Hi,
Where's me chain
Well out today and a rather annoying tick on the chain drive, I put it down to the very worn BB so I carried on and at the furthest from home (20 M) Ping...
No drive no chain......found it just behind me, so I fitted the chain back on and used a magic link which went on and snapped in easily.
Finished the journey with out further mishap, even picked up some dumbells at the recycling centre adding 11 k to my 23 kg bike
I even managed to route the chain incorrectly through the rear derallieur so the chain was outside the cage between the jockey wheels
Noticed when I got home. This is a one off too duh.......... never ridden a bike like that even though I have assembled the chain by mistake on the stand.
The chain was not like this before it snapped. Only one pin was still in chain the rest had gone.
It appears that the chain snapped at the place I had rejoined the chain after splitting it to remove from another skip bike.
So it rings true that if you split a chain and rejoin with the original pin it weakens the chain at that ponit as the press fit has been compromised.
I always knew that but I had faith that it would not affect the chains integrity, as long as I inspected it regulary.
I had inspected the join last night but could not predict the outcome today.
The chain was a KMC 4B ? seven speed chain, I gauged it before using it and was good, looked like new too, it has done 310 miles on my bike.
This is the first chain that has snapped on any of my bikes ever.
kmc narrow z 634 miles above 1% worn.
kmc hp nc 513 miles worn.
Current chain kmc 4b 310 miles pin gave way.
All the chains are seconds taken off old reclaimed bikes and were guaged as better than 5 % ( thats the best I can measure with a cheap chain gauge) and change chain at 1% worn.
Bike is used on off, road 25 % off road.
As its the first snapped chain I will persevere but this chain will keep the magic link for its life. Ho Hum......