Register and gain access to Discussions, Reviews, Tech Tips, How to Articles, and much more - on the largest Arrma RC community for RC enthusiasts that covers all aspects of the Arrma-RC brand!

Register Today It's free! This box will disappear once registered!

Constantly overheating right out of the box

Discussion in 'Granite' started by sparky_18, Oct 4, 2015.

  1. sparky_18

    sparky_18 Well-Known Member

    Joined:
    Oct 4, 2015
    Messages:
    3
    Likes Received:
    3
    Arrma RC's:
    Granite
    Hi,
    Just got my son the Granite. It overheats within minutes every time we use it. Very annoying. Is this normal?
     
    WoodiE and Blxer like this.
  2. Blxer

    Blxer Well-Known Member

    Joined:
    May 20, 2015
    Messages:
    231
    Likes Received:
    125
    Arrma RC's:
    Granite
  3. poombah

    poombah Well-Known Member

    Joined:
    Jul 24, 2015
    Messages:
    99
    Likes Received:
    78
    Location:
    Western Australia
    Arrma RC's:
    Fury
    Which Granite?

    I'm running my fury on upgraded spur and pinion and have got that thing cooking but it's never cut out. Sounds like something is a miss.
     
  4. sparky_18

    sparky_18 Well-Known Member

    Joined:
    Oct 4, 2015
    Messages:
    3
    Likes Received:
    3
    Arrma RC's:
    Granite
    Thanks for the reply. It was pretty tight. I loosened it a little but it still cut off after a couple of minutes. I'm going to try loosening it a bit more. When it cuts out it flashes red slowly but it does not feel hot to touch?

    It is a Granite Mega.
     
    Blxer likes this.
  5. Blxer

    Blxer Well-Known Member

    Joined:
    May 20, 2015
    Messages:
    231
    Likes Received:
    125
    Arrma RC's:
    Granite
    @sparky_18, I'm not familiar with the granite mega but, I'm going to try and help. Since you say, motor isn't hot to the touch, then it sounds like the low voltage cut off is kicking in. If your running NIMH batteries in it and it's set for lipo, I believe it will shut off like your explaining. Opposite for running lipo in NIMH mode, the lipo would be drained dry and destroyed. I'd check the settings on esc just to make sure.
    Hope this helps
     
    Desertrat likes this.
  6. Walter

    Walter Well-Known Member

    Joined:
    May 19, 2015
    Messages:
    278
    Likes Received:
    203
    Arrma RC's:
    Fury, Granite
    If neither the motor nor the ESC seems hot I doubt it's overheating. Temperature protection is supposed to kick in when the ESC is over 80 degrees Celsius (176 degrees Fahrenheit) for over 5 seconds. I think LVC cutoff due to using an NiMH battery when the ESC is set to LiPo would be more likely.

    How are your jumpers set on the MEGA ESC?

    upload_2015-10-9_9-12-15.png


    If the jumpers check out I would call Arrma and perhaps they will send you a new ESC.

    You might also check to make sure your charger is good and the battery really is getting fully charged.
     
    FatherSonRC and poombah like this.
  7. poombah

    poombah Well-Known Member

    Joined:
    Jul 24, 2015
    Messages:
    99
    Likes Received:
    78
    Location:
    Western Australia
    Arrma RC's:
    Fury
    Agreed with above sounds like low voltage cut off .. Lipo full charge is ~4.2volt per cell and cut off Is about 3.6 volt per cell for lipo on Arma esc in my experience which is 7.2volt based on 2s.... Nimh full voltage is 7.4 volts
     
  8. poombah

    poombah Well-Known Member

    Joined:
    Jul 24, 2015
    Messages:
    99
    Likes Received:
    78
    Location:
    Western Australia
    Arrma RC's:
    Fury
    Based on 6 cell nimh... 7 cell nimh is 8.4volt iirc
     
  9. Unusual RC

    Unusual RC Moderator
    Staff Member Supporting Member

    Joined:
    May 18, 2015
    Messages:
    805
    Likes Received:
    295
    Location:
    The Hague, The Netherlands, Europe
    Arrma RC's:
    Fury, Mojave
    Do not forget that NIMH batteries drop their voltage a lot when power is requested from the pack.

