I-BMW.com I-BMW.com

Welcome to the I-BMW.com forums! - You're currently viewing as a limited access guest. By joining our free member supported community, you'll gain access to post/ reply, communicate privately with other members (PM), or globally via "real time chat", respond to polls, upload photos, post classifieds etc. Membership is fast so, Register @ the Ultimate Sport Touring Portal!
Should you not receive an email with activation link, check your SPAM settings or please contact us and include the ID/ email address you registered with.

Go Back   I-BMW.com > BMW K-1300 Series Motorcycles > K1300S > "K13S/R" Technical Q&A
User Name
Password
Home Register Gallery Classifieds FAQ Members List Calendar Donate Mark Forums Read

"K13S/R" Technical Q&A K1200S/R Technical Questions/Answers

Vendor Sign Up | Want to see your name in neon blue? | Want a neat reflective sticker for your ride?!

Reply
 
Thread Tools.. Display Modes
  #1  
Old 06-20-2013, 12:21 PM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Clutch Rattle

(I searched the forum and did not see this specific question.)

My 2013 K1300S just had the 600-mile service done yesterday. I noticed this "problem" before, but noticed it more yesterday when I was riding "faster" after the service.

Sometimes, but not always, after running awhile in 5th or 6th gear, after I downshift to 1st when coming to a stop (and I am downshifting through the gears gradually as the bike slows down), when I release the clutch lever at the last 10-15 mph I feel a "rattle" through the clutch lever as the clutch is engaged (which stops once the clutch is fully engaged) to engine brake. Is this "normal" for a K1300S? Thanks.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #2  
Old 06-20-2013, 12:42 PM
K13Mike's Avatar
K13Mike K13Mike is offline
Living the Dream
Post: 1,604 Thanks: 186
Thanked 811 Times in 390 Posts
 
Join Date: Jan 2013
Location: Calgary, Alberta., Canada
Re: Clutch Rattle

Hi Mike, I am another Mike with a 2013, I have about 1200 miles on mine. I generally do not gear down into 1st, I usually will gear down to second and then throw it into neutral and brake from there. I have not observed any such symptoms on mine.

One thing I have noticed a little however is when I take off from a stop in stop and go traffic without giving it much gas I can feel a minor transient pulsation through the drive train when I release the clutch, I am not certain if this is some sort of clutch issue or just the individual pulses of each cylinder firing at very low rpm..I suspect it is the latter.

Torrential rain here for the next couple of days, I will try some gearing down into 1st next time I am out to see I experience anything similar, if I do I will report back.
__________________
2013 BMW K1300S Black
2013 Yamaha XT1200 Super Tenere White
1983 Suzuki GSX1100S Katana Silver
Reply With Quote
  #3  
Old 06-20-2013, 11:37 PM
elp_jc elp_jc is offline
Can assemble bike blindfolded
Post: 3,151 Thanks: 1
Thanked 97 Times in 92 Posts
 
Join Date: Jun 2003
Re: Clutch Rattle

Quote:
Originally Posted by K13Mike
One thing I have noticed a little however is when I take off from a stop in stop and go traffic without giving it much gas I can feel a minor transient pulsation through the drive train when I release the clutch, I am not certain if this is some sort of clutch issue or just the individual pulses of each cylinder firing at very low rpm..I suspect it is the latter.
Yep, engine rattling/vibrating in protest when lugging the engine. Normal.

I also rarely downshift to 1st at stoplights (unless it just turned green, but I hardly ever ride in traffic anyway), so can't comment on the OP's issue. But sounds normal to me.
Reply With Quote
  #4  
Old 07-08-2013, 01:55 PM
K13Mike's Avatar
K13Mike K13Mike is offline
Living the Dream
Post: 1,604 Thanks: 186
Thanked 811 Times in 390 Posts
 
Join Date: Jan 2013
Location: Calgary, Alberta., Canada
Re: Clutch Rattle

I had my first experience with this yesterday. I had returned from a long spirited ride in the mountains which involved quite a bit of shifting and found myself in bumper to bumper stop and go traffic. I geared down into second gear at very low speed, I am sure rpms were very low, definitely engine lugging territory. When I released the clutch it did not slow the bike, it rattled quite loudly and I immediately pulled the clutch back in to make it stop. I tried it again and sure enough the same thing happened.

