Any laminating epoxy thinned with some alcohol will work. I put it on any 3d printed parts I get for rocket kits.What epoxy are you using to paint onto the nose cone?
Any laminating epoxy thinned with some alcohol will work. I put it on any 3d printed parts I get for rocket kits.What epoxy are you using to paint onto the nose cone?
Any laminating epoxy thinned with some alcohol will work. I put it on any 3d printed parts I get for rocket kits.
I've tried with 15-minute epoxy but I think I need to thin it more; I was a little too cautious about how much alcohol to add. Important to remember that even if the alcohol weakens the epoxy, it doesn't matter for this type of application, as long as it can harden up enough to be hard and sandable.The technique to coat 3D printed parts with epoxy came from my SBR Thor 54 kit. He says to thin 12 minute epoxy with alcohol until it is the consistency of milk, then apply with a disposable brush. I used US Composites because I have it and it is already about that consistency. If you have BSI epoxy on hand, give it a try on scraps.
CHAD staging? Now I want one!Bullet Bobby has a tendency to land in parking lot breaking a fin. A spare is always a good idea. Another good idea (the RSO might not think so) would be to do a naked CHAD stage D12 0 booster motor beneath a C6 5. That heavy printed nose cone should be enough weight up front. If that works go for an E12 0 booster! Bullet Bobby can take the abuse!
He was being a bit facetious with that comment I think....based on seeing that flight in person (that's me doing the countdown in my usual role as club LCO at our launches).Ordered. Can't wait to build it. Looks awesome! Ryan said in his review..."the aerodynamics of a trash can lid..."! 'Bout fell of my chair!
Yes, yes you do...CHAD staging? Now I want one!
I have a history-
You know it's only gonna be like 18" tall! Lol would be super cool...I ordered the kit. I have a short section of 7.5" tubing. Upscale anyone?
I use the 20 min BSI and thin it out. Works pretty good to get rid of divots and strengthen the part. I've tried sanding and CWF with only ok results. I did see the @Flyfalcons used medium CA, which I may try when I build the kit.I didn't thin mine, It does require some sanding once it cures, but it fills the ridges and should add some strength to the parts.
I know he was. I enjoy his build videos, and was pleasantly surprised when he built this rocket!He was being a bit facetious with that comment I think....based on seeing that flight in person (that's me doing the countdown in my usual role as club LCO at our launches).
I started by weighing everything and building a sim file for Open Rocket.
Could you please share it with us? Any idea how much weight the epoxy on the nose increased the weight? I don't think a bit of extra nose weight will hurt, just trying to be accurate with the sim.
Interesting...it really only is an issue on super hard landingsWould small fin gussets (like the original Super Big Bertha) be a cheap/simple way to improve the fin stability without any major redesign?
Keep me posted lol. Very curious!My kit is due to arrive today and if all goes as planned it will be CHAD staged at the next TriCities Rocketeers launch. D12-0 to a C6-5 should be sporty if I can get the correct CG to CP.
There may or may not be an official 24mm in the works. I have flown it on an E30 lol. LMK if you want tips on what I've found out so far hahahaI'm considering modifying the kit to a 24mm motor mount. O the possibilities!
I would like a high power version since one of my kids has already claimed the one arriving today.Wow, just found this thread. Thanks for all the comments and excellent build tips and pics! Glad you guys are enjoying the kit. I definitely have spare parts if you need them, and an OpenRocket sim file as well. Feel free to reach out here or on the site! Upscale is in the works (just figuring out exactly how big to go lol). Fins do occasionally break off with a hard landing (as they do on other rockets) but since they're basswood, I have yet to see the fin actually break - more like it just comes detached from the BT and can be re-glued or even taped in the field. I may or may not have used a taped-on fin for like 1/3 of initial testing hahah.
Ryan's (unsolicited) review was amazing and I also was dying at the "aerodynamics of a trash can lid" comment lol.
Now ya'all got me thinking about staging....hmmm.
I'm having a ton of fun seeing everyone building and launching Bullet Bobby, and am trying to get a few new kits out into beta shortly! Thanks for the support!
My kit is due to arrive today and if all goes as planned it will be CHAD staged at the next TriCities Rocketeers launch. D12-0 to a C6-5 should be sporty if I can get the correct CG to CP.
If their is no video; there is no proofVideo is mandatory!
Now ya'all got me thinking about staging....hmmm.
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