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  1. #1
    RC Qualifier
    Join Date
    Jan 2012
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    Detroit, Mi
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    317

    Building up a new brushed erevo

    I am currently working on a daddy, daughter project in hopes of getting my Revo back from my daughter. She has taken a huge interest in running my car. So I have found a fairly inexpensive roller, that I plan on building up with her to run along side of me. Mine is brushless, that I put in training mode along with the nimh batteries for her to run it.

    Since I skipped over the brushed version, and I am planning on doing hers as brushed for now, what gearing are run in them? What can the traxxas brushed esc handle battery wise? For right now I only want the car doing about 20mph, and a long run time.

    I already have the steering servos, and receiver and radio, just need to get the esc and motors to get it moving.

    Any other info would be appreciated.

  2. #2
    RC Qualifier
    Join Date
    Jun 2015
    Location
    Brossard, QC
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    752
    The brushed version run dual titan motors. If you are building up, go directly with brushless so you don't need to get a dual motor mount.

    Unless you can find a brushed motor powerful enough to run a single brushed motor.

  3. #3
    RC Qualifier
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    Jan 2012
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    Detroit, Mi
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    317
    I was hoping to try and keep cost down. However with a stock brushless set up, running the 18/54 gearing on 4s in training mode should get the 20 mph speed I am hoping to achieve for her, and it is how she is running it now.

  4. #4
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    Jun 2015
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    Brossard, QC
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    752
    Yeah, or slow it down even more with the 65T spur.

  5. #5
    RC Enthusiast
    Join Date
    Jan 2016
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    28
    Quote Originally Posted by jdavi519 View Post
    I was hoping to try and keep cost down. However with a stock brushless set up, running the 18/54 gearing on 4s in training mode should get the 20 mph speed I am hoping to achieve for her, and it is how she is running it now.
    Go with a14t pinion 68t spur and then maybe you will find that you can run a single brushed motor. Use small wheels too. That will be the same as adding lower gearing.

    If your brushless only does 20 mph with 18/54 I think something is not right with your truck. I am running 18/65 and it does 30-35mph easy!

    Bearings and driveline bind can be a serious cause of reduced overall speed. The brushless motors need regular cleaning and maintenance as well.

  6. #6
    RC Qualifier
    Join Date
    Jan 2012
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    Detroit, Mi
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    317
    Quote Originally Posted by MadOgre View Post
    Go with a14t pinion 68t spur and then maybe you will find that you can run a single brushed motor. Use small wheels too. That will be the same as adding lower gearing.

    If your brushless only does 20 mph with 18/54 I think something is not right with your truck. I am running 18/65 and it does 30-35mph easy!

    Bearings and driveline bind can be a serious cause of reduced overall speed. The brushless motors need regular cleaning and maintenance as well.
    My Brushless E-revo is running the traxxas telemetry set up along with the bluetooth module, this allows a little more turn down on the training mode. Instead of the usual 50% I can turn it further down, all the way down to 1% where the car will barely move. However I can turn it back up and slap a set of 6S batteries in it and get around 70 out of it. There are no issues with the car. It is just has been detuned for a novice driver.
    ERBE, big block MERV, Sl4sh

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