Grob Twin Astir

At 23:25 30 September 2016, Martin Gregorie wrote:
On Fri, 30 Sep 2016 13:26:10 +0000, Michael Opitz wrote:

IME the elevator is reasonably functional on a G103 Twin 2
Acro but it
could certainly use a better rudder.

Does it have the Z tape installed in front of the control surfaces
as
per the Grob/Lindner optional service letter SL-12? If not, you
might
find the effectiveness will be enhanced if you do install it. It
works
wonders for the Twin Astir rudder... It is certainly easy and
cheap
enough to try, and it is factory approved as well.....

I don't recall seeing any zigzag strip in front of the rudder hinge.
I'll
look next time I'm at the club and mention this where it may do
some good
if it is not turbulated.

Thanks for the tip.


--
martin@ | Martin Gregorie
gregorie. | Essex, UK
org |


Martin,

You are welcome. If your Acro doesn't already have the Z tape
installed, I would be interested to hear your opinion as to if
the efficacy of the rudder is noticeably improved (or not) after the
installation. If the fin airfoil profiles of the Twin Astir and the Acro
are close, I suspect that you will notice a favorable improvement.

Good luck...

RO