BMW G650X Challenge Thread Index

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

  1. AZ-Twin

    AZ-Twin Dusty and Thirsty

    Joined:
    Oct 20, 2007
    Oddometer:
    1,326
    Location:
    Sierra Vista, AZ
    Yep, I just verified it, my 26mm ring spanner fits nicely on both the front and rear axle nuts. I believe some folks buy a KTM nut which is the same thread, but uses a 27mm tool. I think you can get a cool 27mm wrench that is also a tire lever, but I am not sure if I am remembering that correctly.

    And all should note that my previous post remains unedited.:lol3:lol3:lol3
  2. AZ-Twin

    AZ-Twin Dusty and Thirsty

    Joined:
    Oct 20, 2007
    Oddometer:
    1,326
    Location:
    Sierra Vista, AZ
  3. Royal Tiger

    Royal Tiger Sd Kfz 182

    Joined:
    Sep 21, 2006
    Oddometer:
    1,887
    Location:
    Lehigh Valley, PA
    Thanks!

    I'll have to go look for the KTM nut. Any model info? There is a KTM dealer not that far away.
  4. tbarstow

    tbarstow Two-wheelin' Fool

    Joined:
    Jul 9, 2007
    Oddometer:
    3,583
    Location:
    Viva Lost Wages!
    Any year KTM 450.

    Take your front axel with you to ensure proper fit.
  5. Ruis_Rider

    Ruis_Rider Adventurer

    Joined:
    Dec 17, 2010
    Oddometer:
    59
    Location:
    Columbia, MD
    My friends '00 or '01 (not sure...) KTM 640 LC4 has the 27mm nuts that works for the Xch. These nuts have a flange on them and the OD of this flange causes the rear axle nut to not sit against the same surface that the stock 26mm nut does. Because of this, I (as others have done) turned this flange down on a lathe for it to sit properly. I do not think this is necessary, but I didn't like it otherwise. It takes all of 2 minutes, provided you have access to a lathe!

    The front 27mm nut sits fine as-is but I turned both front are rear nuts the same just so I never would need to keep them axle-specific.

    Best part about this mod is also having the cool tire iron / wrench. :D
  6. Ruis_Rider

    Ruis_Rider Adventurer

    Joined:
    Dec 17, 2010
    Oddometer:
    59
    Location:
    Columbia, MD
    Pete & Caf,
    Sorry I have no contacts for you but you may be able to get it repaired at a typical auto shop if it is just a O-ring problem (leaking from the body). More likely it is a rod seal and you will probably have to get a special part from HyperPro. A hydraulic rod seal of equivalent diameter may work in a pinch if you can find one, but there are about 1000 different designs out there! You could use an O-ring as a rod seal, but it will leak and it won't last long.

    I'm a shock guy but have NO experience with HyperPro, so sorry I can't be more informative. Depending on the severity of the problem, you can probably ride it conservatively until you get a replacement seal, but by that point the bearing may be shot with ingesting dust.

    I see on their website that this is probably an emulsion shock, so at least you won't have to locate the floating piston precisely when reassembling...meaning it's not that difficult to do...just don't put too much oil in. Hopefully, the manufacturer can help you out!

    Good luck!
    Ruis
  7. rockydog

    rockydog just a guy

    Joined:
    Feb 11, 2007
    Oddometer:
    909
    Location:
    okieland
  8. Royal Tiger

    Royal Tiger Sd Kfz 182

    Joined:
    Sep 21, 2006
    Oddometer:
    1,887
    Location:
    Lehigh Valley, PA
    Thanks T!


    Cool. Thanks R_R. :freaky
  9. The Jester

    The Jester Been here awhile

    Joined:
    Aug 26, 2005
    Oddometer:
    881
    Location:
    Recently arrived in Cyprus
    You could contact Tony Archer in the UK. He has reworked a lot of Xch seats for UK riders. He can do different spec seats but typical cost is under £100 plus postage.
  10. Perun

    Perun Been here awhile

    Joined:
    Mar 3, 2011
    Oddometer:
    231
    Location:
    Belgrade, Serbia
    I have very good upholster here, just I am not sure what to tell him, how to redisign the seat.

