a 1000mah 6s pack as a try, maybe it fits your flightstyle better.

overall i dont fly such common freestyle quads, i like to use power, acceleration and nimbleness. i fly lightweight builds with small batteries therefor. i beleieve the sport hawk 5 would be that route.
maybe you like to go in that route and rebuild it with lowered weight; another frame... ?
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#4
One thing that you might try is testing out some different props on the Evoque. This can make a pretty big difference in flight performance and is fairly cheap to do. Also, bigger batteries aren't always better. You have to find the sweet spot for each individual quad.

If you arent into figuring all that out, you should probably try and find a new home for it.
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#5
Did you say motors are sagging at full throttle?
Sagging motors is a sign the motors are overheating unless the batteries burst rate is over 5-8 seconds or lipo is dumping.
A sagging motor is from having too large a prop for the kv rate or poor quality motors.
When a motor starts sagging first it’s the windings getting hot,then heat moves to the stator and or magnets and bell housing.

If you wanted to estimate the kv you can use rpm OSD and battery voltage OSD.
Divide the rpm at maximum throttle and divide by the displayed voltage.
It’ll be a rough estimate .

How many amps are the motors pulling at full throttle?
There’s an OSD setting for displaying amps.
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#6
I have tried a wide range of 5" props, including of course the supplied ones supposedly "right". Differing pitches. Well used to prop tuning (even to trimmimg for best effect on planes)

I stated the range of batteries used to prove I'd gone either side of the expected 1500-1550 mAh.

I said the BATTERY voltage was sagging under punch outs, even immediately when still fresh charge. Known good 100C (200C surge) 4S 1550mAh batteries that power similar weight quads to 2-3 minutes more flight time.

Motors are not overheating. Neither is battery getting any more than expected warm.

Will try and get current data.
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#7
no heat on the battery sounds very strange for the flighttime, it should be pretty warm. on what voltage do you land? where does tve voltage recover after flight?

if the motors heat up, on a matchibg tune, there is to much load for the motor.
-a bigger motor, more lightweight blades or smaller battery can help

if the battery heatsup to much, cool motors
- a bigger battery, lightweight props can help

if motor and battery stays cool, it matches eachother.
the energy goes somewhere, as it is a short flighttime, there should be heat as result Undecided


sagging is for lipos, motors doesnt sag - i would call it overloaded and as result heat, wasted energy. maybe im wrong and missunderstand the word sag?
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