direct drive
Direct drive is what most home dishwasher are, with the the pump being directly connected to the motor. The earlier Maytag RR, as Andrew said, had the motor off to the side and connect by a belt to the pump. Maytag did this to increase the tub size, since you didn't have to allow for the height of the motor underneath the center of the tub.
As newer more compact motors were developed, they were able to go with the conventional design with center mounted motor with no loss in tub space. The later models of the RR are all of the DD design.
have had both. I really like the belt drive but it seems to transmit a little more vibration to the dishwasher frame, to which the motor is mounted. On the belt drive models I can feel a little more vibration through the floor in proximity to the machine.
The Maytags are the most intuitive machine to load that I have ever had. You just look at the racks and instantly recognize what goes where. Maytag attacked the conventional paradigm that plates must go in the bottom rack.
My two favorite things are it holds more bowls than any machine I have had. There are ten dedicated bowl spaces, but you can also put bowls in the saucer racks if you have more, because with the fine holed high velocity water jets they wash just great even though they are more closely spaced.
The other cool feature is that you have a full sized spray arm at the top of the machine washing down. So pots and pans in the upper rack, get their bottoms scrubbed with a full sized wash arm. Which is useful if you have a spill over. The upper rack is deep and I can get a full sized roaster in it. I wash my electric skillet in the upper rack and it takes all the accumulated grease of the underside of the skillet.
The downside is you do not have a quiet machine here. Personally, I like the sound of raw unbridled power, ha. It's not so loud you can't have a conversation next to it, but on the otherhand there is no doubt you are doing dishes.
The BOL machines do not have an extended wash time, nor thermostatic hold, so you do need to make sure your entering water temp. is sufficient. I prefer the models with the extended wash as they scrub the bejeebers out of dirty pots and pans. The BOL machines do extremely, almost unbelievably, well for a limited main wash time, which I believe is 10 - 12 minutes, on eaveryday dish loads. But it can't fully compete with the extended wash time, which are about three times longer on the higher up models, when you have really crusty pots and pans.
By the way, Matt, when Scott is cleaning it up, be sure tht the filter is totally clean, and clean with CLR of Lime-Away if there is any calcium built-up. Also, check each of the small jet holes in the lower and upper wash arms, as well as the holes on the backwash jets behind the filter, for the same reason.
When reinserting the filter, make sure that the filter is securely placed into the grooves at the top and bottom so food wastes cannot bypass it. The washarm jets are so small, it doesn't take much to clog one.
[this post was last edited: 10/9/2014-11:32]