Re: Stevens ST-75 Tester first time user questions

[joesnuffy]

I have a Stevens ST-75 tester and love it. Its an awesome tool. Wish I had one when I was a lad.

It is very accurate at testing condensers and their values etc. I did notice when testing the used stand up condensers on West Bends/Scott Atwaters that the brass condensers for the most part tested O.K. the steel stand up condenser don’t Just curious if anyone has experienced that?

Most used condensers I test don’t pass leakage test I think its because their paper construction inside not like the Orange Drop Panasonic Film condensers/capacitor inside.

Generally new OMC condensers do pass the test.

The digikey Orange Drop Film condensers/capacitor pass the leakage test faster than any condenser I have ever tested they immediately fall into range when tested for leakage they don’t take a second or 2 like OMC paper ones that pass. I believe omc makes their condensers from paper not film. Panasonic orange drop ones are made from with film which is more reliable. I put a couple of orange drop condensers in a 40hp 1956 Scott I am working on and it idles awesome and very steady no flucuations.

Leads me to believe the Orange Drop Capacitors would be way better at keeping points from burning. Just my humble opinion and their relatively cheap. Some folks here that use them could say how they do in comparison with point burning.

Great video on capacitors/condensers.

https://www.youtube.com/watch?v=2bBifpRa890

When testing coils not all are equal. I have noticed some take more power to produce spark. Once you have tested several you will know if your having to give one more power than normal to get the spark. I guess that is kinda a learning curve with using that piece of equipment each one will vary a bit. I would try and replicate the spark leakage jumping from a new coil around the laminate clip I bet that is a weak coil your testing.

Hope that helps,

Joe

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