I need a piece of copper plate, about 4" square, to make a heat sink for my lamda sensor, anybody got any? Or know where I can get it?

Doesnt the Lambda sensor live in the exhaust or am i being stupid (for a change i hear you say!)??

yeah dude what's your thinking here?? kind of likes to be hot, no?

anyway, if you look on google for brass and copper plating used in model ships its very easy to get.

[Edited on 11/9/08 by Mr Whippy]

The lamda sensor location is right near the exit of the turbo and the makers advise to reduce temps by fitting a V shaped copper heatsink around it (cut a sensor sized hole in it, and bend up each side). I may even have to move it further down the pipe.

I'll check my local model shop, thanks for the tip.

ha I see, learn something new everyday

I would make one from a bit of aluminium sheet.It has good thermal conductivity and is the normal material used for heat sinks. Alternatively find an off cut of large copper tube and cut and flatten it.
Paul.

aluminium melts at much lower temp than copper so I wouldn't use one on an turbo exhaust thingy, but you *may* be ok.

as ^^^ said, a piece of copper tube, slit, and then flattened out. You can use two or more pieces and make the angle of the V less to have a multi finned heat sink.

a 32 mm tube will give a 4 inch wide piece. (pretty sure that side exists).

Hi. i would get a bit of 1.1/2" copper pipe, slit down side and flatten out. older pipe will be thicker + better heat sink.

Mike.

if you can't find a bit for nowt, I've got various odd and ends from this guy before (stainless, alloy, bronze, PTFE.....)
http://homepage.ntlworld.com/themccoys/

he's the one that turns up at stoneleigh and some of the other shows, I've always found him really helpful

[Edited on 11/9/08 by mcerd1]

[Edited on 11/9/08 by mcerd1]

local scrappy and an old hot water cylinder springs to my mind,

Father-in-law is a retired plumber with a garage full of stuff, I'll go and get a bit of old 32mm pipe from him - great idea.......

I think I have some old brass kick-plates off the bottom of some doors (kick-plates not on the bottom of the doors would be silly) if that would do? I may even have some copper bus-bar material. I'll have a dig around tonight at work.

Thanks mate - hold off for a sec as I'm sure the father in law will have some old pipe....

if needed i have some copper plate in work let me know what size and thickness needed
cheers
colin