I think it may have been the drive train rattling as the dive shaft slack was slapping back and forth with protests of the lugging engine and engaging clutch. I should have had the rpms a little higher I think.

After that I made sure that if I downshifted I was above 2500rpm and no more problem (possibly a bit of initiation shudder as the clutch engaged on the downshift however).

I only have 3000km on the odometer.

Although I have not babied the bike, in hindsight I have babied the clutch. The next time I am out I am going to head out to a quiet area and do some very vigorous launches and put the clutch through the paces, see how it performs and make sure it is well broken in.
__________________
2013 BMW K1300S Black
2013 Yamaha XT1200 Super Tenere White
1983 Suzuki GSX1100S Katana Silver
Reply With Quote
  #5  
Old 07-09-2013, 09:23 PM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

K13Mike - Thanks for the input. I am leaving Saturday for a 5,000+ mile trip to Salem, OR (the bike has 1,700 miles on it now), so I will definitely get to play with this some on my trip.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #6  
Old 07-09-2013, 11:34 PM
Beech's Avatar
Beech Beech is online now
I-BMW Rider of the Year 2016
Post: 6,570 Thanks: 1,628
Thanked 1,544 Times in 1,183 Posts
 
Join Date: Nov 2003
Location: mount vernon, WA usa
Re: Clutch Rattle

Technique....and most bikes don't like downshifting into 1st if your moving much over 15. Rev matching is important.
__________________
Beech Arriba, Abajo, Al Centro, Adentro
Mount Vernon Cannon Works
K1300S
S1000R
I need a Vespa
I change your tires, you buy them on the web, I do the work $40, trying to keep riders on the road.
Reply With Quote
  #7  
Old 07-10-2013, 10:09 AM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

Quote:
Originally Posted by Beech
Technique....and most bikes don't like downshifting into 1st if your moving much over 15. Rev matching is important.

Yes, I realize that my technique could be the cause, but I have been using this same technique for 25 years on single-plate and multi-plate DRY clutches on various BMWs and Ducatis (including an R1100S in the Alps) and do not remember ever feeling this "rattle" before. I don't downshift to 1st until the bike is almost stopped (<15 mph), and I also sometimes feel it when downshifting and engaging the clutch in higher gears.

It may be that the K1300S wet multi-plate clutch just does not like to be feathered when you engage the clutch on downshifts, but prefers to just have the clutch lever released and the clutch engaged quickly. That's what my dealer tells me. I'll play with this during my upcoming trip, which will have a lot of riding in the mountains, and see if I just need to modify my downshifting engagement techique for the K1300S clutch.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #8  
Old 07-10-2013, 11:30 AM
Beech's Avatar
Beech Beech is online now
I-BMW Rider of the Year 2016
Post: 6,570 Thanks: 1,628
Thanked 1,544 Times in 1,183 Posts
 
Join Date: Nov 2003
Location: mount vernon, WA usa
Re: Clutch Rattle

Quote:
Originally Posted by BeemerMikeTX
It may be that the K1300S wet multi-plate clutch just does not like to be feathered when you engage the clutch on downshifts, but prefers to just have the clutch lever released and the clutch engaged quickly. That's what my dealer tells me. I'll play with this during my upcoming trip, which will have a lot of riding in the mountains, and see if I just need to modify my downshifting engagement techique for the K1300S clutch.

