Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 70 users online :: 4 registered, 0 hidden and 66 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Valveless launcher

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Unread postAuthor: dewey-1 » Fri Aug 06, 2010 7:06 am

jackssmirkingrevenge wrote:oooh oooh I has tube benders!


Image

The set is 7, 6, 5 4 and 3mm diameter. Length is 110mm, so it's not going to be useful for a spiral tube,


That should not pose any problems! Just slide the "bender" on the tube as you progress on its length.

Another option is to slide the preformed spiral tube onto the proper sized tubular shape to prevent kinking and then proceed with the above stated step.

Hopefully this is cleary understood. If not, I can clarify it more! :)
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Aug 06, 2010 7:34 am

POLAND_SPUD wrote:Why bother with epoxy?


if I can only bend short sections...

You probably need to cut holes in the tubing at the detent


Yes, as previously discussed.

dewey-1 wrote:That should not pose any problems! Just slide the "bender" on the tube as you progress on its length.

Another option is to slide the preformed spiral tube onto the proper sized tubular shape to prevent kinking and then proceed with the above stated step.

Hopefully this is cleary understood. If not, I can clarify it more!


Can you see the flared ends? You can't really slide it up the tube... unless there's something I'm not getting.

Here's a fanciful idea of what I would have in mind as a finished project, something like the Magpul PDR:
  • 0

Attachments
hpadetentbullpup.gif
hpadetentbullpup.gif (9.94 KiB) Viewed 577 times
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: dewey-1 » Fri Aug 06, 2010 7:56 am

The flared end of the bender has to be facing toward the staight side of the tube, not on the formed end.

I would make a drawing but it would take to much time.
If I had exact dimensions of benders and the radius of how tight the bender can be wound, I could create a real model.
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Aug 06, 2010 8:39 am

Image

I thought they were meant to go on the inside :roll:
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: dewey-1 » Fri Aug 06, 2010 8:57 am

Yes I had a DAA on that statement! (DAA = dumb ass attack)

I was thinking external rather than internal!
Senility must be setting in!
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Aug 06, 2010 9:47 am

No no you were right, they *are* meant to be used externally!

The problem now is that the largest one is for 3/16" O/D, and the pipe I wanted to use them for is 1/4" O/D :cry:
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: dewey-1 » Fri Aug 06, 2010 10:17 am

Well, does that mean I only had 1/2 of a DAA?

Here is a how to link:

http://www.diydata.com/techniques/plumbing/bending.php
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Ragnarok » Fri Aug 06, 2010 10:20 am

jackssmirkingrevenge wrote:The problem now is that the largest one is for 3/16" O/D

Wait - 7mm is more than 1/4". If there's supposed to be a 7mm one in the set... ?
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: jackssmirkingrevenge » Fri Aug 06, 2010 10:30 am

The DAA was purely mine when I ordered them :-/

Ragnarok wrote:Wait - 7mm is more than 1/4". If there's supposed to be a 7mm one in the set... ?


I said 7mm measuring the o/d of the spring assuming they were internal ones :roll:

According to Duane's (useful, cheers!) link, internal ones are tapered and have eyes for being pulled through, which makes perfect sense.

Ah well, I wil lcertainly find a use for these, just have to but bigger ones.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: budabob07 » Sat Nov 13, 2010 5:30 pm

just wondering, what 3-way valve are you using? cool design btw
  • 0


budabob07
Specialist
Specialist
 
Posts: 43
Joined: Thu Nov 11, 2010 5:38 pm
Reputation: 0

Unread postAuthor: POLAND_SPUD » Sat Nov 13, 2010 5:46 pm

the largest one in the pic on the 2nd page... sorry but I had to delete the vids a few days ago
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: budabob07 » Sat Nov 13, 2010 8:26 pm

thanks, but do you know what the model is and how much it costs? Im looking for one for a semi-auto QEV gun, and cant find a cheap one
  • 0


budabob07
Specialist
Specialist
 
Posts: 43
Joined: Thu Nov 11, 2010 5:38 pm
Reputation: 0

Unread postAuthor: POLAND_SPUD » Sat Nov 13, 2010 9:06 pm

I got all of them for 4$ :D (yeah I know I told it at least 400 times)
try ebay - if you're lucky you can find them for a couple of bucks

what the model is

99% of valves have a symbol and something written on them. Zoom in the pic and google everything you think might be the part number

The symbols are also very important - read this boring thread -> http://www.spudfiles.com/forums/directi ... 20438.html

how much it costs
70 euro (IIRC)
though you can get them a lot cheaper off ebay if you're lucky and persistent
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Previous

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'