Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > The Golden Age of Model Rocketry > Model Rocket History
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 07-24-2021, 05:43 AM
5x7's Avatar
5x7 5x7 is offline
Sometimes collector
 
Join Date: May 2008
Posts: 1,786
Default Looking for Information on Estes 631-PNC-40H from 1963 Estes Catalog

I have a rubber (possibly vinyl) bt-40 nosecone part no. 631-PNC-40H listed in the 1963 Estes Catalog, it may be from model missiles, see nosecone F here: Ninfinger 63Estes Nosecones.

I noticed Gus had one in this post:https://www.oldrocketforum.com/show...058&postcount=5

I think Estes bought out the remaining items from Model Missiles thus the BT-40 nosecones. As far as I know MM never made a rocket for this one so it is a mystery. There is a little slip of paper rolled up inside with directions about how to make a shockcord mount by punching holes in the shoulder and looping a string through. Does anyone have any additional information?
Reply With Quote
  #2  
Old 07-24-2021, 10:06 AM
stefanj stefanj is offline
Master Modeler
 
Join Date: Mar 2005
Location: Hillsboro, OR
Posts: 2,847
Default

Interesting!

And "E" appears to be a familiar firework cone.

Could the 40H have been another firework cone?
__________________
NAR #27085 - Oregon Rocketry - SAM
Reply With Quote
  #3  
Old 07-24-2021, 10:58 AM
Earl's Avatar
Earl Earl is offline
Apollo Nut
 
Join Date: Dec 2006
Posts: 4,893
Default

Quote:
Originally Posted by 5x7
I have a rubber (possibly vinyl) bt-40 nosecone part no. 631-PNC-40H listed in the 1963 Estes Catalog, it may be from model missiles, see nosecone F here: Ninfinger 63Estes Nosecones.

I noticed Gus had one in this post:https://www.oldrocketforum.com/show...058&postcount=5

I think Estes bought out the remaining items from Model Missiles thus the BT-40 nosecones. As far as I know MM never made a rocket for this one so it is a mystery. There is a little slip of paper rolled up inside with directions about how to make a shockcord mount by punching holes in the shoulder and looping a string through. Does anyone have any additional information?


I got several of those orange rubber cones (and some of the longer, pointy MMI cones) in a recent auction. Like you say, each of the orange rubber cones has a little slip of paper inside it.

I knew each of these two cones were in the early Estes catalogs and also knew the longer, pointy vinyl cone was originally a MMI cone, but this shorter 'rubber' cone I do not know the genesis of. Would like to know additional background myself.

Earl
__________________
Earl L. Cagle, Jr.
NAR# 29523
TRA# 962
SAM# 73
Owner/Producer
Point 39 Productions

Rocket-Brained Since 1970
Reply With Quote
  #4  
Old 07-24-2021, 11:44 AM
jdbectec jdbectec is offline
the middle-aged rocketeer
 
Join Date: Sep 2006
Location: Urbana, Illinois.....the birthplace of HAL
Posts: 468
Default

I believe those nose comes and the plastic spin fin units originally came from Central Rocket Company. At one time I had a copy of ad for a kit that used both,but, I can't seem to be able to find it. The paper contains instructions for attaching a piece of thread to form a loop.
__________________
Jeffrey Deem
NAR16741
CIA section 527
Reply With Quote
  #5  
Old 07-24-2021, 12:52 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Nunya Bizznuss, Michigan
Posts: 13,443
Default

I remember the BT-40 was the Estes Engine mailing tube and that the NC-40 cones fit those so you could make rockets from those tubes using commercial parts.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
Reply With Quote
  #6  
Old 07-24-2021, 01:22 PM
SEL's Avatar
SEL SEL is offline
Officially Middle-Aged Rocketeer
 
Join Date: Mar 2005
Location: Portland, OR
Posts: 1,356
Default

Quote:
Originally Posted by jdbectec
I believe those nose comes and the plastic spin fin units originally came from Central Rocket Company. At one time I had a copy of ad for a kit that used both,but, I can't seem to be able to find it. The paper contains instructions for attaching a piece of thread to form a loop.



Here you go ( Edited to add second ad ):
Attached Thumbnails
Click image for larger version

Name:  centralrocket.jpg
Views: 72
Size:  400.1 KB  Click image for larger version

Name:  central.jpg
Views: 50
Size:  271.1 KB  
__________________
SAM #0031

Last edited by SEL : 07-24-2021 at 03:41 PM.
Reply With Quote
  #7  
Old 07-24-2021, 03:18 PM
mojo1986's Avatar
mojo1986 mojo1986 is offline
Old Canuck Modeller
 
Join Date: Mar 2005
Location: Kingston, CANADA
Posts: 2,160
Default

Wow! I didn't know that Rock-A-Chute motors came in 'C' size!
Reply With Quote
  #8  
Old 07-24-2021, 04:32 PM
5x7's Avatar
5x7 5x7 is offline
Sometimes collector
 
Join Date: May 2008
Posts: 1,786
Default

Awesome, thank you!
Reply With Quote
  #9  
Old 07-24-2021, 05:00 PM
Royatl's Avatar
Royatl Royatl is offline
SPEV/Orion wrangler
 
Join Date: Mar 2005
Location: Atlanta, GA
Posts: 2,645
Default

Quote:
Originally Posted by mojo1986
Wow! I didn't know that Rock-A-Chute motors came in 'C' size!


I think they meant the "new" B size as at that time, the B was only 50% more power than A . They did make a C motor by '64, but it was a booster only, because of the small bore of the casings of the time. It put out only about 6 ns. They could only put a delay and ejection charge in them once they built the second generation Mabels that used the 1/2" bore casings.

The A motors of the time were about 10-20% more powerful than our A's. The B's were a bit punchier too. The NAR power categories were adjusted once the metric system was adopted in 1968.
__________________
Roy
nar12605
Reply With Quote
  #10  
Old 07-24-2021, 05:02 PM
5x7's Avatar
5x7 5x7 is offline
Sometimes collector
 
Join Date: May 2008
Posts: 1,786
Default

I wonder where I can get one of those spin units...
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 02:14 PM.


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