New Sibirsky Extreme bike build

Discussion in 'Thumpers' started by Colebatch, Jul 29, 2015.

  1. 250Keith

    250Keith Been here awhile

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    WOW!! What a great Thread and read, Thanks for all the hard work and info.
    I'm so In on this.
  2. BDG

    BDG Long timer

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    My bike was one of these 2 "base" bikes as mentioned above. Indeed mine was Lyndon's first development mule prior to him building Basil. Both bikes performed superbly and had a decent test with the trip to Mongolia for me and Ian's to Magadan, along with subsequent testing in the Alps. The temptation is always there to upgrade things as Lyndon develops new mods. Walter's bike is wetting my appetite!

    In addition to Lyndons 75,000 ish kms on Basil, mine and Ian's bikes have covered 24,000 and 32,000 kms and have performed brilliantly.

    There's a couple of write ups on my trip to Mongolia here with plenty of pictures

    http://www.ktmforum.co.uk/adventure...-mongolia-2-x-690s-2-months-10-500-miles.html

    Plus the original blog here, but it starts at the last post

    http://www.speedcouriers.co.uk/category/manchester-to-mongolia/




    Here's what Dave at Adventure Spec had to say after having a go on Walter's bike


    "Some days you get to work, settle in at your desk, drink some coffee, type a bit...

    Other days you roll up at Lyndon Poskitt Racing and take Walter Colebatchs brand new LPR690 for a spin...

    We've ridden a lot of bikes over the last 10 years, but this was something pretty special. Keep an eye out for a forthcoming review and short film about the visit.

    p.s. The second type of day is definitely the best!!!

    Even for my short ride yesterday I couldn't believe how planted it was on tarmac even on Nobblies and the throttle response was creamy smooth. Didn't matter how much of a fistful I gave it anywhere (mid cranked-over-corners included) it just ran like it was on rails...and the overtaking...I didn't know you could get power like that from a single, it felt like my old VTR1000!"
  3. gunnerbuck

    gunnerbuck Island Hopper

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    Are you kidding? Not carrying a spare,? The needle takes less than 10 minutes to change, easily done without carb removal..


    Great build thread keep it coming..
  4. cometeus

    cometeus Adventurer

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    Yeah. I understand. If anybody needs it there would be the possibilty to spend 100k Euro on a ADV bike witch will do the laundry for the driver (and of course also all the other "work" housewifes do the day)^^. As you said, it depends on the wishes and the requirement of the driver/buyer of such bike. I think, i´d be ok with a groundprice of 13k euro of the bike and 12k euro for some prepare work.
    An experienced rider like you needs a equivalent tool. Your expactations on the new bike are quite high caused by the reliabilety of the "old" one and your know how in advriding. A bike like this will be bought only once in a decade (In your case maybe in a half). So it has to be well designed and equipped. And thats why i love this thread and the effort you and Lyndon are put into to make this project public.

    Obviouse ambiguose. *hehe*

    :y0!A question of mine hasn´t answerd til now, so i want to repeat it: Is there any additional work on the upper part of the engine for getting rid of the bad rockerarmdesign? In other threads people are thinking the rockerarmproblems are caused by not enough oil in the rockerarm section (camshaft and armbearing) during bad driving conditions or less oillevel), so maybe you or lyndon have some thougts about this big designflaw on side of ktm (witch could end and advtrip!) to share with us?

    Aja, anathor one: May i havn´t seen it but what year was boris built?
  5. Colebatch

    Colebatch "Moto Porn"ographer

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    I will let Lyndon talk about Rocker arms. He could probaby write a thesis on it.

    Boris is a 2009 model, built at the end of 2008.
    F650Dakar_Norway and pebble35 like this.
  6. Mat

    Mat Long timer Supporter

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    Oh, something easy: Why are the tank graphics "stretched" with these lentil-shaped holes? To allow for expansion?

    Truly a masterpiece. Can't wait to read about what you are going to do with it.
  7. Pyndon

    Pyndon Long timer

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    Somewhere on two wheels!!

