Search found 733 matches

by matthew
Thu May 02, 2019 8:59 pm
Forum: Thunda Down Under 2019
Topic: Thunda Down Under 2019 Photo and Video Thread
Replies: 34
Views: 1882

Re: Thunda Down Under 2019 Photo and Video Thread

Matthew's RB-05A ... motor? M1830? Matthew's Dark Star ... motor? Hah, a bit late now but for posterity: Yes, Pro75 4G M1830-CS, and Pro38 6GXL J520-SK. Great photos and videos, everyone. Thanks for posting! I didn't get too many photos. Looking back at the silos and campsite after recovering the D...
by matthew
Fri Apr 12, 2019 4:19 pm
Forum: Thunda Down Under 2019
Topic: Need to buy or borrow a CTI l1395 or l1355 for a two stage flight.... that just maybe is crazy and well thought out enou
Replies: 5
Views: 280

Re: Need to buy or borrow a CTI l1395 or l1355 for a two stage flight.... that just maybe is crazy and well thought out

Lamp, you know, I flew an M1830 at the last Thunda* , but I don't recall whether it has the pyrodex or not. I'm fairly certain it was just an ematch and a smoke grain. It did light without issue. If you search youtube for "Matt's L3 cert flight" you'll find drew's video of it. I've flown a...
by matthew
Wed Apr 10, 2019 6:38 pm
Forum: Thunda Down Under 2019
Topic: Need to buy or borrow a CTI l1395 or l1355 for a two stage flight.... that just maybe is crazy and well thought out enou
Replies: 5
Views: 280

Re: Need to buy or borrow a CTI l1395 or l1355 for a two stage flight.... that just maybe is crazy and well thought out

I have a 4G M1830 that I'm not married to. Would need a 3 or 4G 75mm that can safely launch a 6kg dry weight 4" rocket in it's place. :)

By the way, the phone number you gave apparently isn't yours...
by matthew
Wed Apr 10, 2019 4:55 pm
Forum: Thunda Down Under 2019
Topic: Telemtry
Replies: 6
Views: 255

Re: Telemtry

Not telemetry, but for tracking I will have a couple of Eggfinders: 919MHz and 921MHz.
by matthew
Sat Mar 30, 2019 5:17 pm
Forum: Thunda Down Under 2019
Topic: What is your project for Thunda Down Under 2019?
Replies: 59
Views: 11882

Re: What is your project for Thunda Down Under 2019?

Another first for me - having to take a ladder to the launch so I can arm my avionics. :lol:

2stgds_ready_600x800.jpg
2stgds_ready_600x800.jpg (232.62 KiB) Viewed 295 times
by matthew
Sun Mar 24, 2019 11:26 am
Forum: Thunda Down Under 2019
Topic: Campsite map/choice for Thunda?
Replies: 7
Views: 415

Re: Campsite map/choice for Thunda?

I'm keen to get this sorted, too. Will have two camper trailer setups in our group. I'll be on the road away from Internet access for a week prior (upgrading my dear old Mum's off-grid solar stuff in the middle of nowhere). Will be arriving at the Funny Farm on the Tuesday, so that I can help with r...
by matthew
Fri Mar 22, 2019 7:08 pm
Forum: Propulsion
Topic: Which AT 38/360 or 38/720 reloads for airstarts?
Replies: 12
Views: 26037

Re: Which AT 38/360 or 38/720 reloads for airstarts?

I would go with a CTI in the sustainer, the pyrodex slug in the top grain really makes them easy to light. If you really want to use an AT, as Kryten suggests, a Blur Thunder motor would be my choice... I really need to recheck what motors I ordered, but I'm fairly certain it will be a CTI in the s...
by matthew
Fri Mar 22, 2019 7:01 pm
Forum: Mid/High Powered Rocketry
Topic: Saturn V 1:100 Scale Estes Kit #001969
Replies: 12
Views: 650

Re: Saturn V 1:100 Scale Estes Kit #001969

OverTheTop wrote:Now I need to decide: Build either one or the other, or both!


I'm surprised you even have to ask given there is only one correct answer. :lol:
by matthew
Fri Mar 22, 2019 5:42 pm
Forum: Thunda Down Under 2019
Topic: What is your project for Thunda Down Under 2019?
Replies: 59
Views: 11882

Re: What is your project for Thunda Down Under 2019?

Well, I -should- have something to fly. The 2 Stage Darkstar Jr and the RB-05A have made it to painting. I have also reincarnated my Drag Queen from Thunda15. It has a new airframe (the blue tube warped on the original after spending some time in a paddock before being recovered) so it is now dubbed...
by matthew
Wed Dec 12, 2018 7:40 pm
Forum: I could use that
Topic: HobbyKing Mini 3-Axis CNC Milling Machine
Replies: 3
Views: 2134

Re: HobbyKing Mini 3-Axis CNC Milling Machine

Re: the first one you posted. I just made a control board for one at uni. We used a Freedom K22F mcu for the brains. I think the HK one uses an Arduino UNO. Range of motion for the head was ~150mm x 100mm x 40mm, iirc. You'll get less working room when you try to clamp down the work piece. 200 full ...
by matthew
Sun Nov 25, 2018 4:26 pm
Forum: Whooshtronics
Topic: clust-o-matic
Replies: 34
Views: 15927

Re: clust-o-matic

Hi Matt, Does the LED actually do anything useful?. If you don't like it, don't include it, but when I connect the e-matches to the terminals I would like a visual indication that the circuit is not in a triggered state... Great, that's useful info. I was thinking that no-one would have their avion...
by matthew
Fri Nov 23, 2018 7:28 am
Forum: Rocketry Control Room
Topic: "The Eagle has landed": 50th Anniversary of the moon landing.
Replies: 6
Views: 2780

Re: "The Eagle has landed": 50th Anniversary of the moon landing.

Apparently the bonus in the Estes 1/100 Saturn V kit will be a 1/100 model of the Eagle Lunar Module.
by matthew
Fri Nov 23, 2018 7:21 am
Forum: Whooshtronics
Topic: clust-o-matic
Replies: 34
Views: 15927

Re: clust-o-matic

Nice work, CATO! ;) Say, since I'm off at university and doing this kind of thing, I figured I may as well have a crack at making my own version. Would there be any interest in a dual input version? ie. Can fire 2 lots of 2 channels separately,or put on a jumper and make it a single input firing all...
by matthew
Sun Nov 18, 2018 6:22 pm
Forum: Thunda Down Under 2019
Topic: What is your project for Thunda Down Under 2019?
Replies: 59
Views: 11882

Re: What is your project for Thunda Down Under 2019?

Hey Al, it's fantastic you're heading down again! As for projects, I have far too many planned but have narrowed it down to a stretched RB-05A on a M1830, and a J-J 2 stage Darkstar Jr. Others will be if time allows. I'd really like to do a small upscale of my first ever scratch build. I have the pa...
by matthew
Sun Nov 18, 2018 5:20 pm
Forum: Rocketry Control Room
Topic: "The Eagle has landed": 50th Anniversary of the moon landing.
Replies: 6
Views: 2780

Re: "The Eagle has landed": 50th Anniversary of the moon landing.

Well, the Royal Australian Mint didn't disappoint: https://eshop.ramint.gov.au/images/10076/PROD_MIDUM_IMG/10076_D_Reverse%20of%201%20dollar%20proof%20coin%202019%20fiftieth%20anniversary%20of%20the%20moon%20landing%20Six%20Coin%20proof%20year%20set_2.jpg https://eshop.ramint.gov.au/images/10076/PRO...

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