I think your on to it now. (you can't rule out a mechanical problem, keep an eye on things)
__________________
Beech Arriba, Abajo, Al Centro, Adentro
Mount Vernon Cannon Works
K1300S
S1000R
I need a Vespa
I change your tires, you buy them on the web, I do the work $40, trying to keep riders on the road.
Reply With Quote
  #9  
Old 07-10-2013, 01:00 PM
K13Mike's Avatar
K13Mike K13Mike is offline
Living the Dream
Post: 1,604 Thanks: 186
Thanked 811 Times in 390 Posts
 
Join Date: Jan 2013
Location: Calgary, Alberta., Canada
Re: Clutch Rattle

thanks for weighing in on the Beech, your discussion with Mike is bang on to what I have experienced.

I am a downshift clutch featherer too. It appears that at least our two K1300S' do not like this causing the clutch to "judder" under very light load when easing the clutch out at very low speeds.

It might be that I have been too easy on my clutch and not broken it in properly. I tend to ride the bike on the highway only and do not get the chance to do any hard launches where the clutch would really see a lot of action.
__________________
2013 BMW K1300S Black
2013 Yamaha XT1200 Super Tenere White
1983 Suzuki GSX1100S Katana Silver
Reply With Quote
  #10  
Old 07-10-2013, 06:17 PM
elp_jc elp_jc is offline
Can assemble bike blindfolded
Post: 3,151 Thanks: 1
Thanked 97 Times in 92 Posts
 
Join Date: Jun 2003
Re: Clutch Rattle

Next time you come across another K1300S rider, offer to swap bikes for a few miles just to make sure your bike's behavior is normal. I bet it will; these bikes are a little more 'crude' than Japanese ones. But one thing I don't miss one bit from all my previous Japanese bikes (a lot ) is the false neutrals. ZERO on this bike so far. A little clunky when engaging 1st, but all wet-clutch bikes are the same. Good luck.
Reply With Quote
  #11  
Old 07-10-2013, 08:33 PM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

Quote:
Originally Posted by elp_jc
Next time you come across another K1300S rider, offer to swap bikes for a few miles just to make sure your bike's behavior is normal.

Probably a good idea. I have several friends with K1300S's in my Sunday morning ride group and in my local BMW club, but no chance to do this before I leave Saturday morning. If I don't figure it out by the time I get to the rally in Salem, OR, I may try to ride someone else's K1300S, or just wait until I get back home.

Thanks again.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #12  
Old 07-31-2013, 10:05 PM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

The bike now has 7,500 miles, and the downshifting clutch rattle seems to be cured. During the 6,000 mile trip to Oregon it gradually got better, especially during the return, and now seems to engage smoothly like other clutches. The bike has been using the BMW/Castrol 4T 5W-40 synthetic oil since the 600-mile service. I'll see if the smooth engagement continues, but maybe it just takes a lot of miles for the K1300 wet clutch to break in.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #13  
Old 08-16-2013, 10:06 AM
frank_OZ's Avatar
frank_OZ frank_OZ is offline
Entering the on-ramp
Post: 19 Thanks: 5
Thanked 5 Times in 4 Posts
 
Join Date: Jul 2013
Location: Port Macquarie, NSW, Australia
Question Re: Clutch Rattle

It appears that at least three K1300S' do not like this causing the clutch to "judder" under very light load when easing the clutch out at very low speeds. I don't downshift into 1st but trying to feather the clutch in stop and go traffic is totally annoying. I am worried about this issue with my perfect new bike. My K1300R 2011 model year never did such a thing


Also just a note, (not a debate)


I have changed my oil at 500km with A total mineral based oil (Motul 3000) for proper break-in. My reason is my K1300R was a hell of an oil burner. Fingers crossed but at 2000km I haven't used any oil to speak of. And I've been running up to at least 10,000 RPM in 2nd and 3rd and lots of engine breaking. At 6000Km I will be switching to total Synthetic Mobile 1 Racing. I'm wondering if pure synthetic will clear it up? I will keep the board informed.

So are you guys on synthetic now?

