Search found 98 matches

by Xamllew
Thu Dec 10, 2020 1:36 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2453
Views: 222085

Re: "In the world of spuds today"

I think you just left it high and dry, did you get the material from some fake plastic trees? :D Interesting observations, the question is whether this air was already in the sealant or if it was forced in by the pressure. No cheapo stuff here, E600 adhesive, and car engine gasket makers. Both come...
by Xamllew
Mon Dec 07, 2020 11:00 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2453
Views: 222085

Re: "In the world of spuds today"

I made a simple pressure chamber to test various sealants at high pressure and something I've noticed is after some time at around 1000psi some of the rubbery sealant adhesives such as silicone get tons of tiny bubbles in them, are these bubbles the result of rapid depressurization of dissolved air ...
by Xamllew
Fri Nov 27, 2020 3:43 pm
Forum: Pneumatic Cannons
Topic: I'm back!
Replies: 37
Views: 4596

Re: I'm back!

I'm shooting 360 grain slugs at the moment. At 1800 psi it shoots clean through 2" plywood. No hesitation at all. At 3000 I feel like it could drop a grizzly bear. A chronograph is pretty high up on my list but currently I dont have any actual number for performance. Madness. Can't wait to see a vi...
by Xamllew
Wed Nov 25, 2020 11:05 am
Forum: Pneumatic Cannons
Topic: I'm back!
Replies: 37
Views: 4596

Re: I'm back!

That's very nice, I always like seeing rifled barrels on homemade airguns. Tell us about the performance.
by Xamllew
Thu Mar 19, 2020 3:31 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: .25 cal Umarex 1894 Conversion
Replies: 2
Views: 1847

Re: .25 cal Umarex 1894 Conversion

Very cool project! We have these at the shop and were just discussing how it would be the basis for something a bit more hardcore :D I guess the valve looks a bit like the one on airsoft revolvers? https://i.imgur.com/wYllAqL.jpg If so you might want to look into the possibility of opening up the f...
by Xamllew
Wed Mar 18, 2020 12:20 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: .25 cal Umarex 1894 Conversion
Replies: 2
Views: 1847

.25 cal Umarex 1894 Conversion

Imgur album below https://imgur.com/a/sEVcgje I picked up this fun .177 rifle last year. A handy little lever action and a decent plinker, but I actually primarily wanted it for the mechanism which imitates the real gun with shells that chamber and eject with a wonderful metallic ratcheting. I spend...
by Xamllew
Fri Mar 13, 2020 9:24 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Self contained airsoft, pump action.
Replies: 23
Views: 6839

Re: Self contained airsoft, pump action.

Neat idea to have the cylinder compress forward instead of back, I've seen this in Nerf guns but never an airsoft. Seems like it would be good for a compact bullpup as you seem to have.
by Xamllew
Fri Mar 13, 2020 5:09 pm
Forum: Ammo & Parts
Topic: Perfect Brass Barrel for 1/4" Slingshot Ammo
Replies: 2
Views: 1952

Re: Perfect Brass Barrel for 1/4" Slingshot Ammo

farcticox1 wrote:
Fri Mar 13, 2020 4:08 am
That's not too tight is it ? 0.249 ID
Nope. It's a very airtight fit, but a bearing can still drop through under gravity alone. Very close tolerences.
by Xamllew
Fri Mar 13, 2020 12:46 am
Forum: Ammo & Parts
Topic: Perfect Brass Barrel for 1/4" Slingshot Ammo
Replies: 2
Views: 1952

Perfect Brass Barrel for 1/4" Slingshot Ammo

Just wanted to share a valuable resource with any others out there looking for a good tightbore barrel. McMaster Carr have these in stock
https://www.mcmaster.com/8950k552

Just need to de-burr the cut ends with a fine grit sandpaper when it arrives.

Thanks to Farcticox for finding this.
by Xamllew
Thu Mar 12, 2020 7:57 pm
Forum: Ammo & Parts
Topic: Airsoft/ 1/4 ball bearings
Replies: 5
Views: 5373

Re: Airsoft/ 1/4 ball bearings

farcticox1 wrote:
Thu Feb 13, 2020 4:56 am
McMaster Carr have this in brass https://www.mcmaster.com/8950k552
Just wanted to say I went ahead and ordered a piece of this and is an excellent airtight fit for store bought 1/4" slingshot ball ammo, airsoft barrel wall thickness, arrived un-bent too. Good find!
20200312_195844.jpg
by Xamllew
Sat Mar 07, 2020 9:40 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2453
Views: 222085

Re: "In the world of spuds today"

Bought one of the Nerf Rival pistols for my nephew, ended up basically stealing it back because it's fun to plink cans with and the action is pretty cool.
by Xamllew
Thu Mar 05, 2020 12:47 pm
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1492
Views: 154616

Re: Short question topic

@JRRDW, could you explain what you mean by air getting around the projectile and slowing it down? What I had in mind was a barrel diameter that narrows by less than a millimeter, going from decently airtight, to requiring a few tamps with a ramrod to fully seat. If the projectile is air tight from ...
by Xamllew
Thu Mar 05, 2020 12:34 pm
Forum: Pneumatic Cannons
Topic: I found a gatling cannon
Replies: 3
Views: 2006

Re: I found a gatling cannon

Pretty impressed with how well that thing fed and ejected those shells.
by Xamllew
Wed Mar 04, 2020 11:44 am
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1492
Views: 154616

Re: Short question topic

jackssmirkingrevenge wrote:
Wed Mar 04, 2020 11:40 am
Xamllew wrote:
Tue Mar 03, 2020 4:33 pm
I had a similar idea for a valveless, except using a mechanism like a Quick Disconnect air hose fitting to lock the projectile in place.
Something like that:

Image
Exactly. Did you ever get a working prototype built?
by Xamllew
Tue Mar 03, 2020 4:33 pm
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1492
Views: 154616

Re: Short question topic

@JRRDW, could you explain what you mean by air getting around the projectile and slowing it down? What I had in mind was a barrel diameter that narrows by less than a millimeter, going from decently airtight, to requiring a few tamps with a ramrod to fully seat. This should almost act like a burst d...