Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Weather-Cocked > FreeForAll
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 08-13-2015, 11:38 AM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
 
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
Default Claremont Rocket Society (CA 1965-92)

The Claremont Rocket Society was formed as a sponsored entity by the City of Claremont Parks and Recreation Department (now Human Services). One of the interesting facts about the club is it held weekly launches with about 20-50 participants over the course of many years. It had a dedicated building at 10th and Yale in Claremont. I am attaching a photograph of the sign from the roof of that building.

In approximately 1969 I was assisting participants with installing motors into their model rockets with club supplied motors. The launch field is a multiple baseball field just to the north of Claremont High School called Cahuilla Park, operated by the City of Claremont. It is named after the local historical Native Indian tribe. We were open to all races and genders and the fact that needs to be said is notable.

As a club 4-5 of us did regular rocket demonstrations at all the schools in the city and most in nearby cities. We did demos at High School football halftimes. We were a major outreach machine. This image is a Tall Tail 10 with a D12-3. It only went about 200 feet or less. It always recovered reliably and gracefully to big cheers! The kids (audience) love to help with the countdown!

In the back yard of the CRS HQ we had a basketball court. It was our static test facility. Here is an image of the test stand in use. It used a BBQ motor to slowly turn a large coffee can with the data paper taped to the outside. The motor is placed on a swing arm with a calibrated spring. When the can rotates to fresh paper we fired the test and got great data every time from the pencil directly writing on it. The spring had a maximum range of about 30 Newtons. Analog.

Historical Jerry
Attached Thumbnails
Click image for larger version

Name:  CRS HQ sign.jpg
Views: 205
Size:  320.9 KB  Click image for larger version

Name:  CRS motor help.jpg
Views: 183
Size:  262.2 KB  Click image for larger version

Name:  CRS school demo.png
Views: 137
Size:  1.05 MB  Click image for larger version

Name:  CRS TT10 recovery.jpg
Views: 99
Size:  112.8 KB  Click image for larger version

Name:  CRS test stand.jpg
Views: 159
Size:  214.0 KB  

Last edited by Jerry Irvine : 08-13-2015 at 01:24 PM.
Reply With Quote
  #2  
Old 08-13-2015, 12:38 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
 
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
Default The first G motors in California

The first "consumer grade" G motors in California were generally considered to be the Enerjet G76. These 29mm motors with filament fiberglass case, graphite nozzle and bulkhead, retained with epoxy, and filled with Flexane based APCP, used a design licensed from Irv Wait of Rocket Development Corporation.

The first known G motors in CA were sold by Iron Horse Hobbies in Tustin, CA (Kerry Hoffman) who serviced the Anaheim Model Rocket club whose members included kids Gary Rosenfield and Dave Griffith.

I had the opportunity to go and see the Enerjet motors only two of which were certified for use in CA at the time the E24 and the F52. To obtain an F67 one had to drive to Arizona, which Kerry did and had inventory at his store in the "back room". He even had a sample of a "unicorn motor", the rumored and stealthy Enerjet G76! So off to Arizona I dragged my poor parents in the guise of a family vacation! That's where I purchased my first Enerjet 2250 and 2650 kits as well as a few F67's and of course, G76's, directly from Lee Piester!

This is a report of the first ever published flight of an Enerjet G76 in California. Probably not the very first flight, but close. First published August 13, 2015.

The rocket I built for this "powerful" motor was a 2.25" thick wall tube 4FNC rocket with a 29mm mount. The rocket was prepped as normal and the G76 installed using the Larry Brown at Enerjet recommended tape thrust ring on the rear of the motor and a layer of tape to retain the motor in the rocket. This technique allowed any length Enerjet motor, E, F or G to be used without spacers.

The attached images show Jerry Irvine with the 2.25" (Nike-payload) Enerjet G76 powered "educational" rocket.

Walking the rocket to the pad with Best Friend Dave Goldberg looking on with his traditional yellow hard hat with NAR logo attached. Dave works at Disney now.

Best Friend Eric Ferm assists with putting the rocket on the pad with larger than normal launch rod and wide wood base. He has an orange hard hat denoting RSO. Eric works at IBM now.

