ESA Question

Discussion in 'GS Boxers' started by BearII, Aug 29, 2012.

  1. aGremlin

    aGremlin Been here awhile

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    I wouldn't bother about trying to get it perfect, if you're that anal you've probably already replaced the suspension. ESA suits a majority of riders who are too lazy to adjust and just ride. My boss goes out for a ride just to set his suspension up... he wouldn't be satisfied. My last KTM with normal suspension, I told the shop there were some fundamental issues, so they got it more ball park and then I just rode it. I can adapt my riding to the suspension anyway.

    Remember that on a GS Adventure the weight of the fuel alone stuffs up the suspension settings. 30kg difference in fuel between full and almost empty would do that...
    #41
  2. Snowy

    Snowy Long timer

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    Very good reference info as always, thank you for taking the time to post it. Good information for someone like me who is considering buying the R1200Gsa in the next few days.

    One point on static and rider sag, after setting up my F800Gs with ohlins for 2 up riding, I quickly discovered that the available range of springs left me with less than ideal static and rider sag conditions.

    The heaviest spring I could get, with the right amount of preload to achieve correct rider sag 2 up, gives me zero static sag, and even with the preload wound right off for solo riding still is set with minimal static sag and not much rider sag (about the minimum you'd want for off road riding).

    2 up, for it's intended riding it isn't much of a problem, until you get stuck on a steep slope and the suspension unloads while you attempt restart. I go from being able to almost flat foot (with the low seat option) to not having a hope in hell as it unloads and gets taller. This is problematic.

    The only solution would be stiffer shorter springs with no/minimal preload. They don't make them. I have an Ohlins that is around 22kg/mm at the moment. I see the GSA seems to use lighter springs. That might be a good thing, as I have Ohlins springs in 17kg/mm, and 19kg/mm already on the shelf.

    I take it the GSA has enough aftermarket springs to cope with the 2 up I want to do? Anyone have a reference chart they use?

    Thanks guys.
    #42
  3. Hair

    Hair Free to a good home.

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    Hi Lobby.
    The problem of getting the correct spring rate, is that it's only good for a certion range of mass. Overload the bike and you have the same problems that I am dealing with. GSs are suppost to be similar to 1970s trail bikes. That would make the spring rate not as critical as it is on a modren MX bike.
    I guess that I will have to take a chance and swap the spring. My reluctance in doing so, it because it takes me down a rabbit hole. As my weight changes from diets and such. I end up with a boat load of springs. It sucks. But that's life
    #43
  4. BearII

    BearII No, it's not complicated

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    Hey All - OP here... thanks for all the good feedback and clarifications. I have decided to NOT get ESA on the new bike. I have Ohlins on my current bike (non-ESA) and am simply going to swap that out with the stock shock on the new bike. Keeping it simple for my next segment of the RTW as I head off to the southern hemisphere.
    #44
  5. bemiiten

    bemiiten League of Adventures

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    I have both a Ohlins equipped GSA & a new Camhead with ESA. You are making the right choice. Simply no comparison for this 200lb rider. I plan to put non ESA Ohlins on the Camhead so I can adjust front & rear independently, the way it should be.
    #45
  6. BearII

    BearII No, it's not complicated

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    Several others have told me the same thing, glad to see it confirmed once again! Tough to find a non-ESA model, waiting for a dealer to step up now. Have RFQ's out to 4 dealers, we'll see who can produce. Lots of push back against ordering one... If anyone knows a great dealer anywhere in the US that would like this simple cash deal let me know. :deal
    #46
  7. Happy BMW

    Happy BMW Litter Box

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    Try Ride West or Big Sky BMW
    #47
  8. dirty_t

    dirty_t Been here awhile

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    I was just wondering the same thing - thought I'd resurrect this thread and see if anyone has any additional info since it was posted. I weigh about 160, so a good bit lighter than the 175-180 lbs nominal weight rider these ESA shocks were apparently designed for. I am finding the overall ride on the harsh side, solo or two up. Two up is a bit better, I can adjust to 1+luggage, rather than 2up, and it feels like it's about where it should be. But for solo work I'm feeling like there's just too high a spring rate.

    Too bad they didn't set up the computer to sense the load and baseline the sag. (Guess that's closer to what D/ESA does).

    Anyway, sounds like re-springing isn't an option on the stockers. Would rather not bite off $2-3k for Ohlins or whatever else is out there. Anyone come up with other options?
    #48
  9. TuonoBiker

    TuonoBiker Been here awhile

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    I haven't heard of a re-spring option out there for stock suspenders. Ohlins is probably the best way to go. You could always buy Ohlins in the non-ESA variety and just have a pre-load knob to adjust when you switch from 1-up to 2-up, etc.

    I'm in the 185lb category and wife is around 115. For me the solo position works well...for sport-riding, I like to crank a bit more pre-load in and go with 1+luggage. 2-Up postion works very well for her & I together with a full load ready for a camping trip.

    Yeah, there is no "setup the computer to sense load and baseline sag..." ESA is not intelligent...simply motors tied to a button to give you preload and rebound adjustment. Nothing intelligent at all about it.

    For me, it works well, other's hate it with a weird distaste and passion since it's "problematic" and "does nothing". Personally, I believe the people that hate the stock suspenders are probably well above the "average" weight it was setup for. I'm sure I'll get flamed for being in the "I like ESA" camp; probably told I don't know good suspension too.

    My Tuono Factory had Ohlins front and rear and I had the dealership help me set it up. (they had an Ohlins certified guy on staff who was a mechanic for the dealer and an amateur racer...the man knew suspension). That was probably the most compliant, confident, sport suspension I've ever ridden. Nothing can beat high-quality, properly setup suspension.
    #49