Cheers,

Frank
__________________
2013 K1300S 30 Jahre K-Modelle- Current Beast
2013 F800GS- Traded- Tired of cleaning mud
2010 K1300R-Traded (At 47,000 km)-Hard to let it go
2010 S1000RR-Traded-Too cramped for my 6'2" frame
2007 R1200S- sold during bad times-totally miss that yellow machine.
Reply With Quote
  #14  
Old 08-16-2013, 11:00 AM
K13Mike's Avatar
K13Mike K13Mike is offline
Living the Dream
Post: 1,604 Thanks: 186
Thanked 811 Times in 390 Posts
 
Join Date: Jan 2013
Location: Calgary, Alberta., Canada
Re: Clutch Rattle

Hi Frank,

I am not sure if I have a real good understanding of this however I am of the opinion that my clutch rattle started when the dealership put in the castrol 5-40 BMW racing oil at my 1000km warranty inspection.

In Canada that oil is red, the oil that came in my bike from the factory was not red and I was told by the dealership that is was a factory break-in oil. That may or not be true, it seems that everyone has a different answer when it comes to these things.

I changed my oil and filter with the BMW synthetic again at 2000km and the rattle continued.

At 3000KM I changed my oil and filter again but this time following my hunch I went with Amsoil 10w40 synthetic motorcycle oil which meets JASO MA2.

Now I am approaching 8000km and have not experienced the problem since changing to the 10W40. It is possible that it is the viscosity change that has made the difference OR it could be that the clutch is more broken in.

My engine does consume oil I have monitored it very closely. If I am following the speed limit It uses no oil, but who does that. Riding hard it is using approx 0.5 litres over 3500km and seems to be dropping.

Last week I rode for approx 400km at 140-200kph steadily in Montana. My consumption seems to have dropped since that "episode"

In the end I do not think the clutch rattle is worth worrying about anyways, it is a minor annoyance at best.

Hope that helps.
__________________
2013 BMW K1300S Black
2013 Yamaha XT1200 Super Tenere White
1983 Suzuki GSX1100S Katana Silver
Reply With Quote
  #15  
Old 08-16-2013, 02:35 PM
elp_jc elp_jc is offline
Can assemble bike blindfolded
Post: 3,151 Thanks: 1
Thanked 97 Times in 92 Posts
 
Join Date: Jun 2003
Re: Clutch Rattle

Quote:
Originally Posted by frank_OZ
I don't downshift into 1st but trying to feather the clutch in stop and go traffic is totally annoying.
Well, THAT is your problem man. The K13S has taller gearing than the R. This bike does not like getting lugged under power, so just downshift to 1st and problem solved. What you're hearing is perfectly normal... BUT you shouldn't be doing that to the engine. Learn how to ride it properly, and you'll never hear that again. Last time I heard that I thought was in 1st but was in 2nd. I immediately downshifted to 1st and no more chattering. Remember you have an 11K rpm redline, so don't ride the bike like a Harley man . Yes, this bike has a lot more torque down low than your average sport bike, but the power curve is still much higher than a pushrod Harley engine that tops out at 5,500 rpm, for instance. Take care.
Reply With Quote
  #16  
Old 08-16-2013, 04:06 PM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

Quote:
Originally Posted by elp_jc
Well, THAT is your problem man. The K13S has taller gearing than the R. This bike does not like getting lugged under power, so just downshift to 1st and problem solved.

