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RE: All Composite 1/7th P-40E Mould Build
Well, there's another 8hrs....I love this! Cosmetically this part should be ABSOLUTELY STUNNING!! :P
http://i1069.photobucket.com/albums/.../PB240030c.jpg http://i1069.photobucket.com/albums/.../PB240031c.jpg |
RE: All Composite 1/7th P-40E Mould Build
This is 6 Oz tape. You don't want to know how cheap I get this stuff surplus. :)
One man's trash.... Talk about saving time! http://i1069.photobucket.com/albums/...2/PB240031.jpg http://i1069.photobucket.com/albums/...2/PB240032.jpg http://i1069.photobucket.com/albums/...2/PB240033.jpg http://i1069.photobucket.com/albums/...2/PB240035.jpg http://i1069.photobucket.com/albums/...2/PB240036.jpg http://i1069.photobucket.com/albums/...2/PB240037.jpg |
RE: All Composite 1/7th P-40E Mould Build
OK time to do a 'splainin' - what am I doing!?There are a few things going on here at once but I'll do my best to take some time and explain my approach. I could lay down 2 layers of 6 Oz cloth, peel ply, blotter, bag it, and be done with it. Does that sound like me?? HECK NO!!No, I want to capture that late 20th century, industrially manufactured, moulded-in, toy-like, monotonal opaque plastic look that people are drawn to and they don't know why.The other thing I'm trying to do is make an airframe with a factor of safety of 1.1 - what's that mean? - that means just strong enough and that's it.The main intent here is to saddle the firewall to the wing. In the following photos you can see where I've added 2 layers of a heavy 9 Oz cloth where the firewall and also the wing mounting blocks at the rear of the cockpit will be installed. Essentially they are 4" wide composite integral bulkheads. They are directly connected again by 9 Oz cloth through the chin plate in the firewall subassembly and also 2 layers of heavy cloth in the aft portion of the wing saddle.Another concern are tail loads. Pitch loads are handled pretty well by the inherent "egg" cross section of the rear fuselage, but this capacity will be greatly enhanced when the port and starboard subassemblies are joined using 1" stips of 9 Oz cloth.Yaw loading is transferred down the sides of the fuselage wall through and into the reinforced wing saddle by the 6 Oz tape that I've also overlapped along the centerline to form an integral longeron for additional beam strength.If you look closely you will notice that there are areas where the fuselage will be only the thickness of the saturated cssv that forms the camouflage surface. Will this be enough?? Honestly, I don't know. That's why I tried it in a couple of small areas that are supported peripherally. I can say this much - I expect it to be as puncture resistant and as strong in tension as any iron on film.I've also improved the flow through the integral exhaust manifolds.http://i1069.photobucket.com/albums/.../PB240030c.jpghttp://i1069.photobucket.com/albums/.../PB240031c.jpghttp://i1069.photobucket.com/albums/.../PB240032c.jpghttp://i1069.photobucket.com/albums/.../PB240033c.jpghttp://i1069.photobucket.com/albums/.../PB240034c.jpghttp://i1069.photobucket.com/albums/.../PB240035c.jpghttp://i1069.photobucket.com/albums/.../PB240036c.jpghttp://i1069.photobucket.com/albums/.../PB240037c.jpghttp://i1069.photobucket.com/albums/.../PB240038c.jpghttp://i1069.photobucket.com/albums/.../PB240039c.jpghttp://i1069.photobucket.com/albums/.../PB240040c.jpghttp://i1069.photobucket.com/albums/.../PB240041c.jpg
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RE: All Composite 1/7th P-40E Mould Build
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RE: All Composite 1/7th P-40E Mould Build
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RE: All Composite 1/7th P-40E Mould Build
...another breadcrumb :)http://i1069.photobucket.com/albums/.../CHINLAYUP.jpg
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RE: All Composite 1/7th P-40E Mould Build
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RE: All Composite 1/7th P-40E Mould Build
