18.97 Dip Switches

[Serum]

I personally would try the softest settings to start with, on 9khz.. 9Khz gives the 18.97 a lower load than the 19khz setting. (the 18.97 must work twice as hard on 19 khz)

you should set it on boat or on car. (car is reccomended)

What is running hot? on how many cells? is it the motor or the speedo? did you measured the temp or did you probed with your hand?

Just try the different settings, starting with the softest, and measure both the motor and the speedo.

You are using a heatsink for your motor?