Guest burty Posted March 2, 2012 Share Posted March 2, 2012 Have a 850 hour Rotax with crack in #2 cyl area, eng s/n not subject to SB inspection, any one else had this experience? Link to comment Share on other sites More sharing options...
Guest Crezzi Posted March 2, 2012 Share Posted March 2, 2012 I pressume the SB you are referring to is SB-29 ? How much oil is leaking & can you post any photo's. Cheers John Link to comment Share on other sites More sharing options...
Guest burty Posted March 4, 2012 Share Posted March 4, 2012 John Yes it is SB-29. The oil level was still OK in tank but had started to film on NLG and on top of engine, plus cowling. Also some in L/H carb drip tray. Will try and get some photos next time I am up at the airfield. gb Link to comment Share on other sites More sharing options...
facthunter Posted March 4, 2012 Share Posted March 4, 2012 Is it a crack, porosity or an "O" ring not fitted/damaged? I wouldn't keep using it, till you know, unless Rotax have a history and recommendation as to continued use and inspection. (Which is unlikely)..It is an aircraft motor after all. Some cracks are permitted for a while, under strict conditions in some motors, but shouldn't be regarded as normal or acceptable without approval. Nev Link to comment Share on other sites More sharing options...
Guest burty Posted March 4, 2012 Share Posted March 4, 2012 Nev Definitely a semi circle crack in the area shown in SB, acft has been grounded until we can find a replacement eng. Quote for crankcase replacement from NZ agent is $12,000NZ so we are on the hunt for new eng. gb Link to comment Share on other sites More sharing options...
eightyknots Posted March 5, 2012 Share Posted March 5, 2012 NevDefinitely a semi circle crack in the area shown in SB, acft has been grounded until we can find a replacement eng. Quote for crankcase replacement from NZ agent is $12,000NZ so we are on the hunt for new eng. gb That sounds v-e-r-y expensive. Is it worth it, or perhaps replacing it with, say, a Viking engine? Link to comment Share on other sites More sharing options...
facthunter Posted March 5, 2012 Share Posted March 5, 2012 It IS expensive. In the absence of abuse Iwould wonder why the total cost should be borne by the purchaser. Perhaps there was something wrong with the quality control of the manufactured product as supplied. It wouldn't cost Rotax a heap to back this product. I wouldn't just cop this. Go further. Nev 1 Link to comment Share on other sites More sharing options...
Wayne T Mathews Posted March 5, 2012 Share Posted March 5, 2012 It IS expensive. In the absence of abuse Iwould wonder why the total cost should be borne by the purchaser. Perhaps there was something wrong with the quality control of the manufactured product as supplied. It wouldn't cost Rotax a heap to back this product. I wouldn't just cop this. Go further. Nev Hear hear... Link to comment Share on other sites More sharing options...
Guest Maj Millard Posted March 6, 2012 Share Posted March 6, 2012 Can we see some photos, 912s are not known for cracking at those hours. The SB was applicable to certain S/nos only. I do a lot of services on 912s, and haven't found a cracked case yet. I inspected my own 912 uls on the week end and... no cracks. I did find that a small oil seep that I have had for some time, is still there. It is at the fwd plug where you would alternatly fit the oil outlet line. It's really not big enought to worry about at this stage, and certainly not something I would ground the aircraft for. I would of course remove the plug and reseal it if it wasn't for an engine mount tube in the way. I'll keep an eye on it and wipe it with a rag every 50 hrs................................Maj... Link to comment Share on other sites More sharing options...
Guest burty Posted March 6, 2012 Share Posted March 6, 2012 Maj, will follow up with photos next time I am at airfield. Used Ardrox developer on the crankcase half to confirm crack described above. Local Rotax agent quoted Rotax agreeing to subsidise repair so I guess that means they are aware of a bigger problem than the SB alluded to. Quote was 50% discount on new crankcase AU $7000 + freight as opposed to AU $12000 + freight. Link to comment Share on other sites More sharing options...
facthunter Posted March 6, 2012 Share Posted March 6, 2012 Have you got the total cost of strip and assembly included in your calculations? There would be a few other items that would normally be replaced as a matter of course during a rebuild. Nev Link to comment Share on other sites More sharing options...
Guest burty Posted March 6, 2012 Share Posted March 6, 2012 Nev, The quote for labour and materials was NZ $4000 but I suspect that is just the starting point. gb Link to comment Share on other sites More sharing options...
Guest burty Posted March 8, 2012 Share Posted March 8, 2012 Photos of crack, new eng scourced from Melbourne Megabucks! Link to comment Share on other sites More sharing options...
Guest burty Posted March 8, 2012 Share Posted March 8, 2012 Sorry guys wont let me upload files. Link to comment Share on other sites More sharing options...
Guest burty Posted March 12, 2012 Share Posted March 12, 2012 Photo of crack Link to comment Share on other sites More sharing options...
Guest burty Posted March 29, 2012 Share Posted March 29, 2012 New engine fitted, prop overhauled everything is sweet in the world of ZK-TNM Link to comment Share on other sites More sharing options...
skeptic36 Posted March 29, 2012 Share Posted March 29, 2012 New engine fitted, prop overhauled everything is sweet in the world of ZK-TNM Yeah but what about your bank managers world? Link to comment Share on other sites More sharing options...
eightyknots Posted March 29, 2012 Share Posted March 29, 2012 New engine fitted, prop overhauled everything is sweet in the world of ZK-TNM Hopefully, much of the cost was covered by some kind of warranty, burty. Link to comment Share on other sites More sharing options...
Guest burty Posted March 29, 2012 Share Posted March 29, 2012 No waranty, no insurance at this stage, bank Manager not involved, but cost per person reasonable - major benefit of a syndicate Link to comment Share on other sites More sharing options...
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