Espritmodel.com Telemetry Radio
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Old Feb 26, 2013, 09:47 PM
MultiFreak
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United States, IL, Chicago
Joined Jan 2012
384 Posts
Trader Rating: 23
Sold
RTF WKM-based F450 with gimbal and FPV feed

WKM F450 flying blind again (8 min 14 sec)

WKM F450 FPV California US-1 coast (5 min 57 sec)

WKM F450 saugatuck 1100m climb (10 min 3 sec)

WKM F450 FPV Devils Lake (8 min 40 sec)

WKM F450 Devils Lake FPV 2km (7 min 22 sec)

WKM F450 Stiletto air to sea with Allan high speed pass and accidental dip (5 min 20 sec)

WKM F450 California US-1 bridge (2 min 53 sec)


This is probably my sadest sale but all good things have to come to an end. For financial reasons, I'm putting up for sale my trusty and only quadcopter

I pretty much maxed out everything that can be maxed out on a frame this size. I like the fact that I can put her in my carry-on and not having to check her in.

_ WKM: the IMU is hard mounted using double side servo tape, the GPS receiver is mounted on one of the arm. This allows the GPS receiver to be protected from any sort of crash.

_ F450 frame: I reinforced by doubling up the top and bottom plate. This also buys me a bit more room to mount stuff on the bottom plate. All screws were thread-locked. I will be including an extra complete frame for spare.

_ Avroto 2814 770kV short-shaft: these 4 were selected out of a batch of 8 for the least vibration.

_ DJI 30A ESC: pretty standard. nothing to say about these ESCs

_ Graupner 11x5: I have been flying with these all along. They give me about 18 mins hover on 4s 6000mAh. I recently tried out Graupner 12x6 and my hover time jumped to 21mins. However, I do like the fact that I can barely fit the 11x5 in my carry-on so I fly with 11x5 most of the time. Moreover, the machine has a lot of power from the 4 Avrotos. Ecalc gives 45% throttle at hover with the weight of everything + GoPro + 2 @ 4s 6000mAh

_ QuadFrame landing gear. I bought 2 of these and doubled up on the G-10 plate for a total of 4mm thickness. VERY VERY sturdy. I also bought the accessories plate so I can mount my VideoTx battery. This landng gear also allows me to fit 2 of 4s 6000mAh underneath. It can also fit 2 of 4s 10000mAh maxamp batteries. I got a 40mins flight time doing FPV one day when I got a chance to borrow these magnificent batteries from a friend
http://www.quadframe.us/collections/...legs-version-1

_ QuadFrame GoPro gimbal. Modified to fit a GoPro in its housing and modified to tilt 90 straight down
http://www.quadframe.us/collections/...-black-version

_ ther are 2 GoPro mounts, both are dampened with the green Zoky...(?) gel that gives no yello in video. 1 is on the frame bottom plate and another one is on the gimbal (duh)

_ There are LEDs all around. Very bright. One night when I were doing FPV on a camping trip, I lost my Spektrum signal at the 3.5km mark and I could spot the copter coming back to me from 3.5km. And it was not completely dark yet. I added a remote switch so you can turn on and off the LEDs via a switch on your Tx

_ There are 4 waterbuoys on the 4 legs that should support 1kg each, so combined they support arounf 4 kg which is around 9lbs, way more than the AUW. This give you a chance of recovering the copter in case you "landed" in water. I tend to fly around water a lot

_ Spektrum Ar10000 10-channel Rx with 3 sattlelites positioned in 3 orthogonal planes for best reception and a TM1000 telemetry module. Telemetry includes altimeter (mount below the frame, out of the prop wash so very accurate readings), temperature (sensor at the WKM IMU, just so that I won't fly under -5 degC as recommended), flight voltage voltage, and RPM sensor

_ ImmersionRC 600mW 5.8Ghz VideoTx. I added heatsinks for this. It doesn't get hot under the prop wash, but just that so I can have a bullet-proof video downlink

_ DragonOSD+ v2 with GPS, barometer and current sensor. A personal choice, I always liked them for their clean layout

_ The FPV downlink is all pre-wired for a GoPro 2 (support charging as well). Slide the GoPro into the mount, plug in the VideoOut and USB power supply and use the GoPro as the FPV camera. I have always flied FPV like this

_ All signal wires are fitted with ferrite choke so any RF interference is weeded out. No WKM interference (GPS cold locks in 35 secs), no video glitch and no servo chatter

_ I will also include a brand new ImmersionRC Duo5800 VideoRx as well as a 7" monitor (no blue screen) that I modified to have a 3s 1000mAh battery fitted inside. So truly a ARF-RTF pacakge. just add your own SpektrumTx and go fly, be it pure RC or FPV

I have built this machine with all my heart. And I am very proud as you can see. Every details have been paid great attention to. My philosophy is to overdo on everything and the end results have always been satisfactory

I've never had any problem with my machine. It has performed flawlessly ever since the day I invested in it. I have had about 30 flights on her and she performed remarkably well in all of them. Never been crashed, not even hard landing. Nothing has ever needed to be swapped out/replaced. I would like to keep her but based on the current situation, I have to let her go

Thanks for taking your time to read this. Please check out the videos and let me know if you have any question.

I would let her go for $1500 shipped CONUS. No international shipping. Sorry!
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Last edited by hththt; Feb 26, 2013 at 10:04 PM.
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Old Feb 26, 2013, 09:55 PM
When in doubt throttle out
zestyzsauce's Avatar
United States, KY, Louisville
Joined Nov 2012
539 Posts
Trader Rating: 32
dude your 2nd to last video makes my b hole clinch everytime your about 1 foot from the water...
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Old Feb 26, 2013, 10:02 PM
MultiFreak
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United States, IL, Chicago
Joined Jan 2012
384 Posts
Trader Rating: 23
forgot to mention that I will also include a brand new ImmersionRC Duo5800 VideoRx as well as a 7" monitor (no blue screen) that I modified to have a 3s 1000mAh battery fitted inside. updating the 1st thread now
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Old Feb 26, 2013, 10:10 PM
MultiFreak
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United States, IL, Chicago
Joined Jan 2012
384 Posts
Trader Rating: 23
Quote:
Originally Posted by zestyzsauce View Post
dude your 2nd to last video makes my b hole clinch everytime your about 1 foot from the water...
haha lol. that's a good way to describe the feeling
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Old Feb 26, 2013, 10:28 PM
casinojoe1203
United States, PA, Boalsburg
Joined Mar 2012
80 Posts
Trader Rating: 26
Pm sent
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Old Feb 27, 2013, 01:17 PM
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United States, NJ
Joined Oct 2011
84 Posts
Trader Rating: 4
that is a nice setup and your price is good for what you are getting. I just bought some of your props from you. to bad I'm almost finishing my last quad and alot of your equiptment I'm putting in mine. good luck in selling I know the new owner will enjoy it
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Old Feb 27, 2013, 04:05 PM
Registered User
Joined Jan 2007
142 Posts
Trader Rating: 5
It's true- I will!!
Quote:
Originally Posted by countryshooter View Post
that is a nice setup and your price is good for what you are getting. I just bought some of your props from you. to bad I'm almost finishing my last quad and alot of your equiptment I'm putting in mine. good luck in selling I know the new owner will enjoy it
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