cruiser54
NAXJA Forum User
- Location
- Prescott, Az
OK. They opened at 195,... progressively or quickly? Here is the theory,... if the thermostat open (even at the desired temperature) all the way out quickly, it will allow the hot water to flow to the radiator. Cool/colder water will take its place. This cold water being colder than the thermostat specs, it will close again until the water that surrounds in the thermostat housing reaches the 195 set temperature then it will open again. This could be repeated several times before it settles down.
When I tested those I had, I would allow it to open fully then add some cold water (not a lot) to see how quickly it closes and at what temperature then allow it to get hot enough to open again. I repeated it several times noting how quickly it opens and closes and whether or not it opens and closes completely with minor temperature changes. I find the OEM unit to open in small increments thus doing a better job at controlling temperature.
Here's the answer right under your nose.
Techno1154's scientific analysis verifies my real world experience with the factory stats. What a great contribution. Techno, can I copy your analysis for future use on forums?