What did you do rocket wise today?

shop deals on amazon
eggtimer rocketry
Onebadhawk
SilicdyneTRF
The Rocketry Forum

Help Support The Rocketry Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Got this one ready for decals:

20190214_172846_zpsw1r1phvc.jpg
giphy890962418602984271_zps6trzwtui.gif
giphy5884727556423907230_zps6nte5t09.gif
 
Flyfalcons said:
Centering ring work on the Polecat BBII. Very clever setup.
Click to expand...

That will be a fun one to watch! When do you plan to fly it? FITS? Sod Blaster? Either way, I'm looking forward to seeing that bird fly!

I decided it was time to replace the nylon harnesses on my ARCAS and Aerobee, and ordered new kevlar replacements from OneBadHawk.
 
Worked on the Estes Mercury Atlas. Applying the chrome strips are even more difficult than I thought they’d be. Baby steps.image.jpg
 
Hoping for FITS for the BBII. I have a friend coming over from the east coast and I want to show him a real L2 flight, not some candy ass 54mm K2050 flight.
 
Cl(VII) said:
I love it when a plan comes together...View attachment 374620
Click to expand...
Nytrunner said:
I'll still vote for marketing that: Tracker Carousel, fits x/y/z tracker! (must use ab123 Lipo)
Click to expand...
CI(VII): [Is that "101(7)"? April 11, 2007?]

With the CAD software you're using, how hard would it be to divide this into four pieces? One is the core with battery slots, and it's OK if the slots only fit a narrow range of battery choices. Then a piece for each electronics face. The printable piece is made by slapping together the core and up to three faces, with the core-to-face interface standardized.

If all that can be done without too much difficulty, then you could have a library faces for lots of different electronics modules and print off custom combinations to order.
 
jqavins said:
CI(VII): [Is that "101(7)"? April 11, 2007?]

With the CAD software you're using, how hard would it be to divide this into four pieces? One is the core with battery slots, and it's OK if the slots only fit a narrow range of battery choices. Then a piece for each electronics face. The printable piece is made by slapping together the core and up to three faces, with the core-to-face interface standardized.

If all that can be done without too much difficulty, then you could have a library faces for lots of different electronics modules and print off custom combinations to order.
Click to expand...

That is a really good suggestion, thanks. It would not be immediately straight forward, but it should be possible to use the concept. To make it modular it would need to be a little bigger, but probably only a few mm in each direction, and there is plenty to spare in a 3" nosecone.

Cl(VII) is the oxidation state of chlorine atom in ammonium perchlorate. I'm a chemist, hence the name "Lab Rat".
 
Ah. Capital I (eye) being indistuingishable from lower case l (ell) in my browser screen, I never would have guessed. I'm, while not a chemist, something of a chemistry buff, and probably would have got it if only the forum were displayed in a serifed font.
 
Decals applied to my son's and daughter's Generic E2Xs, and my Crossfire ISX. Custom- cut decals are white opal and chrome, provided by Household 6.

Hard to tell in these pics, but the glitter paint under the clear absolutely pops. It looks like a carnival ride. The only one that doesn't sparkle much is the Crossfire, and only on the body tube. Even so, in the right light, it absolutely explodes with metal flake candy paint goodness.

Final clear coats tomorrow, nosecone tension tuning, attaching chutes, and we'll be flying on Monday.

20190215_215005_zpswxjffylk.jpg

20190215_214928_zpstuzgvdz2.jpg

20190215_214840_zps0wp7kznc.jpg
 
jqavins said:
CI(VII): [Is that "101(7)"? April 11, 2007?]

With the CAD software you're using, how hard would it be to divide this into four pieces? One is the core with battery slots, and it's OK if the slots only fit a narrow range of battery choices. Then a piece for each electronics face. The printable piece is made by slapping together the core and up to three faces, with the core-to-face interface standardized.

If all that can be done without too much difficulty, then you could have a library faces for lots of different electronics modules and print off custom combinations to order.
Click to expand...
Honestly, I had the exact same idea. I was just being lazy, so never got around to posting suggestion...
 
Got a picture of the GBI mk24 from TurbulentSphere

The 24mm version was a little squirrelly on the way up and around burnout, but for what it's worth, I have seen some finned rockets fly worse.

40078071423_d9fdc3b245_z.jpg

Screenshot_20190210-132432_Video Player.jpg
Screenshot_20190210-132454_Video Player.jpg
 
Weather was iffy today, and on the cold side. As soon as it cleared up a bit we went and did some test launches at our local soccer field complex. 3 went up, 3 came down in one piece. All looked very straight/stable as they flew, so no complaints. Most importantly, the kids absolutely enjoyed it. They've been yammering about rockets since we left.

