New! QK Hunter 260 ARF Kit build log & review

Started by Dharmik, June 15, 2014, 08:23:33 PM

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satyagupta

Which motors is used? if you use tiger motors it generates 300 grams of thrust. the motor that comes with this kit generates 250 grams thrust max.

For this kit its better use some action camera which records the video.
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SideWinder

@Aditya
Throttle position is not a way to measure capacity or efficiency because radios have different settings which effect throttle position such as curves,expos, stick end points etc. Instead AUW and motor thrust needs to be taken into account.

Similarly flight times too can change for different people with the same setup because of their flying skills. I can get 5 to 8 mins on the same battery just because of different flying styles.

You wont be able to mount a board cam as it is, because cant see slots or anything on the frame so you will have to probably do some mods to mount them on. Shouldnt be a big deal.

As for durability, if you take a real bad crash say drop from 10', even CF frame would fail depending on lot of factors, and most crashes are pilot errors. However the frame would be sturdy in flight, since I think 1.5mm fiber plates have been used for the body while 2.5/3mm for the arms which are good enough for that size.

Im using same motors to haul 450gms of weight including FPV with a 3s1000mah lipo for 7-8mins in normal flights. Everything depends on AUW.

Dharmik

I tried flying it with complete fpv gear. I will post detailed review soon.

Adityaamg

#53
@Sidewinder: can you post some pics and videos so that i am sure about what i am going to buy.
what fpv gear are you using sir? i use a 5.8 200mw from hobbyking with a boardcamera.
i have seen these rcx motors delivering 300grams of thrust on full throttle and 160grams on half stick.

so you are saying that with the stock quad and battery (1250mah) + my fpv gear(70grams) will give me decent flight times and a nice agile quad ?

SideWinder

I should have mentioned specifically in hindsight. Anyways,I dont own the frame myself,using a self designed frame with board cam mount.

Yet Dharmik has documented the build which you can find here
http://rcsci.blogspot.in/2014/06/new-qk-hunter-260-arf-kit-build-log.html

I do own the motors/esc so I can say that the motors can fly a quad of 400-500gm AUW on 3s with a lil bit of effort including FPV setup.Frame weighs 120-130gms approx.You can checkout my quad @ http://www.rcindia.org/multirotors/mini-foldable-h-quad-build/

If motors can deliver 300gm thrust at full throttle then ideally thrust at half throttle should be 150gm! That is reason i told you not to take throttle position while comparing capability of a motor. I designed my quad by considering 250gms max thrust for those motors.

I would consider 7-8mins as decent flight times at such small size. And the 1250mah should be able to give you that with a smooth flying style i.e less sudden speed runs/climb and braking.Agility would again depend on AUW, PID, Environmental conditions and your flying skills etc.

However yes you should be able to get decent flight times with stock lipo+fpv with decent amount of agility.Keep in mind that at such small sizes even 10gms matter.

Adityaamg

Thank you sir, for your kind replies. I really appreciate them.

Dharmik

Please have a look at the review. I have tried to cover everything but if you need any help please let me know. Will update it with more data and videos.
Hunter 260 ARF kit review

http://rcsci.blogspot.in/2014/06/qk-hunter-260-arf-kit-review.html

Dharmik


Dharmik

Real fun of flying FPV. Now i can fly FPV in small alley without any problem. No recording cam attached yet. Sony CCD cam gives good visibility in night. I have practiced so much and it seems i have gained enough confidence for outdoor adventures. Really good platform for newbies and FPV lovers. Planning to put 1500mAh battery on it to see if i can get more fun out of this small wonder.

ashimda

1500mAh will not give much improvement in flight times. weight is an enemy of these small quads.

Dharmik

Nice to see twin brother together. Hmm.. seems will have to stick with 1250mAh then. Btw putting all stuff on this small machine is big challenge but happy with its performance. Hard to control in srtrong wind though. Hope you are doing good with your bird.

ashimda

I tried the KK2.1 and the multiwii, but with my non existent skill, I finally plonked on a Naza lite. The mini now flies amazing. Even in 20km/hr winds it is rock steady. In fact my daughter is now learning to fly.

chintal

Sir plz send/post a vid
It us flying perfectly because it is dji....
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ashimda

Will post a video soon. The Naza Lite really does make you look better than you are.

chintal

V2 much more stable next time make a quad with v2 sir
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Dharmik

Added some cool white LEDs on the front side. During night FPV it might add extra visibility as well. I will test it soon.

Dharmik

so i got two blade props few days back. i have modded this kit a bit. since fpv cam was unable to fit between two main sheets due to height difference i had to put some metal washers to increase height. now it fits perfectly and rock solid without fasterners. i will further use this quad for fpv practice till i build and complete my bigger quad. check build log of that quad here.

http://www.rcindia.org/multirotors/custom-designed-xtremex-v2-fpv-quadcopter-frame/

http://rcsci.blogspot.in/2015/01/custom-designed-xtremex-v2-fpv.html

250 size fpv quads becoming very popular these days due to their small size and agility. you can easily carry them to the feild in a bag.

aman1256


satyagupta

thats good Dharmik bro, how good are these motors? to they have the punch in them? Now a days many buy either emax or dys 1806.

I personally love DYS 1806 ;)
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Dharmik

#69
Hi Satya bro,
i just checked your store and found that this ARF kit is no longer listed there(maybe i missed). This is really nice kit for newbies having dreams to fly like juz and charpu. if you can bring qav250 or similar kit on store then it would be nice. i just noticed that motors are not capable to lift sj1000 & gopro kind of cams. they struggle to lift the load with complete fpv gear. however mobius or wingcam would be fine.

satyagupta

Yea Dharmik, it was not much of a sale :( so had to pull it off. I guess very less customers prefer something custom. On the other hand very much similar kit h220 is selling like hot cake. Just different frame and motors.

Yes then 1804 are little less power but they have good efficiency. I would suggest you to use emax 1806 or dys 1806 (dys my fav) they have lot of power very agile.
one stop for multirotor needs:
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anilntny

I had some queries regarding h220 ,sent to your pm.