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[essex2visuvesi]

As the title says

I have got loads of the stuff (New I would like to add)... would it be suitable to make a motor water cooling coil?

[JB]

Perfect I'd say..but a second opinion would be good.

Do you have a brake pipe 'tool' kit? if you know what I mean....when I was messing about with MG's we had a pipe forming thingy..can't remember what it was called now...

[Stavros]

Will work fine personally I use a slighly smaller motor or anything to form the coil.If you use the motor to form the coil you will find that it is slighly loose,tighter the better



Stav

[Subculture]

Copper is about as good as you can get for a heatsink, short of putting the motor directly in contact with the wet stuff. You will probably have to anneal the tubing a couple of times to get all the bends in.

I make my own watercooling blocks out of copper sheet for the processors on my computer, keeps it lovely and cool which makes things super reliable- I've never had a system crash in years. 

Andy

[essex2visuvesi]

Will work fine personally I use a slighly smaller motor or anything to form the coil.If you use the motor to form the coil you will find that it is slighly loose,tighter the better



Stav

you mean one of these?
http://www.carparts-direct.co.uk/home/brake-pipe-flaring-kit

Then yes lol

[JB]

you mean one of these?
http://www.carparts-direct.co.uk/home/brake-pipe-flaring-kit

Then yes lol

Yes, you just need something to form the coil, its easy, sorted I reckon...

[essex2visuvesi]

Bit of broom handle should do the job .... warm the pipe a little and bob is your uncle!

[JayDee]

Hello,

 I think if you place a Magnet onto your "Copper" brake pipe, you are in for a shock!.
Copper coloured it may be, but its not Copper.
The Pressures involved in a cars brake system are very high, Copper pipe would burst.

John.

[Circlip]

Cu-Ni-Ferr, although SOME advertise pure Copper tubing. Only thing to watch is that when bending, don't form kinks that will restrict flow.

  Regards  Ian.

[JayDee]

Hello,

Yes, you can buy Copper tube, but we were repairing Aston Martin, Ferrari, Jaguar, and various Classic cars, each worth a small fortune, we never used the copper stuff!, too much of a risk.

The only time I have used copper tube was for the Oil Feed lines on a 1898 Panhard Levasour, which had next to NO brakes!!.
It had wood blocks on the rear wheel drums only !!.

Most, if not all, modern cars use the Nickel/Copper type of tube.

John.

[RaaArtyGunner]

Cu-Ni-Ferr, although SOME advertise pure Copper tubing. Only thing to watch is that when bending, don't form kinks that will restrict flow.

  Regards  Ian.

Recall an old plumbers trick of the trade, was to tightly fill the pipe with fine sand and heat whilst bending.
Never tried it myself.

[nick_75au]

Hello,

 I think if you place a Magnet onto your "Copper" brake pipe, you are in for a shock!.
Copper coloured it may be, but its not Copper.
The Pressures involved in a cars brake system are very high, Copper pipe would burst.

John.

I don't think it's the pressure thats the problem but work hardening, copper work hardens and the vibration in the car would cause copper pipe to crack, copper covered steel, the copper is to reduce corrosion.

http://en.wikipedia.org/wiki/Bundy_tube


EDIT
In light of the next couple of commennts and rather than adding more  OT posts  I looked it up and pressure if 2500 Psi would be a problem, Its just what I was told by the RTA when doing a vehicle resoration a while ago
Spose it always pays to dig a little deeper, especialy where beaurocrats are involved

Cheers
Nick

[derekwarner]

I must agree with circlip....a cupro/nickle/ferric alloy is used ....pure copper & nickle are metals with astronomical $...where as the 76% steel content of Cu-Ni-Fe provides a cost effective alternative with the nickle providing high strength & corrosion resistance, & the copper providing malleability & corrosion resistance  ....Derek

PS...I would not use the material for a water cooling heat sink.........

[Circlip]

Pressure is/can quite easily be the reason for NOT using pure Copper. Copper plating is attacked by road salts etc. Citroen, in their infinite wisdom use d to use plastic covered steel tube (1/8" -3mm bore) for their brake and active suspension lines, sadly these used to rot at the ends where the coating had to be removed for the clamping nuts to work. Luckily no-one suggested replacing them with Copper, 2500PSI would have taken its effect.

    "There's only one way to kill a mole" Line from a Jasper Carrot performance, same applies to bending tubes successfully. MANY trains of thought but only one is the answer, rolls and a wiper die.

  Regards  Ian

[Subculture]

I would not use the material for a water cooling heat sink.........

Even if it's an alloy it's still going to be pretty effective at siphoning off heat, and if he has plenty of it, I would be inclined to at least try it.

[derekwarner]

sorry... should have explained........or clarified  about the physical properties of 76% steel Cu-Ni-Fe tubing

1. precision cold bending [die & former] of 76% steel ....Cu-Ni-Fe tubing as used in repettative applications such as the automotive industry as mentioned here is fine......millions of new automoblies have the same fitted every year........
2. 76% steel content Cu-Ni-Fe tubing cannot easly be annealed for hand bending
3. localised heating to cherry red... followed by off hand bending may be OK for one off 90 degree bend...but the results will vary consideribly  ....Derek

[essex2visuvesi]

Hello,

 I think if you place a Magnet onto your "Copper" brake pipe, you are in for a shock!.
Copper coloured it may be, but its not Copper.

John.

Well there's not much steel in it as a magnet will not stick to it lol

[Subculture]

I would just suck it and see- cost owt to experiment, and it's not like you're putting the pipe under any degree of pressure when in use.

[essex2visuvesi]

thermal transfer test underway with a bucket of cold water and a windscreen washer pump

[derekwarner]

Goodness  ....what are we comparing here?????????????????????????????????????????????????????????????

1. a Kornal Saunders fried duck fillet 
2. a bacon & egg roll ........
3. a cold tuna sandwich........

if the result you get is as per Essex2visuvesi  
 
"Well there's not much steel in it as a magnet will not stick to it"

Just give it a go.......... ....Derek

[catengineman]

Has worked on my Tito motors without problems.
the pump is where the problem may arise as some pumps used are not rated to run for long periods but a fuel pump can be used to overcome that problem

[Circlip]

Stop being a silly burger Derek

  Regards  Ian.

    Oooooops, fergot the smiley.

[essex2visuvesi]

Has worked on my Tito motors without problems.
the pump is where the problem may arise as some pumps used are not rated to run for long periods but a fuel pump can be used to overcome that problem

The pump is for testing purposes just to give a flow throught the pipe. The boat will have standard water pickups

There seems to be good thermal transfer through the pipe wall as the pipe feels significantly colder to the touch after the pump run for 30 seconds

[triumphjon]

i have two coils fabricated around my jp 400 motors both of which were made from  a peice of COPPER brake pipe , works a treat & didnt cost anything to make ! the brake pipie kits from automec are copper and supplied for classic cars , ive fitted them in most of my longer term classics when new pipework has been fitted , along with stainless steel braided hoses where any flexible joins are required . i even converted my modern escort mk5 van  !

[davidm1945]

Hi All,

    Back in the days when we used to use i/c engines in model boats we used to make our own cooling coils from Calor gas tubing which was thin copper tube and bent round a cylinder without distorting. Now as I say this was "back in the days" and I don't even know if it is still available but your local Calor gas depot should know. It was certainly easier and softer to work with than brake piping. No doubt some of the folks on here will have used it and can advise...

Dave.