    Yes we (LPR) can do additional work to improve longevity of the rocker arms. Many of the problems came from a bad assembly process, not a "bad rocker arm design" IMHO. There are two modes of failure, both of which are linked to assembly process. One is bearing failure due to point loading (caused by excessive stake pressure barreling the pin) and the other is pin float (when the staking pressure is not enough causing the pin to drift out of the arm). Both can and have caused catastrophic failures, both can and have been caught before failure (you can hear them both going). Neither of these are caused by oil starvation in my opinion, solely manufacturing issues.

    To allow the tanks to breathe. The paint and the decals on the front tanks have to be breathable otherwise it will just lift off as the front tank material is breathable.
    F650Dakar_Norway and Mat like this.
  8. juno

    juno Long timer

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    I for one would like to hear more about this. I have researched the 640 threads where those folks have replaceable bearings and stake them in. I was considering trying that. I had not considered the point loading part, how can you tell and what are the options if that is the case? Do you have any interest in selling new rocker arms that you have massaged?
    Dan950ser likes this.
  9. dirty_sanchez

    dirty_sanchez Dirty_Sanchez

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    690 Rocker Arm Thread Point Loading and Staking Thread NOW!

    Come on Lyn-It's not like you're busy or anything.

    Staking- I understand that one. Point loading? I'm from South Louisiana-can someone please 'splain to this coon-ass.

    Splain it to me and I'll teach you how to start a roux and skin a gator.

    Dirty
  10. levain

    levain STILL Jim Williams Supporter

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    Would anyone need more of a reason:jack:clap
  11. MAXVERT

    MAXVERT O.G. on da O.C.

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    Don't you have a loc tite solution Dirty.

    But to the point, seems like some of the newer '14 and '15 bikes are having rocker problems
    from poor staking techniques at the factory.
    Too much staking, not enough staking ?
    It would be nice if someone came up with a procedure to solve this issue
    I've had to do rockers and a cam on two '08's I've owned.
    I don't really need to fuck with the rockers on my '14 in the middle of wherever
    if we can find a fix.

    Max
  12. ullukk

    ullukk Been here awhile

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    Excellent bike, great thread, thanks for sharing.
  13. joenuclear

    joenuclear Still here....

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    DS is no longer working with LocTite.
  14. joenuclear

    joenuclear Still here....

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    Can I purchase a set of properly staked rockers from your company. :y0!

    [Unless you plan on teaching the inmates how to...]
  15. dirty_sanchez

    dirty_sanchez Dirty_Sanchez

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    I use worn out chewing gum now fellas.

    I've staked bits parts and pieces through the years on a 60 year old arbor press willed to me by my grandfather, but I'm still hoping somebody jumps in with a Point Loading explaination.

    MaxV-bonding that rocker arm bearing pin would be entirely doable with products in a red or blue bottle, but I'd much prefer a sturdy interference fit like a pin staking measure offers.

    Dirty
  16. cometeus

    cometeus Adventurer

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    I´m able to signify (?) the "floating pin". This is a known problem. It´s solfed by doing a sufficient center punch by yourself on the center bolt of the rocker arm.
    But my imagination/bad english is not enough for the "bearing failure due to point loading". What does this mean exactly? To much pressure by pressing the bearing in the rockerarm or canting the centerbolt of the bearing due assembly? Sry for the anoying demand but its one of the more interresting issues of the 690ty that has to be done/solved on so many bikes ... .
  17. juno

    juno Long timer

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  18. GypsyWriter

    GypsyWriter Yup, I'm a girl.

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    So, what's the plan for Boris? A new Sibirsky ride in 2016? :lurk Any new pics of it in action out on the dirt and dusts, or is it too late in the year now for that?
  19. Bli55

    Bli55 -

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    Oh, you've got to be kidding me! 2 months later, 20 pages in, and only just seen your topic!! :nod

    Better get reading... :evil :evil

    ---------------------

    Alright then, a few things still cause a query:
    (in order of concern :D)

    1) Height of front fender. Are you getting it raised?
    2) GPS - NOT at the top!??
    3) An HID bulb in that halogen Hella projector, or have I misunderstood your intention?
    4) Seemingly small front brake - would be interesting to compare your impressions against the X-Ch.


    Thank you's...
    Walter & Lyndon, Ionut, Lucas. For the build & technical insight, the gory details, and the experience that has gone into this bike!
  20. klondike1

    klondike1 Nobody in particular

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    In