Spreadsheets for Ackermann steering linkage design These pages present a series of spreadsheets developed as a design aid for correct steering geometry in recumbent tricycles and similar vehicles. Introduction - about tricycle steering geometry The spreadsheets - and the different versions available Download - in several different formats Instructions - in tedious detail FAQ Geometry archive - linkages contributed by users Links - related and useful sites Use of these spreadsheets is free; however I would very much appreciate feedback, and if you modify the sheet and improve it in a way that might be useful for others, it would be good if you could email me (peter atsign eland dot org dot uk) a copy, with the details, so that it can be made available here for public download. Last update: 3.12.2002: Revamped pages uploaded. Please inform me of any broken links etc... Peter Eland Next: Introduction