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"K12S/KR" Technical Q&A K1200S/R Technical Questions/Answers

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  #241  
Old 03-07-2017, 07:53 AM
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Re: 08 K1200S build/questions/mods

"Bigger" information...

"K12R Driveshaft From K13R " http://www.i-bmw.com/showthread.php?t=42178

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  #242  
Old 03-07-2017, 08:50 AM
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Re: 08 K1200S build/questions/mods

The 1200 shaft has less torsional flex.
I had a few cases, especially going down hill into a turn, when the rear locked up for a split second when closing the throttle.
The 1300 shaft really made a difference after i put it in.
Like i said before, shifting is alot smoother and the clunk in hitting it into first gear is noticeably less (not gone, but less of a kick forward)
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  #243  
Old 03-07-2017, 03:31 PM
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Re: 08 K1200S build/questions/mods

I noticed that the part number for the damping washer is identical for the K12/13 S, GT, and R on Bikebandit.

By the way, wouldn't less torsional flex translate to better acceleration?
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  #244  
Old 03-07-2017, 04:29 PM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by DeusExMaxima
I noticed that the part number for the damping washer is identical for the K12/13 S, GT, and R on Bikebandit.

By the way, wouldn't less torsional flex translate to better acceleration?

I wonder if just changing the dampening washer in the 1200 shaft would do it, sorry did not look to see if it can be even done that way...
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  #245  
Old 03-07-2017, 06:48 PM
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Re: 08 K1200S build/questions/mods

The 1200 shaft is a one piece unit and is swaged so you cant take it apart.

The 1300 has a circlip. But i am not sure if it can be taken apart.

With the PCIII and all the other mods i can't say if i have lost torque or not.
It works for me....
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  #246  
Old 03-09-2017, 02:41 AM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by Patrique83
The 1200 shaft has less torsional flex.
I had a few cases, especially going down hill into a turn, when the rear locked up for a split second when closing the throttle.
The 1300 shaft really made a difference after i put it in.
Like i said before, shifting is alot smoother and the clunk in hitting it into first gear is noticeably less (not gone, but less of a kick forward)
So I bought that ebay 1300R shaft! Thanks for the tip. It was half the price of the local one. Any tips on this changeover job?
I might look at doing the 14mm bearing gearchange mod too.
Maybe this should be a separate thread eg "Making the gearchange slicker"?
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  #247  
Old 03-09-2017, 05:09 PM
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Re: 08 K1200S build/questions/mods

Remove tire, drop final drive down, grab and pull out drive shaft.
tips, have some good moly grease, or Optimoly TA, to coat the splines after you clean everything. Make a hook for the front shaft that will tend to fall down and not let you insert to the drive. Pull the front boot back on the side towards you so you can use your hook. Takes a bit of fiddling. Make sure you don't break the plastic rings inside the rear boot. If you do buy a new one as it will never seal well. Rub rear boot insert portions with some sort of rubber grease.
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  #248  
Old 03-10-2017, 05:27 PM
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Re: 08 K1200S build/questions/mods

Just got this...

http://www.ebay.com/itm/09-16-Bmw-K1...FYwcIA&vxp=mtr

Hope it's a good one...

http://www.ebay.com/itm/09-16-Bmw-K1...047675. l2557
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  #249  
Old 03-10-2017, 05:31 PM
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Re: 08 K1200S build/questions/mods

Keep us posted with thr result when you install it.
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  #250  
Old 03-10-2017, 05:35 PM
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Re: 08 K1200S build/questions/mods

Thanks I will

Sorry for using your thread, but starting a new one seemed pointless, plus it gives you exposure, and others a place to read about all sort of mods...

Now one day, I need to get that power commander and quick shift....just like you...
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  #251  
Old 03-10-2017, 05:41 PM
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Re: 08 K1200S build/questions/mods

No apologies necessary. This Thread should be a good thread for anyone who wants to see the options available for building the K12S . I went for a ride today and each time I put it in first the bike just clunks really hard so I'm curious how the drive shaft will ease that up a little bit. Still thinking about the quick shift also. I'm also considering the K-12R handlebar bridge.
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  #252  
Old 03-10-2017, 05:48 PM
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Re: 08 K1200S build/questions/mods

Not the most recent picture but a few mods on her, got some carbon fibre bits and also have the rear tail luggage rack on as well just not in this picture

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  #253  
Old 03-10-2017, 06:02 PM
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Re: 08 K1200S build/questions/mods

Gatekeeper...beautiful color. Have you thought about black wheels?
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  #254  
Old 03-10-2017, 06:29 PM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by DeusExMaxima
Gatekeeper...beautiful color. Have you thought about black wheels?

