Flitzer Biplane History

Lynn Williams designer builder of the Flitzer range, has kindly revised the history and evolution of these fully aerobatic aircraft.  I realise people need a spreadsheet for the different types of aircraft along with some specifications and general notes, plans availability, engine options , weights, brochures etc. This will be forth comingas the website expands and details can be made available accurately. Currently the New Meteor 'J' series is finalised, the focus for Lynn is to complete the plan set now. Plans  available for the J6A

The Flitzer biplane range  are all designed to conform to historically authentic stereotypes without hint of compromise. Stummelflitzer not Strummel... (one word) meaning Clipped-Flitzer (or 'Stump Flitzer' literally, like Stummelhabicht - Stump Hawk) a typical portmanteau German word.

It stemmed from the fact that the first 'Stummel' was a smaller cut-down version of the Z-1 prototype which, the moment I taxied it 'tail up' for the first time, its docility and good manners made me realiseI could have made it about 10-15% smaller, which had been my original intention. The Z-1 is now the standard sport model redesignated Z-21 with some refinements including a 6% bigger and 25% deeper 'aerobatic' tailplane. Then, when developing the smaller aeroplane, I was asked by a French builder to design a fully aerobatic version of the Flitzer so I adapted the smaller design for four ailerons with a more rugged airframe, keeping the name. This then became the Stummelflitzer Z-1 Type S (S for Stummel or Special - like the Pitts) and a further French request resulted in a short-stagger adaptation with more wing area which became the Stummelflitzer Z-1 Type R (for Radial or Rotec). However they are still 'Flitzers' which is now a generic term for the marque. The French Z-1S has a Praga D75 motor which lengthened the aeroplane somewhat so I changed my original 'square' Stummel fin and rudder (considerably more robust than that of the Z-1/Z-21) to an elliptical tail which has since been further adapted for the Z-21.
Information courtesy of,
Lynn Williams 2012-16