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by joeman
Wed Oct 03, 2018 10:11 am
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Hi, I have designed and created a neat switch for the rocket. IMG_6381_overview.JPG Here I am using the elastic properties of ABS plastic to create a "Normally Open" switch. * I've mechanically attached the copper contacts, bending them around faces. * I've had to apply a bit of epoxy to k...
by joeman
Tue Oct 02, 2018 10:00 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

As promised, response from JollyLogic. Joseph, People have successfully used Chute Release on 38mm rockets, but can be a tight fit, so some care must be taken not to end up with chute that gets stuck in the fuselage. One technique is to just bundle the bottom of the parachute, then just fold up the ...
by joeman
Mon Oct 01, 2018 6:06 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Yes.
Launch tower build is something I will start soon. No lugs or buttons on this rocket, so existing launch towers won’t do.

Cheers

Joe


Sent from my iPhone using Tapatalk
by joeman
Mon Oct 01, 2018 5:14 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Cool Matthew. It'd be nice to catch up; but definitely only if you can. I know it is a bit hectic at the moment. RE: Recovery Deployment Definitely keep my options open...not rule anything in or out. Cable Cutters do sound like a neat way to solve the problem. More things to research and learn about...
by joeman
Mon Oct 01, 2018 4:34 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

p.s. I'm going to e-mail JollyLogic

I'll paste my response here.

Cheers!

Joe
by joeman
Mon Oct 01, 2018 1:17 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Hi, I'm looking at purchasing a JollyLogic Chute Release. In the specifications, it says:- Rocket requirements Requires the use of motor ejection, and enough space for Chute Release and parachute, at least BT-60 1.6″ (41.6mm) diameter tube. May work in some 38mm rockets. My rocket has has internal d...
by joeman
Sun Sep 23, 2018 9:14 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Thanks Drew [emoji3] Nice to know I’m not the only person with the “my aluminium tip is off axis when screwed securely” problem [emoji3] I’m not sure what you used for the 75mm... I’m having problems visualizing it, because it doesn’t have shoulder.... but I’m guessing you used tape [emoji3] Ordered...
by joeman
Thu Sep 20, 2018 1:11 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Going over the finer details regarding the Nose Cone, Coupler and SwitchBand. - Coupler is Fibreglass - Nose Cone is 5:1 Von Karmen Nosecone - Switchband will be a piece of CF tube I've made. Special Design Requirements - Allowing use of a transmitter (telemetry, GPS) - Having adequate coupler lengt...
by joeman
Thu Sep 20, 2018 12:47 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Managed to glue the Engine Block in yesterday. Did the usual preparation of :- - Sanding the section of the air-frame with Grit 60 - Cleaning the sanded area, to remove the dust and grime. Below are some photos of tool I used to get epoxy in the air-frame, where I wanted it...and not anywhere else. ...
by joeman
Sun Sep 16, 2018 7:57 am
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Terrific Mat.

Much appreciated.

Yes, getting those Adaptors is supposed to be hard because one is making the thread IN the plastic if understand correctly.

Ok. On to it!

Cheers

Joe
by joeman
Sat Sep 15, 2018 11:55 am
Forum: Scratch Built
Topic: Steampunk 1
Replies: 35
Views: 1225

Re: Steampunk 1

Lovely rocket. Very artistic. Mind if I use 1 or 2 pics of your rocket for a presentation?
by joeman
Fri Sep 14, 2018 5:33 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Question: Can someone advise me how far the CTI adpator extends beyond the casing end in a 6G setup? I need this so I can more accurately place the engine block. The flange on the adapter sits flush on the rear closure. You should just be able to add the length from the flange up to the case length...
by joeman
Wed Sep 12, 2018 9:23 pm
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Yes, Intuition tells me it probably wouldn't buckle, but there is no harm in throwing a few numbers and see what comes out. Since it really is a composite of components, Steel, then Aluminum, then Steel + Aluminum, it is a little hard to know what Elasticity Modulus or Second moments of area to use....
by joeman
Wed Sep 12, 2018 10:22 am
Forum: Scratch Built
Topic: Joe Turner's 38mm Scratch-Build
Replies: 51
Views: 2655

Re: Joe Turner's 38mm Scratch-Build

Thanks Drew :) Ok... I'm starting to work out how to glue the engine block inside the air-frame. 1. I do not have a motor / motor liner 2. I have a Pro-6g case 3. I want to have the ability to put a Pro-6gXL case in at a later date 4. I have a few AeroPack Extensions 5. I will be using the CTI Adapt...
by joeman
Mon Sep 10, 2018 7:38 am
Forum: Australian Rocketry
Topic: Shipping DG to Thunda2
Replies: 4
Views: 217

Re: Shipping DG to Thunda2

Not this time :-) I hope to fly the rocket I'm building now.

I hope to get my L3 with the next rocket I build. (Likely to be Scratch-built).

All in good time.

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