Showing posts with label Gear Shift Assist Pro. Show all posts
Showing posts with label Gear Shift Assist Pro. Show all posts

30 May 2016

R1200GS Adventure 2016 first impressions


Now that I’ve had the chance to put on a couple hundred miles I thought it would be a good time to collect my thoughts on the R1200GS Adventure, having come from an F800GS and a standard R1200GS.

Let me start by saying I am now certain I made the right choice with this bike as it just feels ‘right’. It has taken no time to feel comfortable on it, from U-turns to filtering (lane-splitting). I mentioned in a previous post that the Adventure pulls together what to me are the best parts of the F800/R1200 into one bike—that is, the characterful liquid cooled boxer engine and electronic toys from the 1200 and the soft, wallowy ride and effortless handling of the 800.

So far, other than a little bit of gravel, I’ve ridden strictly on-road—I’m not quite ready to get it dirty, at least not until after the running-in service at about 600 miles. And it has taken a bit of self restraint to keep the revs capped at 5,000 rpm!

Suspension and handling


This is the standout feature of the Adventure—the ESA system seems to be designed with the extra 11% of suspension travel of the Adventure in mind—it just does its job more effectively than on the standard 1200. Switching damping modes, soft really is soft, normal is normal and hard is noticeably firm. 

Despite the extra suspension travel, the anti-dive geometry of the telelever front suspension works as well as on the standard 1200, and the rear lift under braking seems about the same as well. To me, the raised suspension has many advantages but no drawbacks.

The Adventure also has a 1° steeper steering angle than the standard 1200 (and 0.5° steeper than the 800) which means it’s quicker on its feet to change direction. On twisty, narrow, poorly surfaced British B-roads it effortlessly cuts through the corners, soaking up mid-corner bumps with no drama.

Features


Everything will be familiar to anyone coming from a liquid cooled R1200GS—so you have plenty to play with. Drive-by-wire throttle with electronic cruise control, driving modes (rain, road, dynamic, enduro and enduro pro) with linked ABS and traction control calibration, aforementioned ESA with electric preload adjustment, gear shift assist pro, fairly comprehensive customisation for the onboard computer, daytime running lamps, automatic headlamps, grip heaters (which get much warmer than my previous bikes) etc. New for me are keyless ride and ABS pro.

Keyless ride


As somebody who seems to have some sort of mental illness relating to keys, the keyless ride option was a must when I placed the order for this bike. I forget keys constantly—at best upstairs at home, at worst in the ignition after I’ve parked. Now the key can stay safely zipped into the pocket of my jacket. 

How does it work? When the key is within about 1m of the bike, pressing the ignition button once unlocks the steering, and a second press switches on the bike, ready to start the engine. Alternatively, a long press will unlock the steering and switch on the ignition in one step. Stopping is the same, two short or one long press to switch off the engine/ignition and lock the steering (either to the left or right). 

If the fob’s transmitter battery goes flat, it simply needs to be touched against a special spot on the bike which reads the chip in the fob and allows the ignition button to work for a few seconds.

If the key is moved out of range while the bike is on (but not running) it will switch itself off after 30 seconds. If the engine is running, it will angrily flash a yellow warning on the dash (the engine won’t stop automatically in this case, but of course it won’t restart without the key in range).

The fuel filler cap remains unlocked for about 30 seconds after switching off the ignition and opens electrically via a small lever on top (similar to the keyhole cover on the standard filler cap)—after 30 seconds the lever deactivates.

ABS pro


In plain English, this is BMW’s name for lean-sensing ABS—a feature I hope I never need, and not one I’m in a hurry to test out. 

When braking while leaning in a corner without ABS, either the bike will stand up (and therefore go straight ahead), or the tyres will skid causing the bike to go down. With normal ABS, the bike will stand up and ABS will prevent skidding, but there is the potential to go straight into a ditch/hedge/oncoming car etc. 

ABS pro senses that the bike is banked/leaning into a corner and modulates the ABS to keep the lean consistent, therefore allowing maximum braking without affecting the current radius. KTM was the first to use this system in partnership with Bosch, and BMW uses the same hardware with their own software.

