I like to clean my chain with WD-40 and then lube with gear oil. My chain stays very clean and i have no fly off. I wipe the chain with a rag after the gear oil application. I have heard that some say WD-40 is not good for the o-rings in the chain. So here is my test:
I have 2 identical o-rings and measured them with a calibrated micrometer.
I soaked one in a cup with WD-40 submerged in WD-40 for 1 week. I them measured both o-rings (cross section and od-id)
Then i let both dry out for one week, and they both always measured the same.
So my conclusion is that WD-40 is safe for o-rings and i will continue to use it.
P.S. i have use chain wax and it leaves the chain looking dirty and oily, Now with the WD-40 and light coating of gear oil, mine looks shiny and clkean.
I have 2 identical o-rings and measured them with a calibrated micrometer.
I soaked one in a cup with WD-40 submerged in WD-40 for 1 week. I them measured both o-rings (cross section and od-id)
Then i let both dry out for one week, and they both always measured the same.
So my conclusion is that WD-40 is safe for o-rings and i will continue to use it.
P.S. i have use chain wax and it leaves the chain looking dirty and oily, Now with the WD-40 and light coating of gear oil, mine looks shiny and clkean.