Old thread but I thought it was work mentioning I was Extremely impressed with these solenoids. I have REALLY tested them whilst driving Xens tungsten tipped saw blade through TVs, Microwaves, brick walls (by accident :S ) and even during stalls, they refuse to give up. I only stalled the starter mottor of about 5 sec tho so any longer might kill it. I also tried to see if it would weld by driving Xens blade against an object and tapping the trigger on and off several times, I thought maybe the current surge would weld it? but no...
so yeh, Very impressed