New video! Elfvik FPV meeting

oktober 28th, 2011 | Posted by admin in FPV Videos - (0 Comments)
elfvikfpvmeeting

As an FPV-pilot I’m used to get up early in the morning, take my plane and the rest of the equipment out and drive to a place where I can sit by myself. I’ve always thought it would be so much fun to fly with other FPV-pilots but they’re not that easy to find… This day I was invited to Lidingö (Elfvik mfk) to fly with two other pilots.

We met up late in the morning and rigged all the things up, looked at eachothers planes and ground stations. It’s so much fun to see how other pilots have solved problems and I got a lot of tips/hints during the day. We were lucky with the weather since it was sunny and warm but it was quite windy and the winds increased the longer the day passed. So we were just able to fly two lipos each. The rest of the time we spent talking and laughing:)

Björn made a sightseeing for us two since we were unfamiliar with the area so we could just sit down, relax and get to fly with his easystar thanks to the video splitter. Second flight (first for me) I flew by my self to get familiar with Elfvik and on the third flight me and Björn flew together at the same time. This was a completely new experience for both of us and it was so much fun! We found out pretty soon that the sky is HUGE since it was really difficult to find each other. But at one point I saw his easystar only a couple of meters away. If I had travelled a bit faster we would probably have hit eachother in mid air:)
The air-to-air flight starts from 01:51.

Hope you enjoy the video.

New video! FPV Wind turbines

oktober 26th, 2011 | Posted by admin in FPV Videos - (0 Comments)

There are a lot of FPV-videos taken near wind turbines. Ever since I started with FPV I’ve wanted to fly near them too and this day I had the opportunity to do so. I decided before I took off to not fly to near them. They are huge, their props spins fast and they are very very expensive. Even though my plane is quite small I could probably damage them so I thought it was better to stay at a safe distance :)

This video was recorded the same day as the ”FPV Sea by the fields” video.
I hope you enjoy the video as much as I did recording it.

New video! FPV Sea by the fields

oktober 26th, 2011 | Posted by admin in FPV Videos - (0 Comments)
seabythefields

This was a perfect day to fly FPV. Sunny and no wind. The location is called Fulltofta which is located in Skåne, Sweden. This was the premiere test for my ny camera RMRC-540 (videolink only). I’ll post a photo of how I made the solution for this. This turned out to be really good and the camera is just brilliant.

The small vibrations in the video is not caused by wind as you might think, I did so the first time I used it so I didn’t mind it. But they occured only because of the gain was set to high…

New video! FPV Yellow trees

oktober 10th, 2011 | Posted by admin in FPV Videos - (0 Comments)
yellowtrees

Probably one of my best flights so far!

tricopter-crashed

I think most of my viewers have seen my latest crash with my tricopter. Since I’ve been building another FPV plane I haven’t got any time to figure out what really caused the crash until tonight. My tricopter have been resting under my bed for the last couple of weeks and it felt so good to see it again. It didn’t look as bad as I remembered but I still need to rebuild a lot in order to improve the platform.

 

 

 

 

 

 

 

 

 

 

 

 

 

It doesn’t look that bad…

 

 

 

 

 

 

 

 

 

 

 

 

 

What are you looking at? Clouds???

 

 

 

 

 

 

 

 

 

 

 

 

 

Rear boom were bended and the transmitter whip antenna broke apart.

 

 

 

 

 

 

 

 

 

 

 

 

 

This motor mount have seen better days:)

 

 

 

 

 

 

 

 

 

 

 

 

 

It isn’t supposed to be mud here I think… It might help to absorb the vibrations though…

So what caused this crash? As far as I know there are two possible reasons:
- The first one is if there were any loose connections caused by vibrations. I haven’t been able yet to check all the connection but I’ll make sure to check them multiple times when I make my next tricopter.
- The second reason (and the most likely) is that the setup of the esc’s was wrong. I’ve checked all three of them with my program card and this was my setup during the crash:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1: Off – correct
2: Ni-xx – correct
3: Soft-cut – correct
4: Middle – WRONG!
5: Very Soft – wrong (but this didn’t cause the crash)
6: Low – wrong (but this didn’t cause the crash)
7: —
8: Off – correct

(I’ve compared my values with RCExplorer’s Tricopter 2.5)

I think the lipo cut off value caused the crash. If I found something else that was wrong with the tricopter I’ll write about this later on. Now I’m waiting for new parts to be able to build David Windeståhl’s (RCExplorer) Tricopter 2.5. I hope to get them soon!

New video! Skywalker Maiden Flight

oktober 3rd, 2011 | Posted by admin in Uncategorized - (0 Comments)
skywalker-maiden

Last day I made the first flight with my Skywalker EPO V4. I had a bit of a struggle to keep it up in the air at first due to wrong center of gravity (cg). Even though I had my Gopro Hero HD mounted close to the nose, a 4S 4000 mAh lipo as far to the nose as possible the plane was still rear heavy. I had to take it down and re-arrange my position of the transmitter battery and after that the plane behaved better. Before next flight I’ll make sure to spend more time on finding out the correct cg. I’ll also try out the 9×6 prop to see which one I like best.

