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Thread: Reducing Temps

  1. #1
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    Reducing Temps

    After a min of running temps of my motor and esc are getting a bit hot.You can touch it with a finger but getting pretty hot.
    -2 Promatch Racing 1600 packs
    -Series Connector
    -Mini Quake Heatsink for motor

    Any ideas on what can help or what I should do?

    Thanx

  2. #2
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    is there a gap between the heatsink and motor?
    keep your mouth closed and let your eyes listen

  3. #3
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    Well, you really gotta know what the actual temps are, you really won't want to keep your finger on it after about 100*F, it will get hot, it's "supposed to", it just depends on how hot. But with the 2 packs in series, it's no wonder, you're pushing the powertrain to its max with those. Only thing really would be a heatsink on the motor and maybe a fan on the ESC, and maybe a gearin change. You using the pinion they say to use when in series, the optional one that came with it?
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  4. #4
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    Quote Originally Posted by ////AMG
    After a min of running temps of my motor and esc are getting a bit hot.You can touch it with a finger but getting pretty hot.
    -2 Promatch Racing 1600 packs
    -Series Connector
    -Mini Quake Heatsink for motor

    Any ideas on what can help or what I should do?

    Thanx

    I would not judge the temp with a finger. Get a temp guage. The ESC will go into thermal protection at 160-165 degrees. Meat cooks at 130-140
    Keep flex'in those forum keyboard muscles.

  5. #5
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    my esc always goes into thermal protection do to I do tons of donuts
    keep your mouth closed and let your eyes listen

  6. #6
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    Does the motor also have a way of thermaling too? Or at least a way for the ESC to know the temp or whatever, some way for the thing to stop itself if the motor is going to overheat too?
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  7. #7
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    Quote Originally Posted by xtraman122
    Does the motor also have a way of thermaling too? Or at least a way for the ESC to know the temp or whatever, some way for the thing to stop itself if the motor is going to overheat too?
    nope...................
    keep your mouth closed and let your eyes listen

  8. #8
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    Whats the cheapest temp gun i can buy?

  9. #9
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    Quote Originally Posted by ////AMG
    Whats the cheapest temp gun i can buy?
    Duratrax one for $25-ish at Tower I think ?

  10. #10
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    Here's all the cheapest ones I could find.

    - Cen Tech, looks IDENTICAL to the DTX one
    - Duratrax
    - HPI
    - Axial
    1/16 Revo
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    X-6

  11. #11
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    touching your finger to it can tell nothing. i can touch my motor when its hot but i could never give a degree. get a small on board that you can look while running. i bought the little lime green venom micro temp gauge on ebay for like $18 or something. hot to your finger can be around 130 which is about normal for it to run (for me anyway) and hot to your motor and esc would be like 170-180, which would give you a burn right away. all that is IMO.
    what was that? what was what..oh that. thats mine.

  12. #12
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    with burshless motors.. heat guns are a must. and besides my heat sink i did a hole in the window on the motor/esc side and it helped even more than the heat sink.

    Last edited by 1FastPede; 07-28-2009 at 09:41 PM.
    "You must first climb, to be at the top"

  13. #13
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    My ESC would go until into thermal shutdown stage 1 all the time with 2 batteries in series. Even after I cut holes on the body. But then I added a blowing fan, it hasn't shut down on me since. The ESC stays at 105 degrees. I moved the servo to the other side so I could zip tie the fan.



    I'm thinking just adding a fan to the ESC heatsink is the best idea.

    I've found a fan like that laying around that looks like this, I'm going to try that tomorrow and see what happens.



    Here's the link http://www.newegg.com/Product/Produc...82E16835119098

  14. #14
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    +1 on cutting a hole Pede, i cut out where the entire windshield was supposed to be and temps before after two packs were about 150 and after the hole are around 130-135
    what was that? what was what..oh that. thats mine.

  15. #15
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    wow thats a huge fan! i bet it keeps things nice and cool.
    Got Li-Po?

  16. #16
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    Quote Originally Posted by mx2004
    My ESC would go until into thermal shutdown stage 1 all the time with 2 batteries in series. Even after I cut holes on the body. But then I added a blowing fan, it hasn't shut down on me since. The ESC stays at 105 degrees. I moved the servo to the other side so I could zip tie the fan.



    I'm thinking just adding a fan to the ESC heatsink is the best idea.

    I've found a fan like that laying around that looks like this, I'm going to try that tomorrow and see what happens.



    Here's the link http://www.newegg.com/Product/Produc...82E16835119098
    Where did you get the fan in the pic?

