Official Freewing 80mm EDF L-39 Albatros Thread

[Race 22 Crew]

Chocks yes. :) You can use the chalk to outline the crash for investigators . I hate auto correct.

[Hardway]

Great job!!! :Cool:

[Drifty]

Here`s some picts of my L-159 from the L-339 kit

[Hardway]

I got both tanks today! Each side one time in varible crosswinds... :(

[PhantomNut]

Does anyone have the blue paint code for some Home Depot or Lowe's touch up paint? Scraped up the tip tank today.

[Race 22 Crew]

The landing lights only work when the gear are down. Have you powered up the airplane and lowered the gear? I’d pull the tip tanks back off and check the connectors are still connected and the polarity is correct. Are your wing ribbon cables attached to the blue box? The lights power through these cables. The Red/Green Nav lights should work any time the battery is connected. With the tanks back off you could also use a multi meter and check for power at the connector on the wing side. If you don’t have power at that point work your way back to the fuselage. If you have power at wing tips, then you do have a tip tank issue.

[xviper]

Just finished assembly of L-39. Wing tip & landing lights do not work. Looking for suggested paths to testing and fix.

You know how they say, "Follow the money"? Well, follow the wiring. Start in the wing and check the connections to make sure they are solid and in the correct polarity and in the correct plugs. Then go all the way to where they plug into the control board. Wiggle them while the plane is powered up. If that doesn't work swap each one to a different plug for the lights. If they still don't work, then you can eliminate the wiring by using extensions to go directly from the first connection in the wing to the board. If that doesn't work, then it could be the board or the lights themselves are dead.
Never use a servo tester to test lights. It'll burn them out.

[Air Y Lee]

Just finished assembly of L-39. Wing tip & landing lights do not work. Looking for suggested paths to testing and fix.

[p51mustangman]

I need the cockpit kit...but first I need the plane. Ordered one on the 20th checked the UPS website... shipping shows up as cancelled now ? hoping they can get this sorted out quick!

[MANFRED]

Chocks for the wheels

[p51mustangman]

I received my items today. I don’t have a printer either. I’d be willing to bet if you put a request out there, you would find someone willing to print up the items you require. I now have what I wanted to finish the L39. Nose wheel brace, receiver shelf, weapons pylons, two camera mounts for a run cam, and two sets of chalks while parked in the pits for fun. Going to be a fun flying season.

wow those look great!

[Race 22 Crew]

I received my items today. I don’t have a printer either. I’d be willing to bet if you put a request out there, you would find someone willing to print up the items you require. I now have what I wanted to finish the L39. Nose wheel brace, receiver shelf, weapons pylons, two camera mounts for a run cam, and two sets of chalks while parked in the pits for fun. Going to be a fun flying season.

[p51mustangman]

Here is the link to the L39 nose gear brace on thingiverse. Had a friend print it for me. Should arrive next week and once installed it will be ready for the maiden.

https://www.thingiverse.com/thing:3134218


Warren

yeah I saw that, I do not have a 3d printer though...

[Race 22 Crew]

Here is the link to the L39 nose gear brace on thingiverse. Had a friend print it for me. Should arrive next week and once installed it will be ready for the maiden.

https://www.thingiverse.com/thing:3134218


Warren

[p51mustangman]

any updates on the 3d cockpit upgrade? Just ordered mine...also looking for the nose strut support...

[urrl]

[xviper]

Today I was able to use a grass field to fly my L39. Flew 3 times without the screen on the cheater inlet and 3 flights with the screen. I had 3 pilots spotting along the runway to determine the point on liftoff.
There was not enough difference between using the screen or not. It may well effect other EDF's but not the Freewing L39.

And there you have it. I think "cheater holes" help the pilot believe there is an improvement. They may help in the first 10 to 20 feet from the start but after that, most EDFs are moving pretty well. The only EDF where cheaters might actually do something are ones that hover (eg. SebArt Mig 29) where there is little to no air movement past the plane. They fly in dead air some of the time.

[sflyer1]

Today I was able to use a grass field to fly my L39. Flew 3 times without the screen on the cheater inlet and 3 flights with the screen. I had 3 pilots spotting along the runway to determine the point on liftoff.
There was not enough difference between using the screen or not. It may well effect other EDF's but not the Freewing L39.

[Quickstop]

The other thing that I learned is that the cheater is for sucking more air in during zero to take off speeds, when there is less forward movement. Once moving, the cheater is not that needed due to the ram air effect. In fact, some have said that top speed is not affected with cheaters covered. I've never covered mine, even when I used to run on a gravel runway, so I can't attest to any of this. And yes, the gravel runway beat the crap out of the fan blades.

They also add it because it contributes to that turbine like sound we all love.

[xviper]

The plane will still definitely fly with a screen over the cheater or even the cheater completely covered.

But I assume the reason the designer put the cheater in in the first place is because the scale inlets do not flow enough air for the fan.

Therefore if you block the cheater in some way, you are probably starving the fan to some extent and loosing some performance.

The other thing that I learned is that the cheater is for sucking more air in during zero to take off speeds, when there is less forward movement. Once moving, the cheater is not that needed due to the ram air effect. In fact, some have said that top speed is not affected with cheaters covered. I've never covered mine, even when I used to run on a gravel runway, so I can't attest to any of this. And yes, the gravel runway beat the crap out of the fan blades.