Propman13
Member
- Joined
- Feb 11, 2014
- Messages
- 6
- Reaction score
- 0
Shudder in my 67 pa-32-260.
Background: 15 hours out of overhaul by a well known shop. Overhauled engine, engine mount, and governor. Replaced with new: new top prop 3 blade propellor, new engine mounts. Basically, from firewall forward replaced with new or had overhauled.
Issue: Since overhaul. When reaching assigned altitude after take off I reduce manifold pressure to 23.6 and as I pull back on the throttle a shudder is felt starting from the front of the airframe and exits the rear. It's about 6 cycles in total, kind of like a thud, thud, thud, thud thud, thud. It's large enough that it feels unsafe. This is the only time I can make this happen during flight.
I have called Hartzell, lord, my IA, and a couple prop shops and no cause can be found yet. Just had a annual done and nothing came up. I never had the shudder before overhaul and prop conversion.
Anyone?
Background: 15 hours out of overhaul by a well known shop. Overhauled engine, engine mount, and governor. Replaced with new: new top prop 3 blade propellor, new engine mounts. Basically, from firewall forward replaced with new or had overhauled.
Issue: Since overhaul. When reaching assigned altitude after take off I reduce manifold pressure to 23.6 and as I pull back on the throttle a shudder is felt starting from the front of the airframe and exits the rear. It's about 6 cycles in total, kind of like a thud, thud, thud, thud thud, thud. It's large enough that it feels unsafe. This is the only time I can make this happen during flight.
I have called Hartzell, lord, my IA, and a couple prop shops and no cause can be found yet. Just had a annual done and nothing came up. I never had the shudder before overhaul and prop conversion.
Anyone?
