Sometime before Xmas Chris Launders bottomed out the rear end of his twin over a particularly severe pothole. Since then Chris has been taking lots of measurements and I have been doing calculations. When Rob Staley developed these units with AVO he produced a spread sheet to work out what springs to use with what weight of riders, possibly with pillion passengers. Our intention is to put an easily consulted table, both one here and in MPH, which riders can consult when setting up their bikes. We have now come up with a table of rider weights and spring compressions but before putting it on here or in MPH it would be good to check the calculations with what people are experiencing in the real world. Therefore this request is for anyone who has a twin with this set up and has the time and patience to make some measurements. Place the bike on the rear stand. Measure the distance, in inches if possible, from the lower edge of the preload adjuster at the bottom end of the spring to the top of the upper spring aluminium stop ring. The measurements that would be useful are bike only, bike with rider seated and feet off floor (we need to know your weight as well) and then finally, if you carry a pillion passenger occasionally, the same measure of spring length with both rider and pillion seated and we need to know the weight of the pillion rider as well.
Thank you in advance.
Thank you in advance.