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 35 users online :: 4 registered, 0 hidden and 31 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Heating and twisting PVC pressure pipe help

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

Heating and twisting PVC pressure pipe help

Unread postAuthor: Marco321 » Sat May 19, 2007 8:04 pm

Hey
I did some searching and only found heating and bending pvc pressure pipe. My research on the website only showed bending the pipe and im twisting it.
My question is:
When i made my pneumatic gun i used two 90 degree elbows with some pvc pressure pipe between them. I did the elbows a little skew and was wondering if heating with the heat gun and twisting the pvc pipe streight (only about 5 degrees clockwise) will damage the PVC pipe in any way.
Thanks
Marco
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Re: Heating and twisting PVC pressure pipe help

Unread postAuthor: Velocity » Sat May 19, 2007 8:06 pm

Marco321 wrote:Hey
I did some searching and only found heating and bending pvc pressure pipe. My research on the website only showed bending the pipe and im twisting it.
My question is:
When i made my pneumatic gun i used two 90 degree elbows with some pvc pressure pipe between them. I did the elbows a little skew and was wondering if heating with the heat gun and twisting the pvc pipe streight (only about 5 degrees clockwise) will damage the PVC pipe in any way.
Thanks
Marco


I would not feel safe doing this... it could create weak spots which would be prone to failure... especially because it is a 90 degree bend rather than a straight section.
  • 0

User avatar
Velocity
Brigadier General
Brigadier General
 
Posts: 1039
Joined: Tue Feb 07, 2006 5:42 pm
Reputation: 0

Unread postAuthor: hi » Sat May 19, 2007 8:08 pm

on a simple combustion i would say it was ok, but still kinda stupid.
on a pneumatic i would say that you should call the hospital and say that you will be coming in in a few hour and that you just wanted to give them a heads up.

I.E.- dont do it, just get the proper fittings.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: Marco321 » Sat May 19, 2007 8:14 pm

Im not heating it and benging it 90 degrees, im heating it and stwisting the pipe a little. The pipe is still streight
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: hi » Sat May 19, 2007 8:19 pm

its still not smart on a pneumatic.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: Marco321 » Sat May 19, 2007 8:24 pm

Oh ok, why not? i didnt heat it enough to melt it, it was still touchable easily, and i only twisted it a little. I also thought pvc was a thermal plastic.
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: hi » Sat May 19, 2007 8:28 pm

all im saying is that i personally wouldnt do it. if its the barrel then its fine, but the chamber its not such a good idea simply because if you bend it that means that you are streching the plastic on one side and smushing it together on ther other. i know its not a whole lot, but it will weeken it a little and i just dont think its the best idea in the world thats all.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Marco321 » Sat May 19, 2007 8:33 pm

Im not bending it, im twisting it, so it should not be smushing it on one side and stretching it on the other side, just twisting it anbout 5 degrees. I also just had a google search and there are machines and stuff for bending pvc pipes and they all don't say anything about dangers, unless thats only for pipes not under pressure.
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: mopherman » Sat May 19, 2007 8:34 pm

An easy altearnative would be chopping off the elbows and replacing them with street elbows. Then you can twist and turn them any way you like.
  • 0

User avatar
mopherman
Brigadier General
Brigadier General
 
Posts: 788
Joined: Sat Feb 03, 2007 8:20 pm
Reputation: 0

Unread postAuthor: Marco321 » Sat May 19, 2007 8:38 pm

I have the elbow fittings on it and everything, its just the pipe connecting the 2 elbow fittings which i had to twist so the barrel and the chamber where parallel, i twisted the pipe about 5 degrees across its cylindrical surface
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: frankrede » Sat May 19, 2007 8:38 pm

Go out and try it.
Do it remotely
  • 0

Current project: Afghanistan deployment
User avatar
frankrede
Lieutenant General
Lieutenant General
 
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Reputation: 0

Unread postAuthor: Marco321 » Sat May 19, 2007 8:43 pm

Iv already done it, i did it because i couldn't see any reason not to. I haven't shot it yet because i thought i should ask you all here. Its a ball valve so i cant do it remotely. But what im asking is does heating pvc damage it? I don't think it does because its a thermal plastic. I also didn't put any bends in it, just a twist. The tube i twisted is about the width of an average mans hand.
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: Kenny_McCormic » Sat May 19, 2007 9:40 pm

it doesnt matter reforming the pipe WILL weaken it personally i think ur nuts which would you rather do spend $5 and chop off the fittings and try again OR pay thosands of dollars to get all the pvc shcpnel removed form ur body?
  • 0


Kenny_McCormic
1st Lieutenant
1st Lieutenant
 
Posts: 283
Joined: Wed Jan 03, 2007 8:59 pm
Reputation: 0

Unread postAuthor: Marco321 » Sat May 19, 2007 10:06 pm

Ok
How do i remove the pipe?
  • 0

User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: sjog » Sat May 19, 2007 10:25 pm

  • 0


sjog
Donating Member
Donating Member
 
Posts: 440
Joined: Sun Oct 15, 2006 9:43 pm
Location: Marthas Vineyard
Reputation: 0

Next

Return to General Spud Cannon Related

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Yahoo [Bot]

Reputation System ©'