Re: Resistance Leak from Fast Track turnouts

Brent Johnson

I was using the acid flux recommended by Fast Tracks. 

My initial test of cleaning one of my off layout problem turnouts appears to be a success with resistance eliminated. I’m waiting for the cleaning solution to dry on my installed problem turnout to see if I have the same success.  Thanks for everyone’s input and suggestions.


On Feb 5, 2020, at 12:51 PM, Ken Harstine <kharstin@...> wrote:

If you are using anything other than rosin flux or rosin flux core solder then residual flux can cause a weak short.  Non-rosin flux is usually a weak acid flux which is conductive if there is any medium like water or something similar.  Rosin based flux does not conduct.  The primary advantage of the newer kind of flux is that it is easy to clean.  Cleaning rosin flux requires a strong solvent.

Sometimes when you cut the copper you can leave a tiny sliver that will also cause a short.

Best Regards,
Ken Harstine

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