Official FlightLine RC 2000mm B-24D/J Liberator Thread

[LilMac]

My B-24 crashed this weekend, still trying to determine what happened. Smooth take off and was doing a normal climb up when the plane about 30 feet off the ground turned almost 90 degrees up. I think it stalled at this point and pitched over and nosed in. All the motors are still attached and the one prop that survived is the right outboard prop and it is in tact. I probably could be a lot of work and repair. But my 90 year dad loved this plane and is one that he can still see flying, so would love to just replace with a new one now, and then use the other as a project plane. Motion RC is out of stock. Done some searches but really haven't found one but on E-bay and the guy seems to be a little sketchy.

So if anyone has a led on a plane please let me know. Thanks so much.

[quitcherbitchen]

This was the bonbardier for that mission. He completed 25 missions and rotated back to the states, but he deserves the credit. LOL .

[davegee]

Adam Bombs certainly look the part

I'll Second that! I was amazed how good a job the "bombardier" did! 👌👌👌

[Grossman56]

Excellent aim!!

Grossman56

[quitcherbitchen]

Adam Bombs certainly look the part

[Mikdys]

I did consider those but they are too big to fit internally. I tested some small ones I made myself but they didn't break open on impact so I went for the cap bombs in the end.

The way forward, to make a total display, is probably to stage some ground based fireworks remotely set off at the point the "bombs" hit - probably a bit OTT

[quitcherbitchen]

Another idea if you want them to explode. Easy to see on the way down.

[Mikdys]

I couldn't find a picture of the formation lights but I do have this video taken while I was test fitting them:

https://youtu.be/99Q0OrMZsvE

[Mikdys]

Hi,

I made some bomb bay doors and added working bomb releases for 4 bombs, here's a video short:

https://www.youtube.com/watch?v=O34PYllaXb8

It's not a scale mod (the full size had "roller blind doors") but it's functional - you don't see the doors in detail in the air but you do see the bombs dropping! The control circuit allows single, double or all four bombs "pickled" at once and lights up "formation lights" on the tail (white for doors open and red for bombs dropping). Let me know if you want more details on building a non-scale mod for bomb doors. The bombs are modified "toy cap bombs", from EBay, and they do set off the caps when they hit a hard surface. They are not very loud though so I don't bother with the caps now. Somebody suggested I load them up with nitrogen triiodide for more realism but that stuff is pretty unstable and I don't want to risk it going off inside the bomb bay (go to 2:40 on this video https://www.youtube.com/watch?v=cWMlUDT2sK8 )

Hi,

I made some bomb bay doors and added working bomb releases for 4 bombs, here's a video short:

https://www.youtube.com/watch?v=O34PYllaXb8

It's not a scale mod (the full size had "roller blind doors") but it's functional - you don't see the doors in detail in the air but you do see the bombs dropping! The control circuit allows single, double or all four bombs "pickled" at once and lights up "formation lights" on the tail (white for doors open and red for bombs dropping). Let me know if you want more details on building a non-scale mod for bomb doors. The bombs are modified "toy cap bombs", from EBay, and they do set off the caps when they hit a hard surface. They are not very loud though so I don't bother with the caps now. Somebody suggested I load them up with nitrogen triiodide for more realism but that stuff is pretty unstable and I don't want to risk it going off inside the bomb bay (go to 2:40 on this video https://www.youtube.com/watch?v=cWMlUDT2sK8 )

Here's some more detail:

Materials:

Control circuit from Dave's RC:

https://www.davesrce.com/product-page/bomb-drop

E-Flite payload release mechanisms (x4):
https://www.horizonhobby.com/product...e/EFLA405.html

Toy cap bombs from EBay:
https://www.ebay.co.uk/itm/394437924...R0AAOSwDNpj1n4 T&amdata=enc%3AAQAHAAAAkNlwmsxLZPWe8AgxbFWvouKkn sp PsxG6Yok7xboARxDXmAl2E6R3aUttoZF7WDDIwX7rvDzG5FY8A Mmk%2Bp%2B3VqqF3Y%2FYPB1J5JqPkGhpMCRtAd81UV7cceXNP PBPTZ%2FDv5Ki1Mid70IlcsVkkK56YLxH0Jgs30XqShZ%2BJYX C%2FJ1CUZr2JLYIZjmYwXbm7GiDZw%3D%3D%7Ctkp%3ABk9SR9 jN_a_QYQ

Plus odd balsa, glues and paint.

Mod:

First off I tested the fit on an old fuselage. This enabled me to find the optimum size without compromising any lateral support structures. Interestingly, both the old fuselage and the one on the model didn't have any glue "in the middle" from the factory. Adding this (Uhu Por) put back some of the strength taken out. The "cassette" I made also adds strength with its longitudinal structure and end bulkheads all glued in. You can see from the photo' exactly where the cuts into the fuselage need to be made. The finished model has plenty of strength and even a couple of "bouncy landings" didn't bother it.



I then made the doors out of balsa using hard sheet for the frames and 1/16" soft sheet for the covering (wet the outside before fixing on with CA and it follows the form really easily). I made the doors in one piece then cut down the centre to seperate them.



These fitted really nicely.

I then built the "cassette" from balsa and tested the fit. Captive nuts are incorporated for the bomb release mechanisms and you can see the outlines (in red marker) where these need to go.



You can see here how everything fits together.



Finished build doors shut (with bombs inside).


Finished build doors open (with bombs fitted ready for dropping - next to the bottom bomb you can see the mechanism's "reset tag" which needs to be held back with a small screwdriver, or similar, when the bombs are loaded).



