Search found 756 matches

by mobile chernobyl
Mon Jun 27, 2016 10:24 am
Forum: General How-To & Discussion
Topic: Frisbee launcher
Replies: 7
Views: 4408

Re: Frisbee launcher

The clay pigeon setup usually imparts spin from the arm - As the arm rotates, the frisbee/pigeon will move outwards along it from the centrifugal force. The arms usually have a little rubber U-shaped channel that the outer edge of the disc can maintain contact with. This is how the disc starts spinn...
by mobile chernobyl
Wed Jun 22, 2016 10:33 pm
Forum: Off-Topic Hobbies
Topic: Anybody else going to IREC next week?
Replies: 3
Views: 3497

Re: Anybody else going to IREC next week?

Nice pictures! Any interesting CATO's or were they mostly all succseful launches? Looks like one in there possibly late stage.

Any interesting rocket chemistries? See some interesting colors in some of the pictures
by mobile chernobyl
Tue Jun 14, 2016 8:52 pm
Forum: General How-To & Discussion
Topic: Frisbee launcher
Replies: 7
Views: 4408

Re: Frisbee launcher

This guy has made a pneumatic clay pigeon launcher - you can probably abstract an idea from his basic mechanism:
by mobile chernobyl
Tue Jun 14, 2016 8:49 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: BFG #7
Replies: 57
Views: 25393

Re: Semi automatic ideas?

Check out the 'Autococker' paintball mechanism:
http://www.zdspb.com/media/tech/animati ... er_wgp.gif

Tons of other paintball based semi-automatic ideas here:
http://www.zdspb.com/tech/misc/animations.html
by mobile chernobyl
Thu May 19, 2016 10:20 am
Forum: General How-To & Discussion
Topic: Is spudding dead?
Replies: 119
Views: 287115

Re: Is spudding dead?

...You could make this site a whole lot more popular by having step by step tutorials on the front page with immediate results... I think there was one time in this site's history that they tried to promote posts from the build log - sort of make a different project a 'featured' one every week. Spu...
by mobile chernobyl
Mon Apr 25, 2016 10:38 pm
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6637
Views: 1630049

Re: "Offtopic-posts-topic" NSFW

Nice work!

Got a close up of that rear disc mount? And I'm guessing you had to get a disc compatible rear wheel (hub)?

I always wanted to build a cool steel framed city beater bike - they're pretty common now but weren't always haha.
by mobile chernobyl
Tue Mar 01, 2016 4:03 pm
Forum: Combustion Cannons
Topic: Noise cannon for RC planes
Replies: 162
Views: 74639

Re: Noise cannon for RC planes

Just noticed this thread pop up to the main page again - all I can say is WOW! Great progress! Love seeing more work done in the field of detonations! :D :D Good luck in your future ventures - Do you have a picture of how the noise maker is installed in/on the RC plane? And what is your theory/hypot...
by mobile chernobyl
Fri Jan 15, 2016 6:32 pm
Forum: Hybrid Cannons
Topic: Automatic Piston Hybrid Cannon Design
Replies: 27
Views: 16958

Re: Automatic Piston Hybrid Cannon Design

What you are describing is precisely the conclusion Utron came to - and if you view the Defense document below - you can see their solution!

(It will automatically start downloading a pdf file when you click it - it's worth a thorough read through!)

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA462130
by mobile chernobyl
Fri Oct 30, 2015 1:28 pm
Forum: Combustion Cannons
Topic: Noise cannon for RC planes
Replies: 162
Views: 74639

Re: Noise cannon for RC planes

Futterama wrote:Hi Shyasuna!

"it seems like your tube is shorter and bigger in diameter than mine."
That is interesting :lol:
by mobile chernobyl
Thu Oct 29, 2015 1:17 pm
Forum: General How-To & Discussion
Topic: Modeling software for CNC (Mach3)
Replies: 8
Views: 5997

Re: Modeling software for CNC (Mach3)

Mastercam, however you choose to obtain it, is very friendly with SolidWorks. I've used the two together for CNC Lathe, Mill and EDM (no... not the music lol). And I don't consider myself an expert by any means - it's just a reallllly good tool path program that ties into SolidWorks really well and ...
by mobile chernobyl
Mon Oct 26, 2015 10:19 pm
Forum: Pneumatic Cannons
Topic: Japan Made Pneumatic Cannon "Exhaust Cannon"
Replies: 11
Views: 8997

Re: Japan Made Pneumatic Cannon "Exhaust Cannon"

Shyasuna -

Toolie I believe is just the name of a person - as you may have found. Here on spudfiles, it is a small community, so new discoveries tend to be named after those that first introduced them to the spudfiles community.
by mobile chernobyl
Mon Oct 26, 2015 11:06 am
Forum: Pneumatic Cannons
Topic: Japan Made Pneumatic Cannon "Exhaust Cannon"
Replies: 11
Views: 8997

Re: Japan Made Pneumatic Cannon "Exhaust Cannon"

Shyasuna - Thank you for joining! Your work is amazing, and the level of quality is as well. I love the quality of the drawing you posted above as well - looks like a very well designed and thought-out iteration of a Toolie valve - http://www.spudfiles.com/spud_wiki/index.php?title=Toolies_Piston_Va...
by mobile chernobyl
Thu Oct 22, 2015 4:48 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2461
Views: 1785457

Re: "In the world of spuds today"

ITWOST,

I stumbled across this guy's YouTube Channel...

https://www.youtube.com/channel/UCZPyWR ... 4q6Ek3NrhQ

Anyone seen his work before or know who he is? Seems like some interesting creations and a good bit of professional level machining involved (at a university I'm assuming?)
by mobile chernobyl
Thu Oct 22, 2015 4:43 pm
Forum: Combustion Cannons
Topic: Noise cannon for RC planes
Replies: 162
Views: 74639

Re: Noise cannon for RC planes

Another property of mixed gases you may want to explore is detonation - something that will surely make noise and not require a rupture disc to do so. Typically detonations are not something we spudders want - but it is a commonly used effect of rapid burning gasses that is employed everywhere from ...
by mobile chernobyl
Tue Oct 20, 2015 12:25 pm
Forum: Combustion Cannons
Topic: Noise cannon for RC planes
Replies: 162
Views: 74639

Re: Noise cannon for RC planes

How many noise shots are you looking to produce per flying session? You may be over complicating it by trying to do a repeating design - which albeit cool - may be overkill. If you're trying to simulate high repetition main gun fire - I can understand the desire for repeatability though! I'm thinkin...