Search found 3605 matches

by mark.f
Sun Sep 19, 2021 6:23 am
Forum: Hybrid Cannons
Topic: Spark Rail
Replies: 1
Views: 657

Re: Spark Rail

When you say three-point igniter do you mean it has three terminals? Also can we get some pictures or a diagram of what you have? It could be a lot of things but these are usually simple. :p
by mark.f
Thu Sep 16, 2021 7:01 am
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2457
Views: 257212

Re: "In the world of spuds today"

joergsprave v.2 incoming. :mrgreen:
by mark.f
Thu Sep 16, 2021 6:54 am
Forum: Ammo & Parts
Topic: Finding copper pipe parts
Replies: 4
Views: 792

Re: Finding copper pipe parts

Yep, copper is pretty expensive. Places like McMaster rarely have the best prices but it'll take some legwork to find anything larger than 1" locally.

What type of cannon is it?
by mark.f
Wed Sep 15, 2021 9:13 am
Forum: Ammo & Parts
Topic: What caliber ammo is most available In 2021?
Replies: 3
Views: 849

Re: What caliber ammo is most available In 2021?

I would say red chef caliber is more available at my local supplier than russet.
by mark.f
Sat Aug 28, 2021 12:27 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Victorian "Air Cane" brought back to life
Replies: 26
Views: 4203

Re: Victorian "Air Cane" brought back to life

jackssmirkingrevenge wrote:
Thu Aug 19, 2021 11:32 am
KeyMod
Quad rails god rails. :mrgreen:
by mark.f
Wed Aug 04, 2021 2:24 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: What battery would work on this solinoid?
Replies: 2
Views: 456

Re: What battery would work on this solinoid?

It looks like he's using 3 18650's in series so I would go ahead and wager most 3S RC batteries could do the job.
by mark.f
Fri Jul 23, 2021 6:27 am
Forum: Pneumatic Cannons
Topic: Rate my cannon
Replies: 11
Views: 1024

Re: Rate my cannon

Interesting, just out of curiosity, have you thought about modifying the angle seat valve to be outlet-sealing like this? (He made it out of a wye strainer though).
by mark.f
Tue Jul 20, 2021 8:42 am
Forum: Pneumatic Cannons
Topic: Rate my cannon
Replies: 11
Views: 1024

Re: Rate my cannon

rookie builder wrote:
Sun Jul 18, 2021 8:52 pm
What is a balance tap?
It's just lead connected between the two cells for your charger to connect to to keep the voltages equal when charging (and discharging too if you use a battery management system, homemade or otherwise).
by mark.f
Mon Jul 19, 2021 3:13 pm
Forum: Pneumatic Cannons
Topic: Paintball Artillery Gun
Replies: 11
Views: 1619

Re: Paintball Artillery Gun

It might be worth giving this a read, or at least a quick skim: FM 3-22.90.
Not too familiar with mortars myself, as the only time I got to watch a team they fired a total of two flares. :P
by mark.f
Sun Jul 18, 2021 7:52 pm
Forum: Pneumatic Cannons
Topic: Rate my cannon
Replies: 11
Views: 1024

Re: Rate my cannon

Neat valve. I'd like some more details but I'm with @farticox1, that's a lot of pressure for PVC.
But even with all of that, I think what would worry me more is if there was no balance tap on that battery pack you wired up. :D
by mark.f
Wed Jul 07, 2021 8:22 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: My first Cool Wall
Replies: 3
Views: 574

Re: My first Cool Wall

Weaponize the water heater.
In other news dope wall. :D
by mark.f
Tue Jul 06, 2021 7:55 pm
Forum: General How-To & Discussion
Topic: Hacksmith of potato guns?
Replies: 6
Views: 793

Re: Hacksmith of potato guns?

there are only a few designs I could do without a decent shop That's where I think you could set yourself apart. There's tons of channels like hacksmith where the dudes 3d print entire builds and send off for some PCB's for the electronics. I'd personally watch the shit out of a channel with a JSR-...
by mark.f
Tue Jul 06, 2021 11:41 am
Forum: General How-To & Discussion
Topic: Hacksmith of potato guns?
Replies: 6
Views: 793

Re: Hacksmith of potato guns?

I think it's a little too focused but there's definitely a niche that could be filled. For instance, searching for hybrid cannons brings up minecraft videos and MrCrowley's. :p Just starting out you'll probably have to mix-in "theory" and "build progress" videos since it's a little ambitious to buil...
by mark.f
Tue Jun 29, 2021 6:23 pm
Forum: Pneumatic Cannons
Topic: Tennis ball launcher
Replies: 3
Views: 629

Re: Tennis ball launcher

I think it will too. For whatever it's worth, I say mount the barrel with the seam at the top and pray for a backspin. :D
by mark.f
Mon Jun 28, 2021 5:17 am
Forum: Hybrid Cannons
Topic: Hybrid Piston Pilot Air Ratio
Replies: 18
Views: 1703

Re: Hybrid Piston Pilot Air Ratio

Ah, so you're using a chamber/outlet sealing design. That makes more sense. So are you trying to find the right sized piston so that you can use equal (before ignition) chamber and pilot pressures and still get opening at an optimal (higher) pressure? If so you could probably play around with GasEq ...