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HomeAircraftHelicopterAerial Photography and Video › Looking for information from Trex 600 stretchers
06-03-2013 01:18 AM  5 years agoPost 1
Fat Corgi

rrNovice

Sydney, Australia

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Hi there,
Finally putting together an AP ship using an older TRex 600cf, and was looking for some guidance interms of electronics. Am going to stretch the bird to 700 blades, and upgrade the bearing blocks and main gear to cope with the 12s system I intend to run on the machine. I'm looking for feedback from people who have run a similar setup before. Will have a photoshop one 2x gimbal on the front and a NAZA-H system for flight stabilisation.
Thinking of a 530kv motor from scorpion and a 120A HV esc from Castle creations.
I don't have a massive budget, so am looking for parts to accommodate those parameters, and seeing as this is my first ap bird, would rather hone my skills before shelling out on a larger bird and high end components. Still have a flybar, and will most likely keep that as well.
Thoughts?

Thanks in advance guys

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06-04-2013 11:53 AM  5 years agoPost 2
JoeB1

rrApprentice

Ireland, Wicklow

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I stretched my 600 with Naza H 12 S.
Spin Semi-Symmetrical 690 blades.
RJX HV servos all round (4).
RJX FBL head....pass on this not unless you want to spend time on it.
Zippy batteries.....2.5 years and still holding full charge!
KDE 115 mode 1 main. I might try the 112 slant next. The straight cut teeth are very load.
YEP 120 HV esc......can't say a thing wrong with this. Buy it!
Sk3 480 kv motor......with 80% throttle I am at just over 1750 rpm with 115 main and 11 on pinion.
105mm TIG Carbon Fiber Tail Blade ( HK)...good blades.
Main thrust bearing blocks with the thrust bearing removed from the top bearing block and another radial bearing put in. The head is smooth and solid.
I upgraded the tail pitch to the doubl pitch slider setup. I don't trust the usual single pitch slider with a bird this big and heavy.
I am running 2S LiPo for electronics.
Hold off on the gimbal for a while. That's if you have not bought it already. The new kid on the block is brushless gimbals. I read PS themselves are making one. From what I have seen with smaller GoPro brushless gimbals is that the quality of footage is better and the gimbal is a lot cheaper. Get your stretch rig up and running and then worry about the camera rig.

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06-04-2013 12:34 PM  5 years agoPost 3
Fat Corgi

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Sydney, Australia

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Thanks for the info, I really appreciate your time. That setup sounds perfect. Can I ask what removing the top most thrust bearing and replacing it with another radial achieves?

"Hold off on the gimbal for a while. That's if you have not bought it already. The new kid on the block is brushless gimbals. I read PS themselves are making one."

Very interesting indeed. Thanks for the heads up.

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06-04-2013 05:46 PM  5 years agoPost 4
Helicek

rrVeteran

istanbul - turkey

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Hi JoeB1,
I need an esc for my 800 AP heli and I plan getting a Heli Jive 120 which sells around US$580.00. The YEP 120A HV is very tempting with it's US$130.00 price tag. When an esc fails/stops while doing AP that results in a hopeless auto mean a new heli, new mount and a new camera (I have already experienced 2wice in the past).
I would like to know if this esc is good.

How long have you flown the YEP 120A HV esc for?

How do you set it up? (PC or other)

I have checked the hobby king web site and it carries a 4-14S LiPo, 51.8v label on it confuses me cause 14S makes 58.8v.

I will be very happy if you be kind to let me know about your experience.

Cheers,
Ahmet

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06-04-2013 07:20 PM  5 years agoPost 5
BallisticBlades

rrNovice

Tri-Cities, WA- USA

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I am using my 600CF for AP. Very basic setup with a camera mounted in the nose. I am thinking of doing the same as you, stretching it and going 12S with a Gimbal. Would you mind posting some pics of it? I am especially interested in where you re-mounted the batteries.

Thanks!

BB

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06-06-2013 10:05 AM  5 years agoPost 6
JoeB1

rrApprentice

Ireland, Wicklow

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Fat Corgi....The heli will not be used for inverted flight so there is no need for the top trust bearings. Having the two radial bearings still helps as it reduces slop.

Helicek.......you set it up using TX or programming card which I would get. I have easily 50 flights on mine. This is a DIY project so a lot of time is spent making stuff and flying it. I don't think it will pay my to do this full time. After 8 mins of hovering the ESC comes down cold. Early 20 c's . I actually can't tell if it got any hotter! The slow spool up is 28 seconds which is great.

