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by OverTheTop
Wed Jul 18, 2018 6:30 pm
Forum: Scratch Built
Topic: Airframe choices (or why you should consider rolling your own airframes)
Replies: 44
Views: 1507

Re: Airframe choices (or why you should consider rolling your own airframes)

Good progress Joe. Have you thought about a layer of fiberglass "tissue" as a cosmetic improvement?
by OverTheTop
Wed Jul 18, 2018 2:43 pm
Forum: Melbourne Amateur Rocket Society Inc.
Topic: Tripoli (Victoria) August 2018 Launch
Replies: 0
Views: 27

Tripoli (Victoria) August 2018 Launch

Tripoli (Victoria) Launch, 5th August 2018 Tripoli would like to send an open invitation to anyone interested in attending our launches. The August 2018 launch is currently scheduled for 5th August, pending weather and launch site availability. TRABanner2017.jpg Our launch site is located approxima...
by OverTheTop
Wed Jul 18, 2018 2:15 pm
Forum: Melbourne Amateur Rocket Society Inc.
Topic: Tripoli (Victoria) Club Night, Thursday 19th July 2018
Replies: 0
Views: 23

Tripoli (Victoria) Club Night, Thursday 19th July 2018

Tripoli Rocketry Club will be holding a club night on Thursday 19th July 2018. The good news is Everyone is Invited! Our guest speaker this time is Anthony Violi , who spoke to us last year about his plans to build a commercial liquid-fueled rocket. Anthony is planning to speak to us about his prog...
by OverTheTop
Wed Jul 18, 2018 10:53 am
Forum: Australian Rocketry
Topic: Availability of stratologgers
Replies: 4
Views: 102

Re: Availability of stratologgers

Did you ping Blake on info@ausrocketry.com ? Sometimes he has stock but has not had a chance to update the website yet. A quick email always settles it.
by OverTheTop
Sun Jul 15, 2018 4:00 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System (with some 3D printed parts)
Replies: 45
Views: 5040

Re: Vertical Trajectory System (with some 3D printed parts)

Managed to find the broken piece of the FDM so I have updated the family portrait (scale in inches): DSC07140resize.JPG You can see from the results table in the previous post that the Tough and the Pro Grey were the strongest of the group. The capability of that material has really surprised me! I ...
by OverTheTop
Sun Jul 15, 2018 2:33 pm
Forum: Propulsion
Topic: Estes E Motor Reliability
Replies: 6
Views: 107

Re: Estes E Motor Reliability

Looks like the smallest Cesaroni reloadable is an E22, which is bit big (and the rear closures aren't in stock in Aus). Aerotech has an E11, which would be good (but I can't see the 24/40 cases in stock in Aus). Aerotech do C and D motors in 18mm, and the 24mm does D, E, F I think. Reloadable hardw...
by OverTheTop
Sun Jul 15, 2018 11:30 am
Forum: Propulsion
Topic: Estes E Motor Reliability
Replies: 6
Views: 107

Re: Estes E Motor Reliability

Based on what I have read and seen in the past couple of months my aversion to the E and F motors has been vindicated. As Digit said, try some of the reloadable composites.
by OverTheTop
Sat Jul 14, 2018 5:10 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System (with some 3D printed parts)
Replies: 45
Views: 5040

Fin Strength Testing

Testing Fin Strength I have access to a couple of 3D printers. One uses FDM (StrataSys 1200es), and the other SLA ( Formlabs 1+) technology. So, the question arises: Which material should I print my flight fins from? The FDM prints (same as my earlier 3D printed parts) have a weakness in the Z-axis...
by OverTheTop
Tue Jul 10, 2018 7:36 am
Forum: Scratch Built
Topic: Steampunk 1
Replies: 21
Views: 399

Re: Steampunk 1

What a great link! 8) Tutorials too :)
by OverTheTop
Mon Jul 09, 2018 9:32 pm
Forum: Scratch Built
Topic: Steampunk 1
Replies: 21
Views: 399

Re: Steampunk 1

Great stuff so far. Looking forward to seeing the outcome of this.
by OverTheTop
Sat Jul 07, 2018 4:56 pm
Forum: Scratch Built
Topic: Steampunk 1
Replies: 21
Views: 399

Re: Steampunk 1

Good effort from the little ones.

Not bad, except I think the parachute us upside down.


I think they are thinking of the HIAD devices NASA are developing: https://www.nasa.gov/directorates/space ... index.html :wink:
by OverTheTop
Fri Jul 06, 2018 6:36 pm
Forum: Scratch Built
Topic: Steampunk 1
Replies: 21
Views: 399

Re: Steampunk 1

I love the steampunk theme. Looking forward to seeing the build.

Might have to do a HPR steampunk of some sort at some stage.
by OverTheTop
Thu Jul 05, 2018 12:11 pm
Forum: Self Introductions
Topic: Greetings
Replies: 14
Views: 342

Re: Greetings

Welcome to the forum Derek. Lots to learn in LPR and MPR. Progress when you want to to HPR. It is addictive though :)
by OverTheTop
Sun Jul 01, 2018 10:20 am
Forum: Self Introductions
Topic: New Guy from U.S.
Replies: 5
Views: 125

Re: New Guy from U.S.

Welcome to the forum Bob. Yes, exciting times with the availability of materials and technology making all this easier. If you look at organisations like Up Aerospace and others, they have started from a HPR base and expanded the envelope from there. Australia even has a Space Agency now (as of toda...
by OverTheTop
Wed Jun 27, 2018 8:29 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System (with some 3D printed parts)
Replies: 45
Views: 5040

Re: Vertical Trajectory System (with some 3D printed parts)

You could fly it without fins. Place a camera on the exterior to see how the servos are behaving.


Thought about that, but may as well go the "whole hog" as the pig farmers say :)

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