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Old Mar 12th 2018, 12:36 PM   #1
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V4S Chain Slap

Noticed today that the chain is slapping the swing arm on decel. Is this normal for Ducati bikes? The bike has 8 miles on it.
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Old Mar 12th 2018, 01:18 PM   #2
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The chain should not be coming into contact with the swing arm at any point, either accelerating or decelerating - take it back to the dealer.
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Old Mar 12th 2018, 01:18 PM   #3
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no tighten the chain
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Old Mar 12th 2018, 02:34 PM   #4
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Has it marked or damaged the swing arm ?
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Old Mar 12th 2018, 04:06 PM   #5
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Is it right when you close the throttle? If so, mine does too... I just noticed it today. But I watched my tech adjust the chain before delivery as I swapped on a DID VX chain. Going to bring it in next week sometime to check.

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Old Mar 12th 2018, 06:26 PM   #6
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Originally Posted by BenF04 View Post
Has it marked or damaged the swing arm ?
There are marks but I can't tell if it has removed paint or damaged. I'll need to remove the grease from the swing are to confirm either.

Originally Posted by reganc View Post
no tighten the chain
I won't be doing this because 1) I dont know the proper amount of slack and 2) it's still under warranty. the dealer can deal with it.

Originally Posted by Nitrouz View Post
Is it right when you close the throttle? If so, mine does too... I just noticed it today. But I watched my tech adjust the chain before delivery as I swapped on a DID VX chain. Going to bring it in next week sometime to check.

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It's not right when I close it, it's more as I'm slowing down to turn a corner and it's still in gear. It's slaps multiple times, not just once. I can feel it in my left foot.

I called my local dealer (not where I bought the bike) and their Ducati mechanics are at training and will be back Thursday.

It's supposed to be nice here on Friday so I'm going to try to get some more miles on it and see when and how often it does it on a longer ride.
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Old Mar 12th 2018, 06:29 PM   #7
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Interesting. Mine just does a quick slap once everytime I close the throttle. I saw where it was hitting... On the bottom of the swing arm close to the rear. I saw some extra grease there. The ducati tech just swung by my place and saw the slack was in spec, but also saw where it was hitting. Will try to find out more this week.

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Old Mar 12th 2018, 07:00 PM   #8
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It has a big arse sticker on the swingarm giving you were to measure and how much slack.

The adjustment tool can also be bought from ducati or aftermarket.
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Old Mar 12th 2018, 07:16 PM   #9
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Owners manual explains where the measure and how much slack is required. Since this is/should be considered regular maintenance I do not think that I would ignore it and rely on the bike being under warranty
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Old Mar 13th 2018, 07:58 AM   #10
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Originally Posted by Nitrouz View Post
Interesting. Mine just does a quick slap once everytime I close the throttle. I saw where it was hitting... On the bottom of the swing arm close to the rear. I saw some extra grease there. The ducati tech just swung by my place and saw the slack was in spec, but also saw where it was hitting. Will try to find out more this week.

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Looked at it again this morning and appears to be contacting on the plastic guard on top of the swingarm and also on the bottom. There is a nick of paint missing from the swingarm on the bottom as well.

Originally Posted by Halo2 View Post
It has a big arse sticker on the swingarm giving you were to measure and how much slack.

The adjustment tool can also be bought from ducati or aftermarket.
Perhaps I will purchase one in the future, but having never owned a single sided swing arm bike, I'm reluctant to try adjusting it in fear of screwing something up or doing it incorrectly.

Originally Posted by burton View Post
Owners manual explains where the measure and how much slack is required. Since this is/should be considered regular maintenance I do not think that I would ignore it and rely on the bike being under warranty
I'm not going to ignore it. However, I wouldn't consider it "regular maintenance" after 8 miles. I would say that it was missed TWICE. First at the QC check at the plant and second during the PDI at the dealer. Rather disappointing actually.

I did check it myself and it is out of spec...by quite a bit actually. The owners manual doesn't provide instruction on how to adjust. All it says is "Have chain adjusted by a Ducati Dealer or Authorized Service Center".

The instructions are not insanely clear on where to measure from. The plastic guide on the bottom of the swing arm has a step on it and it's not clear which step you are supposed to measure from. I also am not sure if I'm supposed to put the bike on it's kick stand or on an actual rear bike stand (which I don't have yet for this bike) when performing the measurement.
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