John Dolan - Wirral & North Wales AO Posted December 7, 2016 Share Posted December 7, 2016 Thinking of changing from 15" to 13" wheels. Having a bit of trouble working out how to re-calibrate my speedo. Pity that Ole Romer isn't around, in 1676 he realised that light wasn't infinite and calculated it's speed at 220,000 km/sec. Pass me that calculator. Quote Link to comment Share on other sites More sharing options...
Quinten Posted December 7, 2016 Share Posted December 7, 2016 maybe useful? Quote Link to comment Share on other sites More sharing options...
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