RE: XTM 1/7 XLB  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
More Resources on the
XLB 1/7 Nitro
  • 2 Active Classified Ad(s)
  • Read Full Review
  • See User Ratings
  • Suggest Compatible Equip.
  • Check for Retailers
  • Discussions on this Product


    • All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC 1/8th Scale Buggies >> RE: XTM 1/7 XLB
    Page: <<   < prev  1 2 3 4 5 [6]

    Login
    Message << Older Topic   Newer Topic >>
    RE: XTM 1/7 XLB - 6/24/2008 5:13:00 AM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline     		No. I put on a regular pull starter. Will leaning out the high speed needle help?

    (in reply to IloveMYxt2)
           Post #: 126

    RE: XTM 1/7 XLB - 6/24/2008 10:41:48 AM   
    Mr Terminator



    Posts: 418
    Joined: 11/14/2007
    From: Manchester, UNITED KINGDOM
    Status: offline     		Check your glow plug and make sure the glow starter is fully charged.Once thats checked and assuming all is well,prime the engine by removing the pressure line from the exhaust and blow down the pressure tube until you see the fuel enter the carb,an extra second after it hits the carb will suffice.Attach the pressure line back on the exhaust and then try to start it,if its tight then loosen the glow plug a 1/4 turn to lower the compression,if its still taught it may be flooded and you'll have to remove the glow plug,tip the buggy upside down and give a good few pulls on the pullstart to empty any excess fuel.If it's pulling freely then try to start it,if it doesn't then start to lean the HSN in 1/8 increments until it starts but dont overlean it.If all fails then revert back to factory settings and try again.....

    _____________________________

    HPI Baja SS/Genesis LE/MG16MT/VRX-2 Pro/HB Lightning GTX2/NB16T/Micro T.

    (in reply to hchou)
           Post #: 127

    RE: XTM 1/7 XLB - 6/24/2008 4:35:24 PM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline     		Thx. Will try your recommendations.

    (in reply to Mr Terminator)
           Post #: 128

    RE: XTM 1/7 XLB - 6/27/2008 6:01:40 AM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline     		Ok. Got the thing to start up again. Drove around slowly for about 3 minutes and then turned it off. Took the car to my neighborhood baseball park and brought along my 2 year old because he was getting a kick out of it. Drove it around for 2 - 3 minutes and then shut it off to cool down. Checked my son's diaper and noticed a full load...and of course I didn't bring any spares. So headed back home.

    So my question is: I've tried to break in the engine twice now (today and last week) and have not had a chance to follow the instructions in terms of driving for 2-3 minutes, cool down for 10 minutes, drive around for 2-3 minutes, cool down...repeat for about 45 minutes. I'm going to make time this weekend so should continue from where I left off or should I start over the break-in process?

    (in reply to hchou)
           Post #: 129

    RE: XTM 1/7 XLB - 6/27/2008 7:42:16 AM   
    Mr Terminator



    Posts: 418
    Joined: 11/14/2007
    From: Manchester, UNITED KINGDOM
    Status: offline     		Just carry on from where you left off,it'll be fine....

    _____________________________

    HPI Baja SS/Genesis LE/MG16MT/VRX-2 Pro/HB Lightning GTX2/NB16T/Micro T.

    (in reply to hchou)
           Post #: 130

    RE: XTM 1/7 XLB - 7/4/2008 11:20:05 PM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline     		Was almost done with the break in process and ran into a new problem. I would run the buggy around for about 3 minutes, let it cool down for 10 minutes, leaned out the high speed needle 1/8 of a turn, ran it for about 3 minutes, repeated. As I was on my last break in "session," the buggy started having a really difficult time running. I would try to do a short burst of throttle and the engine would cut off. Started it up again and was driving around mid throttle. When I would try to go past mid throttle, the engine would cut off. Is this a sign of running too lean? Or should I make some other adjustment? I thought I followed all the steps in the manual but am I missing something?

    (in reply to Mr Terminator)
           Post #: 131

    RE: XTM 1/7 XLB - 7/5/2008 12:38:27 AM   
    IloveMYxt2



    Posts: 225
    Joined: 5/21/2008
    From: Turlock, CA, USA
    Status: offline     		If its too lean, it will die when you give it full throttle, but usually once it has reached high speeds, unless its really lean. What are the temps? Another way to check if its lean is pinch the fuel line going to the carb (pinch it real tight) and see how long it stays running. If it dies right away then its too lean. If it dies 2-3 seconds after the pinch its good, and if it dies after 3-4 seconds, its too rich.

    _____________________________

    XT2 (not stock)

    (in reply to hchou)
           Post #: 132

    RE: XTM 1/7 XLB - 7/5/2008 1:39:32 AM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline
    quote:

    ORIGINAL: IloveMYxt2

    If its too lean, it will die when you give it full throttle, but usually once it has reached high speeds, unless its really lean. What are the temps? Another way to check if its lean is pinch the fuel line going to the carb (pinch it real tight) and see how long it stays running. If it dies right away then its too lean. If it dies 2-3 seconds after the pinch its good, and if it dies after 3-4 seconds, its too rich.


