What goop to use?

[rockon1]

I want to secure a resistor from vibration. What goop can I use to do this? Thanks Bob

[SatelliteAmps]

Hi temp silicon.

[jfromel]

I use the stuff used to seal fish tanks, it's silicone, got a tube at Home Depot for about $3.50

[rockon1]

Thanks. Ive got high temp black RTV in the caulking gun size at work. Just being cautious I guess but I was worried about using something marginally conductive by mistake. Bob

[NitroLiq]

Amazing Goop. Most guys I've talked to prefer this over silicon for gluing down wires, caps, resistors, etc.

http://ak.buy.com/db_assets/large_images/356/208056356.jpg

[HipKitty]

With a good tie-down or wrap and solder of the resistor, you really shouldn't need to "goop" it.

By "gooping" it, you create a more difficult situation in the case that you may need to replace the resistor (for whatever reason). Depending on the board (specifically mass manufactured trace boards) and the goop, removal of the goop can cause waffering of the board and trace...sometimes pulling off the trace connection and causing more trouble than it's worth.

I've never understood why anyone would this with the exception of hiding their circuitry...which I believe to ridiculous anyway.

[NitroLiq]

With a good tie-down or wrap and solder of the resistor, you really shouldn't need to "goop" it.
It depends on what's being done. If you have a component that needs to be glued to the chassis itself (to prevent microphonics for example), goop, silicon, RTV etc. is fine. I think this is more of what the OP is asking about. Quite different from gooping an entire circuit to prevent tinkerers from tinkering. I agree with you about that, though.

[jay42]

I've never understood why anyone would this with the exception of hiding their circuitry...which I believe to ridiculous anyway.The Crate Vintage Club amps are gooped in between a bunch of components. Annoying, if you're trying to mod the thing. I wonder if that was Obeid's idea or someone else made that decision.

[edit]I asked. It was the standard way of doing things before he arrived.

[phsyconoodler]

pc board designers don't want you to mod their designs anyway,so they glue stuff for stability.

[jellewelagen]

Gooping does a lot of things like visually hiding the circuitry, hide the parts used, and it also is slightly conductive when RTV is used.

But it also isolates parts in a manner that they can no longer dissipate heat properly. This can cause a resistor to fail under the goop whereas it wouldn't have failed when it hadn't been gooped. ;)

Any RTV should work. Be careful with the acetic acid that is a product of the solidification process of RTV. It might corrode contacts in the amp.

Amazing goop is great stuff and does not breath out acetic acid.

Jelle,
Manhattan

[VanR]

I want to secure a resistor from vibration. What goop can I use to do this? Thanks Bob


Did you finally tackle the cathode resistor in your Crate?

[rockon1]

Did you finally tackle the cathode resistor in your Crate?

No. Shamefully I piggybacked another bias resistor in my Crate Stealth GT50 to raise the amount of available bias to the bias pot. Worked well just not the correct way . Bob