BallisticBlades.....I have two "sets" of batteries. I'm getting another soon. You can see in the picture where they are. I also have a 4000mah RX battery behind the motor. I know it's big but my camera is light...500g. I install the RX battery, then the one on under the boom. Then I install the one underneath and only use one strap. I then install a servo horn into the hole where the head button goes. This horn has a wire looped through the two horn holes so I can use it as a handle and lift the heli. There is a spirit level on the rear boom so I can move that bottom battery to get balance spot on every flight. The is use the second strap on the battery. It's simple but it works.

Any more questions just ask.

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06-06-2013 08:10 PM  5 years agoPost 7
BallisticBlades

rrNovice

Tri-Cities, WA- USA

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Thanks Joe. Where would I start looking for the setup for a Gimbal? It's a little overwhelming until you actually get the ball rolling! I'd like to find a used Gimbal setup to strap on my 600 and learn on...

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06-06-2013 08:53 PM  5 years agoPost 8
JoeB1

rrApprentice

Ireland, Wicklow

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I know what you mean. There is a few gimbals out there for smaller cameras like the GoPro but more are jumping on the band wagon. Here is one for SLR cameras up to 1kg I was reading up on yesterday....

http://infinitygimbal.com/infinity-gimbal/

Keep an eye out in the adverts for guys selling their gimbals if you want a servo run one cheap. I'm sure lots will be getting the brushless ones now.

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06-15-2013 08:42 AM  5 years agoPost 9
Fat Corgi

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Sydney, Australia

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So I've managed to grab second hand Kontroniks Jive 80HV ESC, for this project. 12s I was looking at the Kontronik Pyro 700-450. Aiming for a lower headspeed, and apart from the Xera's (which you cant't find anymore) is there any other motors with lower Kv ratings that would suit the Jive?

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06-17-2013 06:54 PM  5 years agoPost 10
BallisticBlades

rrNovice

Tri-Cities, WA- USA

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Great, thanks Joe. Which FBL head and dampener are you running? I just switched from Flybarred to DFC because I also use my ship for 3D. I found out it's a pretty aggressive head! Any issues working out the vibration? Any tricks to getting a smooth ride?

Thanks again,

BB

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06-17-2013 11:25 PM  5 years agoPost 11
JoeB1

rrApprentice

Ireland, Wicklow

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Fat Corgi...most go for scorpion. Any motor should suit. There is not much in a motor apart from the quality of parts used.

BallisticBlades....I have the RJX head. I would not recommend it. I did a video with issues I had with it and then found some more after the video.

Watch at YouTube

As for vibration I have spent a lot of time getting rid of vibs.....and when you think you are finished another pops up due to bearings or something! If you have a smart phone get a vibration app and mount your phone to your heli to measure vibs before and after. It's really handy. While your at it get a spirit level app which is handy from levelling your heli to pitch setting. I also used the "cable tie " method to fine tune motor balance. Look it up on youtube. To balance the tail hub and tail blades I made a quick magnet balancer which is very accurate. I like to thinker like most modelers. Here is a video of it if your interested. Hobby king also has the magnets or you can can buy a balancer...but where's the fun in that lol

Watch at YouTube

Having a well balanced heli makes all the difference. The E-stab will thank you for it!

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06-18-2013 09:48 PM  5 years agoPost 12
BallisticBlades

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Tri-Cities, WA- USA

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Thanks Joe! Appreciate your time.

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06-19-2013 07:37 PM  5 years agoPost 13
BallisticBlades

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Tri-Cities, WA- USA

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I just went out and filmed last night for the first time since I switched my 600 to FBL. I'm using the DFC head. It's actually not that bad, but had some jello effect. The blades are balanced, where would you start first to try and resolve the jello effect? I'm using a Liquid Image Ego camera solid mounted to the front of the battery tray. I really need a gimbal, and a multi-rotor, but being in College puts a damper on the r/c budget!

Thanks again,

Brett

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06-19-2013 07:38 PM  5 years agoPost 14
BallisticBlades

rrNovice

Tri-Cities, WA- USA

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Also, do you know the name of the vibration app? I'm using an Android Galaxy S III

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06-19-2013 09:21 PM  5 years agoPost 15
JoeB1

rrApprentice

Ireland, Wicklow

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The one I found good was Smart Vibration. I took the head and tail off and started from there balancing the motor with everything off first, then the tail hub, tail blades, tail hub with blades, then put the head on. Taking reading before and after everything.
My pictures are sharp, even using 10* zoom, but my video is bad. I don't have jello but low end vibes. The video is jumping up and down and I think it is from the downwash of the blades but seeing as the pictures are good it could just be the camera. I'm using Panasonic FZ150. I have a new scale 500 hughes army heli sitting there not in use I have for sale which I might buy a camera with but I might just build a Hex and try this FPV lark!
Fat corgi sorry for going of subject....

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