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  #76  
Old 07-28-2017, 12:31 PM
Moto-Guzzi Moto-Guzzi is offline
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Originally Posted by doug schluter View Post
should be a mighty fine Jenny when your done technoid , i'm looking forward to trying it out as well as Moto-Guzzi's CS's
Thank you Doug, I hope I can render something worthy of all this effort...I know I could use some help with cockpits and instrument panels
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  #77  
Old 07-28-2017, 01:16 PM
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Thanks everyone for your comments I'm getting ready to take my wife to a Doctor's appointment so I'll just use this post to answer all of the comments.

I found some cool plans a few days ago but forgot to share them, they're front and side views of what they list as JN4-D and they're original 1918 Curtiss plans. Here's two links directly to them on the site they're hosted on. The bottom link is to the University of Virginia Library I found them on. Very cool stuff. I'll also put the text from their site in a quote box.

Quote:
J is for Curtiss “Jenny”

The JN-4 “Jenny” was one of a series of biplanes built by the Curtiss Aeroplane Company of Hammondsport, N.Y. Although the “Jenny” never saw combat duty, it was used chiefly as a training airplane in World War I and as many as 95% of all U.S. pilots learned to fly in a “Jenny.” At the conclusion of the war hundreds of well-trained pilots familiar with the “Jenny” returned to the U.S. The “Jenny” was the airplane of choice for many and became the workhorse of American post-war civil and commercial aviation.

Contributed by Edward Gaynor, Head of Description and Specialist for Virginiana and University Archives
https://smallnotes.library.virginia....enny_front.jpg

https://smallnotes.library.virginia....Jenny_side.jpg

http://smallnotes.library.virginia.e...8/26/j-is-for/
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  #78  
Old 07-28-2017, 02:15 PM
Moto-Guzzi Moto-Guzzi is offline
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Wow very cool blueprints…two things I find interesting, one I’ve noticed before and one I haven’t….

The cockpit combings are not identical in curvature as the cockpit openings are not exactly the same. Don’t know why that is but I’ve noticed that before in photos and models…Curious as to why, seems like it would take more effort to make them unique rather than identical…radiuses, measurements, templates etc...always wondered what the deal was with that, has to be a reason...

The other thing is in the side view…. In the “horizontal” attitude it seems to be quite a bit of down-thrust on the prop….unless she flies with a more tail-down attitude than what is depicted?

Never noticed that before…
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  #79  
Old 07-28-2017, 02:53 PM
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Originally Posted by technoid View Post
Yeah I was thinking the same thing and I may look into a method abaser shared with me for doing that.. but that's a maybe so don't count on it. From what I remember he created a separate poly between each rib and then pulled them down a little to simulate a droop. But that would just make an indented flat spot not a nice rounded area like the cloth would make. I think I tried it once and didn't like my result at the time. And that would definitely eat up some resources I might need other places too. But I'll keep it in mind. And a good artist would be able to do that in the CS too.
Normal/bump maps can do that with paint and a fraction of the triangles.
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  #80  
Old 07-28-2017, 04:09 PM
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Originally Posted by legoman View Post
Normal/bump maps can do that with paint and a fraction of the triangles.
Thanks for the info. I've never learned any of that stuff so I'll just do it like I always do, that's good enough for me. Oh.. I'll add some AOA before I finish but I generally wait until the end before I add stuff like that (chamfer and aoa).
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  #81  
Old 07-28-2017, 04:10 PM
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Originally Posted by Moto-Guzzi View Post
The other thing is in the side view…. In the “horizontal” attitude it seems to be quite a bit of down-thrust on the prop….unless she flies with a more tail-down attitude than what is depicted?

Never noticed that before…
According to what I've read that's the way they did it at first but changed it later to be straight. The plane must fly tail down with the thrust line like that.
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  #82  
Old 07-28-2017, 04:35 PM
Moto-Guzzi Moto-Guzzi is offline
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I read she was inherently unstable, requiring constant control unput from the pilot...they said she made good pilots, because once you learned on a Jenny, everything else was easy!
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  #83  
Old 07-28-2017, 10:38 PM
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I had to go back and redo my upscaled older Jenny as I've learned so much from all of you since I did it long ago. I found myself ashamed at all the flaws I needed to fix.

I'm still reading here a couple times a day technoid and it's looking like another another another great model from you.
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  #84  
Old 07-28-2017, 11:59 PM
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Quote:
Originally Posted by Moto-Guzzi View Post
Thank you Doug, I hope I can render something worthy of all this effort...I know I could use some help with cockpits and instrument panels
haha i have been looking for instrument panels for the Jenny 8)
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  #85  
Old 07-29-2017, 01:06 AM
Moto-Guzzi Moto-Guzzi is offline
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Originally Posted by BrokeDad View Post
I had to go back and redo my upscaled older Jenny as I've learned so much from all of you since I did it long ago. I found myself ashamed at all the flaws I needed to fix.

I'm still reading here a couple times a day technoid and it's looking like another another another great model from you.

Seriously.....that print is straight from Curtiss...air foil, incidence, dihedral, stagger...frecking goldmine!
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  #86  
Old 07-29-2017, 01:40 PM
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Another day another dollar, or in this case struts. Here's some renders for you. Let me know how they look? The side view matches the plan but the thickness I guessed on, are they okay. I also modeled a bracket for the top and bottom of the struts. They're 192 triangles but that's not much to add a bit of detail to the struts.

Ha.. the more work I do on the Jenny the less the top king post rigging bothers me. So now it's not a no it's a maybe. To me the plane looks better without it but it's such a defining feature of the Jenny it's hard for me to create a scale model of it and leave them off. Argh!
Attached Images
File Type: jpg Curtiss JN-4D Jenny 10.jpg (223.3 KB, 10 views)
File Type: jpg Curtiss JN-4D Jenny 11.jpg (279.4 KB, 10 views)
File Type: jpg Curtiss JN-4D Jenny 12.jpg (169.8 KB, 10 views)
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  #87  
Old 07-29-2017, 01:41 PM
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Here is a picture I found of a Jenny instrument panel:

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  #88  
Old 07-29-2017, 02:12 PM
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thats a good one too i have it and this one
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File Type: jpg Curtis jenny 04.jpg (245.6 KB, 11 views)
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  #89  
Old 07-29-2017, 02:22 PM
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I went back and made the struts 10 percent thicker. It's not a lot but it helped some. The strut on the right is the thicker one, how's it look to you?
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File Type: jpg Curtiss JN-4D Jenny 13.jpg (191.4 KB, 12 views)
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  #90  
Old 07-29-2017, 02:32 PM
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Thanks for the instrument panels I had one but not the other.
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