Hello all,
I’ve been chasing some pretty significant vibration that I feel especially strong in the area of the floor, seat, control stick, etc. I’ve checked and fixed all of the standard things like baffle to cowl, dynamic balance, loose stuff, etc, but it still persists. It’s worst at high power settings with lower RPM when the prop is at low pitch. Im starting to think I might have a hard to diagnose aerodynamic buffet coming off the prop and wonder if it could be vibrating my nose wheel fairing. I did a flight without the fairing last week and it seemed better but had to cut my flight short. My nose wheel fairing bracket does flex up and down a bit so I’m thinking of strengthening it. I checked and the nose wheel does rotate in flight (Berringer sealed bearing) but only about 150 RPM so I don’t think that’s fast enough to cause the higher frequency vibration I’m feeling.
Anyone have any more ideas or has anyone ever tried strengthening the nose wheel fairing?
I have a Barrett 540, EFII System 32, Whirlwind HRT 375, and a Showplanes Cowl.
I’ve been chasing some pretty significant vibration that I feel especially strong in the area of the floor, seat, control stick, etc. I’ve checked and fixed all of the standard things like baffle to cowl, dynamic balance, loose stuff, etc, but it still persists. It’s worst at high power settings with lower RPM when the prop is at low pitch. Im starting to think I might have a hard to diagnose aerodynamic buffet coming off the prop and wonder if it could be vibrating my nose wheel fairing. I did a flight without the fairing last week and it seemed better but had to cut my flight short. My nose wheel fairing bracket does flex up and down a bit so I’m thinking of strengthening it. I checked and the nose wheel does rotate in flight (Berringer sealed bearing) but only about 150 RPM so I don’t think that’s fast enough to cause the higher frequency vibration I’m feeling.
Anyone have any more ideas or has anyone ever tried strengthening the nose wheel fairing?
I have a Barrett 540, EFII System 32, Whirlwind HRT 375, and a Showplanes Cowl.