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  #31  
Old 07-06-2018, 03:46 AM
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Thanks technoid.

Even shed some blood on this project Wednesday-- twice!
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  #32  
Old 07-06-2018, 08:41 AM
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I would say something about balsa plywood in a foam board biplane but it would be sarcastic.

Any way looks good
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  #33  
Old 07-10-2018, 12:01 AM
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Thanks guys. All comments appreciated.
First to admit this is all new stuff to learn, and the design process is part of the fun.
Seemed to me 1.5 lbs of battery and motor with the 600W+ power plant up front needed some light plywood, and the the same for stronger wing roots with the 3 piece wings. Designing based on RF physics as done me well so far, but if it crashes, no major loss, it's just foam and I'll have gained some experience and knowledge regardless.

A little more work on the RF version graphics tonight.
Do not want to waste too much effort on a fancy "paint" job as do not know how well it will fly, but being optimistic, do want to have some decent contrast colors.
Just some tail feather ideas for now-- am sure some of the RF CS will end up on the real plane and some not.
Attached Images
File Type: jpg FBB render20.jpg (79.4 KB, 7 views)
File Type: jpg FBB render21.jpg (79.0 KB, 8 views)
File Type: jpg ScreenShot1531193244.jpg (93.5 KB, 7 views)
File Type: jpg ScreenShot1531191887.jpg (406.7 KB, 7 views)
File Type: jpg ScreenShot1531193117.jpg (243.5 KB, 8 views)
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  #34  
Old 07-10-2018, 12:25 AM
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Very cool love the pictures.
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  #35  
Old 07-23-2018, 11:06 PM
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The learning process continues.
While some rework is being done the RW model, I started adding and animating the aileron push rods of the RF version Friday.
New territory on that as after adding what was observed as typical linkage in driving the upper ailerons, the amount of throw-- and keeping the animation realistic-- was very small. Have been flying the sim version with +/- 30 degrees, but was only able to reach 10 degrees and still be realistic.

Today a coworker suggested I use Draftsight to analyze the range of motion, and the answer was obvious in about 5 minutes this evening. The culprit in this case was the location of the pivot holes for the push rods. Other linkages I'm guessing are ok for wings with less stagger. The FBB has 19 degrees, and the other method of using regular control horns does not work.

So, a few changes to the 3d model and physics, and realistic animation with the full 30 degrees of throw is in place.
Again, RF has helped with design process of the RW model.

Details on what the actual control horns will be are yet to be determined, but they will certainly get a bit more reinforcement than show in the 3d model.



Enjoy a great week.
Attached Images
File Type: jpg ScreenShot1532152493.jpg (309.6 KB, 14 views)
File Type: jpg linkage measurement.jpg (302.4 KB, 15 views)
File Type: jpg linkage measurement with control horns.jpg (297.1 KB, 11 views)
File Type: jpg ScreenShot1532398971.jpg (255.9 KB, 14 views)
File Type: jpg FBB render23.jpg (417.5 KB, 13 views)
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  #36  
Old 07-24-2018, 12:07 AM
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Thanks for the update and cool pictures that will be a fun plane to fly. Both real world and realflight
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  #37  
Old 07-26-2018, 04:32 AM
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As always, looking good. Maybe one day I'll be back into it and you guys can teach me something.
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  #38  
Old 07-27-2018, 03:13 PM
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looks a lot like how i have my Davie system Stampe biplane setup on the aileron rods and control links FE and that works flawless for me
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  #39  
Old 07-31-2018, 08:52 PM
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Thanks guys.

Doug: have any pictures of the Stampe you can post?
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  #40  
Old 08-01-2018, 11:39 AM
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not to many but here is what i have i took a close up of the Ailerons rod connection i have no room for the hobby any more this is just crammed with to much stuff
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File Type: jpg 030.jpg (309.9 KB, 14 views)
File Type: jpg 041.jpg (239.5 KB, 14 views)
File Type: jpg 028.jpg (294.0 KB, 14 views)
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  #41  
Old 08-13-2018, 06:10 AM
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Doug,

Thanks for the pix!
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  #42  
Old 08-13-2018, 06:35 AM
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A little more RW FBB progress.

Rear fuselage doublers added.
Fuselage sides attached, rear formers installed, and foam trimmed for cabane attachment. Reject fuselage sides made good clamping surfaces.
Took care to get the fuselage straight when gluing the tail post (paper has a center line to use as the alignment guide). No, that is NOT the size of the stabilizer! To be further sure of alignment, added some scrap FB during all the fuselage sides gluing process.

Quick test assembly to compare with the mockup (made what seems like decades ago..).
Most notable change was to widen the fuselage (space needed for 4S 5AH pack and 75A ESC).

Enjoy a great week.
Attached Images
File Type: jpg DSCN0819s.jpg (320.8 KB, 7 views)
File Type: jpg DSCN0829s.jpg (335.8 KB, 9 views)
File Type: jpg DSCN0830s.jpg (310.2 KB, 7 views)
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  #43  
Old 08-13-2018, 08:15 AM
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Thanks for the update and cool pictures. Keep on Truckin'.
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  #44  
Old 08-19-2018, 03:55 AM
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Some more progress:
LG cross piece made and attached. Like A.U.W. sneaks up on you, so the LG didn't look that wide in Draftsight.. Jury is still out as to whether to stay with the 1/8" wire or move up a diameter. The 3" spoked wheels in the RF version are ok, but the plastic is too soft and would quickly wear out-- they are not for planes of this weight. Also added the top rear deck and am impressed how much the structure is strengthened. Was a pretty nice day, so the FBB went outside for the first time for a progress photo shoot.

For the RF version, a little 3d modeling and CS work tonight to add the detail for the aileron servos and their wiring. Clearly the lead from those servos will not reach the RX and extensions will be needed, so it was time for some more details.

Enjoy a a great rest of the weekend and week ahead.
Attached Images
File Type: jpg DSCN0835s.jpg (312.4 KB, 4 views)
File Type: jpg DSCN0839s.jpg (494.0 KB, 6 views)
File Type: jpg DSCN0838s.jpg (325.4 KB, 7 views)
File Type: jpg DSCN0840s.jpg (499.3 KB, 5 views)
File Type: jpg DSCN0842s.jpg (493.8 KB, 6 views)
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  #45  
Old 08-19-2018, 03:57 AM
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Cool thanks for the update.. looking good!
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