tdavis1198
Member
Looking for some ideas from the brain trust. I have a RV-8 (not the original builder) that I purchased in 2020. It was completed in 2019. The builder is very experienced and well known. The plane performed really well until we had it painted. Since then there has been intermittent Tail Shaking first detected on the flight back from the paint shop.
My research has shown that this seems to be a known aerodynamic issue with the RV-8 design where there is pronounced tail buffeting/shaking just prior to stall due to dirty air flowing over the wing roots and down to the tail.
Our testing has found that this occurs at about 67kt clean and the tail shaking is bordering on quite violent when it happens.
My real question is why this issue would suddenly start occurring after paint. We have checked and re-torqued all the attachment bolts in the empennage and everything looks good.
Any ideas?
My research has shown that this seems to be a known aerodynamic issue with the RV-8 design where there is pronounced tail buffeting/shaking just prior to stall due to dirty air flowing over the wing roots and down to the tail.
Our testing has found that this occurs at about 67kt clean and the tail shaking is bordering on quite violent when it happens.
My real question is why this issue would suddenly start occurring after paint. We have checked and re-torqued all the attachment bolts in the empennage and everything looks good.
Any ideas?