Search found 74 matches

by ToasT
Thu Feb 18, 2016 3:24 am
Forum: Pneumatic Cannons
Topic: full size football
Replies: 6
Views: 3311

Re: full size football

AlfiePB IanB wrote:There is a combustion cannon firing a soccer ball on YouTube
[youtube][/youtube]

skip to 2:30
by ToasT
Fri Feb 05, 2016 11:46 pm
Forum: Off-Topic Hobbies
Topic: Possible AC Scroll Compressor Conversion?
Replies: 9
Views: 5222

Re: Possible AC Scroll Compressor Conversion?

If you find the spec sheet for the compressor it will say if it needs a start or a run capacitor. If running for a long time on a wrong sized run capacitor I think you run the risk of burning out the windings.
by ToasT
Sun Jan 31, 2016 7:23 pm
Forum: Off-Topic Hobbies
Topic: Possible AC Scroll Compressor Conversion?
Replies: 9
Views: 5222

Re: Possible AC Scroll Compressor Conversion?

I think the ratio of scroll vs reciprocating compressors comes down to number of fridges vs number of heat-pump/air con units. Scrolls are used in heat-pumps/air-conditioning units where the temperatures don't need to be dropped as far in refrigerators. Refrigerators use reciprocating piston compres...
by ToasT
Sat Jan 16, 2016 5:40 am
Forum: Hybrid Cannons
Topic: Propane Sensor Fuel Metering
Replies: 3
Views: 5134

Re: Propane Sensor Fuel Metering

I had thought about making an electronic fuelling device, using a pressure transducer and a meter pipe. Could be further automated with solenoid valves, but how close do you want your flammable gasses to your electricity? Further ideas I had; The mix number can be controlled with a dial (rotary enco...
by ToasT
Sun Dec 20, 2015 6:35 pm
Forum: Off-Topic Hobbies
Topic: Drone?
Replies: 6
Views: 3707

Re: Drone?

Put one of these on it. [youtube]https://youtu.be/wqlptPhFmk0[/youtube] you can buy a very low resolution version from sparkfun. a board that connects the ESCs and battery (I think? Dunno the name of it), radio control and receiver. I think I need something else, like the APM 2.6 you spoke Pretty su...
by ToasT
Thu Dec 17, 2015 1:48 am
Forum: Off-Topic Hobbies
Topic: Drone?
Replies: 6
Views: 3707

Re: Drone?

It depends how you define build yourself. I recommend against starting from etching your own PCBs haha. Or even programming the control systems. I have been wanting to build one for about a year now. On the team black sheep website there are some pdf documents that have lots of info, shows something...
by ToasT
Mon Oct 26, 2015 7:24 am
Forum: Pneumatic Cannons
Topic: Japan Made Pneumatic Cannon "Exhaust Cannon"
Replies: 11
Views: 8116

Re: Japan Made Pneumatic Cannon "Exhaust Cannon"

Its all so nice and professional, well done. A shame about your laws regarding projectiles.
by ToasT
Mon Oct 26, 2015 7:17 am
Forum: Pneumatic Cannons
Topic: New Member - First Cannon - 2 inch L copper
Replies: 6
Views: 3445

Re: New Member - First Cannon - 2 inch L copper

I guess that asks an interesting question;
What is the most expensive 'home' cannon on this site? ('home' excludes the likes of VERA...)
by ToasT
Sat Oct 24, 2015 5:25 am
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2461
Views: 1461053

Re: "In the world of spuds today"

Has some info on his page about it;
http://www.uzmlab.com/exhaustcannon/advance/trigger
by ToasT
Thu Oct 15, 2015 2:43 am
Forum: Pneumatic Cannons
Topic: New Member - First Cannon - 2 inch L copper
Replies: 6
Views: 3445

Re: New Member - First Cannon - 2 inch L copper

Great first post! A healthy sized, well thought out cannon. Good job.
by ToasT
Thu Sep 24, 2015 5:16 am
Forum: Combustion Cannons
Topic: fuel question H2 O2 or Hair spray
Replies: 11
Views: 5987

Re: fuel question H2 O2 or Hair spray

Is this to be used in New Zealand? If yes: In New Zealand a firearm is defined in the 1983 arms act as " anything from which any shot, bullet, missile, or other projectile can be discharged by force of explosive [/b][/u]" So this would include anything homemade. It is my understanding that to own an...
by ToasT
Sat Sep 19, 2015 5:22 am
Forum: Pneumatic Cannons
Topic: Gas strut hand pump idea
Replies: 6
Views: 2333

Re: Gas strut hand pump idea

There is this example from ookook.
I have been wanting to experiment with this, however I pretty much have a limitless and virtually free supply of fridge compressors and the gas strut option was pretty expensive from my initial research. (once shipping was included)
by ToasT
Tue Sep 15, 2015 4:53 am
Forum: Hybrid Cannons
Topic: Update: Golf Ball Piston-Valved Hybrid (LRCH-200)
Replies: 42
Views: 16362

Re: Update: Golf Ball Piston-Valved Hybrid (LRCH-200)

October isn't so far away at least. Given the speed at which my projects come along at, this is nowhere near enough time to do anything. I'll blame work...
What pressure were you testing too?
by ToasT
Mon Aug 24, 2015 4:40 am
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6637
Views: 1353037

Re: "Offtopic-posts-topic" NSFW

That's a different design to one I made a few years back from cans. I drilled way to many holes for the flames. You know, teenage mentality, 'MORE IS BETTER!!!'

Turns out it wasn't.

How much fuel was left once the pot was boiling?
by ToasT
Tue Aug 18, 2015 4:08 am
Forum: Hybrid Cannons
Topic: Update: Golf Ball Piston-Valved Hybrid (LRCH-200)
Replies: 42
Views: 16362

Re: Update: Golf Ball Piston-Valved Hybrid (LRCH-200)

Sounding good. Are you an engineer by any chance? The naming and lingo would suggest so :P .