BMW G650X Challenge Thread Index

Discussion in 'Thumpers' started by GB, Apr 24, 2008.

  1. mtncrawler

    mtncrawler Long timer

    Joined:
    May 17, 2003
    Oddometer:
    1,407
    Location:
    Fort Collins, CO
    Thanks TB - when I bought the bike it had the 14/47 combo on it. I have the OEM 15T front (few miles) - bike only had 950 total miles. I'm just feeling things out right now but thought about changing back to OEM ratios just as a comparison. Being new to the X, I didn't want to jump the gun and change things, but trying the 15T would be easy, before deciding on purchasing another ratio.

    Thanks mac, Good info to know - as stated above - new to the X, but have ridden lots off road on GSA and many moons ago owned a couple enduro motos like the XR/DR...
  2. Colebatch

    Colebatch "Moto Porn"ographer

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    Jul 7, 2006
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    4,094
    Location:
    Schmocation
    I replaced my rear disc with one from Scheffelmeier (the www.bashplates.de link below) a while back and its fine.



  3. snooker

    snooker AttitudeIsEverything

    Joined:
    Feb 19, 2010
    Oddometer:
    1,778
    Location:
    Loveland, Colorado
    You also need to consider the chain lengths and the impacts on wear. For instance the stock chain length is 112 so 112/14=8 exactly meaning the same link always hits the same sprocket tooth every revolution so 14 is not good. Likewise on the rear, every 7 revolutions of the chain has a chain link hit the same sprocket tooth (112 * 7 = 49 * 16).

    From a wear perspective alone, 15/47/112 is the sweet spot and certainly a 14 front with a 112 chain is really a pretty bad choice. For that matter the OEM was 16 and 112/16=7 exactly which is just as bad, I don't know how BMW can explain this.

    Awhile back I received quite the education on this topic, which I summarized on this post: LINKY

    ... worth a look IMHO, especially the link to the f650 chain wear chart.
  4. pampaX

    pampaX Been here awhile

    Joined:
    Aug 3, 2007
    Oddometer:
    444
    Hi Walter, thanks that's what I ended up buying (still hasn't arrived). There aren't lost of options and in the end all the bits I've bought from Stephen have been very good, so thought why not trying.

    (BTW: read you sibirksy thread, it was great thanks :freaky)

  5. jonnyc21

    jonnyc21 Trials Ninja

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    Feb 8, 2011
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    1,986
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    Boise aria
    I thought the 16/47 stock was the country and the Challenge was 15/47... learn something new every day I guess.
  6. macadamia

    macadamia XK Red 27 Technique

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    Dec 5, 2010
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    Idaho Falls, ID
    your spec quote is correct...
  7. compositeboy

    compositeboy What, me worry?

    Joined:
    Mar 25, 2009
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    99
    Location:
    Adirondacks, NY
    Ask and ye shall receive! Thanks all, what a great forum!

  8. snooker

    snooker AttitudeIsEverything

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    Feb 19, 2010
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    Loveland, Colorado
    Nope you are right, Yeah sorry I forgot I was not on the XCountry thread :lol3. I think the other points (like not using a 14 very often) are still valid but nice to see the XCh is setup "optimally" for chain wear even though they tried to give the XCountry some more highway speed I presume.
  9. tbarstow

    tbarstow Two-wheelin' Fool

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    Jul 9, 2007
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    4,082
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    Viva Lost Wages!
    Probably trying to make up for the little wheels on the XCountry.
  10. LangKat

    LangKat Adventurer

    Joined:
    Jul 22, 2011
    Oddometer:
    68
    Location:
    Johannesburg
    Turns out the spring got knocked free; so it wasn't pulling the locking mechanism far enough back. It properly got knocked out by the pump which doesn't fit in the seat properly any more and falls out a bit.

    [​IMG]

    Fixed it with a cable tie

    [​IMG]

    If this ever happens to you, the trick to getting your seat off is to hook the mechanism with a piece of wire from the right hand side (key side).
  11. LangKat

    LangKat Adventurer

    Joined:
    Jul 22, 2011
    Oddometer:
    68
    Location:
    Johannesburg
    Turns out my shock had a leaky bladder... Nothing to do with the subframe. Here some pics of mine. Sorry for the poor quality.

    [​IMG]

    [​IMG]

    [​IMG]
  12. snooker

    snooker AttitudeIsEverything

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    "Bladder". What bladder? Where exactly was it leaking? I'm interested because I just installed a new Yacugar on my XCountry and the hose going into the banjo fitting itself (on the remote reservoir) was seeping a little so I tightened it. Not the banjo bolt fitting or the bolt, but just where the stainless hose screws into the banjo bolt.

    Is that the stock mounting bracket and mounted position as sent from Hyperpro?

