Iplayfarmer
Super Member
Attached (I hope) is a sketch of what I have in mind. I dont think its quite as complicated or dangerous as some of you inagined. The red dotted line is the shaft which is below the deck, belts would pass through holes cut in the floor. For power you can see the inline 6 engine, transmission, and shortened differential (output calculated to be 540 RPM at 2000 engine RPM). Weight looks to be fairly evenly distributed. I dont plan to stand on the trailer or use any part of it as workspace (for safety). I didnt label it but the green thing on the front of the engine is the air compressor.
I'm sure MrKubotaKid's comments are will intentioned, but I think you can make this and make it well. Admitedly you'll never get out of it what you'll have into it in time and materials if you ever wanted to sell, but I think you can make something that does everything you want it to and does it well. The advantage you have is that you're making one product for one customer (you). You don't have to appeal to a broad customer base.
By the way, have you ever looked at Sketchup for your drawings? Your trailer diagram was quite adequate, but you might like the extra options that a 3D visualization program like sketchup offers. It's free.