Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > BARCLONE > Designer's Studio
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 03-10-2009, 04:02 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default Component Request...

As I mentioned in the post of the ST-11 Test Rocket, I said we could use a Tau style nose cone for this tube series. Well, here is my rendition of such a nose cone.

NAME: BC-1191TZ

Length: 9.1" (not counting the shoulder)
Maximum Diameter: 1.58"

Ogive Section: 7.89"
Center Section: 0.01" (Reference point for launch lugs in RockSim)
Transition Section: 1.20"

Shoulder Length: 0.875"

Weight: 0.83 oz
Attached Thumbnails
Click image for larger version

Name:  BC-1191TZ 2D.jpg
Views: 83
Size:  30.1 KB  Click image for larger version

Name:  BC-1191TZ 3D.jpg
Views: 73
Size:  54.2 KB  
Attached Files
File Type: rkt BC-1191TZ.rkt (12.3 KB, 76 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
Reply With Quote
  #2  
Old 03-10-2009, 04:39 PM
Carl@Semroc's Avatar
Carl@Semroc Carl@Semroc is offline
Junior ??? Rocketeer
 
Join Date: Mar 2005
Location: Knightdale, NC
Posts: 1,470
Default What other components do you need?

That is probably inside the range of our current machines. The deep flare hits the tool against the balsa on larger cones.

Good thread. I have been meaning to get some feedback on new balsa parts before finalizing a catalog. What are other nose cones, transitions, blocks, etc. that would be useful to have? This includes upscales, downscales, modifications to existing parts. Many of the plastic parts do not have a corresponding balsa equivalent because we do not have a good photo of all of them.

Beyond balsa, what other tubes, rings, fins, etc.?
__________________
Carl McLawhorn
NAR#4717 L2
semroc.com
Reply With Quote
  #3  
Old 03-10-2009, 05:41 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default

Carl,

We do need some upscales of various ogives, ellipticals and conicals. Just about anything which fits into the cutting machine's envelope would be usable.

I'm suggesting also that we think about some really odd-ball shapes to give ourselves some added flexibility. The cone described here is one such.

NAME: BC-1171SP

Length: 7.10" (without shoulder)

Forward Ogive: 4.70"
Maximum Diameter: 1.566" (Ping-Pong Ball diameter)
Sphere Length: 1.40"
Transition Section: 1.00"

Shoulder Length: 0.875"
Attached Thumbnails
Click image for larger version

Name:  BC-1171SP 3D.jpg
Views: 77
Size:  63.3 KB  Click image for larger version

Name:  BC-1171SP 2D.jpg
Views: 77
Size:  30.7 KB  
Attached Files
File Type: rkt BC-1171SP.rkt (16.0 KB, 75 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
Reply With Quote
  #4  
Old 03-10-2009, 11:40 PM
Tau Zero's Avatar
Tau Zero Tau Zero is offline
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,318
Thumbs up Jay pipes up...

Quote:
Originally Posted by Carl@Semroc
Good thread. I have been meaning to get some feedback on new balsa parts before finalizing a catalog. What are other nose cones, transitions, blocks, etc. that would be useful to have? This includes upscales, downscales, modifications to existing parts.
I keep using a BR-1013 reducer/transition in some of my more recent designs, but I end up stretching it out to 1.0" long, because 3/4" long Just Doesn't Look Right. (Sorry Carl, nothing personal.)


Quote:
Beyond balsa, what other tubes, rings, fins, etc.?

Chuter-2 1.48X upscale fins, 3/32" thick
. (Just the fins, I don't need the additional rectangular "fiddly bits".)


A bunch of other fin sets that I can't think of right now. OOH! How 'bout these?

Littler Hustler 0.44X
Aero-Dart 0.56X

Sky Devil "Bastille" 1.00X and 1.37X
Vector-V fins and vanes 1.37X
Tau Zero 1.37X (3/32" balsa without inner notch), 1.75X (1/8" basswood with TTW "bits")


Jim Pierson's designs:

Space Argosy
The Shredder


A few of my own I'm too lazy to cut out:
XPL Experimental
Prometheus (now *that's* lazy!)
Seeker P-S


Okay, that's all I can think of (*and* cross-reference!) right now. (Zzzz...)


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
Reply With Quote
  #5  
Old 03-11-2009, 11:23 AM
JRThro's Avatar
JRThro JRThro is offline
BAR Wannabee
 
Join Date: Mar 2005
Location: NW Houston, TX
Posts: 1,304
Send a message via MSN to JRThro Send a message via Yahoo to JRThro
Default !!

Quote:
Originally Posted by CenturiGuy
A few of my own I'm too lazy to cut out:
Prometheus (now *that's* lazy!)

Jay, I have a set of Prometheus fins, already papered and CA'ed, if you need them... No, wait a second, I need those to build the Prometheus!


