KTM 640 Adventure owners, sign in please...

Discussion in 'Thumpers' started by creeper, Feb 20, 2004.

  1. singletrak

    singletrak Adventurer

    Joined:
    Oct 27, 2003
    Oddometer:
    73
    Location:
    Minneapolis,MN
    All right... another question from a new owner. When I changed out the rear tire I noticed NO rim locks, so I assume we just run without them? What pressure are you running for 90% off road/dirt? Can't go too low or you spin the tire and rip out the valve stem.. thoughts?

    Singletrak
  2. Emmbeedee

    Emmbeedee Procrastinators

    Joined:
    Mar 19, 2008
    Oddometer:
    10,120
    Location:
    Near Ottawa, ON, Canada
    For 90% off road, you're going to be airing down. I suggest you drill for at least one rim lock.
  3. bmwktmbill

    bmwktmbill Traveler

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    That depends on weight in part and surface. Unloaded with the Adventure/ but full with 7 gallons of gas, low twenties in the rear. A little more in the front to protect the rim.

    I carry and electric pump when traveling to air up as needed. I have run those low pressures on the road but go a little slower.

    Best is to experiment on your own, dropping the pressure until it feels right to you. I have a Scotts steering stabilizer so I am cheating.

    Rim locks are a PIA, I have never spun a tire but I clean my rims every time, remove the rim strap and oil the nipples, then wie everything clean. Wire brush the rim itself.
    After the tire is mounted I tighten the spokes just a little all the way around torquing by feel with this...

    http://www.motionpro.com/motorcycle/partno/08-0157/

    Been using WD 40 to mount, unmount the tires.

    bill
  4. skibum69

    skibum69 slave to gravity

    Joined:
    May 14, 2006
    Oddometer:
    5,625
    Location:
    New Melbourne, Newfoundland
    I never air down, I just run. I've also run plenty of road time on low pressure and it hasn't been a problem. I did try a set of my old mousses once but they were way too soft. I say giv 'er!:D
  5. bmwktmbill

    bmwktmbill Traveler

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    Skibum,
    My riding partners who are still fast and over 60, like myself, all air down.

    One guy rode with Ekins and McQueen in the desert, the other road raced and MX'd back in the days of shit suspension, I'm an old enduro racer and MXer. Well maybe we are just too old?

    In gravel and in the slick snot unless you are superman or like riding on marbles all day, I'd air down.

    I have 5 broken collarbones from highsides and a broken foot.
    Traveling outside the first world, the worst injuries to mc and men were the result of crashes on gravel at 50-60 mph.

    Air down bro.

    Cracked ribs are a bitch(too).
    You just can't laugh at yourself.


    Old bill

    edit:
    Forgot the broken pelvis in Bolivia,bought the KTM when I got home.
    It's the most forgiving motorcycle I ever rode.
    b
  6. skibum69

    skibum69 slave to gravity

    Joined:
    May 14, 2006
    Oddometer:
    5,625
    Location:
    New Melbourne, Newfoundland
    Thanks for the tips. I was out offroad half the day today running about 28 psi, everything felt fine to me? We weren't running too hard either.

    In Mongolia I definitely did run lower psi for the 8 day rally, but it didn't make up for rider error:lol3
  7. skibum69

    skibum69 slave to gravity

    Joined:
    May 14, 2006
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    5,625
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    Thanks for the tips. I was out offroad half the day today running about 28 psi, everything felt fine to me? We weren't running too hard either.

    In Mongolia I definitely did run lower psi for the 8 day rally, but it didn't make up for rider error:lol3
  8. 2 SPOT

    2 SPOT wannabe

    Joined:
    Dec 14, 2005
    Oddometer:
    3,505
    Location:
    valley of the sunstroke, AZ
    when i plan to be in the dirt alot, i get down to at least 22,,, ive run as low as 18, but thats all i want to try. airing down makes a huge difference.
  9. bmwktmbill

    bmwktmbill Traveler

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    Running sand and gravel, ATV trails in northern Wisconsin yesterday.

    Front 22psi, rear left at 28-30.

    On the gravel at 26-marbles, 22-planted.

    Kenda 570, 3.25x21 front and 5.10X18 rear

    http://www.kendatire.com/en/motorcycle/dual-sport/k270-dual-sport/

    Scotts ss medium setting.

    b
  10. laramie LC4

    laramie LC4 crash test dummy!

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    Thanks to those of you who have already posted a vote. I'm in the lead with 1 day to go. If you haven't had a chance yet I'd sure appreciate it.