I don't think we are talking about lugging the engine at low rpm under power, or at least I'm not. I was talking about downshifting into a lower gear (say 1st, but could also be 2nd or 3rd), and then feathering the clutch to engage the engine and transmission WHILE STILL COASTING AND SLOWING DOWN, or before you reapply the power. The rattle occurred while the clutch was being engaged but stopped as soon as the clutch was fully engaged. As I said, however, for my bike this rattle/shudder has now gone away by 7,000 miles and using the BMW/Castrol 5w40 synthetic since the 600 mile service.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #17  
Old 08-16-2013, 07:01 PM
elp_jc elp_jc is offline
Can assemble bike blindfolded
Post: 3,151 Thanks: 1
Thanked 97 Times in 92 Posts
 
Join Date: Jun 2003
Re: Clutch Rattle

Quote:
Originally Posted by BeemerMikeTX
I was talking about downshifting into a lower gear (say 1st, but could also be 2nd or 3rd), and then feathering the clutch to engage the engine and transmission WHILE STILL COASTING AND SLOWING DOWN
Well, I've never done that. And you shouldn't either. Just blip the throttle to rev-match your next gear change and always release the clutch lever quickly. Smooth as butter (same in cars), but takes a little practice. Oh, and it sounds cool too . The only instance you should 'feather' the clutch is when making a U-turn. Even when launching, you should fully release the lever as quickly as possible, without being jerky. And with as little rpm as possible. Once engaged, then jump on the throttle. That will extend the life of your clutch as much as possible.

At any rate, what you're describing is not abnormal at all; it just requires an adjustment on your riding habits. These bikes are not quiet by any means. But if you're still worried after adjusting your riding technique as described above, just ride another bike to compare. Or ask a fellow member to ride yours, since many might not want you to 'abuse' their bikes . Just kidding man, but I accept one of these () if you felt offended. Hopefully that will be the end of your bike worries. Good luck.
Reply With Quote
  #18  
Old 08-16-2013, 08:46 PM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

Quote:
Originally Posted by elp_jc
Well, I've never done that. And you shouldn't either. Just blip the throttle to rev-match your next gear change and always release the clutch lever quickly. Smooth as butter (same in cars), but takes a little practice. Oh, and it sounds cool too . The only instance you should 'feather' the clutch is when making a U-turn. Even when launching, you should fully release the lever as quickly as possible, without being jerky. And with as little rpm as possible. Once engaged, then jump on the throttle. That will extend the life of your clutch as much as possible.

At any rate, what you're describing is not abnormal at all; it just requires an adjustment on your riding habits. These bikes are not quiet by any means. But if you're still worried after adjusting your riding technique as described above, just ride another bike to compare. Or ask a fellow member to ride yours, since many might not want you to 'abuse' their bikes . Just kidding man, but I accept one of these () if you felt offended. Hopefully that will be the end of your bike worries. Good luck.

I'm not talking about matching revs to downshift the gears in the transmission (e.g., double-clutching). I'm talking about engaging the clutch after the transmission has already been downshifted. Of course the optimum way to engage the clutch is to "rev-match" perfectly, but I have been "feathering" the clutch after the downshift while slowing down or maintaining a constant speed (BTW, this means taking 1-2 seconds to smoothly fully engage the clutch) so that IF I have not matched the revs perfectly I don't upset the bike. I have been feathering the clutch like this for the past 40 years, from my 1970 VW Beetle, my 1972 911, and all my other manual transmission cars, and with my wet multi-plate clutch Kawasakis and Yamahas, dry single-plate clutch BMWs, and dry multi-plate clutch Ducatis. The K1300S is the ONLY vehicle I have ever owned (or driven) that exhibited this rattle/shudder when feathering the clutch engagement after a downshift. Since my K1300S clutch no longer exhibits this rattle, and I have not changed my shifting/clutch engagement technique, it seems unlikely that technique is/was the cause.

