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Semroc - Hydra VII (KB-7)

Attributes

Center Of Pressure:		28.8600 inches from front (Rocksim/Rocksim)
Designer:		Carl McLawhorn
Manufacturer:		Semroc
Model:		KB-7
Recovery:		Parachute
Status:		In-Production
Style:		Cluster

Reviews

• Semroc - Hydra VII (KB-7) By Nick Esselman (August 9, 2008)
• Semroc - Hydra VII (KB-7) By Frank G. Whitby (September 28, 2004)
• Semroc - Hydra VII (KB-7) By David Hash (April 16, 2004)

Rocket Gallery

• Edward Chess's Hydra VII
• Chan Stevens's Semroc Hydra VII
• EMRR's Semroc Hydra VII
• Donald Besaw's Semroc Hydra VII
• Dale Marshall's Semroc Hydra VII
• Greg Rapp's Semroc Hydra VII
• Gary Goldenbaum's Semroc Hydra VII
• Paul Kinzer's Semroc Hydra VII
• Daniel Griswold's Semroc Hydra VII
• Dave Goodwin's Semroc Hydra VII

Rocksim Design Files

• Semroc Hydra VII

Related Videos

Semroc "Hydra VII" Maiden Flight

- Launched on only one engine (C6-3) because I didn't have enough power to light more! Didn't go up...

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Semroc Hydra VII Big 7 Motor Cluster Rocket Kit KV-29
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$53.00 End Date: Wednesday Jun-20-2012 18:32:47 PDT Buy It Now for only: $53.00 Buy It Now | Add to watch list

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Flight Log

Date	Rocket Name	Motor(s)	Altitude	Notes
2004-06-20	Gary Goldenbaum's Semroc Hydra VII	7xC6-7	1131 feet	Carried Adept Alt05.5 oz read only altimeter
2004-09-10	Daniel Griswold's Semroc Hydra VII	C6-7	-	Only two motors lit. No ejection charge. Medium fin damage.
2005-08-13	Daniel Griswold's Semroc Hydra VII	7xC6-7	-	Used flash-pan ignition. Only lit 3 of 7 motors. Lower thrust led to late ejection. Shock cord...
2005-08-13	Daniel Griswold's Semroc Hydra VII	7xC6-7	-	Used flash-pan ignition. All seven motors lit. Tied Nose Cose to Rocket. One Piece recovery
2005-09-11	Daniel Griswold's Semroc Hydra VII	7xC6-7	-	Only one parachute opened. Fin broke at fillet. Easily repairable.
2006-02-06	Donald Besaw's Semroc Hydra VII	C6-3	-	First flight, one C6-3 is not enough power for this rocket, arched almost immediately and the late...
2006-02-10	Donald Besaw's Semroc Hydra VII	3XC6-5	-	Awesome flight, all three motors lit with no problems. Arrow straight boost to maybe 800 feet....
2006-04-16	Donald Besaw's Semroc Hydra VII	4XC6-5	-	Most excellent flight, all 4 motors lit perfectly. Very nice boost to maybe 1,000 feet. Recovered...
2006-04-22	Chan Stevens's Semroc Hydra VII	3XC6-5	-	Lit all 3.
2006-07-05	Donald Besaw's Semroc Hydra VII	4XB6-4	-	Great flight, all 4 motors lit with no problems, reached maybe 600-700 feet, not too bad for 4 B...
2006-08-05	Paul Kinzer's Semroc Hydra VII	3xB6-4+4xB6-0	-	All 7 lit, great flight, ~800 ft
2007-01-02	Donald Besaw's Semroc Hydra VII	4XC6-7	-	My first flight of 2007, yeah!!! Great flight, all motors lit, nice boost to maybe 1,000 feet....
2008-08-01	EMRR's Semroc Hydra VII	1XC6-7+6XC6-0	-	First flight after how many years? Well, it was a great lift-off but sorry to say I lost the...
2008-08-09	Paul Kinzer's Semroc Hydra VII	4xC6-0+3xA8-5	-	A great combo of motors, longer burn time of the C6 boosters, but keeping the altitude around 1000...
2009-07-22	Donald Besaw's Semroc Hydra VII	5XC6-7	-	Awesome flight, lit all 5 motors instantly. Nice straight boost to maybe 1,100 feet or so....
2009-12-19	Dave Goodwin's Semroc Hydra VII	3xC6-7	-	Maiden flight, so clustered only 3 engines. Center and 1 outboard ignited, which led to a nice...
2010-04-09	Dale Marshall's Semroc Hydra VII	3xB6-0C6-3	-	This is one of my favorites. Unfortunately I didn't get the friction-fit engines in there good...
2010-04-10	Dale Marshall's Semroc Hydra VII	3xB6-0C6-3	300 feet	The launch was kinda weird this time, and the parachutes didn't deploy. The rocket lawn-darted...
2010-10-10	Dale Marshall's Semroc Hydra VII	B6-0/2xC6-3	-	This is another great rocket from Semroc. Unfortunately this one had a bad day. Straight boost...
2010-10-17	Greg Rapp's Semroc Hydra VII	3xC6-3	-	Great flight, all motors lit and it flew straight and true all the way up - and all the way down....
2011-06-11	Edward Chess's Hydra VII	3XC6-5	-	Good boost, chutes at apogee, no damage. 3XC6-5 is a good cluster size and delay for small field.

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