Slingsby T3 Dagling (Zögling) 

The Zögling primary glider was designed mid twenties by Fritz Stamer and Alexander Lippisch. The machine in the  BAPA collection is a version built by the British company Slingsby and named "Dagling". Donated by an aviation enthusiast many parts are missing and It will be completely rebuild for static display.

Above and left, June 2016: The machine that we received was a jigsaw with missing and damaged parts. The first job was to sort and identify the components to assess the work to be done.
Winter 2016 - fuselage reconstruction. The fuselage had been, for an unknown reason, carefully dismantled and was reassembled relatively easily thanks to the good condition of the parts. 

The keel and the seat were in very good condition, missing only a few parts and needing only a good cleanup and a few repairs.
Above, Winter 2016: Fuselage framework, keel and seat (with spare) are the main components of the fuselage. In good condition rassembly was relatively easy. At right, the fuselage reassembled, the fuselade skid and the seat  back were missing and had to be built.
January 2017: The tailplane components were mostly complete but very damaged. Many repairs had to be done and at the end its nearly 20% of the structure that had to be replaced. The metallic parts were removed to be properly cleaned, treated and painted.

Summer 2017, the taiplane has beenl repaired and assembled with the fuselage in order to adjust the control cables and to manufacture the two missing steel tubes. The taiplane has been completed and fabric covered during the 2018 summer.
Above, tailplane components repaired . At left, the tailplane completed and attached to the fuselage using the two availabg steel tubes.Two new tubes had to be manufactured. Below: the tailplane complete and fabric covered.
In parralel to the tailplane repair new ribs for the wings were manufactured using a template made using the original drawings. Hopefully most of the ribs were identical and  the many triplex gussets of various shapes needed were laser cut, saving a lot of manufacturing time.
Winter 2018-2019: the control cables, rusty but almost all in good condition, are cleaned and treated. The few missing control cables had to be manufactured.

Spring 2019: using the newly manufactured ribs and the original spars, the  reconstruction of the left wing begin. This reconstruction, in which as many usable original stucture parts as possible are integrated, took months to complte. 

Above: newly build ribs are inserted in the refurbished original spar,  under you can see in darker color the original wing structure that has been installed and the first steps of installing the plywood wing root. At right: left wing is mostly complete and the installation of the plywood wing root  is underway.
Now its the turn of the right wing to be rebuild & the ailerons, that have been refurbished and fabric covered, are installed to ensure all is ok. 
Once done the glider is fully reassembled for the first time in May 2021 to verify and fine tune the command cables and the structure wires.

The final job is the fabric covering of the wings, using the good old dope.

The machine fully restored and fabric covered is displayed during an event at Temploux airfield ("le printemps de l'aviation") in march 2023, conclusion of a lenghty but nicely done restoration/reconstruction work of an interesting early trining glider.
Above,aileron installed on the newly rebuilt right wing. The glider assembled for the first time in May 2021  and the fabric covering of the wings underway.

The machine fully restored and fabric covered displayed during an event at Temploux airfield ("le printemps de l'aviation") in march 2023.