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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    Don't forget dynamic suspension on the new bike. Not sure about thousands less in price for a camhead. Everything I'm hearing is price should be the same. There are plenty of people stil interested in the camhead and I haven't heard about any big discounting at all. See the survey in another thread where 2/3rds say they would get the camhead vs. Wasser Boxer.

    A few more items:

    E-gas throttle control/settings rain mode, endure mode, etc
    new more rigid chassis
    Fresh look
    lighter wheels
    radial mounted brakes
    Multi controller for NAV
    Improved windshield design/adjustment/looks
    New stouter final drive
    No more throttle sync issues
    Single spark plug per cylinder
    Improved efficiency of vertical flow through
    Slipper clutch
    Improved gearbox
    no alternator belt
    longer swing arm for improved traction

    Oops, I guess you had some of these listed already.....

  2. markjenn

    markjenn Long timer

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    Maybe not exhaustive, but comprehensive. Nice job.

    - Mark
  3. Emoto

    Emoto Sure, why not?

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    WHAT? :huh
  4. EJ_92606

    EJ_92606 Rider

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    Electro-motive throttle actuator syncs the throttles on the fly...put your twinmax on ebay and get on the wait list :evil
  5. dmac57

    dmac57 Long timer

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    There was mention of something along the lines of "automated decompressors" during startup. Can anyone point me to that? Going to have to float a valve for that to happen, and I hadn't seen that anywhere.
  6. EJ_92606

    EJ_92606 Rider

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    I found this in the BMW press release. No sure if it answers your question or not. You can read more on page 177 of this thread

    As before, the two respective camshafts are driven by a chain running in the shaft behind the cylinders (on the right-hand side of the engine from the counterbalance shaft and on the left from the crankshaft). The timing chain drives an intermediate shaft between the intake and exhaust camshaft and it is from here that power is transmitted to the camshafts via spur gear pairs. At each exhaust camshaft there is an centrifugal-force-driven decompression facility which facilitates the start-up process. This makes it possible to save weight in the starter motor and battery.
  7. taran1900

    taran1900 Adventurer

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    [​IMG]
  8. twray

    twray Adventurer

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    Seems unusual for one cylinder cam chain to run off the crankshaft and the other running off the counterbalance shaft. Seems some valve timing issues could result in gear wear from the counterbalance shaft and crankshaft relationship....
  9. markjenn

    markjenn Long timer

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    There's no TB sync maintenance on the S1000RR and it's an inline-four. Perhaps the same technology.

    - Mark
  10. 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.
  11. 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
  12. 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.
  13. 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.
  14. Marki_GSA

    Marki_GSA Long timer

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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.
  15. 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
  16. 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
  17. 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.
  18. 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.
  19. Hunter6

    Hunter6 n00b

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

    EJ_92606 Rider

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