Hey just got my digital speedo attached and working. Its a sigma1200, designed for a push bike but still alot more accurate than stock speedos after you tune it right. Unfortunately at the moment, just based on a clumsy wheelbase measurement, it reads 63 when stock says 60. I'm pretty sure it should be close to the other way around so need to tune it. I've heard the best way to do this is to find a measured length of road about 15-20kms. Then using the digital speedo vs. actual distance you can correct it. I know there are some places that have 'x km starts/ends here' signs, but I can't think of any. Can anyone recall some measured distances around 10-20km in sydney? Thanks!