Roban - World Class Scale Helicopters

Official FlightLine 1600mm B-25J Mitchell PNP Thread

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  • Fast N Light
    replied
    Originally posted by Larry D
    Click image for larger version  Name:	B25NoseMeasure.jpg Views:	73 Size:	101.9 KB ID:	386597 FNL - Been trying to upload an image with some measurements, but HS is simply not taking it. If you are looking for a total swap of the "glass" , it's a bit more than HxWxL, but basically at the back the height I get is 65mm. From the bottom of the "glass" to the gun port is 62mm and from the gun port to the back is 142mm. The width I get at the back is 92mm and tapers at the front to about 75mm. Along the side from the back to the edge of the "lower glass section" is 105mm.

    At least those were the measurements I got. They are NOT exact simply because my caliper is too small to make all of the point measurements, but MAYBE, just MAYBE this will help you get in the ball park. The image would make more sense, but I have tried numerous times to get one to load. It won't.

    FINALLY got it to load.

    Good luck and hope the info is useful.
    Would you please confirm or correct my interpretation of your sketch per my images below?

    H120x W92x L140mm

    H1 62x L1 105mm

    These dims are a long way off from my estimates and the CAD model becomes unstable when I try to use them. The loft characteristics also seem to have degraded into faceted transitions rather than smooth ones.... Probably have to start over and rebuild 100% at this scale to have a shot at this.
    Click image for larger version  Name:	H and L.png Views:	0 Size:	111.1 KB ID:	386663 Click image for larger version  Name:	W.png Views:	0 Size:	113.5 KB ID:	386664
    Click image for larger version  Name:	L1 H1.png Views:	0 Size:	71.3 KB ID:	386665

    Leave a comment:


  • Evan D
    replied
    My understanding when they were talking about those exhausts was some versions had extras and some didn't. Maybe I misunderstood?


    I like that some add the extra detail. For me what I got is fine. My only gripe about what came out of the box is trivial. The decals for Heavenly Body says its home fielded at Chico, C not Chico, CA. Pretty trivial .

    Oh, though I don't use them the bombs aren't weighted to fall properly.

    Leave a comment:


  • Spad Driver
    replied
    As to why or why not flightline decided not to add the extra exhaust stacks for scale accuracy is to me a mute point.
    The addition of small details missing on a model of this complexity and difficulty to manufacture, just add to my ownership of the finished aircraft.

    Total kudos to Flightline for bringing this excellent product to market for us to drool over and get upset when we can't have it NOW!.

    Look at the creative ideas already dreamed up!.
    ​​​​​
    Too each there own as far as what level of detail they prefer. Stock box to competition level to wildly modified.

    I'm gonna wander over to your table and have a look at yours!.👍
    SpadDriver

    Leave a comment:


  • Spad Driver
    replied
    Thanks Tom for the update!..
    MRC's transparency regarding the shipment of our much anticipated toy's arrival is greatly appreciated!.

    Have space cleared on the hanger floor awaiting it's arrival. In the meantime it's "HAPPY DANCING SPACE".
    Oh Yah!..

    Fast N Light Sir, your work is total BOMB!.💥
    The exhaust ports look amazing and the idea of a strafer nose addition at that quality level!... Sierra Hotel Sir!
    Now you have me thinking about a tribute to Major Paul "Pappy" Gunn and North American Aviation field sevice representative Jack Fox's efforts at the Fourth Air Depot, Townsville, Australia late 1942.

    Maybe a 345th BG 499th BS "Bat out of Hell".Or a 498th BS "Falcon Squadron".
    Click image for larger version

Name:	20230916_085216.jpg
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ID:	386643 That's why I participate in this forum.
    Gets my modeling juices flowing!.
    thanks Folks,
    SpadDriver

    Leave a comment:


  • rlcamden
    replied
    Originally posted by Tom
    B-25 UPDATE - The customs inspection has FINALLY been completed. There were no issues with the inspection as expected. I have all hands on deck trying everything possible to get this container to Motion RC as quickly as possible. I'm cautiously optimistic we may receive this late next week but I'm not ready to bet on that just yet. I'm not sure if we can get this moving at this point on a Friday.
    Maybe, just maybe, there is some owner/operator OTR drivers bobtailing from the containers location to your area that would be willing to assist

    Leave a comment:


  • desertdrifter7
    replied
    Tom, that is great news. I guess I'd better start reorganizing my hanger to make room for it. I figured I wouldn't get started until I saw a little light at the end of the proverbial tunnel.

    Leave a comment:


  • Tom
    replied
    B-25 UPDATE - The customs inspection has FINALLY been completed. There were no issues with the inspection as expected. I have all hands on deck trying everything possible to get this container to Motion RC as quickly as possible. I'm cautiously optimistic we may receive this late next week but I'm not ready to bet on that just yet. I'm not sure if we can get this moving at this point on a Friday.

    Leave a comment:


  • Fast N Light
    replied
    Originally posted by Larry D
    FNL - Been trying to upload an image with some measurements, but HS is simply not taking it. If you are looking for a total swap of the "glass" , it's a bit more than HxWxL, but basically at the back the height I get is 65mm. From the bottom of the "glass" to the gun port is 62mm and from the gun port to the back is 142mm. The width I get at the back is 92mm and tapers at the front to about 75mm. Along the side from the back to the edge of the "lower glass section" is 105mm.

    At least those were the measurements I got. They are NOT exact simply because my caliper is too small to make all of the point measurements, but MAYBE, just MAYBE this will help you get in the ball park. The image would make more sense, but I have tried numerous times to get one to load. It won't.

