Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Semroc > Semroc Builders Resource
User Name
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 04-28-2023, 06:00 PM
5x7's Avatar
5x7 5x7 is offline
Sometimes collector
Join Date: May 2008
Posts: 1,769
Default Hydra VII

Title: Hydra VII

Kit number: KV-29

Background Information brief:The Semroc Hydra VIITM was designed in 1969 as the seventh Semroc Kit. Designed to be a high performance large cluster payload rocket, the Hydra VIITM was the most complex kit Semroc introduced. Named after a multi-headed monster in Greek mythology, the Hydra was a monster of a rocket with seven C engines! Construction was much more challenging than most other model rockets of the time. Igniting all seven engines was a major accomplishment, but rewarding flights were still possible. In small fields, a singe C engine provided a great low altitude demonstration flight. The Hydra VIITM was stock number KB-7 and retailed for $5.98 when it was first introduced.
The Retro-ReproTM Hydra VIITM is updated by using laser-cut balsa fins and a Kevlar® shock cord attachment. The original paper augmenter shroud has been replaced by a much sturdier spiral tube. The original balsa nose cones and body tubes are still used. The original two 12” parachutes have been increased to three to give more options for different flight profiles.

Designer: Carl McLawhorn

Release Date: 01/02/2004

In Production: 2004-2014

Instruction PDF

Requested attachments:

Fin patterns (200 dpi grayscale PDF)

Decal scan (600 dpi color PDF)
Attached Thumbnails
Click image for larger version

Name:  D8C2533C-958F-48FE-99EC-58A6017D20EE.jpeg
Views: 3
Size:  44.9 KB  
Attached Files
File Type: rkt Semroc-Hydra VII.rkt (92.1 KB, 0 views)

Last edited by Ltvscout : 05-03-2023 at 04:56 PM.
Reply With Quote
Old 04-28-2023, 06:01 PM
5x7's Avatar
5x7 5x7 is offline
Sometimes collector
Join Date: May 2008
Posts: 1,769

Reply With Quote
Old 04-28-2023, 06:02 PM
5x7's Avatar
5x7 5x7 is offline
Sometimes collector
Join Date: May 2008
Posts: 1,769

Reply With Quote
Old 05-03-2023, 04:48 PM
Ltvscout's Avatar
Ltvscout Ltvscout is offline
Ye Olde Rocket Shoppe
Join Date: Jun 2004
Location: Milwaukee, WI
Posts: 6,395

The instruction PDF has been added to the original post.
Scott D. Hansen
Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe!
Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies!
Ye Olde Rocket Forum
WOOSH NAR Section #558
Reply With Quote

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 03:39 AM.

Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2023