Having discovered that errors of 1mm or 1° can add up to become a huge problem and that many critical dimensions were missing from drawings, the decision was made to enter the Adobe Acrobat format drawings into CAD.
This process soon highlighted numerous inconsistencies in the paper design that once transferred to metal, could explain much of the problems I’d found with my purchased chassis. In many situations a builder would be faced with getting one dimension correct at the expense of another.
The original drawings showed 1inch to equal 25mm (and not 25.4mm). Strangely although dimensioned in mm, some dimensions only made sense when tubing was taken as 25.4mm (hard to find in the U.K.). These errors added up, especially in diagonals.
Once the design has been completed a full set of drawings will be posted here.
6th September 2014