I am still trying to locate an annoying vibration that only occurs when applying power, but not when coasting. My Schwinn S-600 has a new motor with 15T roller clutch, controller, chain, tire and tube, but the vibration persists.
I have used Slime in 3x heavy duty tubes for many years, which prevents explosive blowouts. Could 4 oz. be too much in a 12.5 x 2.25 tube? What is the appropriate amount? The Slime website calculator recommends 1.8 oz. And yet, if the vibration is from congealed Slime, then why when only under power and not while coasting? My next test is to replace the tube without Slime so I can eliminate that as the cause, but I hate to give up the protection. I am at wits end and any thoughts would be appreciated.