Thanks for the advice guys... chain seems to be holding up since. Just waiting for the replacement to arrive. I am tempted to leave the chain on until it fails again. Seeing as I always have the hub motor which will glide me home at 20mph isnt too much of an issue if it fails a bit away from my destination.
One thing I did notice when I was repairing the chain, was the tensioner on it seems to be offset. Meaning the chain is not linear from the tensioner to the rear sprocket. Maybe about 10-15 degree angle when on the highest gear (further out from centre of the wheel). I am planning on contacting ultramotor to see what there opinions are of this.
In my opinion a chain should be as linear as possible, chains arent design to have laterial movements. The chain broke in a way the would enforce this. The two slide plates around the pin seem to have spread and bent outwards. This would indicate the laterial movement on the chain is damaging the links. Bad engineering!
I notice on the top part of the tensioner, the sprocket slides but on the bottom half which leads to the derailluier it is fixed. Surely if the sprocket had to be in a fixed position it should be in the middle of the chain gear on the rear wheel meaning that when in the middle gear it is perfectly linear, and slightly out in the top and bottom gears, causing less lateral wear to the chain. At the moment the sprocket seems to be in line with the lowest gear or maybe even further in(closes to the middle of the wheel) and seeing as it is the gear which I use least seems a little pointless.
Btw I did pop the pin all the way out, but I also managed to get it back in, although I do have a few workshops and tools available to me at work lol..
what your guys opinions of the chain and the set-up? I have included a link to picture of the set-up below.
Last edited by A2BMetro; 09-06-10 at 02:49 PM.