Hey Salem! I actually talked with you on the phone a few months ago about this hammer! I modelled my motor tower after yours if you couldn't tell. For now, I am running the small pulley on the drive side but I plan on making/acquiring a much larger one. I am also working on getting rid of flex I have a few ideas on minimizing that. It has been a while since I have updated this thread but the hammer is running nicely now. I am still adjusting and learning the best way to run the machine but it is working. There are a few problems I want to address with the hammer that I would like some input on here in the next few weeks. I cant work on it now I am at a week-long festival demonstrating.