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Old Jul 20, 2014, 10:01 PM
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Doug W's Avatar
United States, WA, Seattle
Joined Jul 2010
433 Posts
737-800!!

Finally, after months of contemplation, the long awaited (at least for me) ultimate mod is underway. I have successfully stretched the Windrider 737 kit to the -800 length, by adding approximately 6.29" forward at 5.65" aft. The right half is together- the left half I have the pieces in place to provide a sense of the growth of the aircraft.

Several issues abounded in the stretch- a big one was how to ensure structural strength (such as will the plugs carry and structure? Answer: No, actually.) I installed internal beams, and the plugs carry almost zero torsional load. Where to cut it forward? What happens to the battery bay? What happens to CG?

Things to do include building a tail bumper (yep, plan to- may even make it retractable too), raising the nose gear bay a bit (standard). Since I am making it common with my other Alaska (the wing that has the flaps and spoilers, I plan to use the common wing and adjust the flap schedule slightly.) I plan to be able to switch between fuselages at the field in under 10 minutes.

I will have more pics, including internals and a comparison to -700 in the coming days...just a teaser for now.
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Old Jul 20, 2014, 11:04 PM
Fly and let Fly!
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United States, CO, Grand Junction
Joined May 2010
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Careful... You might make Ming feel bad..!!
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Old Jul 20, 2014, 11:24 PM
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Hong Kong
Joined Jun 2002
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Can't sleep!
Feel no good..
Look a like cutting tuna
本まぐろ 44KG bluefin Cutting Tuna Fish sushi part 1 (5 min 54 sec)



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Old Jul 21, 2014, 12:16 AM
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Doug W's Avatar
United States, WA, Seattle
Joined Jul 2010
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Quote:
Originally Posted by Ming View Post
Can't sleep!
Feel no good..
Look a like cutting tuna
https://www.youtube.com/watch?v=ltEqIXxBoxg


Ming Lou
You're right Ming- it does kinda look like a cut tuna! Can't wait for it to be done- I'm really excited on this modification program.
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Old Jul 21, 2014, 04:56 AM
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Joined Jun 2014
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what does it take to get the look. did you use vinyl ? Im doing a RNZAF one
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Old Jul 21, 2014, 11:46 AM
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Doug W's Avatar
United States, WA, Seattle
Joined Jul 2010
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Originally Posted by 737 nz fan View Post
what does it take to get the look. did you use vinyl ? Im doing a RNZAF one
Yep, 2mm vinyl. Oracal 751 is the trick. It's used commonly in full-size vehicle graphics/car wraps. Hundreds of colors available.

You could also use Oracal 651, at 2.5MM but it doesn't take curves as well. I used 651 on the top of the wings and lifting surfaces.

-Doug W
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Old Jul 21, 2014, 08:06 PM
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Australia, QLD, Toowoomba
Joined Oct 2011
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Hi Doug

Glad you finally got around to this project, looking good so far, it's going to look such a nice plane as an 800 model, I will follow this with 'wide eyes' my other WR 787 is still in the box waiting to see how it can be stretched into a '9' model

Mike
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Old Jul 21, 2014, 10:38 PM
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Doug W's Avatar
United States, WA, Seattle
Joined Jul 2010
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Originally Posted by limodune View Post
Hi Doug

Glad you finally got around to this project, looking good so far, it's going to look such a nice plane as an 800 model, I will follow this with 'wide eyes' my other WR 787 is still in the box waiting to see how it can be stretched into a '9' model

Mike
I'm glad I finally got around to it as well- I've had some pretty sizeable delays of recent due to well, life, but am back on track. And I might add, excited to keep building and pushing the mod envelope.
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Old Jul 21, 2014, 10:55 PM
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Australia, VIC, Elsternwick
Joined Feb 2002
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Quote:
Originally Posted by Doug W View Post
Yep, 2mm vinyl. Oracal 751 is the trick. It's used commonly in full-size vehicle graphics/car wraps. Hundreds of colors available.

You could also use Oracal 651, at 2.5MM but it doesn't take curves as well. I used 651 on the top of the wings and lifting surfaces.

-Doug W
Doug, how does the finish look with the Oracal? I have seen videos of it applied in strips and wonder if you see a whole lot of lines in the overlaps.
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Old Jul 22, 2014, 07:27 PM
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Chi-Town, Il. U.S.A.
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I'm sorry, I just had to do this: only works on level, smooth runways...LOL
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Old Jul 22, 2014, 10:38 PM
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United States, WA, Seattle
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Originally Posted by stevebarrow View Post
Doug, how does the finish look with the Oracal? I have seen videos of it applied in strips and wonder if you see a whole lot of lines in the overlaps.
Other than the radome which is exceedingly hard to do in one piece, it is very tough to see overlaps. I make most (if not all of my overlaps) at the molded panel line sections so they largely disappear. I will say I purposely use the overlap at the joints of the control surfaces, which provides another measure of surety the ailerons, elevators or rudder won't flutter off.

Look at the previous page that has a pic of my RAAF Wedgetail. It is difficult if not impossible to see overlaps. That said, if you get 6-12" from the surface of the model, you can see them of course. but most flaws show up at that distance.
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Old Jul 22, 2014, 10:42 PM
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Chi-Town, Il. U.S.A.
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At 6 to 12 FEET., all you see is a great lookin' aircraft...
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Old Yesterday, 04:09 AM
Heli Mad
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Australia, VIC, Elsternwick
Joined Feb 2002
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Quote:
Originally Posted by Doug W View Post
Other than the radome which is exceedingly hard to do in one piece, it is very tough to see overlaps. I make most (if not all of my overlaps) at the molded panel line sections so they largely disappear. I will say I purposely use the overlap at the joints of the control surfaces, which provides another measure of surety the ailerons, elevators or rudder won't flutter off.

Look at the previous page that has a pic of my RAAF Wedgetail. It is difficult if not impossible to see overlaps. That said, if you get 6-12" from the surface of the model, you can see them of course. but most flaws show up at that distance.
Thanks Doug
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