Search found 245 matches

by killerbanjo
Wed Nov 13, 2013 8:40 am
Forum: Pneumatic Cannons
Topic: Balanced QDV
Replies: 4
Views: 2371

Re: Balanced QDV

Thanks for the information, assuming what I have drawn is correct however does give it a downfall. On the old design it would snap open much quicker and also the magazine was completely sealed off before it shot, this way it is not delayed therefore air would be lost.

Image
by killerbanjo
Wed Nov 13, 2013 12:11 am
Forum: Pneumatic Cannons
Topic: Balanced QDV
Replies: 4
Views: 2371

Re: Balanced QDV

I have now revised my old design into a simpler one. The chamber is no long a jacket' to the valve which allows the balanced piston to be shortened reducing dead space, the piston was also thickened to increase weight (Hopefully slower fire rate) and decrease dead space. The Barrel is also part of t...
by killerbanjo
Tue Nov 12, 2013 10:50 pm
Forum: Pneumatic Cannons
Topic: High pressure compressor
Replies: 22
Views: 6512

Re: High pressure compressor

Hey man, would something like this not be easier? The large piston would be better off being almost balanced at first so it allows the front area to get to a reasonable pressure before compressing it but its an old drawing and I can't be bothered to edit it for now... Of course you would still need ...
by killerbanjo
Tue Nov 12, 2013 10:35 pm
Forum: Pneumatic Cannons
Topic: Balanced QDV
Replies: 4
Views: 2371

Balanced QDV

This can be done MUCH more efficiently but the same theory applies. Was checking my laptop and found this pic from a while ago and though I would upload it. The bolt needs revising to be effective and it might work better with a moving barrel to be honest... http://i.imgur.com/PXWZcHQ.png EDIT: Revi...
by killerbanjo
Tue Dec 11, 2012 2:38 pm
Forum: Off-Topic Hobbies
Topic: Knife Thread
Replies: 821
Views: 234712

omg thats so nice :D how do you do such a nice bevel on the blade!?
by killerbanjo
Mon Dec 10, 2012 5:33 pm
Forum: Off-Topic Hobbies
Topic: Knife Thread
Replies: 821
Views: 234712

I don't know how im going to heat treat it... I guess a blow torch to get it to heat,. ITs not super thick.
by killerbanjo
Mon Dec 10, 2012 5:19 pm
Forum: Off-Topic Hobbies
Topic: Knife Thread
Replies: 821
Views: 234712

Would also like to state that this was done by a hand file completely... My friend wanted his dremel back after i told him i was getting high carbon steel to make a knife... He said it would knacker the dremel xD. I did about an hour or less a week!
by killerbanjo
Mon Dec 10, 2012 2:26 pm
Forum: Off-Topic Hobbies
Topic: Knife Thread
Replies: 821
Views: 234712

Finally shaped a blade after about 8 months after i got some steel from jake xD

Image
by killerbanjo
Sun Dec 09, 2012 6:29 pm
Forum: General How-To & Discussion
Topic: How to: QEV/piston valve (explicit)
Replies: 12
Views: 10406

Nice video bud thanks for the upload!
by killerbanjo
Sun Dec 02, 2012 6:04 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1097
Views: 394719

I belive that is a loom, did you mean this? Image ;)
by killerbanjo
Sun Dec 02, 2012 2:31 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1097
Views: 394719

Whoo sexy! :D

Do you also mill jack?
by killerbanjo
Sat Dec 01, 2012 6:21 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1097
Views: 394719

Ok thanks for the help!
by killerbanjo
Sat Dec 01, 2012 6:09 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1097
Views: 394719

Cool, either of you guys in Europe or better england?
by killerbanjo
Sat Dec 01, 2012 5:31 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1097
Views: 394719

can people here machines steel? Sorry if its an obvius questions but im not too clued in, in machining :lol:
by killerbanjo
Wed Sep 12, 2012 10:52 am
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6637
Views: 1687412

I don't get the physics here. If you have 2 bar in an incompressible tube, why should this pressure reduce as you go deeper? Thinking about it your quite right... I think i would have to have a piston. EDIT: Boom http://www.instructables.com/id/Diving-Depth-Gauge/ Read your full post and you alread...