And no, I don't feel offended.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #19  
Old 08-17-2013, 02:27 PM
elp_jc elp_jc is offline
Can assemble bike blindfolded
Post: 3,151 Thanks: 1
Thanked 97 Times in 92 Posts
 
Join Date: Jun 2003
Re: Clutch Rattle

Quote:
Originally Posted by BeemerMikeTX
I'm not talking about matching revs to downshift the gears in the transmission (e.g., double-clutching).
Just to clear things up, rev-matching is NOT double-clutching. With synchronized trannies, double-clutching is a thing of the past; all you need is a good rev-match (single clutching) to avoid a jerky downshift when releasing clutch quickly... which is the best way to downshift a manual transmission. Yes, slowly releasing/feathering the clutch works too to avoid a jerky downshift, but there's extra clutch wear, and doesn't sound nice, so why not learn to get it right ? Plus when tackling the twisties fast (track days, etc), you don't have time for that. Just saying, but it's you bike man; you can do whatever you want to it. Oh, and just slap a pair of good earplugs and you shouldn't hear much of that anymore. And if you don't like clutch rattle, don't ever buy a Ducati .
Reply With Quote
  #20  
Old 08-19-2013, 09:59 AM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

Quote:
Originally Posted by elp_jc
Just to clear things up, rev-matching is NOT double-clutching. With synchronized trannies, double-clutching is a thing of the past; all you need is a good rev-match (single clutching) to avoid a jerky downshift when releasing clutch quickly... which is the best way to downshift a manual transmission. Yes, slowly releasing/feathering the clutch works too to avoid a jerky downshift, but there's extra clutch wear, and doesn't sound nice, so why not learn to get it right ? Plus when tackling the twisties fast (track days, etc), you don't have time for that. Just saying, but it's you bike man; you can do whatever you want to it. Oh, and just slap a pair of good earplugs and you shouldn't hear much of that anymore. And if you don't like clutch rattle, don't ever buy a Ducati .

During my ride yesterday on the K1300S on several downshifts when slowing down I intentionally avoided "rev-matching" when I re-engaged the clutch after downshifting the transmission, just to test to test the clutch. Even when I let the engine slow down completely to idle and then feathered the clutch re-engagement to let the rear tire/transmission/clutch speed the engine back up to match the bike's road speed, the clutch never exhibited any of the rattle/judder/vibration that it exhibited earlier.

I agree completely that the optimum/preferred way to re-engage the clutch is to attempt to match the speed of the engine to the speed of the transmission input shaft before you release the clutch lever. I just disagree that it is "normal operation" of the clutch to rattle/judder/vibrate if the clutch is re-engaged when these two speeds are not matched perfectly or very closely. You are free to believe it is normal operation if you want to. Although my K1300S exhibited this "rattle" when it was new, it no longer does, so the rattle does not seem to be normal operation. I suspect it just took awhile for the clutch plates to get bedded in and/or saturated with oil, but since I rode the bike about 7,000 miles in the first two months, I don't know if this breaking-in process is time-dependent or mileage-dependent.

And if you look a my sig line you will see that I do own two Ducatis, both with dry multi-plate clutches. Although the clutches rattle loudly when the clutch lever is pulled in while the engine is running, neither clutch has ever exhibited any rattle/judder/vibration when the clutch is re-engaged after a downshift when slowing down.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
  #21  
Old 08-20-2013, 04:39 PM
elp_jc elp_jc is offline
Can assemble bike blindfolded
Post: 3,151 Thanks: 1
Thanked 97 Times in 92 Posts
 
Join Date: Jun 2003
Re: Clutch Rattle

Quote:
Originally Posted by BeemerMikeTX
I just disagree that it is "normal operation" of the clutch to rattle/judder/vibrate if the clutch is re-engaged when these two speeds are not matched perfectly or very closely.
First of all, I didn't say it was normal; I said it SOUNDED normal to me based on your description, and the fact these bikes are noisy. How the heck can me or anybody else diagnose such an issue without hearing it? But most importantly, why the heck are you looking for problems that don't exist? If the bike is not doing something seemingly abnormal ALL THE TIME, while being ridden appropriately, there's NOTHING to worry about. Clutch rattle and such behaviors change from hot to cold. It could be chattering due to traction interruption for all I know. If you look for problems, like starting in 2nd gear produces chatter, you'd always find something wrong with your vehicles. Just drive/ride them the proper way and stop worrying about nonexistent issues. By the way, you don't officially have a potential problem until you can duplicate it at will, so don't waste your time with that disappearing 'chatter' anymore . Signing off this thread.

