Unfortunately, Freeman,...
We have no base data to compare. Pyrometer readings are difficult on a cruising machine (without a sidehack), and static readings seem to change as you watch them.
Observing the surface temperatures involves many variables beyond time and ambient air. Since heat flows to where it is not, the higher front readings may only mean that is where the most heat is leaving the motor at that time.
I have come to believe the front cylinder of a v-twin always "appears" warmer, although a 50°F difference is curious.
.....Cotten
We have no base data to compare. Pyrometer readings are difficult on a cruising machine (without a sidehack), and static readings seem to change as you watch them.
Observing the surface temperatures involves many variables beyond time and ambient air. Since heat flows to where it is not, the higher front readings may only mean that is where the most heat is leaving the motor at that time.
I have come to believe the front cylinder of a v-twin always "appears" warmer, although a 50°F difference is curious.
.....Cotten
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