Gear shift assist pro


Readers of my blog know I love this system, and it feels much more refined on the Adventure. From what I understand there are two differences—one is that the system was fitted at the factory (it was retrofitted on my previous bike), and the other is that the Adventure has a dampener built into the driveshaft which reduces driveline shunt (that jerking motion you get when coming on and off the throttle at low speeds). Regardless of whether these differences hugely affect the operation of the GSAP system, it is smoother and lighter on the Adventure than it was on my previous 1200.

Drivetrain


Not a lot to say that I haven’t before... The liquid cooled boxer is hard to fault—it’s loaded with torque and a flat torque curve means you can pick a gear and go. The Adventure has a heavier flywheel than my previous 1200 (the heavier flywheel was added to the standard version for 2015 and has been on the Adventure since 2014) and it does seem a bit more resistant to stalling when having a ham-fisted moment operating the clutch when starting off, but more importantly makes the engine a bit smoother and more agreeable during low speed manoeuvres in traffic etc.

The clutch and gearbox is not quite F800GS-smooth when engaging first from a standstill but it’s not far off, and it’s a huge improvement over my previous 1200. The clutch engagement is also much softer—some hydraulic clutches (my previous 1200 included) feel like an on/off switch and this one is more progressive, almost as progressive as the cable-operated clutch from my F800 but requiring about a third of the effort to pull the lever.

These small refinements have all but addressed my complaints about my previous 1200 and come together to provide a much more premium feel overall.

Performance


The bike is still in the run-in period which means not applying full throttle and not exceeding 5,000 rpm for the first 600 miles. Since day-to-day I’ve not often had any need to exceed either of these restrictions, it feels like business as usual apart from resisting the urge to open it up on a motorway slip road—but it’s not for long! 

The Adventure weights 20 kg more than the standard version and holds 10 litres more fuel (which accounts for half the extra weight)—performance is not expected to be much different, it goes pretty much as fast as you’d practically ever need. I would say the extra 20 kg actually works in the bike’s favour as it sits over the front axle and means there is less tendency for the front wheel to lift (and the associated power cut from the ASC system)—the bike can use more of its power more often.

The most important part of performance is of course getting it to the road, and the Adventure is equipped with the same Michelin Anakee 3s as the standard version—pretty useless off-road, but an excellent tyre on-road. I will consider giving the Heidenau K60 Scouts a try once these wear out, as I found these to be excellent 50/50 tyres on my F800. Or possibly the new Michelin Anakee Wilds.

Wind/weather protection


The larger tank and windscreen mean it’s more sedate at high speeds—at 70 mph you can speak to your passenger without an intercom (without having to yell), which was not possible on any of my previous bikes. Not ridden in the rain yet but expect it wouldn’t be quite as wet an experience.

Luggage system


The Adventure uses the more robust aluminium pannier/top box system which appears similar to what I had on my F800 (but are actually mirrored due to the exhaust being on the opposite side, and also have slightly more refined latches and locks), whereas my previous 1200 used the plastic vario system.

One thing I liked about the varios was that they could collapse inwards which made the panniers almost unnoticeable in traffic. The F800’s aluminium panniers, however, really stuck out, making filtering through traffic an extremely precise ordeal.

On the Adventure, the aluminium panniers seem to be closer to the bike’s centre line—I’m not sure if this is actually the case, and maybe it is the psychological aspect of the wider fuel tank making the panniers seem narrower than they are, but filtering seemed easier with them fitted than on my F800. Day-to-day I only use the top box—the panniers are only used when travelling.

BMW Navigator V


Last to mention is the BMW Navigator V. This is a revamp of the Navigator IV with which it shares a form factor (meaning the mount and connector is the same) but little else. The screen is bigger, higher resolution and marginally easier to read in direct sun, and the unit is much, much more responsive. It also integrates more completely with the bike, allowing almost all functions to be accessed using the iDrive-type controller on the left handlebar of the bike. It connected without frustration to both my iPhone 6s plus and Sena SMH5 helmet speaker system which I will explain in more detail below.

The unit is notable because it allows access to the bike’s computer systems. This means you can see the status of everything from the dashboard on one simple screen—odometers, engine temperature, tyre pressure, fuel range, current speed etc, and also information such as the VIN and next service.

I do love a few good stats and it delivers on this front as well—it’s possible to view the number of gear changes, average throttle position, applications of both front and rear brakes and ambient/engine temperatures from the last ride.