Finally, if you want to minimize noise of your Ducati dry clutch, and also minimize clutch service expense, read this article: http://www.desmotimes.com/clutch.pdf . Good day.
Reply With Quote
  #22  
Old 08-21-2013, 08:46 AM
BeemerMikeTX's Avatar
BeemerMikeTX BeemerMikeTX is offline
Exceeding Highway speeds
Post: 1,208 Thanks: 716
Thanked 455 Times in 319 Posts
 
Join Date: Apr 2013
Location: League City, TX USA
Re: Clutch Rattle

Quote:
Originally Posted by elp_jc
First of all, I didn't say it was normal; I said it SOUNDED normal to me based on your description, and the fact these bikes are noisy. How the heck can me or anybody else diagnose such an issue without hearing it? But most importantly, why the heck are you looking for problems that don't exist? If the bike is not doing something seemingly abnormal ALL THE TIME, while being ridden appropriately, there's NOTHING to worry about. Clutch rattle and such behaviors change from hot to cold. It could be chattering due to traction interruption for all I know. If you look for problems, like starting in 2nd gear produces chatter, you'd always find something wrong with your vehicles. Just drive/ride them the proper way and stop worrying about nonexistent issues. By the way, you don't officially have a potential problem until you can duplicate it at will, so don't waste your time with that disappearing 'chatter' anymore . Signing off this thread.

I described the situation the best I could. The K1300S clutch was exhibiting something that none of my other bikes, cars, and trucks with manual transmissions have ever done over the past 43 years, so I was checking to see if this was "normal" with a K1300S clutch. After a couple of months and 7,000 miles the clutch no longer rattles/vibrates WHEN FEATHERING THE CLUTCH AFTER DOWNSHIFTING WHILE SLOWING DOWN (so I'm not talking about lugging the engine, starting in 2nd gear, traction control interruption, or cam chain noise), even if I try to make it happen. So, whatever was causing it seems to have been remedied (again, I now suspect the wet clutch pack just had to be broken in).

Quote:
Originally Posted by elp_jc
Finally, if you want to minimize noise of your Ducati dry clutch, and also minimize clutch service expense, read this article: http://www.desmotimes.com/clutch.pdf . Good day.

I did not say I wanted to minimize the noise of my Ducati dry clutches. I like the sound. Of course, I know that it is normal for Ducati dry clutches to rattle when the clutch is disengaged while the engine is running, and my two Ducati clutches do NOT rattle/vibrate WHEN I FEATHER THE CLUTCH AFTER DOWNSHIFTING WHILE SLOWING DOWN.
__________________
Mike

2013 BMW K1300S "30 Years"
1995 BMW R1100RS
1988 BMW K75S
1997 Ducati 916 Monoposto
1995 Ducati 900SS CR
Reply With Quote
Reply


Thread Tools..
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads (a database pull of similar subject matter)
Thread Thread Starter Forum Replies Last Post
Clutch Rattle?? BillGsa "K12S/KR" Technical Q&A 29 04-11-2016 04:35 AM
Clutch assistance needed throttlemeister "K13S/R" Technical Q&A 35 03-06-2013 06:58 AM
Clutch Problem racingiron "KRS/GT" Technical Q&A 81 06-13-2012 10:31 AM
What is it about making a reliable clutch that BMW simply does not grasp? HDF "K12S" Gen. Discussions 7 09-21-2008 04:06 PM
'06 K1200GT w/6400mile and a bad clutch JayZ "K12GT" Technical Q&A 12 10-26-2007 04:15 PM


All times are GMT -4. The time now is 03:40 AM.


I-BMW.com is via vBulletin Version 3.5.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 1998 - 2018, I-BMW.com LLC .
Page generated in 0.73270 seconds with 16 queries