Not yet, but that might be a good option.....
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  #255  
Old 03-11-2017, 11:29 PM
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Re: 08 K1200S build/questions/mods

ureI had been noticing the smell of raw gas after I filled up yesterday. I thought maybe it was because I filled up. Then I noticed after riding around for a bit that I had a small stain under my bike that smelled of gas. Interestingly, there was this gooey stuff to on the floor that look possibly like motor oil.

When I got home I remove the fairings and separated the gas tank and turn the ignition on and saw fuel leaking from the metal fuel fittings. I disconnected the metal fuel line and remove the tank from the bike and saw this white crud near the female metal fitting. I removed the female fitting and found this crud so I cleaned it off and reinstalled the female fitting hook the tank back up and turn the ignition to on. Problem solved because there was no leak. Apparently that gooey stuff was some of the glue from the insulation beneath the fuel tank.

I was wondering why my gas consumption went up because it was leaking all over the street I guess.




While I had the Plastics off I took the time to take my navigation apart because it didn't seem to fit quite well. I found out what the problem was and now it fits perfectly well. Here is a before and after picture:



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  #256  
Old 03-11-2017, 11:50 PM
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Re: 08 K1200S build/questions/mods

I had been noticing the smell of raw gas after I filled up yesterday. I thought maybe it was because I filled up. Then I noticed after riding around for a bit that I had a small stain under my bike that smelled of gas. Interestingly, there was this gooey stuff to on the floor that look possibly like motor oil.

When I got home I remove the fairings and separated the gas tank and turn the ignition on and saw fuel leaking from the metal fuel fittings. I disconnected the metal fuel line and remove the tank from the bike and saw this white crud near the female metal fitting. I removed the female fitting and found this crud so I cleaned it off and reinstalled the female fitting hook the tank back up and turn the ignition to on. Problem solved because there was no leak. Apparently that gooey stuff was some of the glue from the insulation beneath the fuel tank.

I was wondering why my gas consumption went up because it was leaking all over the street I guess.




While I had the Plastics off I took the time to take my navigation apart because it didn't seem to fit quite well. I found out what the problem was and now it fits perfectly well. Here is a before and after picture:



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  #257  
Old 03-13-2017, 06:11 PM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by GateKeeper
Not yet, but that might be a good option.....

I think its a great option....
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  #258  
Old 03-15-2017, 04:21 PM
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Re: 08 K1200S build/questions/mods

I just bought a 2010 K1300GT driveshaft....yes it will fit the K1200S...LOL.

http://www.ebay.com/itm/10-BMW-K1300...pYqHrJ&vxp=mtr
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  #259  
Old 03-15-2017, 04:42 PM
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Re: 08 K1200S build/questions/mods

Sweet,,,just like the one I got....

You will probably have yours in way before me, we are still in winter mode and just got more snow, and too bloody cold in the garage to work on it now....
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  #260  
Old 03-15-2017, 05:10 PM
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Re: 08 K1200S build/questions/mods

Yes. Actually I was thinking you would get yours in before me because it's so hot here that it's too hot to work outside. Temperatures have been in the nineties the last few days....
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  #261  
Old 03-22-2017, 04:33 PM
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Re: 08 K1200S build/questions/mods

I got the shaft....







I guess it's good
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  #262  
Old 03-22-2017, 04:51 PM
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Re: 08 K1200S build/questions/mods

Still waiting for mine. Estimated delivery is supposed to be tomorrow.
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  #263  
Old 03-23-2017, 02:32 PM
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Re: 08 K1200S build/questions/mods

did you get it ?????

also do we need to order a new Damping Washer ?? or can the existing one be reused ??