    Sounds like it's too lean when you mentioned the full throttle thing. I was out in a baseball park and it was building up speed when it died. The highest temp I measured was under 220. I think 216 or 218. I'll get it started tomorrow and richen the carbs. I'll also do the test you mentioned pinching the fuel line. I didn't know about timing it.

    (in reply to IloveMYxt2)
           Post #: 133

    RE: XTM 1/7 XLB - 7/5/2008 7:46:56 AM   
    IloveMYxt2



    Posts: 225
    Joined: 5/21/2008
    From: Turlock, CA, USA
    Status: offline     		First mess with the HSN until the buggy doesnt die. You could have it too lean up top and it dies out when going mid to top speed. Once you have the HSN set, try the pinch test and keep an eye on temps. I like to tune to temp and acceleration. If it hesitates too much after punching it from a stop, the LSN is too rich.

    _____________________________

    XT2 (not stock)

    (in reply to hchou)
           Post #: 134

    RE: XTM 1/7 XLB - 7/16/2008 3:33:47 AM   
    MassiveMods



    Posts: 1561
    Joined: 11/23/2003
    From: SydneyNSW, AUSTRALIA
    Status: offline     		Anybody got an exploded view of the Rambo 2 speed tranny ?

    _____________________________

    www.massivemods.com Specialising in Engine Mods, Superior Quality Racing Fuels, Australian Go Engine distributor/developer.

    (in reply to IloveMYxt2)
           Post #: 135

    RE: XTM 1/7 XLB - 8/8/2008 4:43:02 PM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline     		I'm having an issue with my XLB and am not sure what to do...

    - Went through the break in cycle. Probably not the best break in since this is my first nitro, but tried to follow it as close as possible according to the manual.
    - Gone through a couple of tanks (4 - 5?) and tuned the motor so it's running around 220 - 260.
    - Changed the glow plug after break in and changed it again (on my third).

    I have problems when I first start the motor. It sounds like it's running pretty rich and many times it will die if I don't crack the throttle a little to give it a higher idle. This makes me think I should lean out the HSN but when I do that, the temp gets close to 300. Is this just an issue of adjusting the idle so it idles a higher?

    (in reply to MassiveMods)
           Post #: 136

    RE: XTM 1/7 XLB - 8/9/2008 12:48:35 AM   
    IloveMYxt2



    Posts: 225
    Joined: 5/21/2008
    From: Turlock, CA, USA
    Status: offline     		No dont mess with the HSN. If your reaching 300 your too lean. Richen the HSN a bit. It will most likely try to die when your first start the engine, thats why you should give it a little bit of throttle to keep it going, and once its warmed up, it should idle fine. Maybe try leaning the LSN 1/16 of a turn and richen the HSN 1/8 of a turn. The LSN is for idle and acceleration.

    But its normal for the engine wanting to die sometimes after you first start it, especially if you have after run oil in there. I always give it a little bit of throttle when I first start it and let it warm up.

    _____________________________

    XT2 (not stock)

    (in reply to hchou)
           Post #: 137

    RE: XTM 1/7 XLB - 8/9/2008 6:26:27 AM   
    Mr Terminator



    Posts: 418
    Joined: 11/14/2007
    From: Manchester, UNITED KINGDOM
    Status: offline     		Tune the HSN to achieve the best possible top speed,then adjust the LSN for bottom and mid range,it sounds as if your battling with the wrong screw,once they are done then set your idle.Temps of around 240-260f are fine after WOT,don't just tune to temp.tune to sound and vision also,you can tell when an engine is on song and there should always be a smoke trail but not too heavy.You'll get there mate,I junked the SH engine in mine and got a LRP Z.28, after that it was amazingly reliable and crazt fast....

    _____________________________

    HPI Baja SS/Genesis LE/MG16MT/VRX-2 Pro/HB Lightning GTX2/NB16T/Micro T.

    (in reply to IloveMYxt2)
           Post #: 138

    RE: XTM 1/7 XLB - 8/9/2008 8:28:10 PM   
    hchou


     

    Posts: 45
    Joined: 6/17/2008
    From: , CA, USA
    Status: offline     		Thanks folks! Sounds like I had things ok and it was running as it should. I put after oil in after each bashing and didn't know that would make it bog down when starting. I'll try the suggestions.

    (in reply to Mr Terminator)
           Post #: 139

    RE: XTM 1/7 XLB - 9/24/2008 11:05:34 AM   
    pwaddell


     

    Posts: 10
    Joined: 5/8/2006
    From: Port Of Spain, TRINIDAD AND TOBAGO
    Status: offline     		Hey there,

    Just got mine second hand and had to fix a