Classic Motorcycle Mechanics

Cog-swapping!

It seems some time since we last spoke about the myriad failings of my purple nemesis. I am now in a position to start re-assembling the two-wheeled smog monster.

My gearbox arrived back at Chez Ferrand with all the broken bits replaced with used replacements that had undergone a serious health check, so I should now have all the ingredients for a good robust cog-swapper.

To kick-off I fitted the upper crankcase in my home-brewed engine building frame and selected a nice sharp wood chisel to remove the remains of old base gaskets from the mouths of the crankcase.

I cannot over-emphasise how important it is to do this tedious job with maximum care and full concentration, as any chunks

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