Search found 3562 matches

by mark.f
Thu May 14, 2020 8:09 am
Forum: General How-To & Discussion
Topic: Canada prohibits spudguns over 20mm
Replies: 11
Views: 436

Re: Canada prohibits spudguns over 20mm

jackssmirkingrevenge wrote:
Thu May 14, 2020 4:57 am
The real question is what will become of my .223 stockpile without a Mini-14?
Shoulda stockpiled .308. :) I don't see anything in the new bill about something like a PTR-91 although I'm certainly no expert on Canada's firearms laws and it may have already been restricted/prohibited.
by mark.f
Wed May 13, 2020 1:58 pm
Forum: Pneumatic Cannons
Topic: Small pirate cannon
Replies: 2
Views: 124

Re: Small pirate cannon

Nice job, good to see some more of your youtube creations over here. Only criticism I really have is against the two DWV fittings you have on there. The bell reducers are the only ones I can see (you can tell because all the pressure rated fittings have longer spigots than the reducers' sockets), so...
by mark.f
Wed May 13, 2020 1:34 pm
Forum: Combustion Cannons
Topic: Potato Howitzer
Replies: 3
Views: 145

Re: Potato Howitzer

Nice! I'm very impressed by all the "errata" like the homemade scrap elevation adjustment and frame. I can tell a lot of persistence was required to get all of that to fit together, good job! Few suggestions: 1.) As far as the recoil springs, they probably won't do much with light projectiles like l...
by mark.f
Thu May 07, 2020 8:30 pm
Forum: General How-To & Discussion
Topic: Canada prohibits spudguns over 20mm
Replies: 11
Views: 436

Re: Canada prohibits spudguns over 20mm

SpudBlaster15 wrote:
Thu May 07, 2020 5:43 pm
It won't help much if at all with the crime problem when most of the crime guns are smuggled from the US.
My bad bro. :mrgreen:
by mark.f
Sun May 03, 2020 9:06 am
Forum: SpudFiles Discussion
Topic: GGDT and HGDT
Replies: 17
Views: 3797

Re: GGDT and HGDT

PCGUY wrote:
Fri Jan 03, 2020 1:57 pm
D_Hall, do you have any of the old documentation that went along with these? Or perhaps you or someone else is willing to help create some?
No need to reinvent the wheel indeed. :mrgreen:
https://web.archive.org/web/20190321135 ... index.html
by mark.f
Fri May 01, 2020 8:12 pm
Forum: General How-To & Discussion
Topic: Canada prohibits spudguns over 20mm
Replies: 11
Views: 436

Re: Canada prohibits spudguns over 20mm

Boooo. When did that happen?

Edit: did they bundle it with the assault weapons ban? I can't find anything.
by mark.f
Thu Apr 30, 2020 7:35 am
Forum: Hybrid Cannons
Topic: Cooking up a little something else...
Replies: 8
Views: 357

Re: Cooking up a little something else...

Moonbogg wrote:
Wed Apr 29, 2020 11:25 pm
However, what I am trying to avoid is running over the o-ring with any kind of holes to avoid shredding it over time
Good catch.
Moonbogg wrote:
Wed Apr 29, 2020 11:25 pm
I'm excited about this project. It has double the surface area for flow from the port as my last one
Even more surface area for lightweight discarding sabots. :mrgreen:
by mark.f
Wed Apr 29, 2020 1:05 pm
Forum: Hybrid Cannons
Topic: Cooking up a little something else...
Replies: 8
Views: 357

Re: Cooking up a little something else...

So, do you think that o-ring is likely to blow out? What kind of O-ring? I would think you could climb the durometer scale until you found something that stays put. EDIT: also something you could consider, but you would have to use a longer stroke for the piston to get the same flow and it would in...
by mark.f
Mon Apr 27, 2020 11:35 am
Forum: Combustion Cannons
Topic: New member... my baby, Big Red
Replies: 10
Views: 725

Re: New member... my baby, Big Red

"pure oxygen" and fuel? Maybe you noticed the vacuum pump hidden in the battery box that evacuates the chamber before filling it with "pure oxygen and fuel". I didn't notice much of anything since you just posted a video. ;) You sound pretty smart, we just tend to get nervous when people post pictu...
by mark.f
Sat Apr 25, 2020 6:14 am
Forum: Combustion Cannons
Topic: New member... my baby, Big Red
Replies: 10
Views: 725

Re: New member... my baby, Big Red

What's the construction? Using pure oxygen + fuel in plastic piping isn't a great idea. Maybe that's why you didn't actually fire the thing in the video.
by mark.f
Fri Apr 24, 2020 12:29 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Help with making a diy blowback system
Replies: 7
Views: 446

Re: Help with making a diy blowback system

also on the second link there is a pipe in the center of both the airtank and the barrel with the blowback, if i just put a straight tube going all the way to the blowback syatem would it still work? I think you're talking about the chamber. :mrgreen: Kind of important for most valves we tend to us...
by mark.f
Thu Apr 23, 2020 9:25 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Help with making a diy blowback system
Replies: 7
Views: 446

Re: Help with making a diy blowback system

Blowback is fairly simple to accomplish. Making it into something micro-uzi-sized is another story entirely. Take a look at here and here for some macro-scale versions.
P.S. welcome to spudfiles.
by mark.f
Thu Apr 23, 2020 8:59 am
Forum: Hybrid Cannons
Topic: Cooking up a little something else...
Replies: 8
Views: 357

Re: Cooking up a little something else...

A spark at either end gives about the same amount of runup distance, which is to say not much for a normal sized launcher. AFAIK multiple sparks would be even better by eliminating a lot of runup distance, as well as (slightly) improving performance. You can play around in HGDT though and it's not m...
by mark.f
Wed Apr 22, 2020 4:09 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2411
Views: 136928

Re: "In the world of spuds today"

I agree that those step-up boosters you linked are complete garbage. I used one on my last project and it just stopped working. I replaced with a small stun gun and so far it's been fine, but time will tell about its reliability of course. It's probably plummeting QC over time with demand. I rememb...
by mark.f
Wed Apr 22, 2020 12:49 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2411
Views: 136928

Re: "In the world of spuds today"

ITWOST: Things are starting to come together. This project has been majorly slow, but I can't really complain based on current circumstances, and having to wait for parts to come in gives me time to think. https://www.spudstalker.ninja/images/small/wip/DSC00272.JPG https://youtu.be/cD2nmXgALPg (yes,...