I have a 1A100/MCM6950. It was pitched 48" when I bought the plane, but it was VERY short, so I had Maxwell re-pitch it to 50". The RPM is better now, but I suspect it performs about like a new 48", and is probably not very efficient, as it has been whittled down over the years, including rounded tips. I figure a new "L" series 69CK will be much more efficient.