What have I learned from today?
- Skywalker is a huge plane capable of lifting really heavy load.
- I’ll recommend the FY30-A stabilization system to everyone :)
- EZOSD is an awesome OSD and tool!
- FPV is fun, fun fun! :)

New video! Tricopter Grasseater

oktober 2nd, 2011 | Posted by admin in FPV Videos - (0 Comments)
tricopter-grasseater

This will be my last tricopter video for a while … I got plenty of vibrations during the flight (unfortunately I couldn’t see them in my Fatsharks). Since I’ve been building my Skywalker the last couple of weeks I hadn’t got any time to find out what really went wrong with the tricopter. Some friends of mine had told me that it probably happened due to wrong low voltage setting on the esc’s. Others thought there were some loose connection as a result of all the vibrations.

I’ve ordered a lot of new parts now in order to build RCExplorer’s Tricopter 2.5. This time I’ll use wooden booms instead of aluminium profiles.

I’ll try my best to find out what really happened with my tricopter when I got more time. Now it’s resting under the bed :)

Skywalker Build Part 3

oktober 1st, 2011 | Posted by admin in Guides - (0 Comments)
gopro hero

The images below will be the last build photos of my Skywalker. I’m finally done with the build.

 

 

 

 

 

 

 

 

 

 

 

 

 

Rudder and elevator servos glued in place.

 

 

 

 

 

 

 

 

 

 

 

 

 

Plastic control horn mounted and the push rod is in place. You’re really on your way when you see the rudders move.

 

 

 

 

 

 

 

 

 

 

 

 

 

I found some servo extension cables in my box with mixed RC things and those two seems to be perfect for the aileron servos.

 

 

 

 

 

 

 

 

 

 

 

 

 

I wanna be able to replace the cable if the connection gets bad and therefore I just covered it with white tape. It’s not super pretty but it works.

 

 

 

 

 

 

 

 

 

 

 

 

 

The cut out part is for the servo extension cable from the aileron.

 

 

 

 

 

 

 

 

 

 

 

 

 

Hot glue is perfect for this job. This picture shows the glued aileron extension cable.

 

 

 

 

 

 

 

 

 

 

 

 

 

All servos and cables are plugged into the reciever and now the fun part begins. Here I’m setting up the FY30-A stabilization system.

 

 

 

 

 

 

 

 

 

 

 

 

 

This is where I’ll place the reciever. I used a tooth pick to make holes for the two reciever antennas.

 

 

 

 

 

 

 

 

 

 

 

 

 

Velcro is awesome! No doubt about it.

 

 

 

 

 

 

 

 

 

 

 

 

 

I found these thick double sided tapes in the FY30-A box and I thought it might be a good idea to place them in the vibration absorbing plate.

 

 

 

 

 

 

 

 

 

 

 

 

 

The reciever and FY30-A mounted in place. Try to place the stabilization unit as close as possible to the center of gravity since this will increase stability.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Skywalker is a huge plane. I’ve mounted the FY30-A and my reciever and there are much room left for the rest of the electronics:)

 

 

 

 

 

 

 

 

 

 

 

 

 

I wanna keep the cargo of my plane as clean as possible. I don’t like when there are cables all over the place and when everything looks more or less like a mess. I couldn’t find a better place to mount the current sensor for the EZOSD than in the ceiling of the cargo space. Velcro FTW!

 

 

 

 

 

 

 

 

 

 

 

 

 

One thing that I really like about the Skywalker is that is has a defined place to mount the video transmitter.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Do I need to mention it? Velcro again:) I might use a zip tie to secure the video tx even better. Notice the white tape to support the video cables.

 

 

 

 

 

 

 

 

 

 

 

 

 

I used two dubro hinges/cargo door.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EZOSD in place and the rubber band anchors are glued. I’m getting closer now.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Due to my placement of the EZOSD I had to cut out an opening for the cables in the original cockpit.

 

 

 

 

 

 

 

 

 

 

 

 

 

I’ve made two of these cargo door locks (one for each side) in 5 mm balsa tree. The cut out part in the middle is for a magnet.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Magnet is now glued in place. This is the side that will facing towards the inner part of the cargo space.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nothing special here. I just glued the included piece of wood on the cockpit.

 

 

 

 

 

 

 

 

 

 

 

 

 

Cargo door magnet. I used a soldering iron to melt a hole for it.

 

 

 

 

 

 

 

 

 

 

 

 

 

Cargo door stoppers glued in place. I use a glue that needs a lot of hours to harden and therefore I use a lot of tape:) Notice that the magnet are ”hidden” inside of the balsa tree.

 

 

 

 

 

 

 

 

 

 

 

 

 

The original cockpit of the Skywalker has a hole in it where you’re supposed to mount a pan servo I think … I’ll not use a pan servo with this cockpit and I since I wanna place the Gopro Hero HD cam as far to the nose as possible I had to drill a hole in it to support the double sided tape. Almost 40-50% of the Gopro mount will be placed over the hole in the cockpit and I don’t wanna lose my camera:)

 

 

 

 

 

 

 

 

 

 

 

 

 

This is how it looks now. I think the camera and the cockpit will be the only things that will stay in place after a crash:)

 

 

 

 

 

 

 

 

 

 

 

 

 

This is the underside of the Gopro mount. I used 5 mm balsa and some washers to support the lock nut.

 

 

 

 

 

 

 

 

 

 

 

 

 

Tata! The camera is in place and now it’s just the long wait for first premiere flight. I’m so looking forward to this.