From the various sources found and studied it was not very difficult to extract information for the dimension of the historic spars, as long as length is concerned. There were some slightly contradicting data about
sail leeches and spar lengths and - as there have been in the early years of the star class no clear and well defined measurement instructions and measurement points ( like the famous Point B) as we have
today - the definition of length was sometimes not exactly clear. We found it quite useful and meaningful to apply the modern class rules and definitions as far as possible, e.g. height of boom above deck etc.
The design parameters of the rig concerning the cross-sectional dimensions proved to be a real challenge. Data from the historic sources were contradictory. The dimensions are more or less known only from the
specification and purchase contracts with the boat builder(s). Some didnt make any sense from the engineering and construction point of view, considering the loads and forces to be expected under sail. As the boat
designers and boat builders at that time had a lot of practical experience and know-how, some of the published information is probably based on miss-understandings or typos in the long oral and hand written
tradition of the data.
Other interesting open questions have been the longitudinal shape of the spars: Was the sliding gunter slightly bend as most of other sliding gunter rigs of racing dinghies at that time? Some drawings and some of the
old photos show indicate a slight bend, while some photos show a straight spar. Is the diameter of the sliding gunter reduced towards the top? How much? And the mast?
The rig drawings have been developed step by step and we kept changing and adapting the unknown and undefined dimension until we found it logic, practicable and in accordance with the state-of-the art of boat
construction in the first decades of last century.