JT Chain - Rivet spread?

ThunderGuts · World Chat Champion Joined: 13 Nov 2018 Karma :

Tried (!) fitting my new JT X1R 520 chain to my bike yesterday (along with new sprockets), all went OK until I tried to "mushroom" the master rivet. There weren't any instructions with the chain so I didn't know how far to go (never riveted a chain before), did Googling to no avail, so decided to aim for 0.4mm of total spread. Started turning, last measurement was 0.15mm, then went at it again and heard a crack . . . sure enough, the rivet has split. Doh. New master link time.

Anyway, does anyone know what the "spread" should be on these chains? I don't want to keep on wrecking master links and faffing around grinding them off again!

Cheers
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TG.

Nobby the Bastard · Harley Gaydar Joined: 16 Aug 2013 Karma :

The spread of the link is only supposed to stop it coming off. It doesn't add really to the structural strength so you only need to ensure its actually spread. I think i settled on about 0.1 mm last time and that was on my litre triumph.

Ive never lost a chain btw.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

ThunderGuts · World Chat Champion Joined: 13 Nov 2018 Karma :

Spoke to JT directly (which was actually easier than I expected); it's 0.4mm spread. There was a "knowing" sound at the other end of the 'phone when I mentioned about it cracking. Laughing

Ordered two more, working on the reverse psychology that having a spare will make it less likely for me to mess up on the second attempt
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TG.