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I Want To Build A Model Airplane  
User currently offlineSwissA330 From Switzerland, joined Mar 2002, 614 posts, RR: 14
Posted (12 years 3 weeks 1 day 1 hour ago) and read 6789 times:

Hi Guys

I'm thinking of building myself a 1/50 Airplane out of Balsa wood (Cockpit etc), and other materials.

I thought of an A330-200, which would then be a bit longer than 1 meter.

Does anyone of you have some good ideas that could me bulid it?
Does anyone know where i can find exact measures etc of the A330-200. I tried airbus.com, but it's not that much of a help...

THX, Patrick

swissair/+/ we care
5 replies: All unread, jump to last
User currently offlineDC-10 Levo From United Kingdom, joined Nov 2001, 3432 posts, RR: 3
Reply 1, posted (12 years 3 weeks 1 day ago) and read 6737 times:

The aircraft data/history page here will help you:



User currently offlineCptkrell From United States of America, joined Sep 2001, 3220 posts, RR: 12
Reply 2, posted (12 years 2 weeks 4 days 14 hours ago) and read 6621 times:

Dear SwissA330; sorry for the late reply. I am assuming (maybe wrongly?) that this project may be one of your early ventures into a model so large. If you are committed to this endeavor, I might suggest that you also purchase or borrow one of the commercially available, smaller scale, prebuilt examples of the aircraft to three dimensionally assist you in interpreting the measurements and drawings mentioned above by DC10 Levo.

Also, modern airliners typically have very smooth, finished surfaces. Balsa by nature is pretty easy to work with, especially in the larger 1:50 scale you are addressing, however, it is also very difficult to seal and finish-coat to an endurable "class-a" surface I think you would desire. I would suggest you inquire of local patternmaker and tooling supply shops in your area about the types of lightweight structural modeling foam (available in blocks of varying sizes, densities, etc) available for your project. The three dimensional surface development should progress a bit easier than using balsa, and after you are satisfied with your model shapes, a couple of applications of primer-surfacer and maybe a bit of spot/filler and putty will get you in the position to think about final paint, livery, etc. Structural modeling foam is quite stable and will not eventually telegraph surface deviations so common in balsa and even in properly cured mahogany. Furthermore, even thin parts such as wings and fins will not warp as wood will. Abscence of abuse, these items should remain relatively sound.

There is, of course, the option of using epoxy or polyester reinforced fiber, however, I personally feel that is quite a bit more labor intensive irrespective of whether you develop and cast a mold from a master model or simple coat a "core" model.

The professionals you talk to regarding these modeling supplies and finishes will
also supply you with health/safety guidelines...take their recommendations seriously, as even though working with such materials is not difficult, there are, indeed, (mostly) inhalation precautions that should be respected. Kind regards...Jack

all best; jack
User currently offlineSwissA330 From Switzerland, joined Mar 2002, 614 posts, RR: 14
Reply 3, posted (12 years 2 weeks 1 day 1 hour ago) and read 6590 times:

CptKrell, Thx very much, I will now try to locate some local shops to get some info's and help! Hope it'll work  Smile/happy/getting dizzy
Yes, it is my 'first time'  Smile/happy/getting dizzy

Greetz, Patrick

swissair/+/ we care
User currently offlineL-188 From United States of America, joined Jul 1999, 30102 posts, RR: 58
Reply 4, posted (12 years 2 weeks 22 hours ago) and read 6587 times:

the types of lightweight structural modeling foam (available in blocks of varying sizes, densities, etc

I don't know if they sell that blue insulation foam over there like they do in the states, but that is pretty easy to work with. You glue them together and then whittle it down. You can also hot wire the stuff.

Common name for the stuff here is Blueboard, go into any home improvement store here and they will know exactly what you are talking about.

User currently offlineCptkrell From United States of America, joined Sep 2001, 3220 posts, RR: 12
Reply 5, posted (12 years 2 weeks 19 hours ago) and read 6579 times:

I am thinking that the blue foam that L188 refered to might not be compatable with laquer-based fillers, paints, etc., if you plan on using such (the foam may "melt"). However, it is relatively inexpensive and a simple trial experiment with this material would be a good idea.

The modeling foam I referred to is a very dense, closed cell material that I found compatible with any and all other finishing materials. If you can't find it, or you have success with the blue foam L188 talked of, I believe enamels, epoxies and water base acrylics will give you a good finish if laquers cannot be used. Let us know how your project progresses! Kind regards...Jack

all best; jack
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