Its not that the screws can hold 750lbs, its that over time the wood at the end of the screws wont. Dont care what size the motor is, Id use lag bolts with nuts and washers, just like they do on wheelbarrows. Then you can hang your car off that thing, too.<br />Originally posted by Scott Turchin:<br /> Those screws are deck screws rated at like 750lbs and are about 3" long, but I could put one more in......it doesn't even flinch when I run the motor on the stand....and I initially ran it with just one screw on one side and two on the other as I forgot to finish the job<br /><br />The only thing I would do different is offset it maybe 1 or 2" more..