    Also, the Yacugar has a totally different mounting position than their Hyperpro sister shock. It is just below the exhaust pipe in front of the subframe. This puts a really weird angle stress on the hose and banjo bolt, straight away from the reservoir. Not twisting the banjo bolt (like trying to unthread it), but rather try to go the direction of the axis of the bolt, 90 degrees away from the rez.
  13. LangKat

    LangKat Adventurer

    Joined:
    Jul 22, 2011
    Oddometer:
    68
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    Johannesburg
    My understanding is that the bladder separates the gas from the oil in the internals of the reservoir. Mine had a tiny hole so the shock lost gas pressure. Definitely not related to the problem you had.

    It is the stock bracket from Hyperpro but mounted a bit differently because of the steel subframe.

    Can you send a picture of your Yacugar's mounting position; sounds like a strange place to mount the reservoir.
  14. 4Rider

    4Rider Dedicated Lurker

    Joined:
    Apr 19, 2005
    Oddometer:
    168
    Location:
    Bottom Left Corner far from Maine
    My son has been looking for an X-Challenge for a while, and located one for sale at a BMW shop in Fresno. He put a deposit on it to hold it until we can get up there to look it over. His work schedule means he's tapped me to drive up and look the bike over for him, and to buy it if it proves out.

    I'm wondering if anyone here is familiar with the bike, and can provide any background info. The photos of the bike shows an "ADV" sticker, so I'm hoping one of you all has some info. It will be a 10-12 hour round trip to drive up to look at the bike, and while I absolutely don't mind making the drive to pick up a decent X-Ch, I sure wouldn't mind knowing ahead of time if there was some good reason to pass.

    Confidentiality of all PM's guaranteed!

    Thanks,

    Mark
  15. LangKat

    LangKat Adventurer

    Joined:
    Jul 22, 2011
    Oddometer:
    68
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    Johannesburg
    http://www.advrider.com/forums/showthread.php?p=16623442#post16623442

    Check the post by Colebatch under it as well
  16. Butters

    Butters Kwyjibo

    Joined:
    Oct 10, 2008
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    3,121
    Location:
    NoVA
    http://www.bmwoffresno.com/new_vehi...K2013J4I00I48JPMQ7220R0&veh=42813&pov=3168656

    Looks mostly stock other than some handguards and smaller TT engine protection parts adjustable shift lever. Still has the airshock.

    Price seems a bit high for the private market, but probably about right from a dealer. I haven't really heard about too many issues with cracked subframes except on bikes that have been heavily loaded and ridden pretty aggressively. Who knows what has happened in that bikes life, but given the mileage and relatively few farkles, I'd be surprised if it had subframe issues. It certainly never hurts to check.

    I would be certain ALL the recalls have been done, which is likely since it is coming from a BMW dealer - they should be able to tell you. I would also be sure to start it when it is COLD to make sure it doesn't have any cold start issues. If it doesn't idle well right off the bat, make sure THEY fix it. Maybe try to get there in the a.m., as I imagine Fresno is already starting to heat up. Frequently an easy fix, but sometimes very difficult to diagnose.

    The rims are notoriously soft (at least when ridden aggressively), so check to make sure they are are true.
  17. 4Rider

    4Rider Dedicated Lurker

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    Apr 19, 2005
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    Bottom Left Corner far from Maine
  18. Tracks1

    Tracks1 Arctic Rider

    Joined:
    Jul 28, 2012
    Oddometer:
    95
    Location:
    USA West Coast
    Have a look at the thread for the X-Co: http://www.advrider.com/forums/showthread.php?t=290240
  19. tommyvdv

    tommyvdv Been here awhile

    Joined:
    Mar 18, 2011
    Oddometer:
    430
    Location:
    Belgium
    Hi
    I've been thinkingÂ…
    How about using this bike to commute as well as take long trips?

    I'm on a 1200gs, but i'm looking to downsize. If the thing cruises decently (and without ripping the internals to bits) and takes the usual street bike intervals, this looks a splendid/versatile bike :clap

    The engine looks like the rotax in our f650gs single. But looks can be deceiving?

    So the main question is, will it take all year riding; road-tripping and freeway without leaving me stranded or running up a high maintenance bill?

    Thanks for the advice.
    T
  20. macadamia

    macadamia XK Red 27 Technique

    Joined:
    Dec 5, 2010
    Oddometer:
    1,390
    Location:
    Idaho Falls, ID
    yes, you can do all of those things... I rode my X Ch from Southern California to Chicago and back last summer... I also used it as my commuter bike until I bought my GSA. I am a large rider (300 lbs+, without my gear) and had to have my seat redone to make it tolerable for longer distances...

    The engine is a Rotax single, but I'm not sure if it is the same as the F650GS... someone on here will be able to answer that...

    Also, there is a rider on here who has ridden around the world on his X Ch - Colebatch is his screen name - and he has a very lengthy thread about how capable this bike is... Here are some of his threads...

    http://advrider.com/forums/showthread.php?t=524638

    http://advrider.com/forums/showthread.php?t=463661

    http://advrider.com/forums/showthread.php?t=834987