    Good luck and hope the info is useful.
    I probably should been a little more clear in my description. The design has moved forward quite a bit since then, so I can make some images.

    At present H80xW60xL75mm
    Click image for larger version

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ID:	386550 Click image for larger version

Name:	H and L.png
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    For the cutout

    At present H1 28xL1 57mm
    Click image for larger version

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    I realize these will be approximate dimensions but those will help quite a lot. Thanks!

    Leave a comment:


  • Larry D
    replied
    Click image for larger version

Name:	B25NoseMeasure.jpg
Views:	1019
Size:	101.9 KB
ID:	386597 FNL - Been trying to upload an image with some measurements, but HS is simply not taking it. If you are looking for a total swap of the "glass" , it's a bit more than HxWxL, but basically at the back the height I get is 65mm. From the bottom of the "glass" to the gun port is 62mm and from the gun port to the back is 142mm. The width I get at the back is 92mm and tapers at the front to about 75mm. Along the side from the back to the edge of the "lower glass section" is 105mm.

    At least those were the measurements I got. They are NOT exact simply because my caliper is too small to make all of the point measurements, but MAYBE, just MAYBE this will help you get in the ball park. The image would make more sense, but I have tried numerous times to get one to load. It won't.

    FINALLY got it to load.

    Good luck and hope the info is useful.

    Leave a comment:


  • Fast N Light
    replied
    Would someone please measure the HxWxL for the nose glass/canopy?

    Planning to use the perimeter for the attachment of the gunship nose. My guess was H80xW60xL75mm
    Click image for larger version  Name:	Screenshot 2023-09-14 131730.png Views:	0 Size:	446.0 KB ID:	386518 Click image for larger version  Name:	Screenshot 2023-09-14 131512.png Views:	0 Size:	250.4 KB ID:	386519 Click image for larger version  Name:	Nose 10.jpg Views:	0 Size:	67.6 KB ID:	386520 Click image for larger version  Name:	Screenshot 2023-09-14 183925.png Views:	0 Size:	99.7 KB ID:	386525
    Attached Files

    Leave a comment:


  • Larry D
    replied
    Originally posted by Jdcrow

    Odd that the Replace Parts list both escs as 50A, but image shows one is 50 Amp opto and one is 60 amp 5v 7amp ubec.

    Still cant get them to go into calibration mode. Both are operating, just dont believe im getting full throttle out of them.
    Curious JD if maybe you have tried ESC calibration one at a time. Have you tried unplugging the 6S adapter (EC5 to XT60) and use a 4S with XT60 to see if you can get each (or either) side to calibrate?

    Leave a comment:


  • Elbee
    commented on 's reply
    If that is the case then I'd say you're very close in shape. Now it's about actual dimensions. Nice work.

  • Fast N Light
    replied
    Originally posted by Elbee
    Fast N Light Am I correct to presume the cross section you are showing is 'upper right' looking nose on? Best, LB
    Yes that's probably the best perspective explanation for the pair of photos. However, the nose of the B-25 shown seems to have symmetry top/bottom, left/right, so it could be any quadrant...

    Leave a comment:


  • Elbee
    replied
    Fast N Light Am I correct to presume the cross section you are showing is 'upper right' looking nose on? Best, LB

    Leave a comment:


  • Fast N Light
    replied
    Started working on the gunship nose and having some success with lofting to generate geometry in the CAD tool. 1st time for me 😃.

    Using this approach i generated 3 curve sets which control the geometry (blue lines in the 1/4 section view shown). Each curve is composed of 3 tangent arcs. By trial and error with these 18 variables, I could use this to generate something representative with the model in hand. However, that will take some time and won't be scale.

    Wondering if any of you would help me locate the scale geometry for the nose?

    Click image for larger version

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    Click image for larger version

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    Leave a comment:


  • Jdcrow
    replied
    Originally posted by Evan D
    FreeWing made by HobbyWing. Note it’s opto, no BEC.

    https://www.motionrc.com/products/fl...-1179593751520
    Odd that the Replace Parts list both escs as 50A, but image shows one is 50 Amp opto and one is 60 amp 5v 7amp ubec.

    Still cant get them to go into calibration mode. Both are operating, just dont believe im getting full throttle out of them.

    Leave a comment:


  • LucB
    replied
    Originally posted by Evan D
    FreeWing made by HobbyWing. Note it’s opto, no BEC.

    https://www.motionrc.com/products/fl...-1179593751520
    Thanks Evan.
    Must be this one that took fire, because the remaining one is the ESC with BEC. Despite the manual says "ESC 50A Brushless x2 7A UBEC", I assume only one is with the UBEC.

    Now wondering for the motor, because flames went trough it, and it is darkened and smells horrible.

    Leave a comment:


  • LucB
    replied
    Originally posted by ridgerunner

    Can you strip off the burnt shrinkwrap and read any identifying markings on the ESC to possibly determine its mfg?
    Unfortunately, nothing to read anymore.

    Leave a comment:


  • Evan D
    replied
    FreeWing made by HobbyWing. Note it’s opto, no BEC.

    Leave a comment:


  • ridgerunner
    replied
    Originally posted by LucB
    ... I connected the battery, I got a huge electric spark at the battery connector and immediately a "pof" (sounded like a capacitor explosion) and flames coming out of the (right) nacelle. ...
    Yipes!!! (and bummer! )

    Can you strip off the burnt shrinkwrap and read any identifying markings on the ESC to possibly determine its mfg?

    Leave a comment:

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