100 degree heat with an air cooled engine

[dsinned_imp]

The "accuracy" of the Trail Tech temp sensor is highly dependent on the thermalcouple's mounting location and exposure to the cooling air wind stream. Ideally, it should be in a dead air location away from forced air cooling.

I got relatively low readings initially as well. I had to jury rig a thermal barrier around the T/C on top of the EOC, while pressing it down with a couple of tie wraps against the top of the cooler housing. I believe this location is close to the higher temperature oil flow inlet to the cooler. After doing this I realized temp readings as high as +210F riding at slow speed (uphill) on a moderately warm Fall weather day. Typically, under normal riding conditions, at highway speed, I see about 180F on the readout. This seems about right for optimally air cooled oil. Of course, my pusher fan mod, helps to keep the temp from increasing to much higher readings under harsher riding conditions.

Try the insulating thermal grease to see if your readings increase. And if I may make a suggestion, also try covering that location of fins with a small piece of duct tape on the front of the cooler. This should help to improve the accuracy of the sensor. It is still not as good as having a sensor in direct contact with oil INTERNALLY, but still should help to improve the TT temp sensor's accuracy.