    Thanks,

    Laramie :beer
  11. Baja Dad

    Baja Dad Long timer

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    Oddometer:
    2,052
    Location:
    Norco California
    off road
    15 psi in the front
    18 psi in the rear
    Dunlop 908

    Long rides on Tar--- 20 psi front and back
  12. bmwktmbill

    bmwktmbill Traveler

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    Yep, good ones.

    I've dropped much lower than that with rimlocks and sub 300 lb two strokes.

    I remember 12-14 front, 8 rear.
    Metzlers knobbies, back in the day.
    b
  13. bigboyxl

    bigboyxl Been here awhile

    Joined:
    May 24, 2011
    Oddometer:
    360
    Location:
    Czech republic - Ukraine
    Ok so here I am at Nordkapp paying the admission fee and saying thanks to the guy at the cash desk, turning the key, ignition on, starting the bike and hearing only annoying clicks (similar to ones when you have a flat battery).
    Smiling when doing few kicks with kick starter and telling the guy at the cash desk that it's the northernmost point of Europe where I could breakdown :D
    So here is the thing: all fuses are ok; battery was changed before the trip; used couple of times heated grips and charged a bit an ipad mini just when it happened; both plus and minus connectors doesn't seem loose (been there - done that)...
    I'm in the middle of the trip, next is Russia and then Finland...
    Any ideas, gurus?;)
  14. liferider

    liferider Never It's enough

    Joined:
    Nov 27, 2007
    Oddometer:
    648
    Location:
    Patagonia
    I'm no expert, but:
    - assuming the heated grips are off for sure when the bike is off, is there anything else connected that can be consuming the batt while not riding?
    - does the batt recover when you ride for a while? I would check this without connecting anything to the bike, in order to clear the way to the origin of the problem.
    - most of all, assuming the batt is ok (new) can be not charging while riding; do you have access to a place where you can get the bike's batt charging capacity meassured?

    Keep us posted!

    .
  15. Dolly Sod

    Dolly Sod Red Clay Halo

    Joined:
    Aug 18, 2003
    Oddometer:
    14,073
    Location:
    Richmond, Va
    What is the battery voltage while the engine is running?

    My voltage regulator died recently, but would charge the battery normally for 15 or 20 minutes before giving up the ghost. It would not fail strait away though. After riding a bit voltage would start dropping. Over about 10 minute time it would go from 13.5 to 12.5. Then it might jump back to 13.5 and start dropping again. Lowest I saw was about 12volts.

    Also, just because the battery is new, doesn't mean it couldn't have failed.
  16. bigboyxl

    bigboyxl Been here awhile

    Joined:
    May 24, 2011
    Oddometer:
    360
    Location:
    Czech republic - Ukraine
    Thanks for immediate reply liferider!
    Heated grips were routed to work only when the bike's ignition is on.
    Haven't tried riding yet, but definitely will :)) next fuel stop will be in 30km I will see how it works then.
    No other stuff is juiced from battery.
    Probably I could ask guys in Russia to check with voltmeter, if the alternator is working...
    I think the battery is fine, it's brand new sealed Yuasa. Also when I try to turn lights they don't seam to dim like on flat battery...
    Btw, if I was on this trip with new 1190A I could end up in pretty funny situation (I mean not having kickstarter) :D


    Sent from my iPhone using Tapatalk
  17. Dolly Sod

    Dolly Sod Red Clay Halo

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    Location:
    Richmond, Va
    If the lights aren't dim and voltage checks out, probably a bad starter relay.
  18. liferider

    liferider Never It's enough

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    Patagonia
    If you were on your 1190A, now you would be at a hotel calling a helicopter to take you and the fat beast home... :lol3:lol3

    You are very lucky for keeping your mighty 640A... it's a champ for far and forgotten lands trips... :wink:

    Given it's a Yuasa, the new batt should not be the problem.

    .
  19. laramie LC4

    laramie LC4 crash test dummy!

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    you need someway to test the load on the battery. you need to see if 1) it is being charged, 2) that it's holding the charge. just because its new doesn't mean that it can fail. it could easily drop a cell and the bike would run fine once started but would not start again once shut off. if the reg/rect is good you shoul dbe getting up to 14V at the battery when on the gas, if not your reg/rec needs attention. i suppose it's also possible the stator could be going but i would put it last on the list of possibilities.

    good luck. let me know if i can help with anything else.

    laramie :beer
  20. Kawidad

    Kawidad Long timer

    Joined:
    Jul 9, 2005
    Oddometer:
    5,111
    Location:
    Central Coast, Cal
    bigboyxl: what the other said, and I will add to check the ground lead and the positive lead to the starter motor. They sometimes vibrate loose and cause your symptoms. They don't call them paint shakers for nothing. Another possibility not mentioned is the ignition switch. People have documented cases where they break a connection inside of the switch, presumably also due to the vibration. :deal