    We have allready remodeled a seat, to be wider at the back and still narrow at the front, like Archers, Renaczo or RayZ seats I have seen on the net. But I am not happy, I dont like it. To much difference in width between back and front of the seat, and it boders me when I move back-front while riding. Also, when my but hops in a narrow place in the front (when riding supermoto style through twisties) I need to lift my but when I want to go back. The front is as narrow as stock, maybe I need to wide it a bit there.

    Anyway, I thought to try a Kahedo seat, to see how it is, but I didnt find any comments about it on the net. Friend has it on KTM690R and i like it, but thats not same bike...

    I hope my english amuses you. :)

    And thanks for suggestion.
  11. Meriden

    Meriden Yea whatever

    Joined:
    Oct 26, 2010
    Oddometer:
    744
    Location:
    Crossing a required field
    Was involved in a merger once and gained a new boss that was a real jerk. He started giving me trouble about one of my foreign born employees whose English was not very good. I asked him in Spanish how many languages he spoke. Of course all I received was an angry face as an answer. Anybody that gives you trouble about your English or spelling on any forum isn't worth worrying about. :ricky

    m
  12. Butters

    Butters Kwyjibo

    Joined:
    Oct 10, 2008
    Oddometer:
    2,796
    Location:
    NoVA
  13. tbarstow

    tbarstow Two-wheelin' Fool

    Joined:
    Jul 9, 2007
    Oddometer:
    3,583
    Location:
    Viva Lost Wages!
    As we all need just a bit more gas on our G650X bikes, I had been using the 1.3 gallon Acerbis fuel cell. It worked great and gave me a 200 mile range. But, it did make mounting my Wolfman bags goofy, so I need another solution.

    So I saw that Butters hooked up the 1.1 gallon KTM side panel tank on his XCountry, so I decided to try it as well.

    Here's the set up to heat and expand the tank with boiling water.
    [​IMG]

    Here it is in action:
    [​IMG]

    [​IMG]

    During the expansion, I kept mine hooked up to the air compressor and had the output pressure set at 25psi. The extra Acerbis gas cap I had laying around didn't quite seal, but this actually helped, as I could keep the air flowing into the tank and keep it at the size I wanted. I also applied some heat with a heat gun to the lower right hand portion of the tank so that it would bulge out further and remove the relief that is molded into the tank for the KTM sprocket.

    After the heating and expansion was done:
    [​IMG]

    [​IMG]

    The mounting using the stainless loops from McMaster-Carr was a bit flimsy, so I added a .25" thick aluminum plate and a few more stainless loops.

    [​IMG]

    All done and ready for Baja in less than 2 weeks!

    [​IMG]

    UPDATED 12/11/12: The first fill at the gas station was 1.3 gallons, the same as when I had the 1.3 gallon Acerbis fuel cell mounted on the side. At this point you're looking at the better part of a 180 mile range.
  14. pampaX

    pampaX Been here awhile

    Joined:
    Aug 3, 2007
    Oddometer:
    434
    Really nice!

    Do you know who sells those thanks? I have searched the web but can only find the front one only
  15. Butters

    Butters Kwyjibo

    Joined:
    Oct 10, 2008
    Oddometer:
    2,796
    Location:
    NoVA
    You can get them from justgastanks.com, it's a Baja Designs tank for a KTM: http://justgastanks.com/product_info.php?manufacturers_id=12&products_id=2830

    Tim, it looks like you got a bit more volume out of your tank than I did. I wouldn't be surprised if you got a full 1.5 gallons additional. I'm told you can expand tanks over and over, so I am contemplating having another go at it. I still haven't polished off my first tank since I'm re-doing my mounting bracket, but it does appear that it will completely drain the auxiliary tank, making use of all the gas.

