Here's a cheap-n-dirty quickie that I whipped out 2 new designs
I call TAU pi-X, or TAU pi-Y if you use 3 fins.

SEMROC Part list

Parts for TAU pi-X, -Y
4 BC 523 or 3 BC 523
4 BC 505 or 3 BC 505
1 BC 760

4 ST 530 or 3 ST 530
Use two ST 560 to make 4 ST 530 for TAU pi-X, use one ST 590 to make 3 ST 530 for TAU pi-Y

1 ST 745
1 BR 716
1 ST 1690
1 EM 716
2 SE 12
1 EC 124
1 SCK 24
FMB 34 fin stock

Tau Zero nose cone, makes this design look good?

Attached Thumbnails

         

Attached Files

	Tau PI-X.rkt (74.8 KB, 114 views)
	Tau PI-Y.rkt (68.3 KB, 115 views)

__________________
Andrew Scott

M.M.R.G. #00001 L1

N.A.R. #51647 L1

T.R.A. #10404 L1

e-bay. Proving PT Barnum was right

Hmm. Tau Pi. That's *dangerously* close to "Cowpie." But as a former farm boy, I can tell you cowpies are P.U., instead of P.I.


(big grin) That, and the variations on the body tubes, as well as the fin pods with nose cones.


Good job, Andrew! Nicely done!


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

Andrew,

Jay's Tau nose cone makes a lot of designs look good, even a few of mine...

Good work! This should also put us over the 300-plan target I was hoping BARCLONE might reach before December.

(For everyone...)

Now, with the addition of Andrew to our little asylum of loonies, maybe BARCLONE can reach 400 plans by next...September? Do I dare suggest 500 by next December? Could we reach either of those goals?

__________________
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

Loonie yes , 400 plans before this December.

I say go for it

__________________
Andrew Scott

M.M.R.G. #00001 L1

N.A.R. #51647 L1

T.R.A. #10404 L1

e-bay. Proving PT Barnum was right

Get 'er' Done Boys, JP

James Pierson
NAR# 77907

(holding head in hands) I think Craig's little slip about "asylum" may *not* have been a slip.

--What is this? I give you number 300, and you want *MORE?!?*


...I'm going back to my Mad Rocketeer's laboratory now, so it may *be* a while before you actually see anything new from me...


Cheers, and chuckling,

__________________
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

Hysterical Site, eh?

You've been looking at my OTHER website again, haven't you?

http://www.trainweb.org/bayshorehs

__________________
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

Nope. Just noticing the roadside markers along the highway while driving my news vehicle around.

Oddly enough, I couldn't come up with any pictures while searching for "historical site." But I just now tracked down the following one, which I've taken pictures of before (upper right corner):

http://www.evperry.com/minidoka.html


These waterfalls are just upstream (east) from where Evel Knievel "tried to do his thing" 32 years ago on Friday:

http://www.visitidaho.org/thingstod...ractionid=30839


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

With all of this EnerJet talk and the really cool designs they seem to be, I figured it was time to come up with a "poor boy's EnerJet". This version uses three 13mm A3-4T motors and puts in a respectable 438' altitude. The Dv is less than 15 FPS, and the launch guide length is less than 36", so we're not talking about major launch towers here. I just used 3/16" diameter lugs instead of 1/8" lugs...

Two pieces of SEMROC ST-1380 form the upper body with a BC-1344 nose cone. Three ST-5120 tubes form the motor cores. Fins are cut from 3/32" balsa. No motor hooks, just simple friction-fit with masking tape. Two 16" diameter parachutes bring the rocket back down safely.

Enjoy!

Attached Thumbnails

   

Attached Files

SmallJet 313.rkt (144.6 KB, 103 views)

__________________
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

Very cool Craig.. I gotta build one!

One idea, for motor retention you could epoxy a short length of say 1/8" threaded rod in the center of the cluster of motor tubes and then use a nut and washer to hold all three motors. That's what I did with my Astron Cobra cluster, but with 3/16" threaded rod. I can provide a photo if anyone is interested.

__________________
Quando Omni Flunkus Moritati