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  1. #1
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    Lightbulb My water cooled slash

    Hello:
    First at all:

    Sorry for a lot of images

    *What’s the best and easiest way to control your temperatures? Gearing, gearing, gearing! We all know this so please let’s not go into a debate here.

    I was making a very long run in my neighborhood and my motor was running warm and i stoped to cool the motor. When i stoped i was thinking: how can i make my motor run cool without stooping? and i thougth like water cooling system and this week i made my watercooled slash with parts found in my house.

    Now the pics:

    The radiator: I found this radiator in a very old heater. I made holes for the cooper tubes





    I attached the radiator directly to the chassis with these screws



    The water pump: I used a water pump for a computer.(send me a pm if you want more info.)



    The motor: i bought a water cooling jacket(send me a pm if you want more info.)





    I need to cut a piece of a gearbox because the water cooling jacket didn't fit.



    The same history with the rear skid plate:



    The chassis: When I put the water pump, I need to change the place of the receiver box.





    Next post the body:
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  2. #2
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    The body:i need to cut a piece of he body for the ventilation for the radiator







    And that's it, if you want more info, send me a pm with your question

    Thanks for reading
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  3. #3
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    Thats cool. You should sell them
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  4. #4
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    Sometimes the best ideas start out looking like a frankenstein experiment. Keep track of your gearing/motor temps/outside air temps/run time/etc. You would have to compare it to say no cooling system or a heat sink with fan etc to see if your idea is viable. At this point no because its too big and wouldn't last too long. And most guys don't want water on the track if its inside.

  5. #5
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    Quote Originally Posted by smallwallman View Post
    Thats cool. You should sell them
    Thanks, maybe i can send this idea to traxxas.
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  6. #6
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    Someone give this guy a trademark! Nice job man! I have seen something like this before, but it was some crazy design that didn't need to be done.
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  7. #7
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    Quote Originally Posted by Cherry2000 View Post
    Sometimes the best ideas start out looking like a frankenstein experiment. Keep track of your gearing/motor temps/outside air temps/run time/etc. You would have to compare it to say no cooling system or a heat sink with fan etc to see if your idea is viable. At this point no because its too big and wouldn't last too long. And most guys don't want water on the track if its inside.
    Sorry i forget put the info:


    Without the watercooling system:
    Motor:140F°-160F°
    ESC:120F° - 130F°
    Gearing: 90-23
    Ambient Temp: 24-25 C°( i dont know how much is in F°)

    With watercooling system:
    Motor:110F°-125F°
    ESC:125F° - 130F°
    Gearing: 90-23
    Ambient Temp: 24-25 C°(i dont know how much is in F°)

    I don't understand what mean: "At this point no because its too big and wouldn't last too long."
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  8. #8
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    Quote Originally Posted by BanditTransit View Post
    Someone give this guy a trademark! Nice job man! I have seen something like this before, but it was some crazy design that didn't need to be done.
    Thanks!!
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  9. #9
    RC Turnbuckle Jr. rag6's Avatar
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    Sweet!

    Nice work!
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  10. #10
    RC Turnbuckle Jr. rag6's Avatar
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    How much weight did this add?
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  11. #11
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    Quote Originally Posted by DBG View Post
    I don't understand what mean: "At this point no because its too big and wouldn't last too long."
    A simple one pass copper tube with cooling fins just radiating the heat might be all that's needed and save weight. Also where its mounted while might be good for airflow might not be so good when hitting stuff like walls or trees other cars etc. Cool idea but with the way I drive Id break it.

  12. #12
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    Quote Originally Posted by rag6 View Post
    How much weight did this add?
    Please give the info for the pump, and water cooling jacket in the thread. I could pm you about it, but may as well share with everyone!
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    Agreed a simple copper tube with fins would probably work about the same but I have to admit that seeing the rad thru the front body cutout looks killer!
    XO-1, Roadrunner Slash

  14. #14
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    This is cool. Good to see some ingenuity.

  15. #15
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    wow man... this would be great out here... Iraqi desert gets a bit toasty. Yeah maybe a one pass smaller radiator might work better, that just means there are more options to this guys great idea! You can't knock this idea without acknowledging the good in it, come on guys!

    Well done man!!!

  16. #16
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    Traxxas makes a water cooled system for one of the boats
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  17. #17
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    I bet Jang would give it a thumbs up! Nice job!
    The harder I bash, the more I can upgrade.

  18. #18
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    I also think this is/was a great rc modeling project...great work to the man from Cost Rica
    "enjoy your ride"

    Dennis

  19. #19
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    Wow nice work, you did an incredible job for what needed to be done for this project!
    I dont think there is anything else out there for rc cars that lower the temp that much by using water, this is very unique,
    you should have people pay you on how to build the design!