    As soon as you turn the throttle off, and you measure the idle voltage, you might think it is still fully charged.

    A 7 cell NIMH will go up to 9.0V fully charged.
    But on full throttle voltage might drop to less than 6.0V easily.

    Lipo's almost not show this behavior at all, that is the reason why the worst 7,4V 2S lipo will let your ride go faster than the best 8,4V 7 cell NIMH out there!
     
  10. poombah

    poombah Well-Known Member

    Joined:
    Jul 24, 2015
    Messages:
    99
    Likes Received:
    78
    Location:
    Western Australia
    Arrma RC's:
    Fury
    Voltage difference amazes me how good LIPO are at keeping a peak voltage throughout the run time. NIMH is like yeah woo for first few minutes then the fun tapers off exponentially ..LIPO you're like hmm I think I better rest the car now it's STILL going .

    Will never look back from LIPO!
     
    Unusual RC and Aflan like this.
  11. sparky_18

    sparky_18 Well-Known Member

    Joined:
    Oct 4, 2015
    Messages:
    3
    Likes Received:
    3
    Arrma RC's:
    Granite
    Jumpers are set correctly. I have a NIMH battery. When it cuts out, there is still plenty off battery life left. After it cuts out, If I turn the ESC off and then back on, It will run again. It cuts out again shortly after doing that though.
     
  12. casualbasher

    casualbasher Member

    Joined:
    Nov 29, 2015
    Messages:
    37
    Likes Received:
    13
    Check too see if you're in lipo mode thats often the issue
     
  13. UnworthyButton1

    UnworthyButton1 Active Member

    Joined:
    Jan 3, 2016
    Messages:
    1
    Likes Received:
    0
    Arrma RC's:
    Granite
    I'm having the same problem. The esc blinks after 5 minutes and nothing is hot. The battery is pretty warm though. I have warranty but the people that I bought it from said I need to know what's wrong with it and then they'll fix it
     
  14. Drewski

    Drewski Well-Known Member

    Joined:
    Sep 17, 2015
    Messages:
    60
    Likes Received:
    13
    Arrma RC's:
    Granite
    I have a granite blx less than 6 months old doing the same thing. If I try to hammer the throttle the motor cogs or trys to go and won't. If I ease into the throttle it will go but if I hammer it while its going the esc will kinck into low voltage mode blue light blinking. It's not on lipo mode my batteries are good fully charged. Starting to think I got a big piece of crap
     
  15. Rooles

    Rooles Well-Known Member

    Joined:
    Dec 30, 2015
    Messages:
    101
    Likes Received:
    43
    Location:
    Wichita
    Arrma RC's:
    Granite
    I had the same issue guys. I found out it was my battery. At how many amps are yoi charging your battery? Do you have a multimeter?
     
  16. Drewski

    Drewski Well-Known Member

    Joined:
    Sep 17, 2015
    Messages:
    60
    Likes Received:
    13
    Arrma RC's:
    Granite
    I only have two batteries the stock 8.4 4600 and a venom 5000mh. I charge them on 4 amps. It's just a basic quick charger by onyx. Yes I have multimeter
     
  17. Rooles

    Rooles Well-Known Member

    Joined:
    Dec 30, 2015
    Messages:
    101
    Likes Received:
    43
    Location:
    Wichita
    Arrma RC's:
    Granite
  18. Drewski

    Drewski Well-Known Member

    Joined:
    Sep 17, 2015
    Messages:
    60
    Likes Received:
    13
    Arrma RC's:
    Granite
    I don't think I'm having the same issue with my batteries. I took them to the lhs he says its my brushless motor. When it cogs it is pulling a lot of amps and making the esc think its low voltage. So looks like I'm gonna be without my truck for a couple weeks
     

Users found this page by searching for:

  1. granite runtime a4rma

  • Welcome to Arrma Forum

    Arrma Forum is a Arrma RC fan site that was started to give Arrma RC enthusiasts a place to come together and discuss and share their experiences with the entire Arrma-RC product line, such as the Arrma Kraton, Arrma Talion, and Arrma Granite.

    We welcome all Arrma RC enthusiasts, both new and old, racers and bashers that share a common goal - a willingness to help and learn.
  • Disclaimer