The All New LIQUID COOLED R1200GS threadfest

Discussion in 'GS Boxers' started by Dorsicano, Feb 3, 2011.

  1. EJ_92606

    EJ_92606 Rider

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    I think most engine architectures share a common throttle body so there is nothing to sync...the nature of a boxer engine makes sharing a throttle body problematical. Although a beast like the S1000RR probably has individual throttle bodies for each cylinder.
  2. markjenn

    markjenn Long timer

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    A few of the newer non-single bikes with an emphasis on efficiency do use a single TB (the NC700X comes immediately to mind) but I think it is uncommon.

    The S1000RR definitely has individual TB's, but I've never seen anything definitive about why they don't require any synchronization. It is definitely drive-by-wire, so each TB is controlled by a servo but I would still think there would need to be some calibration to make sure all the servos and position sensors are properly synchronized. It may be one of those things where BMW feels that once set at the factory, it should never go out of synchronization. I certainly know of many bikes that have servo TB's and still have conventional air bleed screws and require periodic synchronization by balancing manifold vacuum with the bleed screws. Short of having a MP sensor that measures vacuum in each inlet tract, I don't know of any way for the system to adjust itself based on running conditions.

    - Mark
  3. EJ_92606

    EJ_92606 Rider

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    I read something about the new GS having something that measures vacuum and then makes adjustments constantly.
  4. Kenbike

    Kenbike Been here awhile

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    Very good list, I big factor is a Yamaha S10 is 13K, and I plan on $3500 in mods out of the box so it will be 16.5 and the value will drop pretty fast. 2012 BMW is 17K and the question is can I live with it mostly stock and add about 1K in mods? A 2013 set up the same will be 19.5K estimated and the aftermarket will not have a pile of items so could I might have to live with 1K in Mods. Reviewing used bike selling prices the BMW does not drop as fast as the S10 so in 5 years the diff in total cost may be very small. I was going with a 1200 gs in 2009 and picked up a 2 year old KTM 990 Adventure and it is a great bike, just find it is great off road and good on the road and my needs are great on the road and ok off road.
  5. Marki_GSA

    Marki_GSA Been here awhile

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    The current boxers don't require a sync on the idle circuit (idle servo) its only the mechanical cable part that you can adjust part throttle. I don't know if the new drive by wire uses a separate idle, main servo or if it's just one but however they do it now on the idle could be used on the new system.
  6. ragtoplvr

    ragtoplvr Long timer

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    You can see a centrifugal decompression device on the exhaust cam in the upper right hand corner.

    Rod
  7. ragtoplvr

    ragtoplvr Long timer

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    I suspect they wanted the slack side of the chain on the bottom. Look at some of the issues they had with the slack on the top with the oilheads. to do that one side must have reverse drive.

    Rod
  8. cug

    cug --

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    That reminds me of my Tiger 800: I hook up the laptop with diagnostic software and it tells me exactly how the TBs are out of sync, so it knows exactly what's wrong. It's NOT ride by wire though and and it doesn't have a computer controlled mechanism to adjust - so I have to manually adjust them. Would have been so much nicer to get ride by wire and have them automatically adjust via build in mechanism.
  9. Dorsicano

    Dorsicano Adventurer

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    New GS retail price in Germany (19% VAT included) has been quoted by a dealer to an inmate in another bmw forum as follows:
    Base price with ABS €14,100 (plus delivery)
    Comfort pack €650
    Aktiv pack €890
    Touring pack €1,490
    Dynamic pack €2,100

    I'm impressed. They did not go over the top.
  10. Hunter6

    Hunter6 n00b

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    In Holland €16950. €400 less then the 2012 GS :clap
  11. EJ_92606

    EJ_92606 Rider

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    Throttle sync is part of routine maintenance...every 6k on the boxer motors.
  12. marchyman

    marchyman Cam Killer

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    Of idle throttle sync. The idle balance can (and should) be checked, but if it is off by more than 25 mbar BMW says check for air leaks and make sure the valves are the same side-to-side. There is no other adjustment specific to idle balance. That's through '09 models... I assume the camheads are the same. :dunno

    It wouldn't surprise me if the LC bikes are the same, less any off idle throttle cable adjustments.
  13. EJ_92606

    EJ_92606 Rider

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    I never said anything about idle balance, just the routine throttle synchronization on camhead and previous boxers. The new water boxer does not require this.
  14. Marki_GSA

    Marki_GSA Been here awhile

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    I was using the current none udjustable idle sync as an example of how they currently know where the valves should be. I. E they can do it now so they can do it for the whole setup on the new engines. I already stated you can and need to adjust the off idle on the current models because it's mechanical.
  15. Montauk

    Montauk Been here awhile

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    I am trying to track back to my question to BMW Rep from NJ for him to recommend me to go with Standard GS with low seat option. I had shown my 30" inseam limitation and need for a lowered suspension to him. With Standard, I barely got the bike off the stand and was tippie towing.

    Someone here mentioned that Dynamic ESA is not available with Low suspension for the WC. I searched google and could not find the answer. I wanted to confirm this.

    Called my local dealer, he said with current model ESA is not available with low suspension, but he could not confirm same holds true for the new water cooled GS.

    Does anyone have any answer, or have talked to the BMW rep and gotten any answer whether Dynamic ESA is available with Low Suspension.

    .... I wish I was 6 foot tall, and then I wouldn't have had these problems.
  16. JimVonBaden

    JimVonBaden "Cool" Aid!

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    It looks like it, but it depends on the diameter of the swingarm. I am guessing yes.

    Jim :brow
  17. Treadless

    Treadless seeking adventure

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    Have you had the opportunity to mount the h2ohead? I found the seat and seating position much more accommodating to those of us that were short changed in the leg department. And the overall ergos fit me much better than my '05 even with the changes that I made to it. :baldy You may find that the bike may not need to be lowered.

    Oh, and about your question, I have no idea about a lower ESA version.
  18. Dude69

    Dude69 Usurper of Gov'ts

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    30" inseam.. you should be fine on a standard GS. Mine tops out at 29" and I rode an 08 GS and able to ride 800GS and taller bikes...

    Motard stops are the rage... ;)
  19. Montauk

    Montauk Been here awhile

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    That is amazing. I couldn't even get the F800GS off the side stand. My dealer always had to remind me that 800GS just not or me, but 1200GS is better option.

    I saw one one gentleman at the Long Beach show, about my height and probably same inseam as mine, mounted the bike and was tippie towing. I went before he did, and I was nervous. He said even if he does not flat foot, he's okay with the I pipe tow.
  20. Montauk

    Montauk Been here awhile

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    Yes, I was able to mount the bike, albeit with BMW Rep from the back to make sure if I lift up and can't touch the ground I didn't wanted it fall. Bi was on the toes an not even the feet balls.