ok, i've read the threads on prop balancing, etc. But this one has me a bit baffled (and not the kind you rivet and swear at..)
I have 175hrs on the Aerosport O-360, 9.2-1's, LSE, Slick Mag, Hartzell BA72" CS prop set-up in my -7A. On a long cross country a few weeks ago at 9,500, 2400rpm, 100ROP I notice a slight rythmic vibration that varies with rpm.
That's funny! Never been there before. Not bad but I can just notice it in the CDI needle shake and on my PDA screen shaking a bit. Ok, land at home base. Check the spinner screws = tight, check prop blades with twisting = ok, Check engine mount bolts = ok.... what gives? the plane was painted 80 hrs ago and the shake just shows up?
can a new prop suddenly go out of balance or track at 175hrs?
Jeff - slightly vibrating in OH
I have 175hrs on the Aerosport O-360, 9.2-1's, LSE, Slick Mag, Hartzell BA72" CS prop set-up in my -7A. On a long cross country a few weeks ago at 9,500, 2400rpm, 100ROP I notice a slight rythmic vibration that varies with rpm.
That's funny! Never been there before. Not bad but I can just notice it in the CDI needle shake and on my PDA screen shaking a bit. Ok, land at home base. Check the spinner screws = tight, check prop blades with twisting = ok, Check engine mount bolts = ok.... what gives? the plane was painted 80 hrs ago and the shake just shows up?
can a new prop suddenly go out of balance or track at 175hrs?
Jeff - slightly vibrating in OH