The turnover is probably as technical a move as possible in disc
manipulation. It entails both spins, a myriad of angles and potentially the
whole surface of the disc. To do a turnover requires the ability to delay
both spins, to push the disc flat from an angled orientation and an
understanding of the wind’s (which can be self created) influence on the
disc. A basic clock turnover (a “the” turnover if there is such a thing) to
upside down counter would start with a clock delay in the left hand. One
must precess the disc. The nail will go from the center of the disc towards
the rim until the dome side is angled to a point where the disc can be
pushed with such force so the dome side is pushed into the wind and turned
over to a degree (and somewhat flattened). The finger would be inside by
the rim close to the body with the bulk of the disc away from the body (hand
on inside portion). This requires you to find the position which gets the
dome to be in a position to be pushed into the wind. This push is
essentially a skid as you push against the prevailing spin while pushing
into the wind while elevating it somewhat. To complete the turnover the
right hand needs to pick up the (now upside down) disc (somewhat, not
completely as it is at an angle) and flatten it. This is where right hand
needs to push into the dome upwards, making contact near the lowest point on
the disc, on the other side from the body. This push up will force air into
the “cup” of the disc, equalizing the pressure in it and flattening it. As
this is happening, the finger should precess back towards the center of the
upside down disc. It is kind of like digging out the disc.
The underlying key to a turnover will be the push. This is a
muscle-memory/feel thing and is different for everyone. The stronger the
push, the flatter the disc can become but the higher the risk of a
“blowout”. The push has a few components. The less the push the more the
upside down take will be angled becomes more difficult as the incoming angle
is increased towards near vertical. When pushing the disc over you will
push forward towards the wind (or somewhat across the wind) as well as
manipulating it in an upwards direction.
The ability to find the right body positioning cannot be understated.
However done, it results in the dome of the disc pushing into the wind like
an Apollo spacecraft re-entering the atmosphere and a “pull” which is also a
push to flatten the incoming turned-over disc. All funky turnovers will
have the same pressure point relationships. They will manifest themselves
in many ways, but if you could just focus on the disc contact point, they
will be remarkably similar.
Paul Kenny