I guess you'll have to ask Carl after all.
__________________
John Thro, NAR #84553 SR
I was too old when I started! Now I'll *never* become a BAR!
Reply With Quote
  #6  
Old 03-13-2009, 03:47 PM
Bill's Avatar
Bill Bill is offline
I do not like Facebook
 
Join Date: Sep 2008
Location: North Tejas
Posts: 3,087
Default

Quote:
Originally Posted by Carl@Semroc
Good thread. I have been meaning to get some feedback on new balsa parts before finalizing a catalog. What are other nose cones, transitions, blocks, etc. that would be useful to have? This includes upscales, downscales, modifications to existing parts. Many of the plastic parts do not have a corresponding balsa equivalent because we do not have a good photo of all of them.

Beyond balsa, what other tubes, rings, fins, etc.?



I am very partial to 1.67 upscaling because of the nice correlation between available tube sizes.

Tube sizes for upscale factor 1.67:


original tube upscale tube

BT-5 0.544" -> 0.908" T-.908" (ST-8)
BT-20 0.736" -> 1.229" T-52H (29mm motor mount tube)
ST-8 0.908" -> 1.516" T-40 Quest
BT-50 0.976" -> 1.630" BT-60
ST-10 1.040" -> 1.737" ???
BT-55 1.325" -> 2.213" BT-70
BT-56 1.346" -> 2.248" T-70H
BT-60 1.637" -> 2.734" Semroc LT-275?
ST-20 2.042" -> 3.410" ??? Estes Mercury Atlas size
BT-70 2.217" -> 3.702" BT-100

I do not know about your cone machine, but is it easy to set it up with a shape? For example, to tell it to make a BNC-50J sized to fit a T-60?

I am particularly interested in:

5V, 5E, 5S, 5W for ST-8
20B, 20N for T-52H or T-30 Quest
50J, 50X, 50Y for T-60
55AC for T-70

Also, centering rings in lite-ply for the various combinations of the upscaled tube sizes.


Bill
Reply With Quote
  #7  
Old 03-14-2009, 12:13 AM
James Pierson James Pierson is offline
Master Modeler
 
Join Date: Dec 2005
Location: Washington State
Posts: 654
Lightbulb Btc-70hz

When I first build the original Sky Champ Lander using the BTC-70 HZ I discovered that it was cored for an LT-115 (Cored at 1.22") tube and not the BT-55 (1.325") I had thought . A little inside sanding on my occilating spindle sander and the BT-55 fits quite nicely. Sure would be nice if the BTC-70 HZ solid balsa transition could be cored to fit an Bt-55 tube . Also would be nice if the BT-55EE (5.5") was available to complete this design.

James Pierson
NAR# 77907
Attached Thumbnails
Click image for larger version

Name:  Sky Champ Version 5  3D Image #1.jpg
Views: 82
Size:  11.8 KB  Click image for larger version

Name:  BTC-70 HZ  Core 1.jpg
Views: 66
Size:  9.2 KB  
Reply With Quote
  #8  
Old 03-14-2009, 01:01 AM
James Pierson James Pierson is offline
Master Modeler
 
Join Date: Dec 2005
Location: Washington State
Posts: 654
Lightbulb Proposed Parts

But wait there is more .

How about an upscale of the BC-523 that could be estimated as the BC-1035.

Would also like to see an shorter version of the BR-713 estimated as the BR-713S.

Just my 5 cents worth,........... I could keep this up for a while .

James Pierson
NAR# 77907
Attached Thumbnails
Click image for larger version

Name:  BR-713S.jpg
Views: 76
Size:  11.5 KB  Click image for larger version

Name:  BC-1035.jpg
Views: 71
Size:  14.1 KB  
Attached Files
File Type: rkt BR-713S.rkt (8.8 KB, 72 views)
File Type: rkt BC-1035.rkt (12.3 KB, 72 views)
Reply With Quote
  #9  
Old 03-14-2009, 10:04 PM
James Pierson James Pierson is offline
Master Modeler
 
Join Date: Dec 2005
Location: Washington State
Posts: 654
Lightbulb More Proposals

But wait there is more .

I would like to see a more scif- version of the BC-726CN and call it the BC-715CN??

How about an shortened BC-760 for an ST-10 called the BC-1036??

Craig did say Oddball so how about the BC-1040??

Down to two cent now , JP.

James Pierson
NAR#77907
Attached Thumbnails
Click image for larger version

Name:  BC-715CN.jpg
Views: 76
Size:  14.2 KB  Click image for larger version

Name:  BC-1036.jpg
Views: 65
Size:  11.6 KB  Click image for larger version

Name:  BC-1040.jpg
Views: 69
Size:  12.7 KB  
Attached Files
File Type: rkt BC-715CN.rkt (14.4 KB, 76 views)
File Type: rkt BC-1036.rkt (37.5 KB, 67 views)
File Type: rkt BC-1040.rkt (43.0 KB, 66 views)
Reply With Quote
  #10  
Old 03-15-2009, 08:28 AM
Carl@Semroc's Avatar
Carl@Semroc Carl@Semroc is offline
Junior ??? Rocketeer
 
Join Date: Mar 2005
Location: Knightdale, NC
Posts: 1,470
Default

Good stuff!
__________________
Carl McLawhorn
NAR#4717 L2
semroc.com
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 01:54 PM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2024