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BMW R-Series Discussions of the Boxers EXCEPT the GS/GSA

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  #1  
Old 03-13-2018, 07:49 PM
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Question R1200RT Shift Assist

Test rode the RT today, two up.

Compared to the K12RS, it appears to have very short gearing in the lower range.

The shift assist also bucks when used at higher rpms.

Apparently it was designed for low rpm use.

Anyone else note this???
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Old 03-14-2018, 03:29 PM
duckbubbles duckbubbles is offline
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Re: R1200RT Shift Assist

It can take a few thousand miles to figure out the shift assist. The hardest thing for me to learn was to NOT try to "help" it (Closing the throttle even slightly on upshifts and trying to blip it on downshifts). There are many times that you will get better results shifting manually. I almost always shift manually 1-2 and many times 2-3. It upshifts better while accelerating rather than with steady or moderate throttle. It works great with a big handful of throttle. In time you will just know when you ought to shift it manually. That's UPshifting.
On DOWNshifts, just hold the throttle closed and downshift decisively. It rev matches consistently better than I can manually, all the way to first.
The system isn't perfect, but it's pretty good and in time you will get used to it. I pitied the transmission on my '16 RS for the first couple thousand miles until I figured it out.

Frank
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  #3  
Old 03-14-2018, 04:03 PM
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Re: R1200RT Shift Assist

I took a r1200r out for a run while my K16GTL was in for service and found the shift assist from 1st gear to 2nd gear was darn near dangerous, shifting between 3, 4, 5 and 6 were much smoother. I quickly figured out it was easier and safer to manually switch from 1st to 2nd gear and if I was in the market for a r12r the rough transition between 1st and 2nd using shift assist would have been a show stopper.
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Old 03-14-2018, 04:34 PM
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Re: R1200RT Shift Assist

I manually shift 1 > 2 . I find it smoother. Up shifting from there to 6 works well at maintained, moderate to heavy accelerations. Downshifting with throttle closed works well.
I have one issue with up shifting manually. 2 > 3. I can make the shift at about 3K RPM and it goes well or now and then I can pull clutch, close throttle ,light pressure on the shifter and the rpm kicks up to about 4K rpm. It will hold that rpm as long as I hold a light pressure on it. I think there is something with the Shift Assist Pro that is causing this. The dealer said they cannot experience what happens. I was thinking of a Go Pro to document the issue. Engine rpm speed hand off the throttle. Is my bike the only one that experiences this?
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  #5  
Old 03-15-2018, 09:45 AM
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Re: R1200RT Shift Assist

What I have experienced and take this for what it is worth. On my 2013 K1300S which only had the electronic upshifting - it was for the most part really good.

I never used it 1st to 2nd. Most shifts were really good with anything from holding the throttle steady to rolling on smoothly to WFO.

My 2014 K1300S the shifting was flawless - so much so sometimes I was not sure it actually shifted. Really didn't matter what throttle position on that bike it just worked - well as good as it could - it was that good.

My 2012 S1000RR only had upshifting - again never used it from 1st to 2nd. That bike for sure you had to be aggressively opening the throttle and even then it was a 50/50 chance of a nice smooth shift or a really harsh bang it in gear shift.

My 2015 S1000RR had the pro shifting up and down - the good was the downshifting was flawless. The up shifting more times than not was really harsh - hard bang in gear - then other times as smooth as glass. I asked the dealer if it was a programming issue they said when they had it on the computer it was set correctly.

My 2016 S1000RR again has the pro shifting - downshifts flawless - depending on how I have the engine braking adjusted - other than the tach needle moving you don't even feel it when I am using little engine braking - when I dial in more engine braking you can feel it but still super smooth.

Upshifts are better than my 2015 but still many times doing it 100% by the book rapid acceleration and all that sometimes it really bangs in.

I have no idea why one shift is perfect then the next is not.

It is no way I'm not shifting it correctly - in fact I have never bought into any of the BMW bikes that have been quirky shifting that I have to re-learn 50 years of how to ride a motorcycle to shift it correctly.

Now on the K bikes I had - I never could explain it.

The S bikes well there is a few things could be in play mainly the chain - possibly - if you have the chain really loose I'm willing to say that may be part of the reason. And yes I run the chain loose on the RR's.

But if I had to say would I buy the bike without it the answer is no - it is worth it for me just for the downshifting attribute - honestly I couldn't care less about the electronic up shifting.