One thing that frustrated me with the Navigator IV was that it was never happy to be connected to both my phone and headset at the same time—it prevented me from using the helmet controls to initiate Siri, start/stop music and answer phone calls (admittedly a rare occurrence). The Navigator V addresses this. Pair the phone and the Nav V can access data such as weather and traffic via the Garmin Smart Link app (which must be running in the background on the phone). Provided you don’t play music directly from the Nav V (which I don’t do) the headset is then paired using the handsfree profile (HFP). This configuration allows the headset to operate the phone correctly (Siri and music/phone) and also allows GPS directions and alerts to come through, as well as access to the phone’s address book to instigate calls from the GPS itself. While it’s possible to pair the headset and GPS using the A2DP protocol (which allows playing stereo music) this means the phone is only useful for calls and would require duplicating my music library on the GPS.

One complaint—the Nav V comes with 8 gb of internal memory which means with the full EU maps loaded it only has 180 mb free. Put another way, this is not enough space to perform a map update. This is not a cheap unit at around £500 so it seems like nickel-and-diming to death to require the user to spend another £5 on an SD card—either having 16 gb onboard memory or throwing in an SD card would have been much kinder.

Design


Nothing retro about this bike—the design language says ‘technology’ and is purposeful, functional and certainly impressive (I wouldn’t say beautiful, though). I quite like it—in fact, I think the Adventure’s design is more appealing than the standard version—particularly the black engine, frame and wheels.

The silver spoked wheels on the standard version were dirty in a day and a pain to clean due to the textured, anodised surface which held brake dust and dirt. The black wheels are the same texture but at least the grime won’t show as much.

I like that the aux/fog lamps are bolted to the upper crash bars on the Adventure as this is much more robust than the flimsy plastic mounts on the standard 1200.

I struggled with the colour when I placed the order—the white (with red lettering for 2016) was boring and the red had a seat in a slightly different shade which drove me crazy... so I ordered it in ocean blue metallic matt without ever having seen the colour in the flesh—now that I have it, I’m glad I went with this colour, it suits the bike well.

Extras


I insure via BMW’s own insurance (which is actually the cheapest for me, cheap being a relative term when living in London). For the Adventure, my premium increased by £25 but they required a tracker to be fitted which was carried out by the dealership before the bike was delivered. It has proven very sensitive as simply moving the bike off the centre stand triggers a text alert. If the bike is moved more than a few metres the tracker company is alerted which results in a phone call—if they are unable to get through they notify the police and provide ongoing location updates. The unit is claimed to provide up to 3 months of location updates even if the bike’s battery has been disconnected. I’m also able to view the location of the bike online at any time. I’ve not had trackers previously but they do provide considerable peace-of-mind. This particular unit only functions when the ignition is switched off (i.e. it doesn’t track the bike’s location when the engine is running for the conspiracy theorists)!

I fitted a tool tube inside the left pannier holder which is just the right size for me to keep my bungee cords clean and dry without them taking up valuable space in the smallish top box.

I have an R&G Racing drive shaft protector on its way. In my opinion this is something no one should be without (it prevented my last bike from being written off when it slid down the road in the Czech Republic in 2014)—at £17 it’s a steal and replaces the dust cover on the drive shaft to prevent contact with the ground.

I’ve also ordered Touratech upper crashbar extensions and a side stand foot enlarger to stabilise the bike when parked on soft surfaces. The extensions were somewhat reasonable (for Touratech) at £200 and the stand enlarger was about £30. Unfortunately both are on back order for up to 6 weeks so more on those later. While I have no doubt Touratech make high quality and well engineered parts, they are very expensive—they are also the only manufacturer of crashbar extensions which integrate into the factory bars on the Adventure.

Photos


I took a few photos while out and about the last couple days—I didn’t feel like bringing along my Nikon D-SLR so these iPhone snaps will need to do :) 






23 Nov 2014

Gear Shift Assist Pro—summary and myth busters


Two of the most-read posts on my blog are the ones relating to the Gear Shift Assist Pro (GSAP) system on the R1200GS which was launched earlier this year. Of note, the system was an industry first for road bikes with the ability to execute both upshifts and downshifts without using the clutch. However there was, and has been, little coverage by the mainstream motorcycle press.

If you’ve read the posts above you’ll know I couldn’t be more pleased with the system, so eight months on I’m revisiting GSAP from a functional side, based on questions asked in a number of forums.



