Both are available as downloads from the Tc holder’s website.
Scheibe-aircraft.de

At 12:26 06 October 2020, Neal Stephenson wrote:
Thanks Eric,
would you know where I could get a copy of the technical Manual
that would
detail this changes that are required.
We have the expertise here in South Africa, but would like to
follow the
Schiebe modifications to the book!
Thank you so far.
this On Tuesday, October 6, 2020 at 11:45:05 AM UTC+2, Eric
Munk wrote:
Scheibe TM 653-32 refers to conversion to C-model. It's only
possible for

certain serial numbers and involves major work (changing the
rear wing
attachments, engine mounts/engine), then standard C-model
MTOW.

Scheibe TM 653-33 refers to conversion to D-model. For all
serial
numbers.
Major work, involving shortening of the wingspan, structural
changes to
the
fuselage, engine change and new prop, new fuel system, the
MTOW 580 kg or

there abouts.
At 08:08 06 October 2020, Neal Stephenson wrote:
Good day,
Does anyone know what is required to upgrade a SF25B
model to a C or D
model.
Basically the requirements to increase the all up weight
(MAUW). to at
least the 610kg mark.
I see some of the later versions are up to 690kg.
(This will be in the experimental catergory)

Thanks in advance.
Neal
South Africa