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Murray, can you give us a photo or drawing?Tim McClure
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Murray, what is this "common thread" please?Aussie Paul. [
]www.firebirdgyros.com
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Murray, was it a 19mm or a 25mm thick hub bar? Is this issue discussed on the US forum and what has Ernie have to say about this?
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The common thread seems to be "Working gyro's".Allthough this type of flying has been going on for years its only now we are seeing a problem.Barry,as they were only 26' blades it was a 19mm hub bar,25mm on 27'and over.
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Birdy, Rotor bearings are supplied out of the box prepacked from Rosco and are not cheap. There does not seem to be any stipulations or provisions in the AD for different sized hub bars 19mm or 25mm on different machines. Is the "common trend" on working single seat machines that have had failures or failed the AD limited to 19mm hub bars or is there reported failures on 25mm hub bars? A lot of these single seat working machines run 25mm hub bars on 26 ft blades. The reason I am asking these questions is not because I'm trying to be a smart a*se but because these AD's have been imposed without any compliance periods. There are not that many blade manufacturers in Aus. Most every Tom, Dick and Harry west of the Divide has had to order a new set of blades. What is the back order time? Deano
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Repacked??The ones I get off Rosco only had that 'grissle grease' init.Don't suppose you'd know wot sorta grease Rosco uses?Ignorance is bliss............but only till you realise you were.You can always get the answer you want, if you ask enough experts.
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Just to confuse the issue even further Deano, Rob Patroney uses 27 mm hub bars on the 27' 6" ones I have so whats the breaking point with those ?? I understand your frustration. You only need a new hub bar, the actual rotors are in most cases just fine. Rob has said he believes his rotors are good for 5000 hours so as long as no damage has occured to the blades, just get new hub bars.I'm going to send off my old hub bar [27mm] for testing. They have about 700 hours up and I will be amazes if there is any sign of cracking !!!Brian
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