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.

Skywalker Build Part 2

september 25th, 2011 | Posted by admin in Guides - (0 Comments)
motor mount

 

 

 

 

 

 

 

 

 

 

 

 

 

A good and easy way to fix the wings is to use rare earth magnets. It’s a bit difficult to see on the picture but there is one on each side of the wing.

 

 

 

 

 

 

 

 

 

 

 

 

 

I routed two motor mounts (the one in wood is original). The ones I did are slightly larger. They are made out of 2 mm aluminium.

 

 

 

 

 

 

 

 

 

 

 

 

 

I think the elevator rudder is ways to wide and thin to be unsupported by a carbon fibre strip. Therefore I bought a 3×1 mm strip that I used to strenghten it up.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is a close up on the elevator mod.

 

 

 

 

 

 

 

 

 

 

 

 

 

The original elevator rudder hinge felt fragile and therefore I cut it out and glued three dubro hinges instead.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is a close look at one of the glued dubro hinges.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is how my motor mount will work. I think this will make it really strong (I really don’t like the idea of just attaching the motor mount with glue).

 

 

 

 

 

 

 

 

 

 

 

 

 

Cargo door open. This plane is huge!:-)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is my own soultion for the EZOSD. I haven’t seen it anywhere else before. By mounting it like this I can use all three buttons and the gps module will have almost free sight. I hope this will work:-)

 

 

 

 

 

 

 

 

 

 

 

 

 

I have a cable for my Iphone so that I can find my model when I’ve crashed… But since the 1,3 GHz doesn’t support both telemetry and audio at the same time I had to move the audio cable from the fourth to fifth terminal.

 

 

 

 

 

 

 

 

 

 

 

 

 

Wohoo! I’ve waited a long time for this!

 

 

 

 

 

 

 

 

 

 

 

 

 

The last thing I did tonight was to mount the plastic control horn to the elevator rudder.

Skywalker Build Part 1

september 20th, 2011 | Posted by admin in Guides - (1 Comments)
servo cables all the way

Plane:
- Skywalker EPO with reinforced wings
- Brushless motor 3542/6T 920 kv
- ESC 80A 3-6S Professional S-BEC 3A
- Hyperion 4S 4000 mAh
- x4 HS-65HB servos

FPV:
- Gopro Hero HD
- 1,3 gHz 300 mW video tx with inverted v antenna (powered by a 3S 500 mAh Lipo)
- 1,3 gHz video rx with 8dBi patch antenna
- EZOSD
- FY30-A stabilization system
- DT-3K head tracker (x2 HS-65HB servos)
- Fatshark base goggles

 

 

 

 

 

 

 

 

 

 

 

 

 

The first cut was done today and it felt great! As you can see I did cut out the ailerons first.

 

 

 

 

 

 

 

 

 

 

 

 

 

Have you ever read articles or even seen videos on RC-pilots snapping their Skywalker wings of in mid-air? I have, and something has to be done in order to prevent it. I bought 6×1 mm carbon strips and mounted two 350 mm long ones in each wing. Now the carbon fibre reaches almost the tip of the wing. If the wing breaks now I better find a new hobby;-)

 

 

 

 

 

 

 

 

 

 

 

 

 

Carbon strips glued in.

 

 

 

 

 

 

 

 

 

 

 

 

 

I bought the Turnigy servo tester recently and already I found a use for it:-) To find the neutral position of the servos was as easy as it could be.

 

 

 

 

 

 

 

 

 

 

 

 

 

Test mount of one of the HS-65HB servos. Notice that I’ve cut out for the servo arm.

 

 

 

 

 

 

 

 

 

 

 

 

 

I cover the servo with tape so that I doesn’t have to glue directly to it.

 

 

 

 

 

 

 

 

 

 

 

 

 

Aileron servo glued in place.

 

 

 

 

 

 

 

 

 

 

 

 

 

Plastic control horn in place.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rudder was cut out. A key for successful FPV-flights is to get rid of the vibrations caused by weak materials. Therefore I choosed to reinforce the rudder section as well. Once again I used 6x1x150 mm carbon strips (one in each half).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The carbon strip of the tail section is now glued in place.

