Computer chip insulator

[toadstool]

On our computer brains and ignition modules there is a black substance that I assume is poured over the computer chips once they are set in their housing. I have a nitrous controller that measures 4.1"L x 2.8"W x 1.1"H. I plan on removing the chip out of the plastic container and mounting it in a slightly smaller metal project box to add strength and would like to weather proof and insulate the chip. What is the black stuff or what else will work well. Also, any clue where to hide this thing at? The battery box is too small.

 

[Raywood]

Ok, keep us posted but I would imagine you would get more info from the factory. They can find out from the company that makes the EHC's what material they use in the EHC. I'll guarantee you that it will void your warranty though so you might as well remove all of it and just install the Wire-Plus from Jake. Might be easier and simpler in the long run.

Good luck though with your project and keep us posted.

 

[stlmikie]

I think he just wants to know what the stuff is so that he can do it with his nos switch. Is that waht I'm reading? You want to take the switch chip and put it in a smaller box and fill it with the stuff?

 

[chacha]

That material is "Potting" and is a plasticine, non-conductive filler to provide insulation and vibration resistance. It gets into nearly every void so it will stick to, around and under every component in the case.

Removing potting material is RISKY at best. since it gets into everything you will most likely tear up or pull at the connections as you try to remove it from the components. Recommend contacting the device manufacturer to see if they will sell you a base (or pre-potted) device, then you can handle the packaging yourself.

 

[TheDeadOne]

That material is "Potting" and is a plasticine, non-conductive filler to provide insulation and vibration resistance. It gets into nearly every void so it will stick to, around and under every component in the case.

Removing potting material is RISKY at best. since it gets into everything you will most likely tear up or pull at the connections as you try to remove it from the components. Recommend contacting the device manufacturer to see if they will sell you a base (or pre-potted) device, then you can handle the packaging yourself.

Toad,
chacha is in the right neighborhood with his statement. There are many different types of epoxies. They are NOT all a "non-conductive", encapsulating epoxies though, but that "IS" what you will want "Non-Conductive, Encapsulating Epoxy". It comes mostly in a two part mix, just like many other epoxies, and is poured into whatever you might wish soon after being mixed. It will fill every void and adhere to everything it comes into contact with and dries to different selections of density (hardness), I do NOT recommend semi-hard (silicon based epoxies) or SOFT epoxies. Select a "hard" cure for the best results in both shock resistance and for weather resistant applications. :2thumbs:
Available on the net, most likely in search areas of "Electronic Encapsulating Epoxies".
Just remember what Chacha said about any type of removal, "The internal devises will most likely get totally trashed during any attempts of epoxy removal" whether physical or chemical induced!

Good Luck! Hope this Helps! :2thumbs:

dead

 

[toadstool]

I took the cover off the NOS controller and there was just a bare chip, no epoxy so I am in luck. I want to take the chip out of the oversized plastic case and install it in something more durable like a metal project box and add epoxy to make the product durable on a bouncing bike. I was thinking about stashing this thing under the frame. Since it is only an inch deep I shouldn't be in any danger of sheering the box unless I load it on a trailer. What do you think? And thanks for the help.

 

[Nomad2day]

Do you not have room to install it under where your EHC is? Prior to eliminating my EHC I fabricated a bracket that mounted underneath it for my wide band fuel injection stuff. After it was eliminated, night train used the same area to mount some other electronics in. Everything has held up find so far..
Neil

 

[Raywood]

Lots of room under your battery box too.