I'll it looks like it may have a slight taper on the inside but it does not seem very pronounced. That's why my concern is that the cranks were out on a taper but built for it. Gears changed pretty well from what I could tell but it's tough to judge when the ride is so short. If I'd known I needed to watch for it I would have ridden it longer before parting it.

To the second poster.
That's the ticket!
I'll do that once I'm home.
thanks!
Tragically they where made.
youd think some aerospace folks would have known better.
"Most of them, unfortunately, used a badly designed crank/axle fitting with a non-tapered square fitting, rather than the normal."
From sheldon