Physical operation


  • The device is simply a sensor with a linkage which replaces the standard linkage between the shifter and the shaft on the transmission.

Electronic operation


  • During an upshift the system senses the movement on the shifter and when it passes a threshold, cuts fuel injection for 50–100ms to relieve torque on the driveline and enable the next gear to engage. 
  • During a downshift, the system senses the movement on the shifter and when it passes a threshold, adds enough fuel to relieve driveline torque, then readjusts fuelling to match the rev of the next gear down, which occurs over 100–150ms—basically the same principle as double declutching squeezed into a timeframe of about 1/10 second, or two virtually instantaneous blips of the throttle.

Clutch operation


  • Unaffected—the system does not integrate with the clutch in any way.

Shift feel/action


  • Subjectively, about 5–10% heavier than stock when shifting with the clutch—the geometry of the linkage/sensor is slightly different than the stock linkage which makes the shift action slightly heavier.
  • The shift feel is about 50% heavier when using the GSAP system (without the clutch). Gear changes using the system must be executed in a deliberate and committed manner—no half-hearted attempts.
  • Some people report that neutral is easier to find after the unit is installed due to this change in geometry (myself included).

Normal shifting (using the clutch)


  • Exactly the same as stock but with a 5–10% heavier feel as mentioned above. When using the clutch the GSAP system is inactive. The GSAP system takes feedback from the microswitch in the clutch lever which also deactivates the cruise control and/or the starter motor.

GSAP shifting (not using the clutch)


  • Upshifting requires the throttle to be open with the bike accelerating (even gentle acceleration). Downshifting requires the throttle to be fully closed with the bike decelerating. Any deviation from these two rules will result in a rough shift. 
  • Works in all gears on and off road once the bike is in motion—you must use the clutch as normal to move off and also when coming to a complete stop.
  • Once you are accustomed to the operation of the system it is particularly handy when riding in conditions which require a higher number of gear changes—for example, in urban areas or twisty mountain roads.

Learning curve


  • It took me about two miles worth of city riding to learn the system and have it executes shifts perfectly about 90% of the time. Eight months later, virtually 100% of shifts are executed perfectly within the parameters noted in the point above
  • Shifting from 1st to 2nd or downshifting from 2nd to 1st works as well as the other gears, but with experience you will get a feel about when it is appropriate to do this change using the system, due to the effectively higher engine braking/power while in such low gears.

System quirk


  • The R1200GS engine management cuts fuel flow during deceleration, but starts injecting fuel again in preparation for idle as the revs drop below approximately 2,250rpm. You can hear this on the bike as 1–2 slight pops from the exhaust. Downshifting using GSAP at or below that particular point will result in a rough shift.

Rider quirk


  • Most riders have ridden only manual bikes and it is very unnatural to keep the throttle open while executing a gear change. If you find the system rough on upshifts, it is nearly always due to an unconscious roll-on or roll-off of the throttle, even the slightest amount. It took months to retrain my brain not to move the throttle at all during upshifts which was resulting in the odd rough shift.

Do you have anything to add to this list, or any other questions about the system? Let me know in the comments below.

25 Jun 2014

Europe 2014: Day 5 - Berlin to Prague


For the second morning in a row, I’ve been rudely awakened by a housekeeper walking in, completely ignoring the ‘do not disturb’ sign on the door! Not good enough, Aldea Hotel!!

Ok—let’s reflect a bit. The hotel was fine—clean and functional as you would expect—with comfortable beds and the cost was reasonable. But this, and to a lesser degree the lack of functioning wi-fi, tainted the experience somewhat and had me woken up on the wrong side of bed. Check-out time is 11am anyway and she came in at 9:30! Grump grump grump.

We packed up and left with dark skies and showers here and there. After 45 minutes on the autobahn we exited to take the back roads, stopping off at a supermarket to buy some food for breakfast/lunch about 60km from Dresden.

As luck would have it, the skies properly opened but by the time we finished eating the rain had all but stopped so we carried on towards Prague.

The sun came out again and found the landscape changing to rolling hills with fast sweeping bends. At a roadside pull-out Zev noticed some foliage of which he wanted some specimens...

