Ducati Monster Forum

Moto Board => Tech => Topic started by: stopintime on April 03, 2010, 10:16:55 AM

Title: Clutch is starting to slip (APTC wet)
Post by: stopintime on April 03, 2010, 10:16:55 AM
I guess it's to be expected, 22.000 miles. Maybe just a little early....
All kinds of riding, all services done, regular oil change 15/50 Shell.
It started late last year and it's noticeable, not bad yet, at heavy throttle twists at 6-7-8k revs.
There is and has always been appropriate freeplay at the lever.

What kind of labor charge (hours) do you think I should expect from my dealer?
MonsterParts has a Barnett wet clutch pack at $190. Pros & cons compared to what?
Do I need to prepare myself for the cost of a new basket as well, or will they normally last longer than the friction plates?

Thanks [thumbsup]
Title: Re: Clutch is starting to slip (APTC wet)
Post by: Popeye the Sailor on April 03, 2010, 10:39:47 AM
Just out of curiosity.....is that oil you mentioned motorcycle specific?
Title: Re: Clutch is starting to slip (APTC wet)
Post by: Speeddog on April 03, 2010, 11:31:10 AM
One of my customers has an '05 S2R 800, has the same APTC clutch.

His clutch started slipping, I replaced it at 35k miles with a Barnett pack.

He's not all that impressed with it.  :(
Title: Re: Clutch is starting to slip (APTC wet)
Post by: stopintime on April 03, 2010, 11:35:33 AM
Quote from: MrIncredible on April 03, 2010, 10:39:47 AM
Just out of curiosity.....is that oil you mentioned motorcycle specific?

It's what my dealer use. Shell Advance Ultra, full synthetic motorcycle oil.
At least that's what they say and I have no reason to think otherwise.

Quote from: Speeddog on April 03, 2010, 11:31:10 AM
One of my customers has an '05 S2R 800, has the same APTC clutch.

His clutch started slipping, I replaced it at 35k miles with a Barnett pack.

He's not all that impressed with it.  :(

With the Barnett or the stock clutch?
What do you recommend and how do they compare, quality and price?
Title: Re: Clutch is starting to slip (APTC wet)
Post by: He Man on April 03, 2010, 11:57:28 AM
i wonder wats up with the barnett packs, i dont like them for dry clutches either. they are cheaper than OEM by far, but the OEM packs are the best (dry clutch wise) might be the same for wetclutch too.
Title: Re: Clutch is starting to slip (APTC wet)
Post by: caperix on April 03, 2010, 03:14:31 PM
The basket should still be good, the labor for the plates should only be a few hours they are easy to replace.  The APTC's to get very sensitive to oil choise as they wear.  It may be worth it to try a different oil to see how it reacts.  I always found my bike liked the mobil 1 10w40 motorcylcle synthetic the best.
Title: Re: Clutch is starting to slip (APTC wet)
Post by: 2 Wheel Wanderer on April 03, 2010, 08:50:17 PM
I cant imaging them charging you more than a couple of hours; did mine myself with a service manual and it took me a bit more than that but I was being super careful. I bought the "heavy duty" OEM clutch from Munroe and am very happy with it; changed my clutch out at 25K and I have almost 40K on it now.
Title: Re: Clutch is starting to slip (APTC wet)
Post by: moto-zen on April 04, 2010, 05:14:32 AM
Definitely sounds like the plates. If the basket was worn you would have the opposite problem (i.e. clutch drag).
Title: Re: Clutch is starting to slip (APTC wet)
Post by: CairnsDuc on April 04, 2010, 11:25:09 PM
Just a quick FYI, this is a topic I did in the Tutorial section about checking the Clutch nut,
This should be more than enough info to change the clutch pack.

did the whole job in about 2 hours start to finish.

http://ducatimonsterforum.org/index.php?topic=31110.0 (http://ducatimonsterforum.org/index.php?topic=31110.0)

Hope this helps  [thumbsup]
Title: Re: Clutch is starting to slip (APTC wet)
Post by: stopintime on May 20, 2010, 04:56:26 AM
New clutch pack in today. Done by my dealer in less than two hours.
The steel discs had visible burn marks and maybe they're not straight any longer, but the friction discs were less than half way worn down.

(http://i329.photobucket.com/albums/l394/stopintime/clutch004.jpg)

(http://i329.photobucket.com/albums/l394/stopintime/clutch003.jpg)
Title: Re: Clutch is starting to slip (APTC wet)
Post by: BK_856er on May 20, 2010, 06:43:48 PM
Did the new clutch pack solve your slipping?

BK
Title: Re: Clutch is starting to slip (APTC wet)
Post by: stopintime on May 20, 2010, 10:13:58 PM
Quote from: BK_856er on May 20, 2010, 06:43:48 PM
Did the new clutch pack solve your slipping?

BK


Yes, so far - I haven't pushed it very hard yet though. I was adviced to be easy on the clutch the first few days, to bed it in, much like new brake parts I guess.