High Power Rocketry - Page 2 - XDTalk Forums - Your HS2000/SA-XD Information Source!

**Straight-Shooter** · 03-02-2008, 10:52 AM

The Loki J528 motor is about $50.00

The motors up in the M and the N range are about $300.00 a shot. The reason I stay in the slightly smaller class.

KarolinaKid · 03-02-2008, 12:02 PM

Cool Vid!

**Cannibul** · 03-02-2008, 08:58 PM

Ok. I watched this video a couple of times. Does that rocket make a sonic boom?

You say 4000 feet. In less than one second. From a standing start. So that sucker is really hauling.

Hutch4KSU · 03-02-2008, 09:17 PM

Man does that bring back memories! I built and flew many Estes rockets like the goblin, martian lander, saturn V, and a few multi-stage...I miss those days. Does anyone watch Master Blasters?
Estes had the solid fuel engines and I was trying to think of the other company that sold the liquid fuel engines.

**Straight-Shooter** · 03-03-2008, 03:44 AM

Quote:

Originally Posted by Cannibul

Ok. I watched this video a couple of times. Does that rocket make a sonic boom?

You say 4000 feet. In less than one second. From a standing start. So that sucker is really hauling.

Watch the video again. It takes 9 seconds to reach apogee from the ground. There definitely are some rockets in the club that surpass speed of sound. The reason members use fiberglass and carbon fiber for construction.

**Cannibul** · 03-03-2008, 05:19 AM

You got me there. It is 9 seconds. And my math skills sucked last evening. Tired as hell.

But 4000 feet in 9 seconds is awesome. That thing moves like a scalded cat.

**Straight-Shooter** · 03-04-2008, 04:14 AM

It wasn't by design but on this particular rocket the fins were slightly warped when it was still in kit form. I done my best to steam them straight but upon the first flight we all could here a loud whistle during ascent. It actually sounds really cool. In the video it sounds more like a screaming sound but awesome all the same.

03-02-2008, 12:02 PM	#12
KarolinaKid XDTalk 1K Member Join Date: Nov 2006 Location: TN (In my mind I'm goin' to Carolina...) Posts: 1,151	Cool Vid! __________________ The power of accurate observation is commonly called cynicism by those who have not got it. - Sir George Bernard Shaw

03-02-2008, 08:58 PM	#13
Cannibul XDTalk 2K Member Join Date: Oct 2007 Location: Moscow on the Willamette Posts: 2,123	Ok. I watched this video a couple of times. Does that rocket make a sonic boom? You say 4000 feet. In less than one second. From a standing start. So that sucker is really hauling. __________________ Semper Fi Can't quote the "out of touch guy" any more! I don't own any guns. Guns are evil. KEVWYO - Please reply to this thread http://www.xdtalk.com/forums/politic...-anti-gun.html

03-02-2008, 09:17 PM	#14
Hutch4KSU XDTalk 500 Member Join Date: May 2006 Location: Hutchinson, Kansas Posts: 516	Man does that bring back memories! I built and flew many Estes rockets like the goblin, martian lander, saturn V, and a few multi-stage...I miss those days. Does anyone watch Master Blasters? Estes had the solid fuel engines and I was trying to think of the other company that sold the liquid fuel engines. __________________ NOBAMA!! KEEP THE CHANGE Black XD 45ACP Service Bi-tone XD9 SC Ruger Standard .22 LR Ruger Super Redhawk Alaskan .454 Casull/.45 Long Colt 2 1/2 barrel (say hello to my lil' friend!) AR15 Finished! Last edited by Hutch4KSU; 03-02-2008 at 09:19 PM.

03-03-2008, 05:19 AM	#16
Cannibul XDTalk 2K Member Join Date: Oct 2007 Location: Moscow on the Willamette Posts: 2,123	You got me there. It is 9 seconds. And my math skills sucked last evening. Tired as hell. But 4000 feet in 9 seconds is awesome. That thing moves like a scalded cat. __________________ Semper Fi Can't quote the "out of touch guy" any more! I don't own any guns. Guns are evil. KEVWYO - Please reply to this thread http://www.xdtalk.com/forums/politic...-anti-gun.html

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03-02-2008, 10:52 AM	#11
Straight-Shooter XDTalk 500 Member Join Date: May 2006 Location: South Bend, Indiana Posts: 787	The Loki J528 motor is about $50.00 The motors up in the M and the N range are about $300.00 a shot. The reason I stay in the slightly smaller class.

03-04-2008, 04:14 AM	#17
Straight-Shooter XDTalk 500 Member Join Date: May 2006 Location: South Bend, Indiana Posts: 787	It wasn't by design but on this particular rocket the fins were slightly warped when it was still in kit form. I done my best to steam them straight but upon the first flight we all could here a loud whistle during ascent. It actually sounds really cool. In the video it sounds more like a screaming sound but awesome all the same.