On Aug 18, 7:39*am, Jonathon May wrote:
The duo discus has always been a great glider but it was not easy to
land.The latest version XL has flaps connected to the air brakes,and it has
transformed it's approach control to the point it is just as easy to land
as a K21.When the total mass is750Kg you need to let the designer do the
designing

I'm experienced in the Janus (original model: flying tail, belly hook
only) and in the DG1000 but I've only had one flight in a Duo.

The Guy In Back got a bit preoccupied in the circuit trying to get a
balky radio to work, so I set up a reasonably tight final the same as
I would for a half brake approach in the DG1000 or Janus (with landing
flap).

Oops!! Captain she's not coming down!! It seems that they put pretty
much the same wimpy brakes in the Duo as in the Janus, but without the
benefit of the flaps.

Full brake did end up bringing us down to the threshold (which turned
out to be unnecessary as I was then told to land long) but it did
require everything, not the half I'd planned for.