Rear wheel torque - MVAgusta.net
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post #1 of 25 (permalink) Old 04-27-2016, 11:42 AM Thread Starter
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Rear wheel torque

Now I know we've done the torque thing to death on here but bear with me.
Am I being completely stupid here or does the sprocket side nut on the Dragster/B3 etc also have a very high torque setting. In the manual I have it says 200-220NM.
So today was the first proper ride of the Dragster after getting it back from the dealer and I'd noticed some strange clacking etc from the rear wheel, had a quick nosey out on the ride n all looked ok, retaining clip was in properly etc.
Get home and a proper look in the garage, I take the clip/ring out and find that the nut isn't even finger tight, it is completely loose. It also looks like there's some scoring on the end of the spindle, so I'm thinking the retaining clip was put on around the nut but not properly through one of the retaining holes, therefore allowing the whole thing to slowly slacken itself off. Is my dealer trying to kill me ? they had the wheel off when it was in !!!
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post #2 of 25 (permalink) Old 04-27-2016, 11:56 AM
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Yes, it's about the same, but just a bit less torque will also do.

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post #3 of 25 (permalink) Old 04-27-2016, 12:01 PM
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First, if your dealer had the wheel off, they would not need to loosen the nut on the sprocket side. The nut on that side is not touched for wheel removal/tire changes or not even for chain adjustment. Not the dealer's fault.

However, this nut should have been checked during pre-delivery inspection before the bike was sold new. We have seen a few new bikes with this nut not torqued properly from the factory. Probably the ones that were done right before lunch break.

That is the dealer's fault for not checking before selling the new bike.
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post #4 of 25 (permalink) Old 04-27-2016, 12:32 PM Thread Starter
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Yeah I know they don't need to take that nut off for wheel removal but it was never loose before, I'm pretty sure of it as there are quite new looking scores around the spindle where the retaining clip will have been running round since it wasn't in the hole properly.
I've done over 10,000km on it so I'd be pretty surprised if it was like that from factory and I do tend to check my bike a lot when cleaning.
Anyway, I'm still alive and it's sorted

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post #5 of 25 (permalink) Old 04-27-2016, 04:08 PM
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Jogort, it is entirely possible the nut loosened due to riding. I know people have recommended lower torques specs for certain things; but, a recent experience for me bolsters what I know about torque specs: They are there for good reason.

Some know I am rebuilding a Ducati Monster S4Rs. I am also fairly particular about all things torqued. On that bike, when I went to remove the rear sprocket carrier, it, too was only finger tight! I was so astonished that I sent a video to a riding friend.

Things loosen up for many reasons over time.

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post #6 of 25 (permalink) Old 04-27-2016, 04:30 PM Thread Starter
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Yeah you're probably right, the retainer clip probably just want sticking in properly and allowed the nut to loosen off. Was more of a rant really after just getting it back from the dealer and them having the wheel off.
Just scares ya a little when you've been out on a spirited ride all day and find the nut bloody loose :O

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post #7 of 25 (permalink) Old 04-27-2016, 04:38 PM
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My retainer clip was properly seated.

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post #8 of 25 (permalink) Old 04-27-2016, 05:15 PM
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That nut is famous for coming loose. Check it when you clean your chain. I also recommend purchasing the 55mm death socket coffe cup from design corse. Worth every penny.

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post #9 of 25 (permalink) Old 04-28-2016, 07:17 AM
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I put witness marks on both those axle nuts and any that are touched for that matter so they can be checked at a glance
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post #10 of 25 (permalink) Old 04-28-2016, 10:06 AM
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Wow. Better give that a gander.
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