Overpowered engines.

[darthgriffin]

I posed this question in the Propulsion section, but if you're like me you rarely browse outside your current skill set.

Has anyone stuffed one of Aerotech's 18mm D engines into a High Flyer or similar small rocket just to see what happens? I want to hear the story. Did you get it back in one piece?

[mcderek]

I watched a Quest Starhawk flight on an E25. It came back in one piece. Sweet flight!

[oddmanrockets]

how about a quest nike smoke on an at e-45 or a estes maniac on a at g-125 the g-125 left the fins at the pad LOL

[Sparkytfl]

It cant be much different than putting a C6-7 into something the size of a Wizard (half the weight of the high flyer). You'll be glad you used a streamer instead of a chute.

[chadrog]

It cant be much different than putting a C6-7 into something the size of a Wizard (half the weight of the high flyer). You'll be glad you used a streamer instead of a chute.

Are you maybe thinking of the High Flyer XL? The original High Flyer is smaller than the Wizard.

[Sparkytfl]

#2178 Hi-Flier, Diameter .74in, length 12in, weight 1.1oz
#1292 Wizard, .74, 12, .5
Those weight figures do seem a little off, I doubt the bigger fins make that much of a difference.

[Rocketbuilder]

I posed this question in the Propulsion section, but if you're like me you rarely browse outside your current skill set.

Has anyone stuffed one of Aerotech's 18mm D engines into a High Flyer or similar small rocket just to see what happens? I want to hear the story. Did you get it back in one piece?

I'd love to, but I can't bring myself to put one of those crazy things in one of my rockets. (And the engines are very expensive.)
Although, I did consider building an Estes Nova Payloader with some extra nose weight and flying it minimum diameter on Aerotech 24mm F motors. I decided not to though, as I'm too afraid of losing the RMS case.

[DJDeadParrot]

Although, I did consider building an Estes Nova Payloader with some extra nose weight and flying it minimum diameter on Aerotech 24mm F motors.

Many many moons ago, I built an Estes Sizzler without the motor mount, just to see what it would do on an Aerotech E15-10. A straight white smoke trail suddenly appeared in the sky with not a whole lot of noise. Never saw the streamer deploy, but someone found it later in the day.

[jd2cylman]

I launched my original Big Bertha (from the '70's) on a AT D21T a long time ago. Scooted right up into the sky! Awesome flight.

Adrian

[Marc_G]

Vagabond on E15. Gone.

Der Big Red (green) Max on E15: Got it back, just barely, under very light wind conditions (landed ~700 feet away).

Photon Disruptor on D21: Awesome flight, but ejection broke the shock cord, core sample of main rocket, destroyed.

Marc

[GDJ]

I launched my original Big Bertha (from the '70's) on a AT D21T a long time ago. Scooted right up into the sky! Awesome flight.

Adrian

Yeah! I'm trying that!

[dcastle]

I posed this question in the Propulsion section, but if you're like me you rarely browse outside your current skill set.

Has anyone stuffed one of Aerotech's 18mm D engines into a High Flyer or similar small rocket just to see what happens? I want to hear the story. Did you get it back in one piece?

Yes, slightly beefed up Estes Wizard on a D21. Rocksim says transonic in less than 1/2 a second ... It held together too but all I saw was the sparkle of a mylar streamer way up in the sky...

[Initiator001]

I used an AeroTech D21 motor to exceed Mach 1 (Just barely).

This was in the days before there were all these fancy on-board electronic devices.

See ths thread form the archives: http://www.rocketryforumarchive.com/...t=scott+pearce

Post # 17.

[karlbaum]

I built a special 24mm minimum diameter Estes Alpha. I stuffed a CTI F240 Vmax in it and it disappeared in a blink. That was a cool flight.

[Marc_G]

Jim Flis mentioned to me on my Praetor thread that a D21 can strip the fins off a stock Praetor, since the fins are so long and draggy. Been meaning to try in on my beefed up TTW fin Praetor...

[jimzcatz]

SWAT on a D21 and E25....back in the day when they were half way affordable.

[HammerZ2008]

#2178 Hi-Flier, Diameter .74in, length 12in, weight 1.1oz
#1292 Wizard, .74, 12, .5
Those weight figures do seem a little off, I doubt the bigger fins make that much of a difference.

The metal motor hook may add a good half oz, and at the tail end at that. That isn't figured into the overall length, the Wizard's fins stand it off the table.

I can't see any motor tearing fins off of a Hi Flyer with that much of a root edge, and the fins are basicly nothing more than tabs on the tube.

[Blakkzakk]

Did you get it back in one piece?

It will usually come back in one piece. Finding it......'nother story.

[MarkII]

It will usually come back in one piece. Finding it......'nother story.

That's exactly it. The issue isn't whether a small rocket will survive a launch on a big motor (at least not most of the time), but whether you'll ever find the darned thing again. I have lost rockets on much less dramatic power-ups than those that have been described so far. I am truly astonished whenever I read that anyone actually succeeded in retrieving the rocket after making such an extreme flight.

[chadrog]

That's exactly it. The issue isn't whether a small rocket will survive a launch on a big motor (at least not most of the time), but whether you'll ever find the darned thing again. I have lost rockets on much less dramatic power-ups than those that have been described so far. I am truly astonished whenever I read that anyone actually succeeded in retrieving the rocket after making such an extreme flight.

Using noisy Mylar streamers and employing as many ears as possible will greatly increase your chances of a successful recovery.

[MarkII]

Using noisy Mylar streamers and employing as many ears as possible will greatly increase your chances of a successful recovery.

What?? Can you repeat that?

In space no one can hear your streamer crinkling. Or even when it's at 2000 feet AGL.

What constitutes a "noisy" Mylar streamer, anyway? They don't make much sound after deployment from what I have ever witnessed.

[boomtube]

I have a Sunward kit called the “Flechette”; to which I added a long tapering nosecone from Semroc.

I routinely launch it using the 18mm D24.

I call this rocket “Teleport” for the way it leaves the pad.

[chadrog]

What?? Can you repeat that?

In space no one can hear your streamer crinkling. Or even when it's at 2000 feet AGL.

What constitutes a "noisy" Mylar streamer, anyway? They don't make much sound after deployment from what I have ever witnessed.

There are different varieties - you must check the ingredients list of your particular Mylar to make sure "noise" has been added.