I have an Electra Townie 8i with Shimano Nexus components. Every time I remove the rear wheel it is a major PITA to adjust the chain tension when putting back the wheel again. Is there some smart way to do this I am not aware of?
Currently I put the wheel back but let the chain remain off, that is not running on the rear chainring (it is still on the front chainring). I then have to "bend" the chain and rotate the front chainring to make it "enter" the rear chainring (similar to how you restore a chain that has fallen off a bike with multiple chainrings and a derailleur). This makes it hard to know when the wheel is in the right position. It is a very small adjustment between "easy to make the chain run on the rear chainring but too loose" and "impossible to make the chain 'click on' the rear chainring because it is too tight".
It seems this is a known problem: according to this video (at 6m00s), other versions of Shimano Nexus have some special kind of washers that you can use to adjust the tension after you have put back the wheel, but I don't have them. Could I buy these "washers" and use on my setup?