Search found 442 matches

by ogivemeahome
Sat Feb 03, 2018 9:21 am
Forum: I could use that
Topic: Rotary Tool on Special at Hobby King
Replies: 5
Views: 236

Re: Rotary Tool on Special at Hobby King

Had something similar a long time ago that died. The problem was the speed control. When you dialled down the speed, you also dialled down the power. Using a larger diam. cutter requires a lower speed but MORE power. You'd find the wheel would stall frequently (probably making the motor overheat and...
by ogivemeahome
Sat Jan 06, 2018 1:13 pm
Forum: I could use that
Topic: Anyone bought from "Small Parts and Bearings" in QLD before?
Replies: 3
Views: 172

Re: Anyone bought from "Small Parts and Bearings" in QLD before?

Have bought from them a few times - sometimes a long wait is involved. One article still hadn't arrived after months so I cancelled the order and was given a refund. I'd buy from them again.
by ogivemeahome
Sat Jan 06, 2018 1:10 pm
Forum: I could use that
Topic: Rotary Tool on Special at Hobby King
Replies: 5
Views: 236

Re: Rotary Tool on Special at Hobby King

Got one. (The postage was the same price as the article + had to change the plug so the real price is more like $40.)
Had it running - it works - but haven't done any cutting yet.
by ogivemeahome
Wed Oct 19, 2016 6:28 am
Forum: Scratch Built
Topic: "Buckshot". Seven cluster rocket!
Replies: 28
Views: 2162

Re: "Buckshot". Seven cluster rocket!

jhurst7 wrote:For the lead in the nose cone, where did you get the lead from and what was the density of that lead?

You can use fishing gear ("sinkers"). They can be hammered flat like a pancake if you're short on space.
Density of lead is 11325 kg/m^3
Encapsulate the lead if you can.
by ogivemeahome
Sat Sep 17, 2016 5:33 pm
Forum: Scratch Built
Topic: Gammatron - BT80, 29mm MMT
Replies: 19
Views: 2749

Re: Gammatron - BT80, 29mm MMT

Oh to have a CNC router! I could machine a cavity; put some expanding foam in it, lay it over the fin/aft transition, wait for the foam to form a fillet in-situ, take the cavity away, glass over the fillet. Something for future builds maybe. How about 3D printing a former instead? OK, so I've alrea...
by ogivemeahome
Mon Sep 12, 2016 4:50 pm
Forum: Electronics
Topic: Air Pressure Sensor
Replies: 8
Views: 1104

Re: Air Pressure Sensor

I'm a little concerned with potential weakening of the air-frame if I drill a hole in it; Though on reflection, I guess I could drill a small hole and put a little bit of glue around it to provide some additional strength. When you're drilling the holes, put something solid underneath the hole to d...
by ogivemeahome
Sun Aug 14, 2016 7:54 am
Forum: Low Powered Rocketry
Topic: Ejection Gas Collection Recovery System
Replies: 14
Views: 1657

Re: Ejection Gas Collection Recovery System

Jordz wrote:But, at least now i know it wont work haha.

Thomas Edison successfully tested 99 ways how not to make a light bulb. ;)
by ogivemeahome
Sun Jul 31, 2016 9:02 am
Forum: Low Powered Rocketry
Topic: LPR Rocket Launch Rods
Replies: 8
Views: 1160

Re: LPR Rocket Launch Rods

"Piano wire" is an option but needs to be cleaned and silicon sprayed regularly to prevent corrosion.
I've heard the suggestion of using rifle barrel cleaning rods (compact - they screw together) - haven't tried it though.
by ogivemeahome
Sun Jul 31, 2016 8:50 am
Forum: Rocketry Control Room
Topic: Space Industry & Sustainability for The long Future
Replies: 7
Views: 957

Re: Space Industry & Sustainability for The long Future

SpaceManMat wrote:Not entirely sure what the study actually is.

The amount of junk up there is becoming a serious problem. Perhaps it has something to do with tracking/eliminating the larger chunks?
by ogivemeahome
Sat Jul 16, 2016 8:28 am
Forum: Low Powered Rocketry
Topic: Ejection Gas Collection Recovery System
Replies: 14
Views: 1657

Re: Ejection Gas Collection Recovery System

When you compare 'chute to balloon; - the 'chute only has to be in the airflow to 'inflate' - a balloon wants to be smaller, thus the air in it will be compressed, thus there'll need to be more air - you may need something like a 'fly apart airframe' for the balloon to be released reliably? My think...
by ogivemeahome
Tue Jun 21, 2016 8:38 pm
Forum: How to's
Topic: Attaching shock cord to hollow nose cone
Replies: 10
Views: 1366

Re: Attaching shock cord to hollow nose cone

Carve a balsa plug that will fit snugly, 'key' the inside of the nose cone by scratching with a blade/course sandpaper on a stick, epoxy the plug in place, drill a hole through the nose cone/plug (sideways), insert a pin of some description (balsa, carbon fibre, hardwood dowel), fill and sand any ir...
by ogivemeahome
Sat Jun 18, 2016 6:41 pm
Forum: How to's
Topic: Canted nose cones
Replies: 8
Views: 1049

Re: Canted nose cones

OverTheTop wrote:Are you concerned with the strength of the part?

Just trying to be funny.
I have a 3D printed nose cone coated with epoxy (and talc - to make the sanding easier).
Yet to do a field test with it but I'm confident.
by ogivemeahome
Thu Jun 09, 2016 8:59 pm
Forum: How to's
Topic: Canted nose cones
Replies: 8
Views: 1049

Re: Canted nose cones

natty wrote:... making canted nose cones.
Has anyone got any ideas?


3D printing. Cover the print with f/g. What could go wrong? :?
by ogivemeahome
Mon May 30, 2016 9:05 pm
Forum: Scratch Built
Topic: Upscale "Tintin's Moon Rocket" - WWW2016
Replies: 48
Views: 4705

Re: Upscale "Tintin's Moon Rocket" - WWW2016

I still have a vivid memory of seeing the first Tin Tin rocket go up at a QRS launch. Awesome.
Please post video of the big brother version. :)

Go to advanced search