Search found 100 matches

by camacd
Fri Jun 19, 2015 7:10 pm
Forum: Mid/High Powered Rocketry
Topic: Moving to reusable motors
Replies: 22
Views: 3281

Re: Moving to reusable motors

Oh man, I have so much to learn. I feel very humble in this dialog. My motor hooks are home made - and pretty robust. I needed one for a smaller rocket a few weeks ago and it was too late to buy a proper one, so the farmer in me emerged and I flattened a piece of #12 gauge wire into a flat. I kept b...
by camacd
Thu Jun 18, 2015 8:14 pm
Forum: Mid/High Powered Rocketry
Topic: Moving to reusable motors
Replies: 22
Views: 3281

Re: Moving to reusable motors

If anyone here is any good with spreadsheets I would like a copy of this where the titles stay at the top when scrolling I can help with this one - it can be done with any spreadsheet. Go to the "View" menu across the top and select "freeze panes". You then get choices where you...
by camacd
Tue Jun 16, 2015 8:28 pm
Forum: Mid/High Powered Rocketry
Topic: Moving to reusable motors
Replies: 22
Views: 3281

Moving to reusable motors

Hi guys. Could someone give me a few pointers on the subject of reusables. I'm building a scratch build rocket with a 29mm mount. The original thought was to use aerotech single use G motors, but I suspect if I go towards reusables, I will have more options, including maybe stepping up to an H motor...
by camacd
Tue May 19, 2015 8:43 pm
Forum: Queensland Rocketry Society
Topic: 17 May 2015 Launch
Replies: 26
Views: 5396

Re: 17 May 2015 Launch

Hey thanks for the support everyone! I took Harry and the twins, Aiden & Marly out and they had a ball. We made a few sacrifices to the rocket gods, but that's all part of the fun. I'm learning more every time. The breeze mean we spent plenty of time blundering around in the long grass. I must h...
by camacd
Tue May 05, 2015 8:19 pm
Forum: Electronics
Topic: Entry Level Altimeter
Replies: 3
Views: 2163

Entry Level Altimeter

Can anyone recommend an entry level altimeter. I'd like to start dabbling in dual deployment, as well as flight data capture. I want something thats relatively easy to set up and reliable. I'd prefer if there's not too much difficulty involved in any computer interfacing. There seem to be a few item...
by camacd
Mon Apr 27, 2015 8:28 pm
Forum: Mid/High Powered Rocketry
Topic: Stepping up to G motor rocket - dual deployment?
Replies: 13
Views: 2778

Re: Stepping up to G motor rocket - dual deployment?

I've had a couple of suggestions about doing a single deployment at apogee in order to learn about altimeters etc. What equipment do I need - an altimeter obviously. What ejects the nosecone? I would need some type of ejection charge. Can these be bought already made up, or will I need to learn how ...
by camacd
Sun Apr 26, 2015 1:45 pm
Forum: Mid/High Powered Rocketry
Topic: Stepping up to G motor rocket - dual deployment?
Replies: 13
Views: 2778

Re: Stepping up to G motor rocket - dual deployment?

Agreed about the 100 ft deploy - that was a typo for 1000 ft. I obviously have a lot of reading to do and some talking next time I'm at a launch day. It looks like any option will be pretty heavy. I might just stick with a simple deployment for this build, and just make the chute reasonably small an...
by camacd
Sat Apr 25, 2015 6:45 am
Forum: Mid/High Powered Rocketry
Topic: Stepping up to G motor rocket - dual deployment?
Replies: 13
Views: 2778

Stepping up to G motor rocket - dual deployment?

I've scratch built a few rockets now and I'm pretty happy with progress - a few fails but overall OK, and I'm keen for more power! I'm designing a g powered rocket, and it looks good on Openrocket, so I'm happy with getting it to apogee, and now I want to get it back to earth. I'm interested in how ...
by camacd
Thu Apr 09, 2015 8:16 pm
Forum: Self Introductions
Topic: Hi There from me & my son
Replies: 8
Views: 2492

Re: Hi There from me & my son

Thanks everyone for the welcome. I've located a number of useful papers on the web and found drag formulae, barroman equations etc. I've created a spreadsheet using these principles to determine total mass, CG, CP, and also to do an incremental flight analysis. I can put in different motors and it w...
by camacd
Wed Apr 01, 2015 9:11 pm
Forum: Self Introductions
Topic: Hi There from me & my son
Replies: 8
Views: 2492

Hi There from me & my son

My Son Harry and I have recently discovered rocketry. I bought him a ready to fly rocket for Christmas. After a few misfires and some frustration for a day or so, we worked out that the Estes ingiters were a bit dodgy and that you need a good battery to make them fire. Anyway, we then went to a Qld ...

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