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Pvc chamber heating system?

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Pvc chamber heating system?

Unread postAuthor: Demon » Wed Oct 29, 2008 7:10 pm

I really need to make it(i live in canada):

My chamber is 2 inch x 12" ant it is pneumatic.

I will "wrap" it with 1/4 inch pressure rated hose and put on it a coat piece to keep it warm, the only problem is how will i make move the hot water trough the 1/4 inch pressure rated hose and how to heat it?

I will only need to keep the temperature to approx. 20 celsius degrees

Maybe heat the water with an electric wire system activated with a control button and a battery( i already have 20 volts rechargeable battery).

But how make the water move trough it?

I need your help because i just finished my spudgun and dont wanna wait 6 months to really shot outside without getting in at each time.

And please...only helpful reply...


New PICTURE:(what i wanna do)
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Last edited by Demon on Thu Oct 30, 2008 6:42 am, edited 1 time in total.
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Unread postAuthor: cowkiller » Wed Oct 29, 2008 7:25 pm

have you looked at computer parts i know hard core gamers use a radiator system with a water pump may be you can find one and just apply the heat to the exchanger
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Unread postAuthor: Demon » Wed Oct 29, 2008 7:28 pm

have you looked at computer parts i know hard core gamers use a radiator system with a water pump may be you can find one and just apply the heat to the exchanger


That is an really good idea, but how to heat it up?
(i will not post until tommorow, i have to go sleep :roll: )
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Unread postAuthor: cowkiller » Wed Oct 29, 2008 9:51 pm

to heat it up i can only think of like a electric coil from a eletric heater or a small fire and i do mean small you get to big it could go bad as in melting the exchanger or your gun FYI kansas is a good place to be not to cold in the winter for shooting
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Unread postAuthor: Lentamentalisk » Wed Oct 29, 2008 10:59 pm

well if you will be firing from near your house, you could just make a reservoir of hot water, straight out of the hot water tap, such as a 5 gallon bucket, wrapped in blankets or something like that.
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Unread postAuthor: starman » Thu Oct 30, 2008 4:03 am

You want to do what now? You're saying you want to build essentially a PVC water heater tank? And only "heat" the water up to 20 C? That's close to the temperature of water that comes out of the tap...maybe a little cooler than that in the winter.

Anyway, sounds a little weird...maybe you could use a light bulb protected by a glass or jar fitted in the "tank" somehow. Depending on how much heat you need is how large a bulb you use.

There's always coffee mug warmers, but not practical for PVC. Why again does it need to be PVC?
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Unread postAuthor: Demon » Thu Oct 30, 2008 6:16 am

Why again does it need to be PVC?


Because my gun is in pvc and i dont have the power to change it to steel?

Maybe be use some "light tube*" you know, the one on the restaurant windows?

*my english is really bad
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Unread postAuthor: psycix » Thu Oct 30, 2008 9:44 am

You can also just load the gun in the house, get out, fuel, fire, and get back inside. Those 30 seconds or less that the gun is in the cold wont freeze it.

Unless you are going into the field ofcourse, which requires a very unpractical heating system which is more effort then building a steel or copper (or aluminium) gun.


You could also try some sort of "coaxial" design with hot air flowing though.
It does not have to be water! I would use air as it is lighter and you have it everywhere around you.
You just need to heat it.


@diagram in first post:
Not all fittings are covered this way, and those are more likely to fail then the plain pipe.
Also, you do not heat up your valve which is even more important, and your barrel can also blow near the breach as that part suddenly gets a load of pressure on it.
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Unread postAuthor: grumpy » Thu Oct 30, 2008 10:45 am

you could always wrap it with one of those 12 volt electric blankets that long distance truck drivers use.
http://www.roadtrucker.com/12-volt-heat ... eets-1.htm
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Unread postAuthor: Gippeto » Thu Oct 30, 2008 11:30 am

Considering the cost, complexity, and added weight of a heating system, I have to second psycix, just build a metal gun.

My copper gun cost about $25 cdn to build, and cold is not an issue.
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Unread postAuthor: starman » Thu Oct 30, 2008 12:05 pm

They make small electric heating pads for your back and neck. You may be able to use one of those to wrap your chamber.

After rereading your post I get the idea of what you wanted to do.
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Unread postAuthor: POLAND_SPUD » Thu Oct 30, 2008 12:32 pm

I think it's going to cost more than building a spudgun from metal... you know you could use higher pressures if it was from metal ??

no offence but that's one of those posts where someone want to do somthing really impractical... the only problem is to make that person realize how impractical a given idea is...
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Unread postAuthor: jimmy101 » Thu Oct 30, 2008 12:46 pm

Like others have posted, the best solutions are probably;

1. Keep the gun inside, perhaps in the garage, for loading. Walk outside and fire. The PVC won't cool off fast enough to make any difference.

2. A forced water heating system is the wrong way to do it. Much to complex.

3. Easiest solution would be to just go to the hardware store and get the electrical heating tape used to keep water pipes from freezing. Wrap it aound the chamber then cover with a layer of insulation (like a blanket). AC power if you're near it, big ass battery (like a car battery) otherwise. Need a swtch as well to make sure you don't melt the heat tape.
http://www.amazon.com/dp/B00002N96H?smi ... nkCode=asn

The better heat tapes have a built in thermostat.
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Unread postAuthor: Biopyro » Thu Oct 30, 2008 1:00 pm

You dont have to go back indoors after each shot, you could just wrap roof insulation around the chamber if you stored it indoors. pour some warm water over it after each 5 shots or so, you'll be fine.
The pressure rating of PVC actually increases with a drop in temperature, but exceeding this limit or dropping it causes it to fail spectacularly. If you stay under 80% of the pressure rating and wrap in insulation, you wouldn't really need to worry about heating it at all!
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Unread postAuthor: nivekatoz » Thu Oct 30, 2008 2:39 pm

If I were in your shoes I would forego the complex heating device and think more practical. Rethink the whole thing.. Think metal. Steel is heavy .copper is expencive. How about aluminiun. Theres a site where you can buy sch 80 aluminum pipe or tube. Its ONLINEMETALS.com, and no I do not work for this company, The aluminum pipe is sch 80 and has a tencel streangth of like 10,000 psi or something like that. Im not sure you would have to check out the spects. I have mentioned the site before and was blamed for working for the place. I DO NOT. Any ways.... :roll:
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