Here's what struck me after coming up with v.2 of the Roguish Lee, my upscale knockoff of the Estes Rogue, and after Craig's discussion of Solo's "use only Semroc parts" challenge.

Factor in the issue that I can't follow directions very well, and, uh...


I give you the "Phobos V" (pronounced "Five"), which uses Carl's laser-cut Aphelion fins, but since only three come in a set, you have to order 5 sets for 3 rockets.

.

Attached Thumbnails

     

Attached Files

Phobos_V.rkt (42.3 KB, 81 views)

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

I like it, Jay.

Have you tried it with an 18 mm motor mount?

__________________
John Thro, NAR #84553 SR
I was too old when I started! Now I'll *never* become a BAR!

Jay, I love it. Even though you didn't post it in my Challenge thread, I think it's a real contender.

__________________
NAR # 115523
Once upon a better day... SAM #0076
My site: http://rocketry.gonnerman.org

Chris, I'm glad you do!

I didn't post it in your Challenge thread because the CR-513 centering rings from Semroc don't exist.


--Yet.


Cheers,

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

Yeah, with that much stability margin with an A10-3T, I wonder about an 18mm motor - say B6-4?

Simple but different. I like it.

John and BEC,

Look at the deployment velocity on a 1/2A6-2! That's almost perfect!

--Not to mention some good performances on A, B, and C motors, too! And all that *with* a great big SE-14 screw eye, as well!

BEC, it looks like the 18mm stability margin is 1.40 calibers on a B6-4, and 1.25 on a C6-5.


Enjoy, everybody!

.

Attached Thumbnails

   

Attached Files

Phobos_V_18mm.rkt (69.1 KB, 78 views)

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

Um...

http://www.semroc.com/Store/scripts...p?idproduct=113

What do you call this?

__________________
NAR # 115523
Once upon a better day... SAM #0076
My site: http://rocketry.gonnerman.org

A valid excuse to place an order?

__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

BARs helping BARs

SAM 0044
AMA 352635

Chris,

Well, I* didn't* see them last night when I looked here:

http://www.semroc.com/Store/scripts...p?idCategory=87

Oops. There they are!


--Sorry, *what* was I saying? (covering my embarrassment) Oh, yeah, if you *want* to use the Phobos V in your Challenge project, go right ahead. Although with five fins, you might not want to use it as the first model that your students build.


Thanks, buddy!


Uh, yeah, what *he* said.



Cheers,

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

Hmmmm...... I have most all the bits except the fins on hand to make an 18mm version of this with BT-55 rather than ST-13 tubing, though the nose cone I have is not quite the same shape - BNC-55CT - a bezier curve shape. A BNC-55AA would be a closer match and would probably be better suited to the look, though.

Verrrrrrrry interesting, indeed....