My RV-7 has had violent gear shimmy since first flight, occurred around 23 mph. I tried different tire pressure, different profile tires, wood slats, wrapping the main gear with carbon fiber, nothing worked. I took the gear to the manufacture, he said there should be about 1/2 degree to 1 degree of toe in. My gear has about 1/8 degree toe out on the left, and flush on the right. I just spent $600 on a new set of gear from Vans. Both had about 1/2 degree of toe in. The shimmy was GREATLY reduced. I added a sandwich strip of 10 layers of fiberglass sandwiched by carbon fiber, as posted by one of our other members (I apologize for not remembering the members name) attached to the main gear with stainless ADEL clamps. Not only is there no gear shimmy, but the landing loads are absorbed by the flex of the composite "yardstick" clamped to the trailing edge of the gear. After over 30 years, finally an idea that resolved this chronic issue! I have my RV grin back!
Gary Brown
DAR - Oregon
Gary Brown
DAR - Oregon