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HelicopterScale Model RC Helicopters › Graupner NH90 fuselage parts/accessories?
10-23-2016 04:23 AM  11 months agoPost 1
BrooklynJim

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Starlight, PA

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hey guys.. anyoneknow where i can get a set of replacement parts for an NH90?

namely the glazing set and the scale turbine inlets on top of the doghouse

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11-04-2016 07:43 PM  10 months agoPost 2
BrooklynJim

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Starlight, PA

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anyone have a lead on this? or maybe someone has a set that they can mold for me? ill pay for materials

i have a vacuum former so all i would need is a plaster mold of the curved main windows

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11-05-2016 03:04 AM  10 months agoPost 3
MDSCUSTOMS

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North Wales, U.K.

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Which curved screens are you trying to make ? the little top quarter ones or the main front screens ?

Mark.

I'm only here coz I'm not all there !!

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11-05-2016 03:08 AM  10 months agoPost 4
BrooklynJim

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Starlight, PA

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hey mark..
all the front screens brother, mains, upper and footwell, pretty much whatever window isnt flat, i have to make

any ideas?

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11-05-2016 03:15 AM  10 months agoPost 5
MDSCUSTOMS

rrApprentice

North Wales, U.K.

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For the main screens, take a few measurements and make a simple balsa plug to heat the plastic over, you don't even need to use a vac former for this job. I've done it a couple of times for my Bell 222 and my AS-355. As per pic.

For the little quarter screens and the footwell ones, Plastic easter egg moulds are cheap on the internet and available in different sizes, they're already moulded for you and all you have to do is cut the required shape out. Here is a test of one on my A109.

Mark

I'm only here coz I'm not all there !!

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11-05-2016 03:22 AM  10 months agoPost 6
BrooklynJim

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Starlight, PA

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hmmm...

not bad there... good thing i thought of it!! ROFL!!

thanks mark.. it looks easy enough, what plastic thickness did you use?

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11-05-2016 03:28 AM  10 months agoPost 7
MDSCUSTOMS

rrApprentice

North Wales, U.K.

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On the main screen it's 0.5mm thick, it's certainly stiff enough once moulded.

The easter egg moulds will probably be about the same.

Mark

I'm only here coz I'm not all there !!

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11-05-2016 03:38 AM  10 months agoPost 8
BrooklynJim

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Starlight, PA

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thank mark.. im going to give this a try, i actually have tower open on another window adding balsa blocks to my cart..

be safe brother, thanks again

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11-05-2016 06:18 AM  10 months agoPost 9
MDSCUSTOMS

rrApprentice

North Wales, U.K.

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Not a problem, just for info my plugs were not solid balsa but simple planked frames as you can see in the pic below. (Guess who used to build model boats lol) These are the plugs for my 222 screen and my Twinstar screen.

You can use thicker planking if you have a double curvature on your screen, this allows you to sand the correct curves in.

Once done and smoothed off, I stuck a thin paper coating over the top using PVA glue (as in my very first pic) It keeps the wood dust and any grain lines off the newly moulded screen

Mark

I'm only here coz I'm not all there !!

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11-05-2016 11:58 PM  10 months agoPost 10
BrooklynJim

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Starlight, PA

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ok, i did some prefitting, mock ups today..

this is going to be harder than i thought apparently the front windows are multi faceted, multi angled, and doing it this way the window lines will not follow the fuse lines...

will look like boards were put up against the front screen for the hurricane coming.. the sides, where the doors are to be are fine, but the front.. hmmmm

man.. and i thought i was going to get off easy on this one.. lol..

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11-07-2016 12:51 AM  10 months agoPost 11
MDSCUSTOMS

rrApprentice

North Wales, U.K.

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Looking at some close up pics of the real thing, that is a fairly straight forward main screen with very little double curvature, it does have some wrap around at the sides but nothing that you could not achieve using a simple plug like mine above.

Even my screens have some slight double curvature in them. If you use the planking method as I mentioned above, you can use slightly thicker planks of balsa and sand the slight curve in from top to bottom, the planking will wrap around the main frame to the sides so that will give you the curves there.

Mark.

I'm only here coz I'm not all there !!

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11-07-2016 12:58 AM  10 months agoPost 12
BrooklynJim

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Starlight, PA

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mark..
im working on it brother.. but scroll down on this site and youll get a good idea on the curvature of the screens.. it curves in all directions, including a slight bubble out

http://www.sbap.be/aircraft/nh90tth2/nh90tth2.htm

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11-07-2016 01:07 AM  10 months agoPost 13
MDSCUSTOMS

rrApprentice

North Wales, U.K.

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Nothing too difficult there, just take your time and you'll soon crack it.

Love that link, that is an excellent reference source to work from.

Mark

I'm only here coz I'm not all there !!

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11-12-2016 11:20 PM  10 months agoPost 14
BrooklynJim

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Starlight, PA

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thanks for all your suggestions mark..

but ive decided to go another route with the pht3 thats in the NH90

im probably going to sell the fuselage minus mechanics in the dates to come..

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