 

 

 

 

 

 

 

 

 

 

 

 

 

This might not be the most interesting picture. I just wanna show you that I cut out some material for the servo cables.

 

 

 

 

 

 

 

 

 

 

 

 

 

Rudder and elevator servos are glued in place and I used hot glue to attach the servo cables/connectors to the EPP.

 

 

 

 

 

 

 

 

 

 

 

 

 

It ended up quite good I think since I found a way to the cockpit:-)

 

 

 

 

 

 

 

 

 

 

 

 

 

This is as far as I could get this weekend. The last thing I did was to glue in the carbon fibre rod (included) to the tail section.

 

 

 

 

 

 

 

 

 

 

 

 

 

A good and easy way to fix the wings is to use rare earth magnets. It’s a bit difficult to see on the picture but there is one on each side of the wing.

 

 

 

 

 

 

 

 

 

 

 

 

 

I routed two motor mounts (the one in wood is original). The ones I did are slightly larger. They are made out of 2 mm aluminium.

 

 

 

 

 

 

 

 

 

 

 

 

 

I think the elevator rudder is ways to wide and thin to be unsupported by a carbon fibre strip. Therefore I bought a 3×1 mm strip that I used to strenghten it up.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is a close up on the elevator mod.

 

 

 

 

 

 

 

 

 

 

 

 

 

The original elevator rudder hinge felt fragile and therefore I cut it out and glued three dubro hinges instead.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is a close look at one of the glued dubro hinges.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is how my motor mount will work. I think this will make it really strong (I really don’t like the idea of just attaching the motor mount with glue).

 

 

 

 

 

 

 

 

 

 

 

 

 

Cargo door open. This plane is huge!:-)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Here is my own soultion for the EZOSD. I haven’t seen it anywhere else before. By mounting it like this I can use all three buttons and the gps module will have almost free sight. I hope this will work:-)

 

 

 

 

 

 

 

 

 

 

 

 

 

I have a cable for my Iphone so that I can find my model when I’ve crashed… But since the 1,3 GHz doesn’t support both telemetry and audio at the same time I had to move the audio cable from the fourth to fifth terminal.

 

 

 

 

 

 

 

 

 

 

 

 

 

Wohoo! I’ve waited a long time for this!

 

 

 

 

 

 

 

 

 

 

 

 

 

The last thing I did tonight was to mount the plastic control horn to the elevator rudder.

Review: Deluxe Crimping Tool

september 16th, 2011 | Posted by admin in Reviews - (0 Comments)
crimptool

By making your own servo cables with the perfect lenght your RC model will look better, be lighter and you’ll get rid of all the unecessary connectors. It’s better to have one cable with two connectors than two cables with four connectors. By keeping it simple there will be less risk that you’ll end up on the ground if when your elevator stopped working due to a bad connector …

I read somewhere that it’s easy to make servocables and the only tools needed was a wire cutter and a pair of pliers. What should have been mentioned is that it requiers a lot of technique in order to make good connectors. Servo cables are tiny and the process of making a complete cable with connectors is long. At least for me as I’m still a newbie:-) I made four cables for my tricopter but I think it was their fault that I lost thrust in one of the motors in midair. This was the reason that made me buy a real crimp tool.

I did some research on which crimp tool that is best and finally I found one on Hansenhobbies webshop. This one is called Deluxe Crimping Tool and is their best one.

You can tell that it’s very well built and professional thanks to its weight (430 g). The crimp tool is almost 21 cm long and is very easy and comfortable on the hands. The best part with this tool is that it got a ratcheting hinge that lets you look in the terminal first, then the wire. This is truly a good help to make perfect crimps! The tool has got two different sizes of teeth, the small one is for servo connectors and the slightly bigger one is for BEC/JST terminals and Tamiya connector terminals.

Pros and cons:
+ Price
+ Quality
+ Result

FPVStockholm: 5/5