Drawing chassis in Woogle Sketchup

[TalonMotorFabrication]

Sat here bored witless (now with added head ache) decided to start redrawing the book to TMXR guild in Google Sketchup same as the 3D drawings in the book, bare in mind it's been quite some years since I made my build table/jig.... I must have ignored most of page 34 and used fabricators method of measuring square corner to corner as none of the numbers on page 34 of the book bare any relation to the tube appendix once it's built???
No wonder people have produced chassis that are 10mm out by the time they get to the front..............
So I'm going to produce lower chassis rail drawings that the book tube appendix builds not what page 34 says it should be which is 5mm out, maybe future builders will avoid the same head ache.