do not know where the clutch is situated on a super JR but on the SC352 the clutch would be cooled by the natural blast of the engine cooling fan, I do not see that electric clutches are as unreliable as made out, my pedestrian Dosko has an electric clutch, 7 years old and no probs yet...or have i just put a curse on it......i don't think lecy clutches are bad in in themselves. must be how they are designed into the machine...... (+ it's a bit cooler in the Uk i guess)