Official Freewing 80mm EDF L-39 Albatros Thread

[Jets and Wings]

Well it happen but State Farm cant cover that. Seems my 6s 6250 may have took a hit as it lost control even after pulling power to nill and still no control regained. Tested battery on internal IR and total was 15ohm with average of 2.5 ohms on each cell so not sure. All radio checks fine but when I plugged the battery up and tested at 25-30% power it dropped like a rock on the cell checker. Just as i was turning base to land too!
Good news in this, really, you think? Yes the Dragon is still fully intact and im thinking of a Frankenstein resurrection of graphing a new fuse to the front from the intakes forward. What would you do?

Your L-39 looks really great, sorry for your accident, so as you said, I would use a new fuse front! Get it up again

[Hardway]

[sam51401]

Well it happen but State Farm cant cover that. Seems my 6s 6250 may have took a hit as it lost control even after pulling power to nill and still no control regained. Tested battery on internal IR and total was 15ohm with average of 2.5 ohms on each cell so not sure. All radio checks fine but when I plugged the battery up and tested at 25-30% power it dropped like a rock on the cell checker. Just as i was turning base to land too!
Good news in this, really, you think? Yes the Dragon is still fully intact and im thinking of a Frankenstein resurrection of graphing a new fuse to the front from the intakes forward. What would you do?

[Pogo]

I just completed the main gear doors on my L-39 after struggling for ages to get the 2nd one to work. The first door went well and operated fine right off the hop, the other one not so much (go figure). Hours of fiddling but finally got both working reliably on the bench and hopefully in the air. As can be seen the opening and closing is quite abrupt but such is the nature of mechanical, as opposed to servo, operation I guess. I've used an elastic to hold the doors open but will try to source some springs at some point- there's a fine line between what feels like enough spring tension to hold the doors open in flight and too much tension which stalls the retracts as they try to close the doors.
I just hope the retracts continue to work for awhile as they've been subjected to maybe a thousand or so cycles in the last few days!
A little video:
https://www.youtube.com/watch?v=BuXD...ature=youtu.be
Tom

[TiredIronGRB]

Any time :)

[Roger Rabbit]

Thank you very much, appreciate your assistance.

[TiredIronGRB]

Hi All,
Where can I download the 3D printing files for the L39 cockpit and accessories?
I have tried searching but cannot find the files.
thanks

They're always on the support page ;)

[Roger Rabbit]

3D Printed parts:

MotionRC is all about choices and with the 3DP upgrade parts the choice is all yours ;) Files will be available to download on the top tab of the listing for free for printing yourselves or alternatively they will be available to purchase under the upgrades tab and should come with a bass white ready for your own finishing paint. Below are examples of the 3DP parts painted by Alpha with just a few hours work. I think you can all see the results talk for themselves:

Stuart

Hi All,
Where can I download the 3D printing files for the L39 cockpit and accessories?
I have tried searching but cannot find the files.
thanks

[sam51401]

Bajora, your photos are always first class and i love to see all that you post. They make awesome screen backgrounds! Thanks for sharing your talent with all of us.

[Bajora]

A few in-flight photos of my pal Michael Troy's custom schemed L-39 on it's maiden flights this AM:

[Pogo]

A pal at work printed the cockpit parts someone at Motion designed (was it you Alpha?- thanks!) and here's the finished product. The pilot is a Canadian F-18 driver who destroyed his aircraft and got sent on exchange to the Royal Thai airforce as punishment (?). Hope everyone is well.
Tom

[T-CAT]

Thanks everyone for your responses. The solution was a simple one discovered through your replies. I was testing the retracts with a fully charged 2-cell lipo that was putting out 8+ volts. That must be too much voltage for these retracts, maybe a safety feature built in. When I used the same battery but used the BEC from a brushless speed control, all 3 retracts worked. I did notice a delay and I bet when the retracts were in the jet and hooked to the receiver, I toggled the switch too fast for the retracts to wake up. I with test again after re-installed and powered through the BEC. Thanks again, and I have enjoyed reading and watch the videos on the posts.

Glad you found the solution! The factory installed retracts are likely a max of 6V (at least from my experience), so you're fortunate the units didn't burn out on the 2S LiPo. The factory BEC (internal BEC within the ESC) should be providing roughly 5V-5.5V to the receiver, servos/retracts.

[Mark_S]

Thanks everyone for your responses. The solution was a simple one discovered through your replies. I was testing the retracts with a fully charged 2-cell lipo that was putting out 8+ volts. That must be too much voltage for these retracts, maybe a safety feature built in. When I used the same battery but used the BEC from a brushless speed control, all 3 retracts worked. I did notice a delay and I bet when the retracts were in the jet and hooked to the receiver, I toggled the switch too fast for the retracts to wake up. I with test again after re-installed and powered through the BEC. Thanks again, and I have enjoyed reading and watch the videos on the posts.

[T-CAT]

Hello, I am just joining this thread. I have had My Albatros for two weeks now and it has been frustrating. The model assembled very nicely and everything works great except for the retracts. All 3 retracts failed right out of the box. I tried to connect all 3 directly to the Spektrum receiver and also to a MaxPro servo tester. Nothing has worked. Martin at the MotionRC support has been very patient with all the emails I sent, thanks Martin. I finally sent all 3 retracts to Motion for testing. For them, the retracts worked fine, they even took a video so I could watch. When receiving them back, I tested them and all 3 failed to work. What am I missing?

Can you supply us with more description of how you set it up and possibly a video and/or pictures of the connection points?

There are a lot of variables that could be causing the retracts not to function, so sifting through all that are possible could take awhile. Sometimes it's something obvious and sometimes it's not.

[xviper]

Sometimes, what's "missing" is the most simple and obvious things. Without knowing and seeing exactly what you're doing, it may not be possible to tell you what's missing. First, you understand about "polarity", I assume. Plugging them into a "Y" or into a servo tester backwards won't make them work. Next, how are you powering the servo tester - type and size of battery, anything between the battery and the tester? As mentioned, there is a long delay after you throw the switch and also, some retracts need at least one cycle of the switch before they "wake up". There may be other things that you are doing or not doing that you may not consider important to mention.

[p3arljam]

The gear have a very long delay make sure you let them cycle. Also there is a video from motion that showed a similar issue and it was an easy fix.

[Mark_S]

Hello, I am just joining this thread. I have had My Albatros for two weeks now and it has been frustrating. The model assembled very nicely and everything works great except for the retracts. All 3 retracts failed right out of the box. I tried to connect all 3 directly to the Spektrum receiver and also to a MaxPro servo tester. Nothing has worked. Martin at the MotionRC support has been very patient with all the emails I sent, thanks Martin. I finally sent all 3 retracts to Motion for testing. For them, the retracts worked fine, they even took a video so I could watch. When receiving them back, I tested them and all 3 failed to work. What am I missing?

[Jets and Wings]

JLambCWU what a great airfield and a beautiful view as well. Nice flying....

[JLambCWU]

LIVE from the St. George Utah 2020 Presidents Day fly in from MotionRC Customer Community on Facebook.

First tracks and a beautiful pinky sunrise demoing the new 80mm inrunner on the L-39.

[Guipedroso]

Did some FPV aerobatics with my L-39! What a flight, what a plane!
🔥🔥🔥