Cody Stallings

Well a B-60 Duke, with a pair of PT6A -28s would be a nice start. Till one falls in my lap. It's Mooney for me.....

I agree it is a pain in the tail to have it done, ferry,downtime,ect.. We travel a few time a month to shops to do the inspection an dynamic balance while the planes are in for there yearly. On our rough ( rich) running bigbore 4 cyld engine the dynamic with the Chadwick, is a very good idea. Lets face it, vibration is a killer. Even low freq vibs that are hard to track down The HC-C3YR-1RF an the C424 take a lil more time than a C2YK or C53 &C214. But can be smoothed out no problem. Any prop with indicating red dyed oil should be balances as well. An a major plus is, it's easier on lord mounts, gyros, avionics, crankshaft seals,ect. Most times a balance of .25 I.P.S can't be felt by the driver. Fills smooth. When infact it can be alot smoother. Not trying to high jack the topic. Movin along now N74795 is right, the inspection is not a new thing. Been around for along time. But it is only on props bolted to large bore 4 cyld engines.Some on the 0-320 on twin Comanches, because they have extended hubs. You will notice, say a Cherokee 235, same hub as we all have, different blade (F8468) in most cases. But when on a O-540 it does not get affected by the AD. The reason being, the ignition pulses of the engine are smoother than a 0-360. Keeping them as smooth as we can is one of the best things you can do to prolong the life of a A suffix hub Thanks for the welcome Carusoam. Just became a Mooney Nut........ An lovin every min of my new illness...

McCauley oil filled there threaded an a few models of the threadless propellers......These propellers were not designed to hold oil.... Everyone will leak at some point, the Hartzell will be the same way.... When sealing a prop, it's being done static on a table or upright.... Then you bolt it on a engine flange, spin it 2700 rpms....... The blades that weight around 13lbs each, are now up around 20 tons on the primary thrust bearing. The hub under those conditions flex... That's just the way it is with the cast-aluminum hub... With the flexing, the oil will find its way out..... We do the eddy current test at our shop, an have yet to find a hub srap with a internal crack. But on the other hand, the so called B hub is a much more robust assembly on the inside than the A suffix hub. B hub is the way I would go, rather than the oil fill conversion. My 2 cents