The downshifting is just better than me in every case - especially appreciated at the track - just not having to move your hand off the bar or squeezing the clutch lever or even if you do clutchless downshifts the electronics is faster.
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  #6  
Old 03-17-2018, 12:38 PM
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Post Re: R1200RT Shift Assist

OTOH,

The shift assist on the K16B works like shifting through "butter."
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Old 03-17-2018, 12:46 PM
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Re: R1200RT Shift Assist

As Bruce says the time delay of neutral when doing the 1-2 shift is not good. Most people do not use shift assist for the 1-2 shift. And in general it works better when accelerating smartly, not puttzing around.
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  #8  
Old 03-18-2018, 05:11 PM
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Re: R1200RT Shift Assist

This is an interesting discussion. Didn't have the quick-shifter on my previous '15 GS-A, but it's on my current '18 (along with the keyless thing), having the bike since Dec. with about 1500 miles on it. Have adapted to it in my own way - and have been a bit reticent about how it's used by me, but here goes:

Downshifting (agree with Bruce V) seems to be it's best use. Here, I tend to forget all about either the throttle and/or the clutch - pretend they don't exist. For me, it's just the left foot and the shifter. Jut tap the shifter downward and the tranny downshifts imperceptibly. (no drama). No issue with over revving going into 2nd, since the new tech includes the "slipper-clutch" and the rear wheel will not lock-up.

Quick shifting-up is the opposite. '"Pin" the throttle, then "quickly" tap up on the shifter. Operative word here is "quickly". Doing this in a slow manner (with the throttle pinned) will have the bike in triple digits if you are heading for 6th gear. Have found thru experimenting with the revised and very smooth '18 boxer tranny results in just the faintest little - and very satisfying "blip".

One caveat here in quick-shifting up: it's by-far best to use this feature on roads with higher speed limits - say 60 and over. For streets and roads with speed limits between 25 - 40, it's best to use the clutch and go up to 3rd or 4th. '18 tranny is so smooth that even this procedure is a nice, smooth effort.

All-in-all, can say that after getting used to the quick shifter (both up and down), it works very slick and unless deviating accidently from the above way of using it, there's is nothing but smooth transitions up or down thru the gears while employing the use of it.

Miles
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  #9  
Old 03-18-2018, 07:12 PM
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Question Re: R1200RT Shift Assist

Quote:
Originally Posted by Miles_Miller
Quick shifting-up is the opposite. '"Pin" the throttle, then "quickly" tap up on the shifter. Operative word here is "quickly".

And therein lies the problem I experienced.

Instructions, repeated several times, were to hold the throttle constant while shifting up.

The explanation given after the ride was that the engine rpms were too high and thus the "bucking." Not that the throttle wasn't being held constant.

By "Pin" do you mean rev it or keep it constant.

If the latter, that wasn't working in the higher rpms on the demo bike.

Could have been an adjustment problem with this bike.

Again, no such problem with the K16 Bagger that I demoed. In fact, shifting was much smoother using the quick shift on that bike compared to using the manual clutch on it when accelerating quickly.
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Old 03-18-2018, 08:56 PM
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Re: R1200RT Shift Assist

You need to be accelerating not constant speed. Thus lots of throttle and not in town.
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Old 03-19-2018, 09:51 AM
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Re: R1200RT Shift Assist

On my R1200RS When I got it from the dealer, shifter was not correctly synchronized. I had problems with higher rpms as well. Maybe this is your problem.
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Old 03-19-2018, 10:48 AM
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Thumbs up Re: R1200RT Shift Assist

Thanks for all of the feedback on this issue.

Prevailing opinion is that the bike needs more/increased throttle when upshifting with shift assist and that holding the throttle constant was the issue.

This is the method used when demoing the K16 Bagger and the shift assist worked flawlessly.

Lack of synchronization is another explanation and should be examined if the above doesn't work.
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Old 03-22-2018, 06:14 PM
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Red face Re: R1200RT Shift Assist

Quote:
Originally Posted by BMW
CORRECTION

When shifting a low speed, a constant throttle may work, but at higher RPMs, the Prevailing opinion is that the bike needs more/increased throttle when upshifting with shift assist and that holding the throttle constant, when at high RPMs, was the issue.

This is the method used when demoing the K16 Bagger at higher RPMs and the shift assist worked flawlessly.

Lack of synchronization is another explanation and should be examined if the above doesn't work.
...
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Old 03-22-2018, 07:34 PM
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Re: R1200RT Shift Assist

Gear calibration you can do on your own. Procedure is in rider's manual. 10sec on N and then each gear for 10sec (be sharp on time). Normally it should indicate by blinking that it is not calibrated/synchronised. In my situation wasn't.
I lost calibration twice in one year, but after this procedure everything works flawlessly.
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Old 05-31-2018, 09:46 PM
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Re: R1200RT Shift Assist

I haven't ridden anything in shift assist yet. But I'm skeptical if I'd like it. Now the hill start control on the other hand, is a feature a short legged guy as myself would love.
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Old 05-31-2018, 09:53 PM
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Re: R1200RT Shift Assist

Shift assist is friggin brilliant on the XR
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