Ranglers Skywalker 1900 (2014) Build complete with FPV tail cam.

Benny_H88 · February 18, 2015, 03:36:32 PM

On My SW 1900 i run my vtx up the front as a FPV pod type setup, A dipole on a long sma extension out on a wing tip, with the open LRS rx in the top section, and then the gps is on a screened cable extension (old usb phone charger lead) out on the little plywood mount down the boom. No problems with interference, loads of range and crystal video.

P.S what batteries will you be using? FYI i run a pair of 4s 5200mah multistar batteries, with careful throttle use i can expect to get over an hour flight times, although so far ive only kept it up for 45min. i did run it with 6000mah 4s but i found it really seems to like flying on the heavier side. Rudder has greater authority, better penetration in a breeze, less floaty.

rangler · February 18, 2015, 04:25:00 PM

Setup will be Tiger 830KV motor and a 12x6 APC prop.

I've calculated i should be able to use either my 3S8400 lipos or 4S6600mah or up to 4S10000mah.

AdamG · February 18, 2015, 05:08:30 PM

I get approx 30 mins flight from a 5000 4s.

I'm going to try 2 x 5000 4s soon and will post results

Benny_H88 · February 18, 2015, 06:30:34 PM

i run 2 x 4s 5200 and can confirm that the 1900 flies beautifully setup that way!

FPVSteve · February 18, 2015, 09:49:41 PM

I'm going to run 3x2200mAh up front .. 2 in parallel for the motor, and one to power the video / lights / etc.

Hoping it balances nicely :)

rangler · February 18, 2015, 09:58:21 PM

Glad this is getting some discussion :)
Done a little more tonight, added the vector OSD and motor.

http://rangler.co.uk/sw-1900-vector-installation/

AdamG · February 18, 2015, 10:32:25 PM

Looks like you have a lot more space in your version of the Skywalker :o

UAV Aviation · February 18, 2015, 10:33:15 PM

Very nice build!
Regarding the separation between 1,3 video and UHF control, I never had problems with interference with those two. I had problems with GPS reception, due to the 1,3 video. On my X-8 I have them 1 meter apart and that works fine. I have flown it on a X-5 and had lots of problems with GPS reception, but none with UHF. Good luck!

AdamG · February 18, 2015, 10:53:49 PM

:)

UAV Aviation · February 18, 2015, 11:34:41 PM

Looks close to me.....but if it works it works ;) Anyhow, if you get problems with GPS reception, the 1,2G is the reason. I am running a FY system, maybe a bit more sensitive but with FY this wll not work. I 'am changing out the FY for MFD though.

rangler · February 18, 2015, 11:57:46 PM

From memory the recommendation is to keep items at least 1/2 wavelength apart so
1.2Ghz = 25CM full WL so 1/2 that is around 13CM.

Keep all your listening devices together (RX & GPS)
And all your TX together (i.e. VTX)

AdamG · February 19, 2015, 01:19:40 AM

Quote from: UAV Aviation on February 18, 2015, 11:34:41 PM
Looks close to me.....but if it works it works ;) Anyhow, if you get problems with GPS reception, the 1,2G is the reason. I am running a FY system, maybe a bit more sensitive but with FY this wll not work. I 'am changing out the FY for MFD though.

Yeah works great for me, GPS signal never drops below 4 out of the 5 bars and it acquires it very quickly on startup :thumbsup:

Rangler thanks for that info, interesting :)

rangler · March 02, 2015, 08:30:45 AM

Well shes almost built, i added the tail camera and tested.
http://youtu.be/oN6Wbg8DVsI?list=UUYh7ftJV6jfQl37FYacI1fw

As you can see the 55deg viewing angle is a little narrow, so ive ordered a 4G nano camera which has a 90degree angle which should arrive this week.