  17. #17
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    I got it from a computer case. It's made my Yate Loon Electronics, PN: d50bm-12b. I did a Google search but that part number on their website shows another fan. Here's one like it though...

    http://www.newark.com/nmb/bm4515-04w...wer/dp/68K1095

  18. #18
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    Quote Originally Posted by mx2004
    I got it from a computer case. It's made my Yate Loon Electronics, PN: d50bm-12b. I did a Google search but that part number on their website shows another fan. Here's one like it though...

    http://www.newark.com/nmb/bm4515-04w...wer/dp/68K1095
    How did you hook it up whats it running from?

  19. #19
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    Quote Originally Posted by zrau17
    touching your finger to it can tell nothing. i can touch my motor when its hot but i could never give a degree. get a small on board that you can look while running. i bought the little lime green venom micro temp gauge on ebay for like $18 or something. hot to your finger can be around 130 which is about normal for it to run (for me anyway) and hot to your motor and esc would be like 170-180, which would give you a burn right away. all that is IMO.
    This?
    http://www.greathobbies.com/producti...rod_id=VEN0601

    How are these are they common sense?

  20. #20
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  21. #21
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    Quote Originally Posted by ////AMG
    How did you hook it up whats it running from?
    Just hooked it up to the back of the ESC battery connector, worked fine, turns on as soon as I plug in the battery. You can also pick up a cable at you lhs that connects to one of your Rx's channel and hook it up that way... someone here told me it outputs 6 volts.

  22. #22
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    Quote Originally Posted by xtraman122
    Here's all the cheapest ones I could find.

    - Cen Tech, looks IDENTICAL to the DTX one
    - Duratrax
    - HPI
    - Axial
    Thanks for the links!

    The CEN one looks better than the Duratrax because it seems to have more features. I wonder if it's as accurate and reliable, though.

  23. #23
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    Quote Originally Posted by JatoTheRipper
    Thanks for the links!

    The CEN one looks better than the Duratrax because it seems to have more features. I wonder if it's as accurate and reliable, though.
    buy the one off hobby city

    http://www.*********.com/*********/s...idProduct=8297

    very cheap and very good.
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  24. #24
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    Quote Originally Posted by concreat
    buy the one off hobby city

    http://www.*********.com/*********/s...idProduct=8297

    very cheap and very good.
    Shipping kills the deal

  25. #25
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    I never thought of checking there, I'll have to pick one up on my next order.
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  26. #26
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    Just gear the truck to run at a decent temperature, your trying to put a bandaid on on when the gearing really need to be changed. Add a heatsink to the motor, it will work better then the fan and buy a temp gun, they are $40.00 for a O'Donnell which is cheaper then your motor or ESC. The max temp on that motor is 200 degrees, I put a heatsink on mine and I am running a 45 spur with a 27 pinion and she fast enough to have fun and keeps the temps in check.
    ERBE+TEKIN RX8+MAXAMPS=TO TOUGH TO TAME!!!!

  27. #27
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    Don't brushless motors actually get hotter when they get geared down? I was wondering also why they say to use a smaller pinion for the speed runs with 2 packs in series, I figured with more power you'd want a bigger pinion, or does it just put too much of a load on the esc?
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  28. #28
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    Do these brushless motors run cooler during the winter?If so I will just wait to try series.
    ERBE

  29. #29
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    PICK UP TRUCK,A BLONDE & A BASSBOAT & 80%.

  30. #30
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    are you guys having huge heat issues running 3s lipos in parallel on stock gearing?

    Will cutting out the front window help this or should I regear?

    I have hit thermal shutdown twice in series with the stock batteries and I'm wondering if the same thing is gonna happen with the lipos

  31. #31
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    In series you're supposed to go to the smaller pinion to put less of a load(current draw) on the ESC. I would probably do the same with 3S, but I see no point anyways, the thing is already stupid fast on 2S.
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  32. #32
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    I picked up that Centech temp gun at Harbor freight, there is a couple stores in the chicago burbs.
    It was $9.99 !

  33. #33
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    Quote Originally Posted by Justanotherguy
    I picked up that Centech temp gun at Harbor freight, there is a couple stores in the chicago burbs.
    It was $9.99 !
    That's a good deal! I probably have the same one (same brand and bought it from Harbor Freight) but I paid $40 for it i think.

  34. #34
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    There's a Harbor Freight 20 minutes from me, I'll have to go look.
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  35. #35
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    I added a fan and cut out the windsheild and added screen to it to keep out the big stuff.



    3.3 Revo,T-Maxx ,1/16 E-Revo,2.5 4Tec

  36. #36
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    I had my first thermal shut down today. I was doing speed runs on grass. (not smart) The wheels kept going faster and faster and the truck,,,not so fast. I was chasing my son and we had a blast. I did learn not to do this anymore and I am just giving you all fair warning to. BAD IDEA. After a few minutes cooling down it was ready to run again. All on 3s 1550 *****s. As for a temp gun, I use my craftsman from my garage.

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    & soon 1/16 Slash VXL

  37. #37
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    cut out the roof scope to get some air in there
    if you want me to i can break your truck for free!

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