Hi mister_e

I placed 2 MosFets in parallel on 2 of the 3 motor/ gen. setups and set the loads for 12A on one and 27A on the other. I have run them for 8 hrs with no failures, so it looks like I was just trying to dissipate too much wattage through them. This project is controlled by 3 Zworld micro's and power relays. The Zworld micro's and relays turn on the motors which are connected directly to the generators. The generators output is connected across the drain and source of the fet. The gate bias is obtained by a 10K pot also across the gen. output with the wiper going to the gate through a 100 ohm resistor.
One of the other projects controls the speed of a linear actuator by counting pulses from an optical encoder and adjusting the HPWM up or down based on the error. This project uses the 16F628 and a driver chip and 4 IRL2505's and a few other components.

Thanks for your replys.

Greg