Embryo Streak (oz3430)

 

Embryo Streak (oz3430) by Florent Baecke - plan thumbnail

About this Plan

Embryo Streak. Rubber free flight model.

Direct submission to Outerzone. Photos are of maciej's own finished model.

Update 15/12/2021: Added CAD version of this plan, thanks to DaveLentz.

Quote: "Hi Steve, I've made a CAD version of the plan and would humbly like to contribute this to Outerzone. I like the design so much I put in the effort to fix the plan. I am still planning to build it. The important scaling dimension, if needed, is each wing panel should be 8.5" adding up to a 17" wingspan.
Other changes/additions I made to the original plan:
1) Thanks to maciej's photos, I added a few more details about the landing gear to fuselage attachment.
2) I made the nose block more generic, so almost any nose bearing/bushing arrangement could be used depending on what the individual builder might want to do!
Thanks, Dave Lentz"

CAD file

This plan is available for download in CAD format.

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Datafile:

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User comments

Hi, It is an invalid address.... ??? Friendly,
Olivier - 02/10/2021
I take it you mean the link in the Datafile to the Awaitik forum? Yes, that is now a dead link. At some point in the last 9 years, it died. This is not something that we need to do anything about. Here at Outerzone we are an archive. Link rot happens constantly and slowly, over time, as old sites die. There are many dead links here. But we are not in the business of policing or removing dead links. Apart from anything, dead links help inquisitive users to find useful info on, say, the Waybackmachine. So. That's where we are. If you simply want the plan, then use the Download Files section button. If you want to investigate the historical posting from the Datafile, then use the Waybackmachine, like this: http://web.archive.org/web/20160306191634...
SteveWMD - 02/10/2021
I'm starting back into rubber power models, and I noticed this plan. The photos show it to be a very sleek looking ship! And I'm definitely planning to build it! To print its plan out full size I'd have to go to the print center. Instead, after downloading it, I uploaded it into my CAD. I did some checks to see if this design met the Embryo Endurance AMA contest rules. I found that at quoted 18 in. WS, the wing area exceeded the 50 sq. in. requirement. I tried scaling first to 16 in. WS and then 17 in. WS. 17 in. WS was perfect. The wing area comes in at 49.3 sq. in. At that WS, the design also meets all the other rules for fuselage volume and stab max allowed area. I plan to build it at 17 in. WS and hope to send you pics! Thanks for all your work!
Dave Lentz - 05/12/2021
The original plan is fine. Each wing panel is ~8.5", and they join together on the centerline of the fuselage. The wing sits atop the "V" supports that are mounted at fuselage stations 3,4 and 5. There is no "centersection" per se, the wing panels form a simple "V" dihedral. Were you adding the fuselage width to the sum of the two panels to get a longer (incorrect) span?
D A - 16/12/2021
Steve/Mary Sorry to add this second comment--the model in the photo was built with a wing centersection, and not according to the plan. It is very misleading to show that image without a note to this effect.
D A - 16/12/2021
Ah, fair point. Does anyone have a nice photo of an un-modified model, that we can use for the main pic? Thanks.
SteveWMD - 16/12/2021
Have changed the wingspan listed here, from 18 to 17 in. Agreed, that makes sense. My mistake, I must have arrived at 18 by adding the fuse width.
SteveWMD - 16/12/2021
Have removed the photos of Maciej's model, at his request. That's a shame.
SteveWMD - 16/12/2021
It is indeed a great pity that the pics of Maciej's splendid model are lost to us. Many model pics show their builder's interpretations of the original, and OZ can hardly be expected to point out every variation.
JB - 16/12/2021
See https://www.youtube.com/watch?v=SihQbkzidVE Youtube link.
Olivier - 16/12/2021
I agree with JB.
RC Yeager - 16/12/2021
Wow, I just watched the above video! I would never be brave enough to fly that close to trees!
Awesome!
Dave Lentz - 20/12/2021
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* Credit field

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Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

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