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Thread: Only runs slow

  1. #1
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    Only runs slow

    My son just bought his first rc with all his own money. Hes so happy untill we put a fully charged 2s lipo in and turned lipo mode on he pulled the trigger and it topped out at like 3mph and was jittery thought it might have just been the battery so i grabbed another battery with the same results we have several traxxas trucks and cant think of what the problem might be. Any help would be great

  2. #2
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    Is Training mode on? Is there anything caught in the driveline? Is a grub screw loose on one of the shafts and binding? Could you post a video of what it's doing?
    Last edited by Maxximum Overdive; 07-29-2012 at 08:27 PM.

  3. #3
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    No i double checked its in sport mode it rolls smooth and i dont see any loose screws just only goes about 3 mph

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    Did you try to reprogram the throttle endpoints in the ESC?

  5. #5
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    No didnt think about that cause it ran fine when he had the stock battery in but when we put the lipo in and changed to lipo mode he ran for about 5 min and then it shut off we thought it was the thermal cutoff but we let it cool and now it only goes slow sorry i didnt put that in my first post

  6. #6
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    Was the light green when you first put it in lipo mode? Did it flash red at all, if so was it fast blinking or slow?

  7. #7
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    When i put the first lipo in and he ran it after it shut off and we let it cool and restarted it it blinked slow red so i thought it was the lipo cutoff so then i grabbed another batter that had just finished charging and the light stayed green but still only goes slow

  8. #8
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    Try unplugging your steering servo and see if it revs to the max speed. May sound weird but the stock servo causes all kinds of crazy stuff to go on with the ESC when it goes bad. If that doesn't work I'd call Traxxas.

  9. #9
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    Nope didnt help man i feel so bad hes been saving up all summer for something to happen his first day out with it

  10. #10
    RC Turnbuckle Jr. JimmyNeutron's Avatar
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    What is the cell voltage of the LiPo?
    Whatever it is I just typed... could be wrong.

  11. #11
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    Its a 2s ******* **** tech 2.2 2200 mah 25c

  12. #12
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    I run these same batteries in all my other cars including a mini revo n they all run fine

  13. #13
    RC Turnbuckle Jr. JimmyNeutron's Avatar
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    You misunderstood my question.
    What are the actual cell voltages of the LiPo you have... you will have to measure this value with a cell checker, multimeter, or possibly your charger.

    Also, you should probably edit the asterisks (*) out of your post. Points can be issued for those.
    Whatever it is I just typed... could be wrong.

  14. #14
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    Tried putting the stock traxxas. Attery back in and changed it back to lipo mode disabled and still no luck

  15. #15
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    Called traxxas they said bad esc gotta send it in

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