A few more for the specimen container.
...which gave me a few minutes to ponder the bike. Yes, the bike—not a lot has been said about it because it has hummed away dutifully without any backtalk. BMW really do make a cracker—even fully loaded it never wants for power, and the handling feels almost as light as when I ride it alone. I have been averaging 50mpg (10 less than my F800GS in similar conditions) and the bike has not used a drop of oil whereas the previous air/oil cooled engine is known to be quite thirsty at times.

If I had to split hairs, at certain revs and at specific engine loads there is a slight vibration in the bars but otherwise it is smooth as you’d want—considering it is a two cylinder engine with each chamber’s capacity the same as a 600cc sport bike, BMW have done well to smooth it out, and the engine loves to rev quickly and freely.

The only other thing of note is a few rough shifts with the Gear Shift Assist Pro system when it should have shifted smoothly—that said, 99 times out of 100 it shifts flawlessly under light throttle, heavy throttle and everything in between. Perhaps a future software update will resolve the odd rough shift. The literature about this option is quite right—the system is absolutely made for the type of riding I’ve done on this trip and makes the experience quicker yet more relaxing.

Ready for take-off.
One for the GS Europe group!
A trail in the woods from the roadside pull-out to an unknown destination.
Carrying on, we reached what was once the German/Czech border checkpoint—not a very inviting structure and no doubt a cause of anxiety to many people through the years.

All function and no form.
I admit I felt a little bit apprehensive entering the Czech Republic, simply for the reason that the language is absolutely foreign to me (whereas I can speak French and Greek readily and enough German and Dutch to do the basics). About five minutes into the country I stopped to refuel and, without thinking, spoke German to the clerk—of course being so close to the border she responded in German. I needn’t have worried, however, as it seems nearly everyone speaks English almost fluently.

The roads in the Czech Republic are much rougher than the German roads and require some acclimatisation—bends which cannot be taken safely at the speed limit are generally not marked. For example, on a 90kph road, in most countries a sharp bend will have an advisory posted at 50kph (or whatever is appropriate) but these advisories are few and far between here—extra concentration is essential. Also, where sections with a passing lane merge back to a single lane, they do so at the sign without advanced warning like most other places.

Nevertheless, the roads are fast and great fun, especially on a bike like a GS with extra-travel suspension so soak up the poor surfaces. I would say, among the most fun of any roads I’ve been on so far this trip.

We arrived in Prague around 5:30pm and made a few calls to find a hotel which offered secure parking. We found a room at the 4-star Hotel Louis Léger for €38/night, right in central Prague. I thought this was a mistake! The hotel was originally an aristocrat’s mansion and was named after the French poet. The rooms have 12-foot ceilings and antique-style furniture. Absolutely lovely.

After a bit of a rest, we headed out to dinner after asking our lovely hotel receptionist her recommendation—Restaurace & Music Bar Legenda.

Legerova at sunset.
 I was so hungry I forgot to photograph the food but it was delicious and inexpensive (roughly half the cost of an equivalent meal in London).

Drinks on the terrace.
One for the road.
After dinner, straight under the duvet for a bit of blog updating and then off to sleep.


Europe 2014 quick links


Day 1: London to Sint-Gillis-Waas
Day 2: Sint-Gillis-Waas to Bad Driburg
Day 3: Bad Driburg to Berlin
Day 4: Berlin
Day 5: Berlin to Prague
Day 6: Prague
Day 7: Prague to Wemding
Day 8: Wemding to Ammerschwihr
Day 9: Ammerschwihr
Day 10: Ammerschwihr
Day 11: Ammerschwihr to Eschdorf
Day 12: Eschdorf to London

Wrapping-up

20 Apr 2014

A few days on with Gear Shift Assist Pro on the BMW R1200GS


If you’re one of the 350 people over the past few days who read my first look about BMW’s new Gear Shift Assist Pro (GSAP) on the R1200GS, you’ll already know I’m quite ecstatic about this system.

Yesterday I covered about 250 miles around South East England including about 10 miles of byways with my cousin Carol who made an unexpected arrival from abroad earlier in the week. Respect to her for tolerating such a long ride the very first time she’s ever been on a motorbike!

Carol on a byway after 6 hours on the bike—still in good spirits!

Carol at Bookham Wood (unaltered photo—it really was that vibrant!)

The GSAP system is great on the open road, particularly for thrusting out of roundabouts onto 60–70mph stretches of road, but also when approaching and following through bends. It’s so quick and effortless—throttle off approaching a bend, kick it down a few gears, throttle on through the corner and back up to speed in one seamless motion.