.
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  #264  
Old 03-23-2017, 06:31 PM
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Re: 08 K1200S build/questions/mods

I got mine.
I'll install it when I next do a new tyre.
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  #265  
Old 03-23-2017, 07:34 PM
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Re: 08 K1200S build/questions/mods

A lovely package was waiting for me on the porch this afternoon. Here is what was inside:





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  #266  
Old 03-23-2017, 11:08 PM
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Re: 08 K1200S build/questions/mods

It's interesting to see how beat up these shafts look, considering they were put in at factory, probably never taken out, are housed in a closed cover, yet still look as they have been tossed around a few times.

I also find the smaller knuckle is a bit more stiff and does not flop around, as compared to the end with the long spline, it seems to have more play in it, I don't find any looseness just it moves around a bit more freely.

Wondering what my existing drive shaft will look like when I pull it out and compare to the I just got.
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  #267  
Old 03-24-2017, 01:15 AM
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Re: 08 K1200S build/questions/mods

The smaller knuckle on mine is the same as yours. It's stiffer than the other side.
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  #268  
Old 04-08-2017, 11:30 AM
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Re: 08 K1200S build/questions/mods

As a newbe to BMW this info is very helpful thanks for sharing.

Buffalobob
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  #269  
Old 04-08-2017, 11:33 AM
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Re: 08 K1200S build/questions/mods

Sounds like a good think you were not taking a smoke brake

Buffalobob
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  #270  
Old 04-08-2017, 02:38 PM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by Buffalobob
As a newbe to BMW this info is very helpful thanks for sharing.

Buffalobob

You are welcome. Part of the reason for some of the specifics in my post was to be helpful to people and for people to find a concise place to get information on these really nice bikes.
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  #271  
Old 06-15-2017, 08:17 AM
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Re: 08 K1200S build/questions/mods

Well last night I lifted the bike, removed the back wheel, removed the old drive shaft, greased up the new one, put her all back together, but it was 11 p.m. and no time for a test ride, so I can't say yet if it's better, worse or the same, stay tuned....I can say it was a royal pain to get the shaft back in, I did not remove the front gaiter as I was not sure how it would get put back on and I did not want water getting in, so I used a wire looped to the front of the shaft to hold it straight and pushed her in, this took some fiddling but eventually got it in, however I did have to use a soft rubber mallet to gently coax her in, there was no way of pushing the shaft in by hand she just would not go, a couple of light taps though and she was in, lots of grease applied, probably more than it needed but I was not taking a chance, however if you look at the pics, everything is very clean and a very small amount of grease was present, I hope I didn't over do it., I was even able to find the correct grease, and by the way, in trying to find the right stuff I was advised that it's no longer being produced, this was an email I received while sourcing the greas

Quote:
Hello Dan.
Optimol Paste TA has been discontinued. Castrol makes Molub-Alloy Paste White T available instead. In terms of application, please note that the Paste White T is suitable for applications where temperature does not exceed 250 Celsius. This is significantly lower than the 1100 Celsius of Optimol Paste TA.

We do not currently have Molub-Alloy Paste White T in stock. It is usually available in 20 kg pails, 180 kg drums, and cases of 20X100 g tubs.
Once you advise me the package size required I’ll advise price and lead time.

Regards

Koos Erasmus, CLS
STLE Certified Lubrication Specialist
Sales Representative
Case ‘N Drum Oil Inc.

Fortunately for me, my local BMW car dealership had some and I was able to get it from them
















.
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  #272  
Old 06-15-2017, 02:27 PM
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Re: 08 K1200S build/questions/mods

That reminds me.....I need to get my driveshaft in too! Is the kind of grease used really that important? I was just going to use some generic axle grease.
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  #273  
Old 06-15-2017, 02:52 PM
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Re: 08 K1200S build/questions/mods

If you don't have Optimal TA, go to the auto parts store and get some CV joint grease, or to he honda shop and get their 60% moly. Regular wheel bearing grease is not an acceptable choice. You should use a moly based high pressure lube for the splines.
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  #274  
Old 06-15-2017, 03:06 PM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by Beech
If you don't have Optimal TA, go to the auto parts store and get some CV joint grease, or to he honda shop and get their 60% moly. Regular wheel bearing grease is not an acceptable choice. You should use a moly based high pressure lube for the splines.

I will do that. Thanks!
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  #275  
Old 06-15-2017, 06:09 PM
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Re: 08 K1200S build/questions/mods

Thanks Beech, I was going to say the same,,,,don't cheap out on the grease....

