TPMS bomb DIY. So easy even a child can do it!

agoodcar · 10-09-2013, 10:23 PM

this is one happy kid!

Rusty · 10-10-2013, 09:25 AM

I've done this with my truck sensors. Problem I have is after about week and a half. I have to put more air into it as it leaks out through the plastic pipe it self. Ended up using metal pipe. Food for thought.

SurfDog · 10-10-2013, 09:33 AM

Quote:

Originally Posted by Rusty

I've done this with my truck sensors. Problem I have is after about week and a half. I have to put more air into it as it leaks out through the plastic pipe it self. Ended up using metal pipe. Food for thought.

Thanks! I did not think of that!

I am going to plastidip inside of the PVC to "Seal" it!

SouthArk370Z · 10-10-2013, 10:33 AM

Quote:

Originally Posted by Rusty

I've done this with my truck sensors. Problem I have is after about week and a half. I have to put more air into it as it leaks out through the plastic pipe it self. Ended up using metal pipe. Food for thought.

PVC is not very gas permeable. I suspect you had a leaky Schrader valve, threads, joints, &c.

osbornsm · 10-10-2013, 12:40 PM

Quote:

Originally Posted by SouthArk370Z

PVC is not very gas permeable. I suspect you had a leaky Schrader valve, threads, joints, &c.

Jeez, making pipe bombs for TPMS? Seems a bit overkill (pun intended)

Rusty · 10-10-2013, 04:06 PM

Quote:

Originally Posted by SouthArk370Z

PVC is not very gas permeable. I suspect you had a leaky Schrader valve, threads, joints, &c.

That depends on the plastic used. At work, I've seen PVC hold hydrogen gas with no problems, then seen it leak through the wall of the PVC using plant air. Go figure.

SouthArk370Z · 10-10-2013, 04:41 PM

Quote:

Originally Posted by Rusty

That depends on the plastic used. At work, I've seen PVC hold hydrogen gas with no problems, then seen it leak through the wall of the PVC using plant air. Go figure.

One is likely to run into only two grades of PVC pipe at the local hardware store: building grade and piping grade. As far as gas permeability goes, there's not much difference between the two. Both are pretty much airtight when put together properly. If it will hold Hydrogen (I have my doubts but will take your word for it), it will hold anything you or I are likely to put in it.

FWIW, I would consider PVC pipe to be a very poor choice of materials to use in a car. It becomes brittle when cold and soft when warm (max working temperature is only 140F for building grade PVC). If one must use PVC, the method that uses two large caps looks like it would be the strongest.

10-10-2013, 09:25 AM	#2 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,575 Drives: 2011 Nismo GM 6M Rep Power: 2684440	I've done this with my truck sensors. Problem I have is after about week and a half. I have to put more air into it as it leaks out through the plastic pipe it self. Ended up using metal pipe. Food for thought. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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10-09-2013, 10:23 PM	#1 (permalink)
agoodcar Base Member Join Date: Aug 2013 Location: chicago, IL Posts: 13 Drives: 370z touring Rep Power: 13	this is one happy kid!