Flying 200 target cadence selection
This is a rough test for establishing a target peak cadence for flying 200's.
Ride a flying 50 on a smallish gear - for seniors 82" or 84" or thereabouts - it's not critical as long as it's a small gear but not silly-small.
Record the peak cadence you hit. Subtract 10rpm
This is your initial Flying 200 target cadence. It's a bit arbitrary, but it is a good starting point.