As for the Honda, get the #60 grease not the #77 that stuff is crap

The Castrol stuff you can get even at the BMW car dealership, does not have to be just where bikes are sold

If u use the good stuff wear gloves, that silver paste don't come off easy......trust me

Plan on 3 hours of work, struggle, head scratching etc,,,,I think if I do it again probably wouldn't take more than an hour....lol

I wil be out for a test ride latter this evening, I'll post my findings....
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  #276  
Old 06-16-2017, 04:28 AM
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Re: 08 K1200S build/questions/mods

So good to see that other people are struggling too to get the shaft in....

You'll get better at the more often you pull it out for sure.....
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  #277  
Old 06-16-2017, 06:57 AM
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Re: 08 K1200S build/questions/mods

Happened to me with a bit of frustration.

I ran a length of builders string line down the shaft, one and a half wraps around the male shaft, then back down to the rear most uni joint..

Pull on the string until male splined shaft is at about the right angle, grip string/shaft at uni to hold that position, then feed it in. No need to disturb rubber boot at the front. Once engaged, pull string out.

Quote:
Originally Posted by Patrique83
So good to see that other people are struggling too to get the shaft in....
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  #278  
Old 06-17-2017, 02:07 AM
DeusExMaxima DeusExMaxima is offline
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Re: 08 K1200S build/questions/mods

Gatekeeper....howd the test ride go?

I got my bearings in for the shifter mod.
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  #279  
Old 06-17-2017, 10:13 AM
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Re: 08 K1200S build/questions/mods

Sorry for the delay, did not go for a test ride it started to rain buckets, but by morning it had stopped, so my ride to work became my test ride....

Rolled out of the garage and onto the road, in neutral,,,pulled in the clutch and hit gear lever, got her into first, so far so good, and one noticeable difference, it was quieter than any other time since I have owned the bike. Well released the clutch and off I went, no shakes, no vibrations, no issues really all the way to work, the biggest thing I found was it is quieter shifting from gear to gear, and especially from neutral to first.

So happy to say this mod, does help, in making things quieter, and is worth the effort in doing


My thoughts on the job, it took longer than I thought, needed a rubber hammer to get the shaft in to the engine side, no matter how much effort I put I could not just push it in, it just needed that little bit of persuasion, the grease makes a mess and sticks to everything, wear gloves or you will wear the grease for a few days, don't take off the front gaiter if u don't have to, I didn't, as I see if it's not on 100 percent it will allow water in there and that will cause more issues. Otherwise it was fairly straightforward, I did not have to remove my exhaust as per instructions I have enough clearance to remove rear wheel.

Overall a great mod, not complicated to do, just a bit frustrating, but in the end it was satisfying.

Cheers


As for the shifter mod, I tried it, found no benefit, and could not get it to work correctly, so I went back to stock, might revisit it one day...
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  #280  
Old 06-18-2017, 02:20 PM
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Re: 08 K1200S build/questions/mods

Wgat was the problem with the shifter mod?
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  #281  
Old 06-18-2017, 06:01 PM
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Re: 08 K1200S build/questions/mods

Quote:
Originally Posted by DeusExMaxima
Wgat was the problem with the shifter mod?

I could not tighten it all up with out it binding, and then the shifter would not move, no matter how I tried to space it out, no matter what bolt, washer, and so on, it just did not work for me, it would be too tight and not move, or too lose and that was no good either as eventually the bolt would just undue itself.

I don't see much if any play in my shifter, so for now I will leave it as is....the bearings I just put in a baggie and put in my tool box, for some other day....

.
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Old 06-18-2017, 11:41 PM
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Re: 08 K1200S build/questions/mods

Instead of installing all 4 bearings, I only used 2.
I filled the space between the 2 bearings on the inside of the shifter with 5 washers that were about the same size as the inner race.

And then I put 1 washer on the outside between bearing/shifter and the braket.

Loctite the bolt....so you don't have to tighten it until everything binds.....

