B737-800 / 737 MAX Project (BELGIUM)

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vidarf
Posts: 504
Joined: Fri May 12, 2006 11:37 am
Location: Narvik, Norway
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Post by vidarf »

If it is thin enough, plywood will bend in multiple directions. The best result, however, is achieved by bending the plywood over a "positive" mold.

Another option would be to saw slits in the ply, but not through it. In that case, I would simply make a positive mold and use thin strips of thin plywood to get the shape, glass it then use filler made from epoxy and glass balloons or wood flour (VERY fine wood dust) to get an even surface. Lot of sanding, but the end result would be very sturdy - almost no need for support. And the best thing about this technique is that you do not need to be very accurate. Gaps up to 3-4mm is acceptable (and preferred)! A plywood / glass fiber sandwich is extremely sturdy and light-weight. A curved screen could easily be made in sections, reusing the mold (providing you cover the mold with plastic) per section. If you mount a piece of plywood perpendicular to the edge, you could bolt the sections together. Easy to build, easy to mount and you do not need to reinforce the floors. :)

If someone does this, PLEASE remember to use protection against the dust!!!! And no, you cannot use polyester resin. Does not bond to wood very well.

For more on the "stick and glue" building technique, visit www.bateau.com (careful, I have two sets of plans for boats from that site - I am going to build one of them in a few years...)

mauriceb
Posts: 1051
Joined: Mon Aug 22, 2005 3:14 pm
Location: Gravenhurst, Ontario - Canada

Post by mauriceb »

melnato wrote:
Maybe I'm wrong but you are actually trying to make a spherical surface and to the best of my RAM plywood can only be bent in one dimension!


Yep it is dual curve...trying to convince my wife to let me do it 8)

Nat
Besides the fact you are nuts :D, why bother with a dual curve?. I really don't think it will add much to the experience. As far as I understand, the idea would be to have better focus since in theory, the whole screen would be at a constant distance from the projector.

But with wide throw projectors in particular, the focus difference at the edges is so minimal as to be undetectable (at least my aging eyes can't detect any difference). Once you are seated in the front office, you will not be able to tell the screen has a double curve especially since the curving from top to bottom will be very minimal anyway.

And on top of that, almost everybody forgets that the windows hide a huge portion of the screen anyway. So, can you explain why you are even thinking of trying that? Me thinks that it is just an excuse to lengthen the building process so you never have to show anybody that you can actually fly this thing since you will be building & 'improving' it forever :lol:

Seriously now, if you are so keen on 'improving' your fantastic visuals, why not go full blast and build a collimated system like someone has done. Now, THAT would be a huge improvement.

Maurice

vidarf
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Location: Narvik, Norway
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Post by vidarf »

Maurice, don't give him any ideas! He's already struggling to get acceptance for what madness he's cooked up so far! :lol:

mauriceb
Posts: 1051
Joined: Mon Aug 22, 2005 3:14 pm
Location: Gravenhurst, Ontario - Canada

Post by mauriceb »

vidarf wrote:
For more on the "stick and glue" building technique, visit www.bateau.com (careful, I have two sets of plans for boats from that site - I am going to build one of them in a few years...)
Damn you! This one looks very appealing to me:
http://www.bateau.com/proddetail.php?prod=HB18&cat=17

I will definitely blame you if I ever embark on this new adventure. That is if I'm still alive after telling my wife :D

Maurice

GDR
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Post by GDR »

Too late LOL

I am indeed cutting up the plywood, like Vidarf said. But, the projector positioninig based on the current screen is not suberb. So, thx to Nat :lol: , I broke it down and am rebuilding it full conical. He gave me the hint :lol: .

OK! You can say it. I'M NUTS 8)

In a few days I'll post some new pictures...

Maurice, I've already received a no go on the collimated setup. (It was in fact my inital idea to do. But, It was either this or packing the suitcases :oops: :lol:
Geert.

Full B737-MAX DSTD - ALL FDS
Sim-Avionics V1.965
P3D v4.5.13.32097
FSUIPC v5.154

What goes up, must eventually come down!
http://www.flightsim737.be
http://www.flightsim737max.be
http://www.flightsim737ng.be

vidarf
Posts: 504
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Location: Narvik, Norway
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Post by vidarf »

mauriceb wrote:I will definitely blame you if I ever embark on this new adventure. That is if I'm still alive after telling my wife :D

Maurice
Dude, I warned you! Besides, you're not in a position to complain! I have plans for this and this boat lying on my desktop! The latter is the one I'm going to build in some years (need to build the garage first).

Build a boat! Your wife can enjoy it too; I have a feeling she's not that into the sim... :twisted:

GDR, looking forward to your solution! I've just fallen off the wagon and started building a sim again. Today I tested ye olde Opencockpits display cards for the FLT ALT / LAND ALT displays (sorry Peter, your module was way too tempting, but reason prevailed and I decided to utilize what I already had lying around). When a 33 year old man giggles over the numbers 0 to 9 displayed on 10 LED digit displays, something's not quite right. So the momentum is back on full steam towards lunacy!

