Doesn't look heavy enough-I looked though the site and didn't see that the drums can be filled to add weight. I suspect you could only work after rain or the lawn being irrigated.
When you run it you will have to lift handles all the time, tiring plus seems this would also put your feet very close to tines.
16 tines vs 30 on a Ryan 4 and with tine spacing I'm guessing you would need to make at least 2 passes to do an adequate job.
I had a Hann aerator that was a similar set up, I used it for 4 weeks and sold it. A worthless machine unless turf was well watered.
If you need an aerator at low cost I would save the $ this would cost and look for used or rent.
