tension

I have just noticed that the sidestand spring on my bike (about 3 weeks old!) is loose and allows the sidestand to move up and down when in the up position - i.e. loose and floppy as if the spring has somehow lost it's tension. Anyone else had this occur? I think I will take it up with my local...

So Friday I got some new PR4's fitted, whilst fitting the back wheel I screwed the cheese blocks (chain tensioner blocks made from Edam I think) I had read somewhere on this forum someone had used the R&G, I had a look and they seem more practical since the axle head is captive both sides and...

I was riding on the highway when my chain jumped off my rear sprocket, all probally due to a way to loose chain. In the meanwhile i have tightened my chain to a reasonable tension. But i was wondering how tight my chain should be. On the tightest part it has about 1cm space and on the loosest...