Jacobs Opto Timer Manual
27 June 2017
Ever needed to find a copy of the Jacobs Optotimer Manual? Well here it is. I scanned a copy of mine: Jacobs-Optotimer-Manual
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Notes about 2500 spring heights
8 November 2016
I took standard 2500 S springs and compared them to standard MKII and PI spring fitted heights. Mine are chopped but I’m not sure what from. I think they’re [...]
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