Denny:
I owned a 51 3100 back in the mid 60s. I used it for a daily driver and did a lot of hunting with it. The ride whether smooth or rough never entered my mind. I am certain if it had been a rough, bouncy ride I would have recalled that. Bottom line, a smooth ride...
Now the ride on my 3600 before I dismantled it was pretty rough, however I never carried anything heavy there. Had I carried any significant weight I am sure the ride would have been softer. My 2004 Ford 250 came from the factory with 123 psi in all 4 tires. The ride home was pretty rough to say the least. The recommended psi was 80 and helped smooth the ride when I dropped it down to that. I always maintained the psi at 60 when not hauling weight. Big difference in ride relative to tire pressure.
Pardon the ramble...
