What did you do rocket wise today?
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berlinetta
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I epoxied two of the four fins into the Bullet Bobby XXL last night. I'll do the other two today.
James Owen
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I JB-Welded the fins onto my scratch built rocket, lava lamp, yesterday, and today I’m working on adding some fin fillets. The fins are mounted through-the-wall. The fins are CNC machined out of acrylic on my desktop cnc, I’m using a 38mm phenolic motor mount tube, and the centering rings are 3D printed in “tough” resin, which in testing I’ve found to be virtually indestructible (on this scale). Kevlar shock cord mounted in the forward centering ring, and screws for the motor retainer are in the aft ring.
The picture is of the first set of fillets I added today. Video is a time lapse of installing the first 2 fins.
The picture is of the first set of fillets I added today. Video is a time lapse of installing the first 2 fins.
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Edit Add: Continued work on a Radical Rocketry F104 (Thanks @BigMacDaddy !). I had other builds in process, but couldn't resist!
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Just taking 5 from the storm carnage for another Kurrboo dry-fit.
I like.
I like.
Is it stable?
On the desk, super stable.
Seriously, OR shows 1.3 cal stability with 10 gm nose weight and 3x C6-5s.
Flight testing will tell, of course.
Kiddo's birthday haul. None were from us...all from aunts and uncles.
Just for ***** and giggles.... swing test it...On the desk, super stable.
Seriously, OR shows 1.3 cal stability with 10 gm nose weight and 3x C6-5s.
Flight testing will tell, of course.
Just for ***** and giggles.... swing test it...
Oh, that’s on the list.
Worked on improving our club launch equipment.
Sooner Boomer
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Had some energy this morning. I stuffed and soldered my Eggtimer Classic dual-deploy altimeter circuit board. I have an Eggtimer serial cable, so I installed Putty on the laptop. Checked out my Eggtimer Apogee first, then the Classic. Looks like everything is working. I discovered that both the Amazon batteries as well as the cables had the color of the leads reversed with respect to the Adafruit battery. Being lazy, I popped the connectors out of their housings and reversed them. Now I should be able to charge the Amazon batteries with the Adafruit charger. I got the sled pretty much complete and ready to go.
[edit] Pics - circuit board on sled, and batteries on the other side.
[edit] Pics - circuit board on sled, and batteries on the other side.
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Started working on the Zephyr. Got most of the motor mount done yesterday. Added a couple of Z type clips fashioned out of 1/2" aluminum to the aft centering ring for motor retention. Today was spiral filling and plywood sealing day.
XrayLizard
Well-Known Member
I quit moping about an unexpected early retirement. And re-upped my NAR membership, then sent my member application to DARS.
Also, unrelated though, sharpened my kitchen knives, with my new sharpener (its great), ordered a larger pyrex mixing bowl and a Swissmar Mandolin slicer.
the good news is I have a room full of body tubes and fin materials. Along with a GF who just maybe, might, possibly, buy Motors
the dang thing is, the job I had kept me from attending launches... I worked weekends. ughh. Well, at least I got to attempt "Golf" during the other days off.
Also, unrelated though, sharpened my kitchen knives, with my new sharpener (its great), ordered a larger pyrex mixing bowl and a Swissmar Mandolin slicer.
the good news is I have a room full of body tubes and fin materials. Along with a GF who just maybe, might, possibly, buy Motors
the dang thing is, the job I had kept me from attending launches... I worked weekends. ughh. Well, at least I got to attempt "Golf" during the other days off.
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- Told off another sanctimonious California Hater here on TRF.
- Continued standardizing connectors on all my low power, meaning Eggtimer electronics, to use a single connector for the battery. Aka soldering
- Documented/checklist my up coming flights.
I was being neither sanctimonious OR hating California. I merely stated the fact, that I will not voluntarily return to the State.
Edit your post and remove your lie, please.
Started laying some fillets on the fin can of "Fluster Cluck" today.
Removed mandrel and sleeving from the smallest fiberglass tube I have made to date.... I am building some of the small BT size Mach1 rockets. One thing I don't like is the Estes 3/16 straw for a launch lug, (I like the mini-Rail buttons , but the cardboard tube, just bugs me) ...I use both, that way I can launch from Rod or Rail... so I made a 1/4 fiberglass one. It worked, SO I may try for 3/16 & 1/8 fiberglass tubes next...
For comparison LOC 1/4 lug is:
ID=0.280", OD=0.343", Weight .40 grams/inch.
Mine is:
ID=0.282", OD=0.325, Weight .53 grams/inch.
For comparison LOC 1/4 lug is:
ID=0.280", OD=0.343", Weight .40 grams/inch.
Mine is:
ID=0.282", OD=0.325, Weight .53 grams/inch.
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Finished up another of the $21.99 Der Big Red Max Rockets but don't have the guts to paint until warmer and dryer spring weather finally arrives....
Took a break from sanding to clean up some open rocket files when I came across this scratch build I did a little over a year ago. Called it the Screamin' Demon. Then a thought hit me.
I've had an Apogee E6-6 long burn motor in my box for a while now. So for giggles I modeled it into the Demon with a 96" mylar streamer for recovery. Apogee topped 2000' and with a 10mph wind it still tracked pretty darned straight. I'm thinking I've just got to launch this config this year!! But perhaps I should rename it to something more appropriate like....."Recovery Optional", "Gone in 6 Seconds", or "Don't Blink"
I've had an Apogee E6-6 long burn motor in my box for a while now. So for giggles I modeled it into the Demon with a 96" mylar streamer for recovery. Apogee topped 2000' and with a 10mph wind it still tracked pretty darned straight. I'm thinking I've just got to launch this config this year!! But perhaps I should rename it to something more appropriate like....."Recovery Optional", "Gone in 6 Seconds", or "Don't Blink"
Making progress on night flight rocket. Committed to sticking light strip on NC. Fabricated a battery box out of cardboard. I don't need no stinkin' 3d printer. Waiting on 9v battery clips from ebay to finish up NC. Got to make another trip to Wally World to get lights for the bottom 1/2. Here's a proof of concept
View attachment 20230126_131843.mp4
View attachment 20230126_131843.mp4
Started on this Semroc Kit. 
Handy dandy engineers ruler ensures good alignment for Kurrboo fin can.
As an aside, my iPhone has added ‘Kurrboo’ to its predictive text.
As an aside, my iPhone has added ‘Kurrboo’ to its predictive text.
I cut the first fin out of the 3mm plywood for the short fat Diablo just to see how well the saw would cut it.
Some CAD, some plywood, and a finished motor mount.
I haven't DONE anything yet, but i RECEIVED it today. The smaller bt has a crease, but I have some bulk packs coming. Still excited though. Hands down my favorite as a child, and now that I have a 35 year old original in hand, I'm fairly chuffed.
Williamhimka
Well-Known Member
…
Kinda fell into the dark and scary world of minimum diameter.
I don’t regret it one bit.
Well not yet at least…
Thanks again @jd2cylman for the hardware!
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