These are the bombs used - cap bombs with one fin shaped to fit the E-Flite release mechanism and a retaining bracket made from thin tin and epoxy glued onto the bomb and a splash of paint to make them look a little more authentic.



This is the circuit board that controls it all. It works off a single channel and a three way switch. The first position opens the doors (and puts on the white formation light) moving to the second position (and immediately back to the first) "pickles" the bombs and flashes the red formation light on and off. There are dip switches on the circuit board and these can be set (pre-flight) to get the bombs to drop singly, in pairs or all together. In my video I have this set for pairs (one bomb hangs up on the doors during the first drop but this doesn't happen with the model moving).


Lastly, fitted the formation lights (I don't have a photo of the finished fit but this one gives and idea of how to go about it). I used light filler to cover the holes and channel I made and glued the lights into a small balsa panel fitted under the rear turret. It looks really good once painted but, the best bit, is doing a bomb run and then turning and pulling away in a gentle climb while shutting the doors. You see the rear of the 'plane with the bright white light on and doors open, then the light goes off and the doors slowly shut.

[Mikdys]

Looking to add Bombay doors to my B-24. Anyone of a link or instructions?

Hi,

I made some bomb bay doors and added working bomb releases for 4 bombs, here's a video short:

https://www.youtube.com/watch?v=O34PYllaXb8

It's not a scale mod (the full size had "roller blind doors") but it's functional - you don't see the doors in detail in the air but you do see the bombs dropping! The control circuit allows single, double or all four bombs "pickled" at once and lights up "formation lights" on the tail (white for doors open and red for bombs dropping). Let me know if you want more details on building a non-scale mod for bomb doors. The bombs are modified "toy cap bombs", from EBay, and they do set off the caps when they hit a hard surface. They are not very loud though so I don't bother with the caps now. Somebody suggested I load them up with nitrogen triiodide for more realism but that stuff is pretty unstable and I don't want to risk it going off inside the bomb bay (go to 2:40 on this video https://www.youtube.com/watch?v=cWMlUDT2sK8 )

[LilMac]

Looking to add Bombay doors to my B-24. Anyone of a link or instructions?

[LilMac]

My wife purchased the FL B24 for me last Christmas, I put it
together shortly after but never got around to maiden flight until this past weekend July 9th. Ground test everything functioned as it was supposed to, range test everything proved fine. Went up for maiden flight it pulled hard right on takeoff, i blamed the crosswind 5-8mph.
Got the plane to 3 mistakes high to trim out it pulled hard right once more, so i throttled back to 40-50% not thinking anything of it, got the plane happy with its trim made a few circuits and eventually the plane took a hard right into a uncontrollable torque spin or what looked like a flat spin. In the spin i throttled down, reverse rudder
to slow it down with one throttle blip in the middle to see if i could pull out. Ultimately it didn't pull out and damaged the nose, nose gear, right wing retracts, right wing mounting tabs, carbon spars and small parts, wings rudder and elevator seem to be in good shape. At the crash site, i pulled the batteries assessed the damage only to find out the right-wing outboard esc had failed causing the spin and most likely the hard right pulls prior. I have attached all the pictures of all of the aircraft so you can assess the damage for yourself. I uploaded the flight video to Youtube to be able to share. I dont upload much on YT so forgive my video skills.

https://youtu.be/xlV88LiHB60

Motions team emailed me back on everything and said 30 day warranty nothing can be done.
My only arguement to that was whats the difference in the plane sitting on my shelf for 7months vs it sitting on a hobby store shelf for 7 months?
Oh well crap happens, guess ill be rebuilding, it just sucks knowing it was a manufacturer part failure and nothing can be done.

I had issues with mine right out the box. After completing trouble shooting from Motion took it out to field. Did my practice runs and then when I was ready to take off one of my outboard ESC's failed. Fortunately before it lifted off. Motion said that since I had taken it out it was used. Though that is what I was told to do. They did replace the part and waiting on weather to try again. I have read of several ESC's failing on this plane.

[Elbee]

Replied to your PM.

[Elbee]

Replied to you PM.

[spanishcop]

Elbee I sent ya a private messsge but the 3D files are mentioned by Alpha on page 11. These files were provided to members here who uploaded files to a google account and that’s no longer available. The link is bad. Then uploaded a second fine by someone else and that link is now bad. So there are 3d files I need to find out how to get them.

[Elbee]

SC, I have not seen any STL files for the B-24. If I run across any or any mention of STL Files, I will PM you. Best and Good Luck, Sir, LB

[spanishcop]

Hello Folks,

Could someone direct me where I can download all the 3D Printable files for this B-24? I have scrolled through all these pages and the links i did find no longer working (google accts). Can someone please direct me to them. I wished Motion would provide a link to these files. I understand they have them available for purchase, but I have a 3d printer and it was mentioned they would be available for download yet there is no information or link to these files. A little frustrated about it.

Thank you in advance.
Michael

[Naveda08]

Had a chance to fly on of these Liberators after installing a sound system in it. Really like it, might need to get one for myself

[Elbee]

Prekin Nicely done, Sir. Best, LB

[Prekin]

I sold my B-24 months ago. I did some mods on my Liberator and did B-24 Gr.Mk.V. Did a dumbo nose radar and later I added wing ligh. All details were painted, just like in real.
My B-24 was "PP Z" and later I was asked to do another Liberator for local museum, that one was "PP K" "Kosťa".