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Old Apr 01, 2012, 11:32 AM
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Denominator's Avatar
Norway, Hedmark, Hamar
Joined Sep 2009
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Help!
A few pics, a video and some questions :)

Now, this is where I'm at and I'm quite pleased











I have done my best to make the adjustments to the KK5.5 board with KK4.7X firmware. But I think I got some more adjusting to do! It OK on hovering but it drifts some and it seems to drop through some. I don't understand why it's dropps when I have it at steady throttle when hovering.

Here is a short video:
http://youtu.be/LK2VjCcjSWw?hd=1

And now to the short part, I use a 2200mAh 3S lipo, and what you see in the movie is about what I get out of a flight when hovering. I understand that hovering use more power then a real flight will do, but I still thin it's a bit short.
How big do you think I can go for a battery with this setup?
Do the hobbywing ESC handle 4S or must I stay with 3S?

Any sugestion for pot trimming to make it more stable, less drifting and not drop down all the time?

Have a nice sunday
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Last edited by Denominator; Apr 01, 2012 at 12:58 PM.
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Old Apr 01, 2012, 02:17 PM
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uk. northampton
Joined May 2009
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Although the stablising legs look good, I would loose em, too big and added weight will reduce flight time and performance. Nice tidy build! like it, is it an x400 frame?
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Old Apr 01, 2012, 02:42 PM
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Norway, Hedmark, Hamar
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That is a set of training gear for a 500 helicopter and weighs about half of a GoPro Camera.
It's only thin carbon legs with styrofoam balls at the end, it weighs next to nothing. It's only for hovering practice and goes off as soon as I have it dialed in and "master" the hovering.

It's a X525 fram. Bought as a kit from ebay. Only thing i added was the battery and Tx.

Thank you
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Old Apr 01, 2012, 02:50 PM
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uk. northampton
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Think you will find it flys far better without it, give it a try.
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Old Apr 01, 2012, 03:19 PM
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Norway, Hedmark, Hamar
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I'll see where I end up

Anyone else with some helps for my other questions?
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Old Apr 01, 2012, 05:56 PM
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try removing some weight. what is your throttle range for hovering?

I have the same problem but its a yaw problem, mine would keep giving me surprices and would turn about 30 degrees, but thats in multiwii thou xD
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Old Apr 01, 2012, 05:57 PM
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Quote:
Originally Posted by Denominator View Post
I understand that hovering use more power then a real flight will do
I don't think so, forward flight needs more current than hover.
3000 to 4000mAh might be suitable, depending on the load carried.
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Old Apr 02, 2012, 08:06 AM
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Tres Wright's Avatar
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Quote:
Originally Posted by Denominator View Post
And now to the short part, I use a 2200mAh 3S lipo, and what you see in the movie is about what I get out of a flight when hovering.
So, 3-1/2 minutes of hovering? That's really short. How much does it weigh? As the others said, you might want to try ditching the training gear, the weight savings will help. Also, do you know for sure the pack is depleted? What mah are you putting back in?

Quote:
Originally Posted by Denominator View Post
I understand that hovering use more power then a real flight will do, but I still thin it's a bit short.
Like Mortimer said, hovering uses less power than flying around.

Quote:
Originally Posted by Denominator View Post
Any sugestion for pot trimming to make it more stable, less drifting and not drop down all the time?
Turning down the P pot down will help (if you're running 4.7 then "down" should be clockwise). If you turn it down too much then it starts ballooning in fast forward flight, but if you're just hovering for now then I wouldn't worry about it.
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Old Apr 02, 2012, 08:56 AM
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Deutschland
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You really assure choosing the right battery for your setup. In case, the (real) discharge rate issn't sufficient, the battery will broke almost at half of its capacity.
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Old Apr 02, 2012, 09:27 AM
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Quote:
Originally Posted by Mortimer View Post
I don't think so, forward flight needs more current than hover.
3000 to 4000mAh might be suitable, depending on the load carried.
I have the same frame and a 2.2Ah is enough to carry a gopro and FPV gear for 10 minutes. If he's conking out at 3.5 minutes, then something is very wrong with one aspect of the setup; I would probably say the battery. No need to go up to 3Ah or 4Ah though.
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Old Apr 02, 2012, 02:30 PM
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Norway, Hedmark, Hamar
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Yes, It must be the batteries. I have three batteries of the same type used earlier in my Maxi Swift flying wing. I get alot more flying time from that wing. But it only has one kv900 motor, and two servoes. I look at the other 2200 mAh packs that some guys on here use, and they look physically bigger then the 2200 packs I got. Mine are only 20C.
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Old Apr 02, 2012, 02:37 PM
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Joined Oct 2011
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LOL. not this X525 frame again! ones training gear removed you will loose weak landing legs and motor mounts very soon. good luck anyway! get 3.3 Ah nanotech lipo for 15 min flight.
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Old Apr 02, 2012, 02:44 PM
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Just checked now. I use a Hyperion EOS 0720i Super DUO3 to charge my batteries, and now they had put in 2061mAh on the last charge. I do have some led light strips under the frame, but that should not use that much power.
I have the same battery in my FG Monster 4x4, it has two servos for throttle and hydraulic brakes, on LARGE servo for steering, LED roof and bullbar lights, main front lights, drivning/brake lights and fog lights, at a total of 18 LEDs. When I have run out of fuel, about 45 minutes of using all the LED lights and the servos, it still has about 70% of power left in the lipo. So I don'tunderstand why I don't get a few more minutes of power with this quad.
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Old Apr 02, 2012, 02:49 PM
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Norway, Hedmark, Hamar
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Quote:
Originally Posted by man1024 View Post
LOL. not this X525 frame again! ones training gear removed you will loose weak landing legs and motor mounts very soon. good luck anyway! get 3.3 Ah nanotech lipo for 15 min flight.
Why would you come in here only to write that?
I had to start somewhere and this was a good and cheap entry. I see many people are satisfied with this frame, one here and on review videos on youtube.

I use the Nanotech 5.0 lipos in my TREX 600 BL, and I'm not very happy with those lipos.Major puffing after only a few flights!
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Old Apr 02, 2012, 04:18 PM
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Norway, Hedmark, Hamar
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Went over all the settings one more time. It had the motor braking on, turned it off and now it did 7.27 minutes of hovering. Still think that is a bit shorter then I would like, but it's over double the time of what it had.
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