It does take some mental reprogramming at times, for example when powering up a slip road onto a motorway, because you have to tell yourself not to back off the throttle when changing up a gear. Doing so, even a little bit, results in some unpleasant driveline shock. Full power, half power, even a quarter power it will change as smooth as anything, as long as you maintain the throttle position. It goes against everything you learned during motorcycle training.

The system even works unexpectedly well in Enduro mode on dirt/gravel byways because it engages the next higher or lower gear so smoothly. Something with which to experiment next time I’m on the byways without carrying another soul on the back!

Today the weather took a turn for the worst with grey skies and constant showers—not the best conditions for taking video—but I managed to get out and record a few clips.

Firstly, the GSAP unit which replaces the rod connecting the shift lever to the transmission (the unit is so shiny and new compared to my rather dirty bike):



And now the system in action:



Why do I think this system is a big deal? 


It is deceptively simple and the unit weighs next to nothing, while still retaining the ‘whole experience’ of riding a motorbike whenever desired, with a regular manual transmission and clutch lever. Quick shifters have been around for years, but GSAP is the first time such a system includes downshifts. The complexity is hidden away in the software which makes everything work, but the unit itself is not much more than a sensor to tell the computer what you’re doing with the gear lever.

This differs from the approach taken by other manufacturers, such as Honda’s excellent dual clutch transmission which caters to buyers who want to do away with the clutch lever altogether. But dual clutch transmissions come at a cost—they are rather heavy and complex, and the only manual control you have is via +/- pushbuttons on the handlebars. There is no proper manual option because these are not manual transmissions.

The GSAP system takes the best from an automatic—instant gear changes and smooth acceleration—without losing what many people consider the essence of riding a motorbike—connecting with the machine at all levels, and having full control over all functions.

If you get a chance to try out GSAP, don’t pass it up—it is impossible to form a meaningful opinion about the system until you try it for yourself.

Any minuses? Well, it's not cheap at around £500 installed, or £375 when installed at the factory (on the RT—not yet listed for the GS as a factory option). But it's only money. And sometimes you need to treat yourself.

Looking ahead


We have technology at our disposal to augment the functionality of mechanical devices in ways which could not be accomplished even 10 years ago. Some of it is for safety, such as traction control, ABS etc, and others are for fun, like the GSAP system. I believe it’s only a matter of time before other manufacturers offer similar types of tech for their bikes.

Doing away with throttle cables in favour of stepper motors, and computers to control the engine may scare off those hesitant to embrace change, but it’s important to bear in mind that jet planes—generally seen as the safest type of transportation—have been using fly-by-wire systems for decades.

In 2011, BMW announced their ConnectedRide concept, their vision of the future where, among other items, bikes and cars ‘talk’ to each other to announce their presence autonomously to avoid collisions—for example, automatically applying the brakes if a driver starts a turn without noticing a motorbike, while at the same time automatically flashing the lights on the motorcycle to warn the car driver.

I welcome systems like these because there are far too many distracted drivers on the roads, and anything that gives me (and my fellow road users) a little bit more safety can only be a good thing.

17 Apr 2014

First look: Gear Shift Assist Pro on the BMW R1200GS


The original Gear Shift Assist system has been available for a number of years on several BMW models of the K- and S-series, enabling clutchless upshifts by briefly cutting the fuel supply when the system senses an upshift via the foot lever.

Gear Shift Assist Pro (GSAP) is the next generation of this system, announced with the introduction of the updated R1200RT last November. The Pro version allows for both upshifts and downshifts and according to BMW this is a world first on a production motorcycle.

The R1200RT and the R1200GS are mechanically similar bikes, sharing an engine (with a couple of differences) and parts of the suspension system and frame—BMW has made available GSAP as an ex-works option for the first time on a GS. It is not compatible with the 2013 models, but only the 2014 update (models with the steering dampener)—namely those built from approximately 15 August 2013. There is no official word why this is the case, but I suspect it is simply that the 2014 spec bikes have a connector fitted in the wiring loom for the CAN-bus.

The Gear Shift Assist Pro unit

The GSAP system intrigued me greatly so I put in an order. I was informed that my bike was within the first 300 built which support the system—lucky me! BMW had some delays relating to the software which held up the order for a few weeks but the people in the service department at BMW Battersea (thanks Phil, Shanon and James!) had it installed on my bike within 24 hours of receiving the unit. Good communication and good service are what make this dealership excellent!