  20. #20
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    Quote Originally Posted by Cherry2000 View Post
    A simple one pass copper tube with cooling fins just radiating the heat might be all that's needed and save weight. Also where its mounted while might be good for airflow might not be so good when hitting stuff like walls or trees other cars etc. Cool idea but with the way I drive Id break it.
    Quote Originally Posted by judgegixxer View Post
    Agreed a simple copper tube with fins would probably work about the same but I have to admit that seeing the rad thru the front body cutout looks killer!
    ok thanks for the answer:

    yes, i made a little prototype and tested on the car but i dont see a lot of difference in the temps, just lowered like 5 to 10 F° with the same conditions.
    The radiator is mounted before the bumper attached directly in the chassis and today I accidentally crashed and just the tubes moved a bit to the front

    But thanks for the suggestion
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  21. #21
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    Quote Originally Posted by rag6 View Post
    Please give the info for the pump, and water cooling jacket in the thread. I could pm you about it, but may as well share with everyone!
    Water pump:

    Power: DC12V(my pump works great with 6V)
    Output: 3.6L/m or 68GPM @12V
    Vertical lift: 3m (10ft)
    Current: 320mA@ DC12V
    Intake: 8mm ID/10mm OD Dia.
    Outlet: 5 mm ID/8mm OD Dia.
    Self-priming: No
    Life span: > 20,000hrs @ 1600rpm~4200rpm
    Noise: << 38dB
    Working Temp: 55'C (non-submersed)
    Size(L*W*D): 2.0"x1.7"x1.36" (52mm X 42.7mm X 34mm)
    Weight (net): 5.0oz

    Water cooling jacket:

    FEATURES: Silicon construction fits around 1.4-1.8"" (36-45mm) diameter boat / motors and directs water around can surface for extremely efficient / cooling / Two PVC tubes make connecting inlet and outlet lines easy / / INCLUDES: Water Cooling Jacket with two PVC Tubes / / REQUIRES: Placing around motor and installing cooling lines (standard size fuel / tubing (GPMQ4131) can be used for cooling lines / / SPECS: Length: .96"" (24.5mm) / Inner Diameter: 1.2"" (32mm).
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  22. #22
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    Quote Originally Posted by RacerAV View Post
    wow man... this would be great out here... Iraqi desert gets a bit toasty. Yeah maybe a one pass smaller radiator might work better, that just means there are more options to this guys great idea! You can't knock this idea without acknowledging the good in it, come on guys!

    Well done man!!!
    Quote Originally Posted by smallwallman View Post
    Traxxas makes a water cooled system for one of the boats
    Thanks for the answer.
    I think that water cooling system is a bit small for a car
    I want Traxxas make a bigger water cooling system for a normal car but thanks for the suggestion

    Quote Originally Posted by billylightning View Post
    I bet Jang would give it a thumbs up! Nice job!
    Quote Originally Posted by orca44 View Post
    I also think this is/was a great rc modeling project...great work to the man from Cost Rica
    Quote Originally Posted by kennymonsta View Post
    Wow nice work, you did an incredible job for what needed to be done for this project!
    I dont think there is anything else out there for rc cars that lower the temp that much by using water, this is very unique,
    you should have people pay you on how to build the design!
    Thanks everybody
    My next step is make the hole on the body bigger for better cooling.

    I have a question for you:
    Can I use the XO-1 tires for the slash with the 17hex adapter?

    Thanks again
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  23. #23
    RC Turnbuckle Jr. rag6's Avatar
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    yes you can. You may want to check out the dragster rims. They are the same tires, but the rims have a wider offset for more stability. Do you have a link for where you got the pump and water jacket?
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  24. #24
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    Quote Originally Posted by rag6 View Post
    yes you can. You may want to check out the dragster rims. They are the same tires, but the rims have a wider offset for more stability. Do you have a link for where you got the pump and water jacket?
    Ok thanks for the help
    PM sent
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  25. #25
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    that is sick, you can patten it for a sale
    All I need now is to set a new lap record.

  26. #26
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    Quote Originally Posted by f687s View Post
    that is sick, you can patten it for a sale
    thanks!!!
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  27. #27
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    If you want more info about the pump and the watercooling jacket:

    Waterpump
    http://www.amazon.com/gp/product/B00...ls_o02_s00_i00

    Watercooling jacket:
    http://www.amazon.com/gp/product/B00...ls_o04_s00_i00

    And if you want more info about my slash, send me a pm
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  28. #28
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    A bit more info

    Here is a picture taken from the top of my car

    I moved the receiver box and the ESC and I made 2 holes to the chassis for put the water pump.



    I moved the receiver box and the ESC and I made 2 holes to the chassis for put the water pump.



    The radiator have a space between the bumper, the bumper mount and the radiator.

    If i crash, the radiator isn't going to be affected, because is not attached to any crash absorbers like the bumper or bumper mount.

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  29. #29
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    First if all you did a great job rigging this up and not letting anything stop you!
    If you search for 'water cooling jacket' you will see many that are used on RC boats, you may find one that you can use, tinker with or modify to your likings.

    I am thinking you can mount the radiator anywhere you want, the amount of air flow may not be extremely important as the cooling fins are dissipating the heat on their own. You could even make up two Water Cooling Jackets one for the motor and the other could have a removable top and be sealed at the bottom and you could put dry ice in it to chill the circulating water
    I do not know how fast that water circulates through the radiator and around the motor but remember the water has to move slow enough to pick up the heat from the motor and slow enough through the radiator to then cool that water.

