Search results

From a fluid mechanics point of view... you only need one hole to achieve atmospheric pressure within the body of the rocket.

It sure does fly great. I knew it wasn't going to be a high flier with the extra weight... I didn't mind though. It looks great low and slow. Would love to see a pic of yours when you get it finished. That sounds awesome. Mine isn't much heavier than that. I've been actually thinking about...

Launch Day: Finally got to let this thing fly... and it did fantastic. Made it to 645ft on a Estes F15-6. Enjoy the video! https://youtube.com/watch?v=KKP7FqNAjdA Put it up a second time and it performed just as well. Might try some composite motors on it next time.

Day 17: Finally got some good weather and managed to clear coat her. Finally attached everything together too. Used elastic shock cord connected to the kevlar bottom and a quick link up at the nosecone. Replaced the shoot with a nylon one and have that hooked to a swivel and then the quick...

On this one I used Rustoleum painters touch for primer, then gloss white and gloss apple red. I always get crinkling with their clear though so I plan to use a high gloss acrylic for that. Tend to stick with one brand and line for the entire process if I can to avoid adverse reactions.

Ok... I calibrated the scale and it's outputting valid values... final results are: Super Big Bertha 13.30oz / 377g / 0.831lb and in comparison; Star Orbiter 7.16oz / 203g / 0.448lb My Star Orbiter isn't built stock either... pretty much has the same mods as the Bertha but with no baffle.

Its definitely not 2077 g... my Argent is about 2.5 lbs loaded and this one feels slightly heavier then my Star Orbiter and nowhere near as heavy as the Argent.

The 7 was a typo... it’s 13.26 oz according to the shipping scale I used. I’ll make sure it’s calibrated correctly and weigh it again when I get home from work.

Thank you. Thanks. The weight comes in at 73.26 oz / 376 g with everything but motor and chute release installed.

Day 12 - 16: Finally was able to start painting. I covered it in two coats of white primer and sanded it like crazy. Then I gave it two strong coats of gloss white. Followed by the red fin can. Finally I was able to put it all together and get the decals on. Turned out pretty good. Still...

Yes... buy them all. They used to run $25-$30 a pop.

Are you sure they’re composite? I’ve never seen HL carry composite motors... only the 29mm ProSeries II black powder motors. UPDATE: Nevermind, read the motor you listed... guess my local one doesn’t carry them. The only ESTES I have that calls out a composite is the Argent.

Day 11: Finished the other two sides of epoxy fillets and decided it was time to push foreword to the paint stage. But first I had to apply the launch lugs using 5-min epoxy. Then I coated the inside aft end of the motor tube with super glue to make the cardboard stronger. I also utilized...

As it stands... 2.57 oz. That's without paint and nylon parachute though.

Thanks guys.

CR52H80-W is what I used.

Day 10: Continued working on the fin can... Pulled out the aft centering ring so I can epoxy the fins to the motor mount. Added 5-min epoxy fillets to the fin tabs where they met the motor tube as well as next to the body wall. Then I covered the middle centering ring in 30-min epoxy and...

Day 9: Today I decided to glue in the motor mount and attach the fins. Started by attaching some eyelets to the aft centering ring. That way I can use it to center the motor mount while I glue the forward and center ring... but still maintain the ability to pull it out after the fins are...

Day 4: Finished up filleting the launch lug today. Used the same process as the fins. Did one side at a time and then flipping to the other side an hour later. I then gave the aft centering ring a ProBond fillet to strengthen the connection. Finally I attached the elastic fabric shock...

Day 3: Started epoxy fin filleting today. I decided to use a 3/16" dowel to define my fillets on this rocket. Cut off two smallish pieces to use for marking and forming the epoxy. I rubbed pencil on the marking piece and ran it along the base of the fins to mark the fillets. I then taped...