Missus does occasionally go in the back as it's cheaper and quicker to visit family in Essex and Suffolk on the bike. When I had an R1 she cried as her knees hurt so much [emoji23] Sent from my iPhone using Tapatalk
So, anyway... It's a long list of parts gone. The crank snapped in two in the middle. The pistons are scored along with plenty of other bits. Probably cost what the bike is worth to fix. I'm feeling quite positive that the guy will claim manufacturing fault (although he couldn't explicitly tell me). I think they'll cancel the agreement and call it quits. Sent from my iPhone using Tapatalk
Wow. I have never seen a crank just snap like that! I can't think of anything else that would cause it except a casting/machining fault in the manufacture of the crank.
Basically what the guy said. He did say you could have had some play in the bearings causing it stress but he said that even that would have to be quite extreme and I'd have stopped riding as it would have been shaking so much Sent from my iPhone using Tapatalk
The bearings in the photo are shot... Look at all the brinelling (indentations) on the race Could be they got so worn that there was un due side loading put on the crank But as soon as loose bits of metal start flying around - who knows what went first.
I mentioned that but, like you say, he couldn't tell which went first but basically said even with knackered bearings the crank should not snap. Sent from my iPhone using Tapatalk
Bl&*dy heck me neither! Only ones I have seen snap were on old Brit stuff that could break where the crank-pin joined the web if the fillet radius was too small and created a stress raiser. I agree with the assessor, couldn't tell if the crank failed and took out the bearing or vice - versa.
Actually, looking at the picture of the part with the rods still attached again the break starts exactly where I just mentioned, at the fillet radius between the crank-pin and web. My money is on incorrect blend radius. Oh and I'm surprised it ran at all let alone ran noisily!
Got to very carefully point out that the assessor gave away nothing definitive. BlackHorse are the customer and his report goes to them. Don't want to fall foul should the wrong people read this. The Ducati engine specialist who stripped it gave his opinions and the assessor neither agreed nor disagreed but nodded his head with what was being said. He did say he had never seen a crank snap like this, especially not at 21k miles. Sent from my iPhone using Tapatalk
I'm so surprised it was still running. Didn't sound healthy which is why I stopped it but it ran and would pull pretty well. The break being at an angle must have meant it could still rotate. Not even an engine warning light. Sent from my iPhone using Tapatalk
Should it be determined it is a one off manufacturing fault I guess that is good news for all 2010 MS owners, and I suppose 2010 Ducati owners in general, and doesn't point to a widespread problem. Hopefully.
Depends which way around it happened. If the bearings did go and cause this, the bearings are a known issue based on the amount of people that have had failures. The engine guy said as much and said the early ones had the bearing issues. If the crank went and the odd motion caused the bearing to fail then yes, you are right it is a one off.
I'm off to Corsica on my 26k+ 10 plater in September, so I certainly hope so! Looking good for the OP's case though, not fit for purpose etc, unless he has secretly been running it at Santa Pod on Nitro?
How did it run at all like that? I thought is was running but really rough. You'd have thought it would have just gone bang. Good job yuo stopped riding it when you did.
