WARNING… Read the fine print on mixer specifications

We will not share the name of the manufacturer of this skid steer mixer, because it really doesn’t matter. The issue of inflated capacity claims is nearly universal in the small concrete mixer universe. It is not our intention to suggest that these machines are not good, just that claims of capacity must be examined carefully. Regardless, let me share a press statement that would be very common when one of these small mixers are introduced to the public:

“The direct hydraulic drive of the gearbox eliminates chain and sprocket maintenance, offering more up-time on the job site. A large 11-cu./ft. drum allows the operator to mix, transport and place 5 cu./ft. of concrete”.

If you didn’t read carefully you might think that you are looking at a concrete mixer that will give you over 1/3 cubic yard (9 cubic ft.) batches. What you must understand is that the drum was measured for its potential volume (“A large 11-cu./ft. drum”) when it is tilted straight up and filled with waterBut when it is tilted down into the mixing position the capacity drops to less than 50% of what was stated.

To their credit, this manufacturer did take the time to honestly state the mix volume at 5 cubic ft. We do not know why small cement mixer manufacturers choose to employ this tactic, other than it makes the equipment seem bigger than it is. It is a very common practice. It seems that the honest mixing capacity is what the end user is looking for, not how much air or water the drum will hold. They are concrete mixers, not water tanks, after all…!!!!

We call upon all concrete mixer manufacturers to join Cart-Away Concrete Systems in listing the actual mixing capacity for their equipment. When we say that a mixing trailer is 1-yard, it will mix one cubic yard of concrete. The same is true for a 1.75 cubic yard specification on a concrete mixer. We need more truth in advertising in the cement mixer world…