And lucky me: I now work at Elkjøp, a store in the Dixons group (like PC City in UK). A projector and a screen is in the future!
That being said: i feel like Chuck - our store theme is green, just like Buymore... Hopefully, a gorgeous agent is coming tomorrow.

There I go again - off topic. Vectors to subject, please!

Tomlin
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Post by Tomlin »

vidarf wrote: I've just fallen off the wagon and started building a sim again. [/i]
Is this in addition to the 737 sim or did you get rid of that project?
Eric Tomlin
Learjet 45

Waycross, Ga (KAYS)
www.Hangar45.net

vidarf
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Post by vidarf »

Nah, still the mighty 737 sim! If it ain't self-built Boeing, I ain't going! My sim eat Lear sims for breakfast! 8)

The reason I wrote "a sim again" is because the last time, I did not finish anything to a "usable" state (except for one - 1 - flight where the landing gear lever and the auto brake switch + annunciators where in operation).

Now I have a couple of "cold and dark" startups under my belt. :)

Tomlin
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Post by Tomlin »

vidarf wrote:Nah, still the mighty 737 sim! If it ain't self-built Boeing, I ain't going! My sim eat Lear sims for breakfast! 8)
Oh boy...I think you'd be surprised where we have the LJ45 sim world at now Vidarf! That's all I will say on that, other than we little jet guys have another first over the mighty 737- FL510! :twisted:

Now, back on topic. :arrow:
Eric Tomlin
Learjet 45

Waycross, Ga (KAYS)
www.Hangar45.net

GDR
Posts: 338
Joined: Fri Sep 26, 2008 3:16 am
Location: EBBR
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Visuals - UPDATED

Post by GDR »

Hi,

Ok. It took me some longer time, but I've finally had some time to take pictures of the new improved concial screen. (Just to make nat even a bit more jealous :twisted: )

Next is the covering of the screen. I'm using plywood for it. I've already tested it (no pictures yet of this phase) and it works nice. I'll explain it more in detail when I had the time of taking pictures.


Image Image
Image Image

To be continued. V1 - Rotate. . . 8)

Geert
Last edited by GDR on Sat Feb 08, 2014 5:53 am, edited 2 times in total.
Geert.

Full B737-MAX DSTD - ALL FDS
Sim-Avionics V1.965
P3D v4.5.13.32097
FSUIPC v5.154

What goes up, must eventually come down!
http://www.flightsim737.be
http://www.flightsim737max.be
http://www.flightsim737ng.be

GDR
Posts: 338
Joined: Fri Sep 26, 2008 3:16 am
Location: EBBR
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Post by GDR »

Hi,

As said, below some pictures with the plywood installed. As you can see they are squares for easy bending in the two directions. to fill up the gaps I'll be using latex mastique (image of the priduct will follow). This is easy to use. You fill up the gaps and when it is hard you can sand it down to the requested look and feel.

Image Image

More to come! :wink:
Last edited by GDR on Sat Feb 08, 2014 5:53 am, edited 1 time in total.
Geert.

Full B737-MAX DSTD - ALL FDS
Sim-Avionics V1.965
P3D v4.5.13.32097
FSUIPC v5.154

What goes up, must eventually come down!
http://www.flightsim737.be
http://www.flightsim737max.be
http://www.flightsim737ng.be

Tomlin
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Joined: Mon Aug 23, 2004 2:37 pm
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Post by Tomlin »

Very nice Geert!
Eric Tomlin
Learjet 45

Waycross, Ga (KAYS)
www.Hangar45.net

GDR
Posts: 338
Joined: Fri Sep 26, 2008 3:16 am
Location: EBBR
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Post by GDR »

Finally,

After a long business trip I've managed to finish the screen. Here're some pictures:

Image
Image
Image

And the almost completed sectional nose...

Image

Up to the next stage... :wink:
Last edited by GDR on Sat Feb 08, 2014 5:54 am, edited 1 time in total.
Geert.

Full B737-MAX DSTD - ALL FDS
Sim-Avionics V1.965
P3D v4.5.13.32097
FSUIPC v5.154

What goes up, must eventually come down!
http://www.flightsim737.be
http://www.flightsim737max.be
http://www.flightsim737ng.be

GDR
Posts: 338
Joined: Fri Sep 26, 2008 3:16 am
Location: EBBR
Contact:

Update

Post by GDR »

Hi,

It took a while to post an update, but I've been out for some time due to surgery. I couldn't wait to get back in constructing and flying my cockpit.
But, here's an update of my current situation:

Image

Image


I still need to hide some cables... But, this will be done once the interior liners are installed. Soon the pedestal is added (around Christmas).

More to come soon...

CU in the sky 8)
Last edited by GDR on Sat Feb 08, 2014 5:54 am, edited 1 time in total.
Geert.

Full B737-MAX DSTD - ALL FDS
Sim-Avionics V1.965
P3D v4.5.13.32097
FSUIPC v5.154

What goes up, must eventually come down!
http://www.flightsim737.be
http://www.flightsim737max.be
http://www.flightsim737ng.be

diegov
Posts: 47
Joined: Sun Dec 30, 2007 7:19 pm
Location: New Zealand

Post by diegov »

Screen looks great Geert. Need to think about my screen soon and yours is inspiring.

Cheers
Diego

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