Worked for me......until I installed the k1300 shifter setup.
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  #283  
Old 06-19-2017, 12:02 AM
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Re: 08 K1200S build/questions/mods

How would replacing the bearings with washers make it better? It would seem to me that having all the bearings there as others have done would be the best solution so I'm curious why it worked for some but not others?
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Old 06-19-2017, 09:02 AM
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Re: 08 K1200S build/questions/mods

Using washers lets you tighten only the inner races against each other all the way to the bracket.
If you tighten the inner and outer race together, you endup having clamped the bearings against each other and there is no movement of the balls.
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Old 06-19-2017, 11:55 AM
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Re: 08 K1200S build/questions/mods

But no one else seemed to have had that problem. What size washers? 8mm i.d.?
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  #286  
Old 06-19-2017, 02:02 PM
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Re: 08 K1200S build/questions/mods

If you clamp the bearings together and they are not able to move,
the shifter is essentially turning on the bolt and using the bearings like a bushing.

I used 8mm inner, 12mm outer diameter washers. Same diameter as the inner race.
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Old 06-19-2017, 02:14 PM
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Re: 08 K1200S build/questions/mods

I would think if the bearings were together, then they ought to be able to move. Ill have to dive in the project to see what works. Ill need to source a bunch of washers. Where did you get your washers?
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Old 06-19-2017, 08:44 PM
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Re: 08 K1200S build/questions/mods

Leftovers from cutting airplanes apart.....
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Old 07-06-2017, 04:07 AM
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Re: 08 K1200S build/questions/mods

I examined the original Shifter Mod thread and found some washers that are the correct size. I ordered the washers and they should be here within the week and then I will make a serious attempt on the Shifter Mod.

I have noticed that the bike occasionally has a very rough idle and even has stalled a couple of times even after the installation of my power commander 3. I'm trying to determine when this occurs which will let me know what the common denominator is and maybe lead to the solution. Each time the bike is fully warmed up and the weather is typically hot. I wonder if temperature has something to do with it. I will try to see what conditions induce the rough idle or stalling. The bike does start up each time right away.
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Old 07-06-2017, 01:48 PM
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Re: 08 K1200S build/questions/mods

I think the heat messes with the air box and puts the idle actuator in a bind. That has been the theory in the past. Some remove it and give a good cleaning/lube.
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Old 07-06-2017, 03:08 PM
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Re: 08 K1200S build/questions/mods

I removed mine, when I had the bike apart, and then I very lightly sanded some of the rough edges and Polished it. Maybe I should have put some anti-seize or some sort of dry lubrication on it. Also I haven't driven it on any particularly long trip so maybe I need to just drive it some.

Otherwise, it runs beautifully 95% of the time. Again, I will try to keep an eye on exactly the circumstances when it occurs.
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Old 07-09-2017, 07:09 AM
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Re: 08 K1200S build/questions/mods

My washers arrived in the mail today so I have the washers and the bearings so that I may do the Shifter Mod. I will try to get to it tomorrow afternoon and keep you all updated as to my impression.
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Old 11-01-2017, 05:02 PM
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Re: 08 K1200S build/questions/mods

My bike had been running intermittently rough at idle. I may have stumbled on the solution. I was arriving at my destination on a trip when suddenly the power completely cut out. I determined the battery terminal lead had become loose. I tightened the positive battery terminal lead and my rough idle seems to have disappeared. The bike runs beautifully now!!

I have a few projects lined up for the bike:
1. Fix or replace the turn signal cancel switch. Unless its pressed REALLY hard, you cant manually cancel the turn signals.
2. Install K1300S driveshaft
3. Install BMW centerstand
4. Install ball bears/washers for shifter mod

After these projects, Ill have a bike that I can shut off the turn signals, put on centerstand while fueling up or for maintenance, and it should shift smoother
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  #294  
Old 06-06-2018, 06:42 PM
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Re: 08 K1200S build/questions/mods

I havent done any of the mods I mentioned in my last post. My tires did wear out since then so I did a "mod." The K1300S comes with a 190 55 17 rear tire, as opposed to the 50 series tire on the K1200S. From what I read, two benefits occur with this change. The main benefit is that the taller tire is more rounded thus allowing for easier turn in. The second, more minor benefit is that the taller tire reduces rpms for any given speed. I dont know the actual difference in size, but the 50 series tire fit into the trunk of my car, whereas the 55 series did not fit all the way. According to my math, the sidewall height would be about 10mm taller. I suppose theoretically, the tire should take longer to wear out since it would not turn as many rpms over time. BTW, the speedo seems to be accurate now. Before it read slightly fast.

Any way, the bike rides and handles better. Has anyone else made the change to the 55 series?

My tires are Michelin Power Sport 2CTs.
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