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Old Dec 13, 2012, 04:03 PM
Build'em and Crash'em
Ken Lapointe's Avatar
Narragansett, RI
Joined Oct 2000
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Wow, looks great. Much larger than I thought it would be
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Old Dec 13, 2012, 07:13 PM
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Gamalier's Avatar
USA, NC, Hope Mills
Joined Jan 2010
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Hey Pekos have you checked the weight of the empty fuselage yet? Just curious about what's the weight of a ply and balsa plane this size. My 1/6 L-39 empty fuselage was 3000 grams and is way smaller than yours.
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Old Dec 14, 2012, 04:13 AM
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Czech Republic, Hlavní město Praha, Prague
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hi, empty fuselage 2700gr. and wings 1000gr.
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Old Dec 14, 2012, 07:23 AM
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Quote:
Originally Posted by pekos View Post
hi, empty fuselage 2700gr. and wings 1000gr.
For a plane that big that's awesome!! Should weight around 20-22 pounds with 14s and a 120 fan easily if not less. With its size it should float really nice.
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Old Dec 14, 2012, 07:56 AM
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I hope that it will be up to 9 kg.
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Old Dec 14, 2012, 07:58 AM
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landing gear
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Old Dec 14, 2012, 10:13 AM
Firecracker!
BillO's Avatar
San Francisco & Santa Cruz
Joined Oct 2004
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Quote:
Originally Posted by SergeyK View Post
I would still like to hear a little bit about your Sketchup workflow.
I guess my question got buried under well-deserved raves.

Sergey.
I second that - c'mon, throw us a bone!
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Old Dec 14, 2012, 01:47 PM
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for Sergey K. : my knowledge of English isn´t at a high level, I will answer you, but I have to prepare for it, ok?
for Billo to.. :-)

precisely, we consider the plane and all the accessories:

fuselage 2582gr.
wings 1027gr.
EDF with motor. 850gr.
landing gears 890gr.
servos, esc,cables 850gr.
2x6s 6000mAh. 1800gr.
altogether : 7149gr.
+ vynil covering and cabin cockpit = 7500 - 7800 gr.
it looks good so far
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Old Dec 14, 2012, 10:38 PM
Firecracker!
BillO's Avatar
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Thanks in advance for taking the time to explain even a little bit. Clearly your Sketchup skills are at a very high level!
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Old Dec 15, 2012, 03:10 PM
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D_FAST's Avatar
Denver CO
Joined Apr 2008
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Pekos, outstanding work!

@ Billo,SergeyK
Im trying come to grasp more with this style of building, Here is a simple vid of how im gonna approach it.

Create Skin/3dmodel
Create formers/Stations
Create Splines
Create Stingers/spine
Create knockouts/lightening holes

example_workflow (4 min 45 sec)
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Old Dec 15, 2012, 05:09 PM
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wow, very interesting work, I am a beginner and I draw everything by hand. I draw without thickness, because the complicated image saving up computer performance.
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Old Dec 15, 2012, 05:19 PM
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For example, this
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Old Dec 15, 2012, 05:35 PM
Firecracker!
BillO's Avatar
San Francisco & Santa Cruz
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Dan, that looks great, I see where you're going.

Pekos, that is such a beautiful drawing. But when you cut the parts on the laser cutter, how does the machine know how wide to cut the slots where the parts intersect if there is no thickness?
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Old Dec 15, 2012, 06:42 PM
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United States, NY, Kings
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I am a beginner too, and I had to discover things as I went along, that's why I'm interested what others came up with.

I drew with the thickness as it helped me visualize the complete model
http://www.rcgroups.com/forums/showthread.php?t=1442267

And I had to manually clone each part and drag it to a separate area and arrange on a flat plane to print out.

Did you manually draw the lightening holes on each rib separately or used tome kind of shortcut ?
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Old Dec 15, 2012, 07:12 PM
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Denver CO
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It was just one way and was done on the most simplest of geometry, but like billo said you get the workflow.. The biggest is getting your wing loading,fsa, etc... All calculated then build your model. Then begin your RC conversion using slices and such. Placing electronics, etc along the way.

And yes use mirror and array to speed up work flow.
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