    Although I tried to avoid it, I am also going to have to use my rack for mounting points. But with my HB racks, there is a plate that prevents me from mounting it as far back as you did. It looks like yours definitely clears your chain (not to mention it shouldn't drop that low.). I'm not sure if my new mount will totally clear my chainguard, but I think any contact isn't going to be an issue. I got more 1/4" stock yesterday from MMC, so I'm hoping I might get mine fabbed up today.

    One question, do you have any concerns about not having a chainguard? I've debated taking mine off, but was a bit concerned about possible damage if I break a chain.
  16. snooker

    snooker AttitudeIsEverything

    Joined:
    Feb 19, 2010
    Oddometer:
    1,628
    Location:
    Loveland, Colorado
    Here's some more help with the KTM rear axle nuts, part no. 50310099000 with pics including this one showing how the rear cap nut is turned down just a bit smaller.
    But the real nugget on that link is the Scheffelmeir stainless steel wheel spacers :evil

    [​IMG]
  17. tbarstow

    tbarstow Two-wheelin' Fool

    Joined:
    Jul 9, 2007
    Oddometer:
    3,583
    Location:
    Viva Lost Wages!

    You can heat and form the plastic many times. I actually repeated the heating cycle twice, the second time is the photos with the aluminum plates clamped around the tank.

    No, I'm not worried about not having a chain guard on my bike. If you break your chain, it's probably going through your engine case.
  18. Don't shoot me!!!

    Don't shoot me!!! Snowflakes are cold...

    Joined:
    May 5, 2006
    Oddometer:
    569
    Location:
    Norway
    I have the Kahedo seat "High" version (3 Cm higher)
    Iv'e found it to be very comfy, even when it's not a customized seat for my weight etc.
    It's buildt in the same shape as the OEM, and a vital thing for me, it's not TO soft :D
    Overall i found it worth every penny, and i WILL be a returning customer to Mr Dorn on my next project.

    [​IMG]
    [​IMG]
    [​IMG]


    And, as i'm forced to sell my X, everythings for sale :cry
    Keep in mind that the bike is allso up for sale, so i can't sell engine, wheels, frame etc...
    PM me for parts....
  19. TobyG

    TobyG be happy :)

    Joined:
    Dec 27, 2011
    Oddometer:
    625
    Location:
    Nemčija

    FYI: Link isn't working (well...actually there is no URL behind the selectable text)
  20. Butters

    Butters Kwyjibo

    Joined:
    Oct 10, 2008
    Oddometer:
    2,796
    Location:
    NoVA
    The KTM tank, version2. My initial attempt had the tank hitting the chainguard at full compression. Unlike TBarstow's, mine is still in line with the chain since I can't mount the tank canted outward due to the tight fit of the rack. (Edit: no clearance issues with the chainguard).

    Here's how I mounted the KTM tank behind my Hepco Becker racks:
    [​IMG]

    The top bracket is a flat piece of stock and a 1" spacer. It bolts to the bracket that came with the KTM tank and uses the bolts (longer) that hold the side racks to the tailrack:
    [​IMG]
    The bottom bracket uses the two bolts that previously held the canister to the subframe. It bolts directly to the bracket that comes with the KTM tank:
    [​IMG]
    Here's is the additional material on the HB racks that prevents the bottom of the tank to be moved outward. There is plenty of material that could be removed, but I am trying to avoid that. Also, it may not be clear from the pics, but that thing is wedged in very tight between the rack and the rear fender.
    [​IMG]
    Here is a pic from the rear showing the alignment of the tank and the chainguard:
    [​IMG]

    I will edit this post once I verify the tank won't contact the chainguard and can post the total range I got from it.

    Edit #1: No issues with the chainguard. In fact, it doesn't even contact it. Now to figure out the range . . .

    Edit #2: The low fuel light came on at 167 miles, but I only averaged 52mpg for that tankful. So I'm thinking 175 to reserve will be pretty typical. It also looks like my odometer is only off 3-4% (whereas the speedo is off about 8%). I think an actual 200 miles is possible as is. In fact, I think it is likely, but those last 5 or 10 miles would have me a little nervous.