“New Lambretta Roller-Chain Tensioner”
here is some pictures of a new roller-bearing type chain adjuster that designed by UK Lambretta men , it helps when messing about with stretched chains and different sprocket set ups and it gives 24mm of adjustment .I thought that I was a nice design for this to reduce the friction loss, and to be able to give a good gearing choice.
It’s currently being tested in UK. When I get new information. I will inform of it on LamMag again.