Launch! of the first recorded G motor launch in California with launch control officer in clear view. Note the lack of smoke.

Recovery of the rocket in good condition with a happy rocketeer.

Removal of the motor shows the typical label free Enerjet G76 motor in great condition.

Approximately 1970.

Name Dropper Jerry

Current production version:
http://v-serv.com/usr/kits/banshee.htm
Attached Thumbnails
Click image for larger version

Name:  CRS G76 6 copy.jpg
Views: 140
Size:  541.0 KB  Click image for larger version

Name:  CRS G76 5 copy.jpg
Views: 148
Size:  342.7 KB  Click image for larger version

Name:  CRS G76 4 copy.jpg
Views: 113
Size:  177.2 KB  Click image for larger version

Name:  CRS G76 3 copy.jpg
Views: 146
Size:  573.7 KB  Click image for larger version

Name:  CRS G76 2 copy.jpg
Views: 145
Size:  173.4 KB  

Last edited by Jerry Irvine : 08-13-2015 at 02:56 PM.
Reply With Quote
  #3  
Old 08-13-2015, 04:42 PM
dlazarus6660's Avatar
dlazarus6660 dlazarus6660 is offline
Master Modeler
 
Join Date: Oct 2009
Location: Southern N.H.
Posts: 4,333
Default

Now that's the kinda stuff I like to read about. 45 years ago.
__________________
If it flies, I can crash it!
Reply With Quote
  #4  
Old 08-13-2015, 05:18 PM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
Default

I can't get enough of this kind of stuff, Jerry. I love reading old Model Rocketeer mags from the 70's along with posts like this. Keep posting and maybe even pull in some of your old club members to add more to the thread!

BTW, those photos have held up extremely well. Most color that age has considerable fade. The developer did a good job washing and fixing. Storage was probably easy in your low humidity climate.
__________________
I love sanding.
Reply With Quote
  #5  
Old 08-13-2015, 05:37 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
 
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
Default

Correct. Actual old skewl. Literally. I have to post before I am dead!

Here is 1970 ish.

Last edited by Jerry Irvine : 08-13-2015 at 07:23 PM.
Reply With Quote
  #6  
Old 08-13-2015, 06:50 PM
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
 
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 8,596
Default

These are awesome!
__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Gee'Hod, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Multi-Roc, Solar Sailer II Semroc - Earmark, Snake Jumper
Reply With Quote
  #7  
Old 08-13-2015, 07:09 PM
snaquin snaquin is offline
The_Ripper
 
Join Date: Jun 2005
Location: Louisiana
Posts: 1,941
Default

Wow, Jerry ... Awesome post and pictures! Love that low smoke shot of the boost, so cool.

I never had the opportunity to fly any EnerJet motors.



Thanks for documenting this here.



(I think your Banshee link is broken)
__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate
🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim
🚀 Stay Tuned For Fall 2021 Launch Dates
Reply With Quote
  #8  
Old 08-13-2015, 07:24 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
 
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
Default

Quote:
Originally Posted by snaquin


(I think your Banshee link is broken)
Work at buying a Banshee and a Sonic 3100.
Reply With Quote
  #9  
Old 08-13-2015, 08:39 PM
snaquin snaquin is offline
The_Ripper
 
Join Date: Jun 2005
Location: Louisiana
Posts: 1,941
Default

So about ten years before "Who flew the G?", looks like you flew the G76

..... and came back with a big smile on your face!

__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate
🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim
🚀 Stay Tuned For Fall 2021 Launch Dates
Reply With Quote
  #10  
Old 08-13-2015, 08:41 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
 
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
Default

Satellite 62 SL dude.

In the rocket club room. At the launch fields with friends. Getting ready for launch.

Jerry
Attached Thumbnails
Click image for larger version

Name:  CRS satellite 1.jpg
Views: 120
Size:  316.4 KB  Click image for larger version

Name:  CRS satellite 2.png
Views: 242
Size:  1.12 MB  Click image for larger version

Name:  CRS satellite 3.png
Views: 91
Size:  1.23 MB  Click image for larger version

Name:  CRS satellite 4.jpg
Views: 117
Size:  114.6 KB  
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 12:57 PM.


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