NX250 Thread -- official ADV owners manual

Discussion in 'Thumpers' started by valvecrusher, Mar 17, 2008.

  1. fiep

    fiep Long timer

    Joined:
    Mar 9, 2005
    Oddometer:
    1,909
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    GA
    it does not get ridden at all
    as long as I am in the process to get the frigging gastank to quit leaking
    right now that thing is taking a soda bath with an anode and 12v up it's ...

    no, please not
    I plan on as close to stock XR-L looks as possible

    or something really wild
  2. fiep

    fiep Long timer

    Joined:
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    Oddometer:
    1,909
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    did post the link to more pictures
    http://www.xr-forum.de/index.php/topic,20208.0.html

    if you want details, ask
    the big stuff was pretty easy,
    the little things drive me up the wall now

    as soon as the tank ...
    I'll ride and tell
    the first couple of days commuting were uneventful

    suspension has been 'tuned' but our local wizzard went a little overboard with his sumo-setuo, feels like I need to gain 100lb
    this makes the bike very hmm flickable? nervous!

    side by side with my XR650R the poor thing feels like NO giddy-up at all
    we shall see, once the tank ... in the mountains


    why
    don't I have the right to be pissed
    when someone barks at me publicly and when I send a friendly pm never gets back to explain what or why?
  3. heliyardsale

    heliyardsale Always looking for Dirt!

    Joined:
    Feb 25, 2009
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    Location:
    CNY.. Home of too many Liberials, yuck!
    Nice thread! Great info! I just joined the club today. This little gem came home with me tonight! 5500 miles, runs great and nice plastic.... I just scored a GSXR 750 shock off eBay to get things started...

    [​IMG]

    [​IMG]
  4. RollingJ

    RollingJ The mud in your eye

    Joined:
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    Oddometer:
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    Bastrop, tx
    Nice ride!

    Change your chain before it starts eating sprockets like this:

    [​IMG]
  5. TheRadBaron

    TheRadBaron Been here awhile

    Joined:
    Jul 26, 2010
    Oddometer:
    481
    Location:
    Central Illinois
    Hey guys. It's been a while since I've posted or even been here. My lasts posts were as I was finishing up my 21" front/17" rear wheel swaps with Kenda on/off road tires (244s maybe?). Well, not long ago I took the NX for its first real offroad trial. I have a buddy who lives off the grid DEEP in the woods of southern Illinois. We normally keep in pretty regular contact through cell phones. At this point I hadn't heard from him in a few weeks and his phone seemed to be out of service. I was a bit concerned so I figured I'd go on down and look for him. This trip would also be a good test of my new Harbor Freight trailer that I modified to tow behind my 5-spd Honda Civic. I have an '82 3/4-ton diesel 4x4 granny-gear stickshift Chevy that would be better suited for the task, but I'd like to be able to tow a bike and still get 30+ mpg. Here's me and the dog prior to departing:
    [​IMG]
    The trail to get up to my buddy's cabin is about 3 miles of nasty, muddy, rutted, rocky death. It takes a hard core 4x4 truck to get up and down it and even then only when conditions are very good. The rest of the time it takes a good 4-wheeler ATV or dirt bike. I didn't know if I would find my friend or not, so I loaded up enough provisions for the dog and I to make an overnight of it.
    [​IMG]
    The NX tractored up the hill like a champ. The trail was a muddy mess due to a lot of recent spring rains, but the bike plowed right through everything. It was hard work for me and the bike, but we got to the top of the hill without any major problems. I found my buddy at his cabin. His phone had been ruined during some gnarly, flooded creek adventure, but all was well. We had a good evening eating squirrels and telling stories of our heroics.
    [​IMG]
    The next morning we headed back down the hill. My buddy rode the NX and I followed him on his ATV. He hadn't ridden a dirt bike in a while so he stalled it a few times and after a while the battery got low enough that it wouldn't crank over. We had to resort to push-starting it every time it stalled. Why oh why did they not put a kick starter on this bike? That's my only real complaint with the NX250, but it's a big complaint. It really makes me a lot less confident to venture far away from civilization on the NX.