These joins are all prepped with 80 grit and alcohol.Join Rear Lower Fuselage Seamhttp://i1069.photobucket.com/albums/...2/PC290003.jpgInsert Ply Dowel Bulkheadhttp://i1069.photobucket.com/albums/...2/PC300010.jpghttp://i1069.photobucket.com/albums/...2/PC300013.jpgI was having to wait for the ply bulkhead insert to cure so that I could remove the saddle sections for access when joining the firewall chin subassembly.http://i1069.photobucket.com/albums/...2/PC310015.jpghttp://i1069.photobucket.com/albums/...2/PC310016.jpghttp://i1069.photobucket.com/albums/...2/PC310017.jpgCowl mount blocks held in place temporarily with quick 5 minute epoxyhttp://i1069.photobucket.com/albums/...2/P1030032.jpghttp://i1069.photobucket.com/albums/...2/P1030033.jpgNext time I will have access to allow attaching the firewall chin in the same operation as the lower rear seam and dowel bulkhead.http://i1069.photobucket.com/albums/...2/P1030028.jpg
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RE: All Composite 1/7th P-40E Mould Build
...not a lot of time today, but I did find the hour and a half to assemble the chin to the main fuselage - now we wait.... I know, I know, what else is new :)http://i1069.photobucket.com/albums/...2/P1090048.jpghttp://i1069.photobucket.com/albums/...2/P1090049.jpghttp://i1069.photobucket.com/albums/...2/P1090050.jpghttp://i1069.photobucket.com/albums/...2/P1090051.jpg
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RE: All Composite 1/7th P-40E Mould Build
Canopy Frame Serial 000002 :)http://i1069.photobucket.com/albums/...anopyFrame.jpg
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RE: All Composite 1/7th P-40E Mould Build
How do you arrive at a unique airplane?? You nique up on it of course!
Slowly, but rest assured, assuredly, I am moving toward something here. lol Green leaves a lot to be desired in the way of opacity. Untrimmed Weight - 820 grams or approx. 1.8lbs http://i1069.photobucket.com/albums/...2/P1100047.jpg http://i1069.photobucket.com/albums/...2/P1100050.jpg http://i1069.photobucket.com/albums/...2/P1100051.jpg http://i1069.photobucket.com/albums/...2/P1100052.jpg http://i1069.photobucket.com/albums/...2/P1100055.jpg http://i1069.photobucket.com/albums/...2/P1100056.jpg |
RE: All Composite 1/7th P-40E Mould Build
I've carved enough hard balsa block and melted enough plastic in my mother's old oven to know that waiting overnight for a canopy frame to set up is almost too good to be true! Not bad for #2, but canopy #3 will be even better... :) http://i1069.photobucket.com/albums/...elopment/1.jpg http://i1069.photobucket.com/albums/...elopment/2.jpg http://i1069.photobucket.com/albums/...elopment/3.jpg http://i1069.photobucket.com/albums/...elopment/4.jpg
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RE: All Composite 1/7th P-40E Mould Build
I've got something cooking tonight - wanna take a guess??http://i1069.photobucket.com/albums/...ment/Cowl1.jpg
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RE: All Composite 1/7th P-40E Mould Build
You guessed it - that's a lower cowl section.The tool in all rights should have been at least a two piece mould with the forward section pulling straight off the nose.Don't be fooled by the test part, rather let it convince you of the durability of the materials involved. I stood on the mould and pulled and twisted that thing with all my might.Pile it into the ground, dust it off, pop out the dings and stick it back on. :)Lets see you do that with an ABS cowl - NOT!!We conquered the opaqueness issue with a couple of coats of automotive paint in the mould.So the next fuselage will get brown camo followed by green paint.http://i1069.photobucket.com/albums/...t/P1120053.jpghttp://i1069.photobucket.com/albums/...t/P1120052.jpg
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RE: All Composite 1/7th P-40E Mould Build
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RE: All Composite 1/7th P-40E Mould Build
Things seem to have quieted down on your thread...
