Here's the key point : A flywheel helps build momentum that makes it easier to maintain the system.

In order for a flywheel to be effective, it must meet 3 criteria:

1. Activities must flow smoothly from one phase to the next


2. Each rotation is easier than the previous one


3. Each rotation produces more than the previous one.

On Deck is building a web of flywheels: each fellowship has its own flywheel(s) which connect to those of every other fellowship in one form or another.