    My impressions of my modified NX250 are thus:
    PROS:
    -The 21/17 wheel combo really works well off road
    -In spite of the spindly frame, it handled the rough stuff and aggressive riding without issue
    -The cooling fan ran whenever the going got slow, but the overtemp light never came on
    -The Kendas provided acceptable traction in the mud while still be acceptable on the street

    CONS:
    -NO KICK STARTER! At least it's easy to push start and still runs fine once you get it pushed
    -I have the stock gearing and it could use a few more teeth in the rear sprocket for offroad work
    -Either I have a charging system problem or the electrical system can't handle running the electric fan constantly and starting the bike often

    The HF trailer worked great, too. The Civic towed it without problem at interstate speeds and still got about 32mpg. I don't think that I'd pull the trailer and run the AC at the same time, though.

    Here's my main question: Does the NX250 need the battery to run? I know that it needs it for the starter, lights, etc., but is the CDI system a battery ignition or flywheel magneto type like you find on a lot of dirt bikes? When my battery was too low to crank the engine, the bike still ran great when push started. I know my buddy's Honda 230 4-wheeler has a battery and electric starter, but it also has a kick lever and can run with no battery installed.
  6. RollingJ

    RollingJ The mud in your eye

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    Bastrop, tx
    I run a 13/43 sprocket combo with the 17" rear. It's just about perfect.
  7. az2002

    az2002 -

    Joined:
    May 15, 2011
    Oddometer:
    28
    Location:
    zhukovskiy
    Hi
    Anyone knows max payload ax-1? Rear suspension is very hard, when 2 up and offroad.
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
  8. Mununa

    Mununa n00b

    Joined:
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    Oddometer:
    1
    Location:
    Oradea, Romania
    <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:punctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]--> Hi everyone!

    I’m Carmen and I’m new here.
    I’m happy I’ve found this community, though most of you are so very far away from where I live. :(:

    Need some help…
    I have two NX 250 bikes, one is a 1993 model, 17 kW, the other one is a 1991 model, but only 13 kW. The older bike is in a perfect shape and I want to keep it, and sell the other one. I just would like to have more power in it. Therefore I thought I might change some parts.
    Could anyone tell me what makes the HP difference in these bikes? What parts should I take from the more powerful bike and put on the other to increase power?

    [FONT=&quot]Thanks a lot![/FONT]
  9. larry31

    larry31 Back Roads Explorer

    Joined:
    Mar 24, 2011
    Oddometer:
    341
    Location:
    New Hampshire
    TheRadBaron

    Your Question: Here's my main question: Does the NX250 need the battery to run? I know that it needs it for the starter, lights, etc., but is the CDI system a battery ignition or flywheel magneto type like you find on a lot of dirt bikes? When my battery was too low to crank the engine, the bike still ran great when push started. I know my buddy's Honda 230 4-wheeler has a battery and electric starter, but it also has a kick lever and can run with no battery installed.

    I don't think there is a magneto in the NX.
    I would think that the CDI would need at least some small voltage to operate. Most batteries have close to 12 volts even when run down, as long as no major load is required.
    The problem comes when you try to put a heavy load on the battery by running the starter motor. It will pull the voltage down below normal voltage.
    My Honda Gold Wing needs over 10 volts to fire properly. I would imagine the NX's CDI has some minimum voltage it requires to work.

    When you over use the starter and run down the batery,The battery still has close to 12 volts when not trying to run the starter. That is probably enough to allow the CDI to fire, when you jump start the bike.
    A CDI module dosen't requite much current draw. A few milliamps!

    You can test this out by removing the battery and try to jump start the bike. I'll bet it won't start!

    Your NX's generating system was probably operating good and putting out enough volts to run the bike after it was jump started.

    PS: I have put my NX through some rough places. I don't normally like to run through mud. I avoid mud like the plague! Rocks, sand, gravel is no problem. I just don't like mud. Oh Well! to each his own!

