A-20/DB-7B (Boston III) tropical – AMT/ETRL

Started by Eric Berg · 161 · 2 years ago · A-20, A-20B/C, AMT/ERTL A-20 B/C Mk III, Boston, Havoc
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    Spiros Pendedekas said 2 years, 7 months ago:

    Tail looks great, my friend @eb801!

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    Eric Berg said 2 years, 7 months ago:

    Nose Job
    Finished just in time to go hide the Easter eggs for the grandkids.

    Here's a look at the finished Vector navigator/bombardier cockpit prior to attaching the slanted glass nose. Nice looking bombsight Vector provided.


    I had to sand down the underside where the last "glass" panel meets the fuselage. I should have done this before gluing the nose in place to prevent a snow storm of dust particles sticking to everything inside the cockpit as I found out the hard way. Note the instillation of the navigator instrument panel and decaled dials on the inside of the "glass" along with an optical aide.

    And voila, the canopy nose is now glued in place, after removing it previously and re-cleaning the insides. I used a combo of plastic super glue and white glue with a tad of white adhesive caulk to fill in any gaps. The fit was great much to my surprise.

    Next up is to tackle making a rubber raft in a duffle bag out of some modeling material and cut out a piece of sytrene that resembles the pilot pull-up armor plate behind the seat.
    Stay tuned.

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    Colin Gomez said 2 years, 7 months ago:

    Looking good, Eric. The masks appear very precise - essential for that kind of greenhouse. My personal choice for the raft would be milliput - very forgiving stuff and not too toxic. I think it melts plastic, though, so I wouldn't leave it to dry in place. Anyway, I am sure you have your own method and material, , but just my 2 cents worth. I am enjoying this build.

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    Spiros Pendedekas said 2 years, 7 months ago:

    Great progress and wonderful looks so far, my friend @eb801! Looking forward to it!
    Ah, yes: the dust that will stick everywhere, so annoying...

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    John vd Biggelaar said 2 years, 7 months ago:

    Very nice work done, Eric @eb801
    The nicely fitting nose will allow a clear view of the interior.

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    Tom Cleaver said 2 years, 7 months ago:

    Your masking job looks better than mine.

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    Eric Berg said 2 years, 7 months ago:

    @tcinla- Thanks Tom, but I cheated and used an Eduard mask set. I took my time and several toothpicks later to get them exactly into position.

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    Erik Gjørup said 2 years, 7 months ago:

    Very nice job @eb801. -and those rubberbands look like they have been around for some time, so I guess they have been worth the investment 🙂
    I do not know how I managed without masks back in the old days. . .

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    Eric Berg said 2 years, 7 months ago:

    Meanwhile: a Temporary Road Block Ahead

    I intend to turn this A-20 into a RAF Boston III (A-20C) that had the exhaust exiting out the outside nacelle. Some of these C variants still had the tropical cowl side vents. It seems that many Havocs varied from plane to plane due to modifications made out in the field.

    Rather then destroying the kit nacelle piece by digging out an exhaust opening and redoing the cowl flaps and exhaust exit bulges, I discovered that Red Roo Models in Australia made a resin replacement kit with tropical cowls back in 2002 and still had some in stock so I ordered one. I guess it wasn't all that popular as it seems they never made any more and I managed to purchase one of their last remaining sets.

    However when I got around to using it, the nacelle set was totally out of whack and doesn't line up to the kit parts. "Honey I shrunk the nacelle" appears to what happened.

    I contacted Gary at Red Roo Models and he agreed that something happened to the molds. He located a remaining pair that was cast properly and it's on it's way at no charge to me.

    However, how long it will take to get here is anyone's guess. A tip of the ol' hat to Red Roo for taking care of this.

    I'm holding off on the working on the wing, nacelles and cowls until these replacements arrive.

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    Spiros Pendedekas said 2 years, 7 months ago:

    A slight delay but all in all a fixable issue, my friend @eb801!
    For sure your Boston will look "correct" with those vents, a distinctive "tropical" A-20 family feature. It is really interesting that not all of the C variants carried the "tropicalized" cowlings, deeming the modeling research really valuable.
    Looking forward to this superb project!

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    Eric Berg said 2 years, 7 months ago:

    Spiros @fiveten: After a little more research I realized the wider vent extensions mounted on top and at the front of the cowls were the new improved standardized intake vents used in tropical conditions. Those are included in the kit and would also be correct to use. So many ways to go here. Some had them and others didn't. That's what's making this build interesting to me. But as TC always maintains, "Who's going to notice?". Me, that's who.

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    John vd Biggelaar said 2 years, 7 months ago:

    A pity about those shrunk nacelles but great from Red Roo to sent a new set, Eric @eb801
    Nice research as well. That is another great side effect of modelling, learning about all the variants and their differences.

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    Eric Berg said 2 years, 7 months ago:

    Back to the Front Office
    I just got the word from Red Roo that they sent out the replacement nacelle set two days ago. It's time to button up the cockpit. I made a facsimile of the pull up armor plate located directly the pilot's head with sheet styrene, wire and painted masking tape. Not exactly accurate looking and a lousy photo to boot, but I just wanted to busy up the area behind the pilot's seat. One won't be able to see much anyway after all all the window glazing is put in place.


    I also made a clay version of the life raft or should I say, "half a version". I just modeled the part that is visible when when the cockpit hatches are closed. I don't intend to pose them open. Once the clay dries I will paint it yellow.

    and then I noticed this:
    After a lot of looking at reference photos I just noticed an accuracy error that AMT and most modelers have missed. There's a pronounced molded fin root fillet at the bottom of the leading edge of the vertical stabilizer or tail where it meets the fuselage.


    This needs to go away and sanded flush with the fuselage judging by all the photos I've looked at. Look here:


    So I added a little fill and sanded it away to match the real thing. My guess is the fillet was factory puttied and sanded flush as well. Just a guess.

    1 additional image. Click to enlarge.

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    Spiros Pendedekas said 2 years, 7 months ago:

    Really nice looking cockpit, my friend @eb801!
    Great catch on the fin "fillet", as well!

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    Eric Berg said 2 years, 7 months ago:

    Here's one more photo of an early Havoc that shows very clearly the area I'm referring. No triangular wedge shaped fairing/fillet here, unlike AMT's fuselage molding. Spiros@fiveten