Motorcycle General Discussion

The bearings are mainly for aligning the pressed up crankshaft similar to a Alpha-Tru aligner the straight edges for balancing.

Thanx for that. And yes please, i would like to buy an Alpha-Tru for 11 Pounds and 10 Shillings please...

Have we seen this already? Sorry but memory now not as good as I think.

Jim

**LINK**

So having found that it is out of true what do you do? Just hit it with a lead hammer, or do you scotch one side with a block to prevent it rotating?

This is probably becoming a lost art as Japanese bikes seem to last forever (I will now go and wash my mouth out)

Mine didn’t. It cost me £26.10s for a new crank for my Honda twin, back in 1969! Hate to think how much they are these days! It was likely the gearbox failure that precipitated the crank failure at ~21k miles, but the rod bearings were already at, or outsde, the service limits laid down (4mm rock at the small end?). No gaskets needed between the top and bottom crankcase/gearbox halves, mind - and no leaks afterwards.

Have seen video of one repairer having a stout upright fixed steel bar with probably a lead block on top just banging the offset flywheel on it a recommended way in some books.

Just been notified of my friends machine in Performance Bikes magazine.

Edited By Windy on 06/12/2018 13:02:26

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That's mighty impressive

... Hope it goes as good as it looks !!

MichaelG.