    The NX is a great bike and They'l have to pry mine out of my cold, dead hands.
  10. IheartmyNx

    IheartmyNx Ihave2draft

    Joined:
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    3,859
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    Nashville TN, no chit, police state.
    X2. When I 1st got my bike it had this gearing. I found 1st to be useless, but I do 100% on-road driving.

    It still had a top speed well over 80 IIRC.

    Not bad for a small street legal dirtbike. It feels as nimble as a BMX under me and can get me a speeding ticket on any road any time I want it to.:D

    I believe what you're feeling is the dead shock bottoming out. As far as I know all NX/AX's ad the same shock that were both air charged and non-rebuildable.


    Jeez, what was all that text in your post?

    As to your problem, wasnt there a 23? cc NX or AX for the French market?

    I wonder if you've got one of those and not a proper 250cc of displacement?

    There was something about them being smaller or having more emissions junk on them I can't recall now.
  11. IheartmyNx

    IheartmyNx Ihave2draft

    Joined:
    Apr 10, 2009
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    3,859
    Location:
    Nashville TN, no chit, police state.

    Yeah, I feel ya on that one. Weird thing is, EBay shows a listing for a NX250 kick starter:lol3


    As for running, as far as I know no, you don't need a batt.

    One thing you can do is run a capacitor. But it will be push-start from then on... unless you can find a lower case and kicker that works with the NX...

    It's called a battery eliminator.

    http://www.summitracing.com/parts/ALM-151308/
  12. RollingJ

    RollingJ The mud in your eye

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    Bastrop, tx
  13. valvecrusher

    valvecrusher tractus pro pensio™

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  14. thirstybuck

    thirstybuck Adventurer

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    Jun 14, 2011
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    USA
  15. anotherGSrider

    anotherGSrider Adventurer

    Joined:
    Jun 2, 2007
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    54
    Location:
    Denver, CO
    thoughts?
    ----------------------------------

    Up for sale is a great water-cooled 250cc bike for the dirt and street. Runs great. Electric start. Title in hand. Decent condition for it's age; just a couple of plastic issues.
    Very peppy, and great gas mileage. 6400 on the odometer. Have some summer fun on the cheap.
    $1500
    <table summary="craigslist hosted images"><tbody><tr><td align="center">[​IMG]</td> <td align="center">[​IMG]</td></tr></tbody></table>
  16. ArthDuro

    ArthDuro quarantined

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    In the arthduro garage today
    [​IMG]
  17. mattoehler

    mattoehler Largecookie

    Joined:
    Mar 26, 2010
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    10
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    Big Sky, Montana
    Hey,

    Just wanted to let everyone know I'm trying the mighty NX against many other larger, uglier, less nimble foes at the end of the month in a 32 hour Iron Butt Association rally! The website is www.bigskyrally.com I am PUMPED!!! :evil Fortunately for me my uncle is quite the seasoned veteran when it comes to long distance rallies and I'm talking with him to come up with a game plan. I figure it's a fantastic way to see a thousand plus miles of beautiful Montana, North eastern wyoming and eastern idaho. Last weekend I took my NX down to Yellowstone National Park and averaged 95 miles to the gallon so I'm hoping that'll keep up at least for the rally.
  18. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    The rear shocks are re-buildable. I have done mine twice. You are probably correct about those people feeling the shock bottom out. No way is it too hard 2-up off-road.
  19. fiep

    fiep Long timer

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    our definition for 'off road' must differ a lot
  20. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

    Joined:
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    I see Drunk People.
    So,

    One day after I bought my AX I ran a series of three sharp road humps at 140km/ph and, when I parked, noticed oil pissing from the bike. Happily, the oil was from the rear shock and not the engine.

    I took it to a local shop who stripped the shock and lightly skimmed the slightly rusted shock piston in a lathe, made new seals and put in new oil and nitrogen.

    It worked well for six months until it began getting soft again - so I had it done again and this time it was a better job. Probably as good as new - but I still reckon the SV shock swap to be better - as the re-build was $55 a time and not longlasting.