Search found 1051 matches

by drew
Wed Feb 24, 2021 10:07 pm
Forum: Scratch Built
Topic: HPR X Wing - T70
Replies: 36
Views: 8884

Re: HPR X Wing - T70

Excellent work Mat! I'm having flashbacks to my childhood when my father would melt lead in a process virtually identical to this to pour lead weights for duck decoys.
by drew
Tue Feb 02, 2021 5:13 pm
Forum: Mid/High Powered Rocketry
Topic: Ejection charge cap
Replies: 14
Views: 865

Re: Ejection charge cap

Vast majority of flights i use 5ml centrifuge tubes for charges. They're bigger than the 3ml ones that come with AeroTech motors. I've yet to have one rupture the tube, the cap gives way and that's it. I bought a 300 pack of them from Amazon for less than $30 AUD. I'm not a fan of charge canisters a...
by drew
Tue Jan 19, 2021 8:22 pm
Forum: Electronics
Topic: Arduino Radio Beacon
Replies: 3
Views: 875

Re: Arduino Radio Beacon

Hey DiscountBatman! Apologies for not replying sooner but I do think I've got a point worth making. Specifically, if you're looking to make a radio beacon, you want to stay away from radios that utilise spread spectrum modulation. This is due to the fact that spread spectrum utilises a wider bandwid...
by drew
Tue Jan 19, 2021 7:19 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 17
Views: 1909

Re: Just following the Script...

OverTheTop wrote:Currently mounting the 1.3GHz telemetry transmitter

Hey OTT, good to see you working on your VTS again. With reference to the 1.3GHz telem, I assume you've selected that frequency due to COTS kit already available for your FC?
by drew
Fri Sep 18, 2020 5:22 pm
Forum: How's the Weather..?
Topic: Hobbyking Pulse Jet
Replies: 29
Views: 8580

Re: Hobbyking Pulse Jet

Anyone got one of these that they no longer require? I've got a mate that's interested in getting one but it appears HobbyKing no longer sells them.

Cheers.
by drew
Fri Aug 21, 2020 7:47 pm
Forum: Scratch Built
Topic: Vacuum tooling for composite construction
Replies: 22
Views: 2628

Re: Vacuum tooling for composite construction

I love your use of the metal tubing to ensure your threaded rods for the fin alignment guide are equal length. I'm going to have to steal that technique!
by drew
Fri Aug 21, 2020 7:45 pm
Forum: Self Introductions
Topic: Hiya Everyone!
Replies: 3
Views: 1440

Re: Hiya Everyone!

I think this group would be what you're after.

https://www.facebook.com/SwinburneAerospaceandSpaceSociety
by drew
Tue Aug 18, 2020 4:36 pm
Forum: Propulsion
Topic: CTI 38mm Tailcone
Replies: 4
Views: 3496

Re: CTI 38mm Tailcone

If you do a bit of digging in TRF looking at posts from Crazy Jim on this topic he and Charlie Ogino did this YEARS ago (2015?) and it was a "certified" modification in CTI's eyes. IIRC that would have been the rocket you can just see on the Tripoli Single motor altitude records page, entr...
by drew
Mon Aug 03, 2020 11:59 am
Forum: Scratch Built
Topic: Vacuum tooling for composite construction
Replies: 22
Views: 2628

Re: Vacuum tooling for composite construction

Great work mate. I might have a line on some super cheap breather if you'd like some.... Safe to say we know a guy. :D
by drew
Mon Aug 03, 2020 11:56 am
Forum: NSW Rocketry Association
Topic: NSWRA Low and Mid Power Launch 25th July 2020
Replies: 6
Views: 2386

Re: NSWRA Low and Mid Power Launch 25th July 2020

Beautiful pics! Glad to hear y'all are back to flying. Stay safe.
by drew
Mon Jul 27, 2020 9:47 am
Forum: Scratch Built
Topic: Running in the 90's - my Aeronaut Project
Replies: 27
Views: 5457

Re: Running in the 90's - my Aeronaut Project

Lol, the Bare Necessities fincan folded up like an accordion. No, it did not, It survived the supersonic corkscrew, same for the nosecone. Huh, fair enough. I think we can both agree that the rocket wasn't stable though. :lol: Also, fingers crossed you're not falling down the "optimized" ...
by drew
Sun Jul 26, 2020 12:07 pm
Forum: Scratch Built
Topic: Running in the 90's - my Aeronaut Project
Replies: 27
Views: 5457

Re: Running in the 90's - my Aeronaut Project

Talking about the design, I've ditched the sustainer's composite fin canister for a "Bare Necessities" style fin can. I'm currently expecting it to weigh less than 550g :lol: , I'm still working on it. Getting it 3d printed in one piece out of aluminum is something I'm considering (with a...
by drew
Tue Jul 21, 2020 3:23 pm
Forum: Mid/High Powered Rocketry
Topic: Institutional knowledge
Replies: 8
Views: 1064

Re: Institutional knowledge

Laminate thickness depends on the type of reinforcement AND the amount of resin. Correct. And the "ballpark" ratio we work towards in the hobby is 1:1, right? And maybe a little less if your layup is under vacuum? I'm not an expert but from my understanding anything above a 1:1 ratio will...
by drew
Mon Jul 20, 2020 2:16 pm
Forum: Scratch Built
Topic: Avionics bay for HPV4PoC
Replies: 19
Views: 2421

Re: Avionics bay for HPV4PoC

This AV bay is GORGEOUS. Well done d00d.

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