I had a couple of old machines back in the 80's and they were old back then. One had a a steering bar that looped down to the steering mechanism and the other one was similar. They were both in th 5 hp range and were quite low to the ground. They had hard rubber wheels of about 5-6 inch diameter front and back. It had reverse and forward with a little tranny and they were belt driven from a vertical shaft motor. Hope I am getting my facts straight. Don't remember a lot about them but I haven't been able to find one of these little units any where and I am sure they don't manufacture them anymore. Anyone know anything about these little rigs or maybe still have one?