New tire, new shimmy
A few days ago I replaced the nose tire and tube on my RV-7A due to a worn tube. Nose wheel has been modified by anti splat with sealed bearings, and
previously had been balanced. On takeoff roll with the new tire and tube I noticed a slight bumping during and after the ground roll. "dang" I thought to myself, new tire isn't balanced as perfectly as the old one. No big deal I thought, until I landed. Normal landing, but when I let the nose gear touch I felt a split second of shimmy, which then stopped. I went around the pattern again to confirm, and same thing happened. I've never had any shimmy at all in my airplane, guess its time to pull the tire back off and balance it.
Flying RV-7A With SDS Electronic fuel injection
ATP CFI A&P