Below is BMW’s (rather thorough) explanation is included as part of the press kit for the new RT:


Optional Gear Shift Assistant Pro for changing gear with virtually no interruption in power flow.


The BMW Gear Shift Assistant Pro is another world first for production motorcycle manufacture. Compared to the Gear Shift Assistant already featured on the superbike models such as the BMW S 1000 RR, the system’s functionality has been extended for use on the new R 1200 RT and adapted to the specific requirements of a touring bike. The Gear Shift Assistant Pro enables upshifts and downshifts to be made without operation of the clutch or throttle valve in the load and rev speed ranges that are of relevance to riding, both increasing comfort for the rider and providing an added touch of dynamism. The majority of gear changes can be carried out with the help of the Gear Shift Assistant—starting off is one of the few exceptions to this.

When accelerating, the throttle valve no longer needs to be closed for gear changes, allowing the power to flow with barely any interruption. And when decelerating and shifting down a gear (throttle valve closed), automatic double-declutching is used to adjust the engine speed. Gears are engaged in the usual way with the footshift lever. Shift times are considerably faster compared to gear changes with operation of the clutch. The Gear Shift Assistant is not an automatic shift system, but rather just an aid for changing gear. When gear changes are carried out with the help of the Gear Shift Assistant, the cruise control is automatically deactivated for safety reasons.

The system works by employing a sensor on the gearbox output shaft to detect the rider’s shift request and trigger the assistance mechanism. By increasing or reducing engine torque by the required amount, the load on the powertrain is effectively eliminated to allow the shift dogs of the next gear wheel pair to intermesh in the same way as when the clutch is used. No gear shift assistance is provided when changing gear while operating the clutch, or when shifting up with the throttle valve closed (overrunning) or when decelerating. Neither will any assistance be given if the shift lever is not in its proper starting position when shifting up or down.

Assistance is available when downshifting with the throttle valve open, but this can provoke severe load change reactions, particularly in low gears. The same effect may be produced when changing down without operating the clutch while cruising at a constant speed. BMW Motorrad therefore recommends always using the clutch to change gear in these riding situations. Riders should also avoid using the Gear Shift Assistant at rev speeds close to the red line.

[ends]


So what’s it like to ride with GSAP? 


In a word (okay, two words) bloody amazing! Being a ‘school’ night I’ve only ridden about 20 miles around London so far with the system but I can’t wipe the smile off my face.

The sound is similar to dual clutch systems used on BMW M cars, higher end Audis and Volkswagens etc—complete with a pop from the exhaust on each gear change. And it’s fast, I’d say not much more than 1/10th of a second when upshifting. Combined with the high torque of the boxer engine, this translates to turbine-like, seamless acceleration from a standstill, smoother and faster than is humanly possible using the clutch.

It does take a little practice to acclimatise to the system and learn its quirks.

At a constant speed the system is not happy to make a gear change and this can result in some not-so-nice driveline shock. When decelerating the system doesn’t operate at all for upshifts.

Downshifts while decelerating with a closed throttle are accompanied by an automatic blip of the revs and the shift is slightly slower than upshifting to accommodate this—I’d say downshifts take 2/10ths of a second. It’s possible to downshift at a constant throttle, or around 10% throttle, but this can also cause a bit of driveline shock.

Gear changes using the system require dedication—no half-arsed attempts. You need to commit to the gear change in one smooth go, and the lever feels slightly heavier when using GSAP than when using the clutch normally. During one halfhearted 1st–2nd change I ended up in neutral—call it operator error.

However, learning its quirks has only taken about 20 miles of city riding (and associated frequent gear changes)—nothing in the grand scheme of things. In that short time it now almost feels agricultural to change gears with the clutch.

With Easter weekend looming—four days off (yay!)—and favourable weather in the forecast, I will have a chance to get out of the city on roads where this system will be in its element. Watch this space!

Brief update one day on


They—presumably experts—say during sleep your brain processes the things you learned that day. I guess they have a bit of a point. Riding to work and back today, everything just clicked—no herky-jerky, no missed shifts—everything as smooth as silk.

If only all things in life had such a comfortable learning curve.

Did I mention I like the GSAP system? Still smiling here!

Further information