got any news for us? |
RE: All Composite 1/7th P-40E Mould Build
...not to worry, I'm dealing with a difficult landlord this summer - I'll be back at it shortly
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RE: All Composite 1/7th P-40E Mould Build
New shop - new building season :)
Wing Mould - Section #2 Flooring Laminate Old Lamp (tubing) Furniture Sliders 1/4-20 thread inserts Aluminum T-slot Extrusion Carnauba Wax Hold on....here we go again :) http://i1069.photobucket.com/albums/...g/P6250011.jpg http://i1069.photobucket.com/albums/...g/P6250010.jpg http://i1069.photobucket.com/albums/...g/P6250009.jpg http://i1069.photobucket.com/albums/...g/P6250008.jpg http://i1069.photobucket.com/albums/...g/P6250004.jpg http://i1069.photobucket.com/albums/...g/P6250003.jpg http://i1069.photobucket.com/albums/...g/P6250005.jpg http://i1069.photobucket.com/albums/...g/P6250002.jpg http://i1069.photobucket.com/albums/...g/P6250001.jpg http://i1069.photobucket.com/albums/...g/P6250012.jpg |
RE: All Composite 1/7th P-40E Mould Build
<![if gte mso 9]><xml><w:WordDocument><w:View>Normal</w:View><w:Zoom>0</w:Zoom><w:DoNotOptimizeForBrowser /></w:WordDocument></xml><![endif]><p class="MsoNormal">These air fittings will be filled with clay and cast in place along with the o-rings.<span style="mso-spacerun: yes"> </span>I'll rough up the OD's with a file first to ensure adhesion.</p><p class="MsoNormal"></p><p class="MsoNormal">Inexpensive, yes; effective, time will tell.</p><p class="MsoNormal"></p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280006.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280005.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280003.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280004.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280002.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280001.jpg</p>
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RE: All Composite 1/7th P-40E Mould Build
<![if gte mso 9]><xml><w:WordDocument><w:View>Normal</w:View><w:Zoom>0</w:Zoom><w:DoNotOptimizeForBrowser /></w:WordDocument></xml><![endif]><p class="MsoNormal">Clay holds O-ring flat to face. (8 places)</p><p class="MsoNormal">Barbed part ejector port also included in saddle area.</p><p class="MsoNormal"></p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280001.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280002.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280006.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280003.jpg</p><p class="MsoNormal">http://i1069.photobucket.com/albums/...2/P6280004.jpg</p>
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RE: All Composite 1/7th P-40E Mould Build
well, it better be right 'cause it's kinda permanent...
http://i1069.photobucket.com/albums/...2/P7030001.jpg http://i1069.photobucket.com/albums/...2/P7030002.jpg http://i1069.photobucket.com/albums/...2/P7030004.jpg http://i1069.photobucket.com/albums/...2/P7030003.jpg |
RE: All Composite 1/7th P-40E Mould Build
surface veil to prevent the heavier weaves from showing through over time
http://i1069.photobucket.com/albums/...P7030001-1.jpg http://i1069.photobucket.com/albums/...P7030002-1.jpg |
RE: All Composite 1/7th P-40E Mould Build
6 Oz Tape - Outer Flange Support 9 Oz Cloth - 1st Layer http://i1069.photobucket.com/albums/...2/P7040001.jpg http://i1069.photobucket.com/albums/...2/P7040002.jpg |
RE: All Composite 1/7th P-40E Mould Build
no point in throwing another $100 in epoxy and cloth at reinforcing this section until I've seen the cavity - if all turns out well, I can always rough it up with a cup wheel on the grinder and lay down a few more layers of heavy cloth
hopefully this will set up enough to remove the forms tomorrow - now we wait....lol http://i1069.photobucket.com/albums/...2/P7040002.jpg http://i1069.photobucket.com/albums/...2/P7040001.jpg http://i1069.photobucket.com/albums/...2/P7040005.jpg http://i1069.photobucket.com/albums/...2/P7040004.jpg |
RE: All Composite 1/7th P-40E Mould Build
These flanges are 2 layers of 9 Oz cloth over the tool coat.
It works well. The flange is firm, but still somewhat moveable. http://i1069.photobucket.com/albums/...2/P7050001.jpg http://i1069.photobucket.com/albums/...2/P7050002.jpg |
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