Just a heads up on this. We have had numorous McCauley 6" hub spoke cracks of the last few years. In fact, no one that I fly with still uses them. I realize we are a little rougher on our planes up here but keep in mind, we manage to crack them while using big soft tires. Frankly, I'm surprized there is not an A.D. out on them. I have never seen one fail completely but I sure wouldn't want to be the first to see how that goes.
So far, i have never found a crack in a Cleveland.
The original hubs were magnesium, and very prone to cracking, plus corrosion. Replacement hubs were aluminum. Noticeable weight difference if you held both of them, but not so prone to cracking. I suppose most of the MAG hubs are out of service, but now the years have taken their toll on the aluminum ones too.
I actually submitted an article for the 150 club newsletter in the early '80's right after the club was founded, but it seems Skip Carden was more interested in publishing articles on how to do things on the cheap, and many time illegal, than publish a serious maintenance article about what was a common problem at the time. It never got published that I know of.
Charles