Had some pretty questionable parachutes though....stock plastic 12", and only one fully deployed. One streamered, and one didn't release the lines from the burrito fold. Looks like I need either new (probably thin mil nylon) chutes, or to apply more chalk.

Also think the A8-3s are on the bottom, most ragged edge of performance envelope. Perfect for the test flight today, and to stay under the low cloud cover. Probably need to step up to Bs of some sort.
 
shanejohnson2002 said:
Weather was iffy today, and on the cold side. As soon as it cleared up a bit we went and did some test launches at our local soccer field complex. 3 went up, 3 came down in one piece. All looked very straight/stable as they flew, so no complaints. Most importantly, the kids absolutely enjoyed it. They've been yammering about rockets since we left.

Had some pretty questionable parachutes though....stock plastic 12", and only one fully deployed. One streamered, and one didn't release the lines from the burrito fold. Looks like I need either new (probably thin mil nylon) chutes, or to apply more chalk.

Also think the A8-3s are on the bottom, most ragged edge of performance envelope. Perfect for the test flight today, and to stay under the low cloud cover. Probably need to step up to Bs of some sort.
Click to expand...
Congrats! Any rocket retrieved in one piece is good news.
Btw, Top Flight makes good thin Mil chutes.
 
“On the cold side” means plastic ‘chutes don’t want to open as you have seen. The best defense against that I know is talcum powder and packing them as close to launch time as you can get away with. There’s enough room in the Generic and the Crossfire to only have fold the spiked ‘chute in half at least.

We have a few “didn’t open” incidents at our club launch today (temps in the low 40s Fahrenheit) but the ground was quite soft from recent rains and snows so I don’t think there was any undue damage.
 
BEC said:
“On the cold side” means plastic ‘chutes don’t want to open as you have seen. The best defense against that I know is talcum powder and packing them as close to launch time as you can get away with. There’s enough room in the Generic and the Crossfire to only have fold the spiked ‘chute in half at least.

We have a few “didn’t open” incidents at our club launch today (temps in the low 40s Fahrenheit) but the ground was quite soft from recent rains and snows so I don’t think there was any undue damage.
Click to expand...


Makes sense. I did apply some red line chalk, but I'm thinking baby powder may be better. The chalk was pretty coarse, and stained everything in the rocket red. Not that it really matters...nobody sees the inside.

Also, lesson learned: put the chalk/talc/whatever in a small gladware container, and use a spoon or measuring cup. Pouring it straight from the container in the field isn't the easiest.
 
Haven't done anything rocketry in about a year other than read the forums.... Got out the CWF and did 2 nose cones and a set of fins. Wonder how long they will sit before I sand it off....
 
shanejohnson2002 said:
Also, lesson learned: put the chalk/talc/whatever in a small gladware container, and use a spoon or measuring cup. Pouring it straight from the container in the field isn't the easiest.
Click to expand...

Don’t dump the powder into the BT... sprinkle some into the parachute and rub it in. Well, nothing actually rubs into a plastic chute, but at least you distribute it to a fine layer. Do both sides and you’re good to go.
 
neil_w said:
Are you sure you’re not making steamed pork buns inside some freaky green steamer?
Click to expand...
Sounds kind of tasty, but no, thats the green painters tape to keep the nasty two part polyurethane foam from getting everywhere, the stuff is amazingly sticky. For those interested the foam is actually Sika Post Fix from Lowes a two part foam for filling around fence posts and appears and acts like the 2 part foam commonly used in rocketry applications. Its cheap, is about 2-3lbs/cu ft density and about 20:1 expansion ratio. I recently did a thread about it in Techniques iirc. It added about 14oz's to the 7.5" GLR nosecone (same as Loc afaik) The center tube is a 4" mailer tube (4" Loc airframe fits inside it).
 
20190217_161547.png
20190217_162124.png

Cleaning up the shop today (which is why the background looks like somebody broke in and tossed the joint looking for the microfilm). Found a piece of airframe and a pair of centering rings I didn't know I had <smile>.

The plywood is pretty good stuff, considering it was was only ever intended to keep about a quarter mile roll of sash cord from falling off the ends of a cardboard tube.
 

Similar threads

NTP2
What do you do (or did) for a living?
6 7 8
Replies
239
Views
7K
John Kemker
John Kemker
KenECoyote
Is it really a model rocket if you don't launch it?
4 5 6
Replies
158
Views
5K
bjphoenix
B
T
First-time UK Rocketeer looking for help!
Replies
5
Views
253
LD124
L
ljwilley
What do you think of my V2 rocket?
Replies
18
Views
2K
JPalmer621
J
M
Free Almost Free Model Rocket Building Service
Replies
1
Views
970
mh9162013
M

Latest posts

Back
Top