    Very creative work, I like your efforts!

  30. #30
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    Quote Originally Posted by kwitty View Post
    First if all you did a great job rigging this up and not letting anything stop you!
    If you search for 'water cooling jacket' you will see many that are used on RC boats, you may find one that you can use, tinker with or modify to your likings.

    I am thinking you can mount the radiator anywhere you want, the amount of air flow may not be extremely important as the cooling fins are dissipating the heat on their own. You could even make up two Water Cooling Jackets one for the motor and the other could have a removable top and be sealed at the bottom and you could put dry ice in it to chill the circulating water
    I do not know how fast that water circulates through the radiator and around the motor but remember the water has to move slow enough to pick up the heat from the motor and slow enough through the radiator to then cool that water.

    Very creative work, I like your efforts!
    Thanks for all the ideas and the support.
    yep, maybe i am going make the 2nd water cooling jacket in the back of the motor( nice idea really )

    Thanks for the help
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  31. #31
    RC Turnbuckle Jr. O.G.'s Avatar
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    And now the burning question is: when are you going Lipo?? You're all hi-tech on the cooling apparatus, now you need to upgrade the power source!!

    Sent from the cockpit of my Jeep Wrangler
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  32. #32
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    Quote Originally Posted by O.G. View Post
    And now the burning question is: when are you going Lipo?? You're all hi-tech on the cooling apparatus, now you need to upgrade the power source!!

    Sent from the cockpit of my Jeep Wrangler
    That is a very good question.

    I am going to wait the LiFe battery .

    The LiPo battery is more expensive in my LHS here in Costa Rica than USA and I think* is prohibited send LiPo battery in a air plane.

    *I am not sure.I am going to see the regulations.
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  33. #33
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    That's a great place to live. I wish I was there

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  34. #34
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    Quote Originally Posted by O.G. View Post
    That's a great place to live. I wish I was there

    Sent from the cockpit of my Jeep Wrangler
    Yes, only when is a sunny day.... not like this week, only rain

    Bad week for my T-Maxx.

    Thanks to Traxxas to make the slash waterproof but i think is a bit dangerous run my slash in a lightning storm.
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  35. #35
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    Quote Originally Posted by DBG View Post
    That is a very good question.

    I am going to wait the LiFe battery .

    The LiPo battery is more expensive in my LHS here in Costa Rica than USA and I think* is prohibited send LiPo battery in a air plane.

    *I am not sure.I am going to see the regulations.
    SPC website said...

    As of May 16, 2012, we are no longer able to ship International orders using USPS due to new restrictions. As stated on the USPS website – “ Effective May 16, 2012, the Postal Service™ will revise Publication 52, Hazardous, Restricted, and Perishable Mail, to indicate that primary lithium metal or lithium alloy (non¬rechargeable) cells and batteries, or secondary lithium-ion cells or batteries (rechargeable), are prohibited when mailed internationally or to and from an APO, FPO, or DPO location. However, this prohibition does not apply to lithium batteries authorized under 349.22 when mailed within the United States or its territories.
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  36. #36
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    Quote Originally Posted by rag6 View Post
    ..............................
    It only apply in USA, not in Costa Rica
    Last edited by DBG; 06-03-2012 at 12:11 PM.
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  37. #37
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    Lightbulb Update

    Today, I was making my water cooled ESC

    I made like a sandwich with the: esc cooling fins, a computer cooling fins, cooper tubes and another computer cooling fins(in that order):

    ESC cooling fins with computer cooling fins.


    ESC cooling fins with computer cooling fins and cooper tubes.


    ESC cooling fins with computer cooling fins and cooper tubes. (side view before paste it)


    ESC cooling fins with computer cooling fins, cooper tubes and another computer cooling fins.


    ESC cooling fins with computer cooling fins, cooper tubes and another computer cooling fins. (side view with everything pasted)


    Maybe you are thinking "Why only use 2 tubes for the esc and not 3 or 4?"
    The answer is: Because when I put the tubes, the tubes have a very sharp curves and the water can't move fast and the pump can't push the water with that power.

    Thats it for today.

    Next time i am going to buy 3 small fans. (2 for the radiator and 1 for the ESC)

    Thanks for reading
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  38. #38
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    hmm i would try to see if you could mesh the heat sink fins together to better help heat disipation from the esc to the colling unit above

  39. #39
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    If you wanted to add even more cooling to the system you could get a 5v DC computer fan and mount it behind the radiator to pull air through it. If you wanted to conserve some space you could also look into retro fitting a computer CPU water cooling unit. They are a little more compact and already have a cooling fan setup mounted to it.

  40. #40
    RC Turnbuckle Jr. rag6's Avatar
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    Quote Originally Posted by DBG View Post
    It only apply in USA, not in Costa Rica
    That sux, silly me, I thought costa rica was a US territory. DOH!
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