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  1. #161
    RC Turnbuckle Jr. MITCH316's Avatar
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    Exclamation Losi LST2 diff drive axial MOD

    I have been getting a lot of PM's lately about this mod and how it works and fits together; I thought I would post the details here for everyone as I recently rebuilt my diffs after inspecting them.

    This should be read in conjunction with Post #26...a lot of the questions have been what happens from here and how does it fit together.

    Traxxas Part #5454


    I hack sawed the threaded end off and then grinded down so that the drive axial was a length of 22.25mm. I also chamfered the sharp edge so it was nice and smooth fit in the diff cup.



    When installing in the diff, this is what I did.



    I fitted the pin which I took from LOSI LOSB3540 Differential Outdrive Set...(I only needed the pin for the traxxas drive axle); I then put 1 x 6mm shim and the o-ring.

    This is how it fits to the spider gear. Their is a recess in the back of the spider gear to accommodate the pin.



    In the view below you can see the stub axial protruding slightly out of the spider gear...this is the side I cut the tread off and chamfered to remove the sharp edge. If you insert the Losi drive cup it protrudes something similar.



    The end result...this is what it looks like when the spider gears and internal crossbars and spacers; diff cup and ring gear are assembled together .

    Rock n Rolla !

  2. #162
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    Exclamation Losi LST diffs part list

    Some of the questions that have been asked in the PM's I have received are the parts I used to build the diffs.

    I created a part list for your info:

    • 2 x Losi LOSB3532 Blue Aluminum Differential Case
    • 2 x Losi LOSB3528 Heavy Duty Differential Cup
    • 2 x Losi LOSB3534 Differential Ring & Pinion
    • 2 x Losi LOSB3538 Differential Bevel Gears
    • 2 x Losi LOSB3541 Differential Drive Yoke because I used the traxxas centre CVD
    • 2 x Losi LOSB3523 CV Driveshaft Rebuild Set for the yoke
    • 2 x Losi LOSB3540 Differential Outdrive Set I only needed the pin for the traxxas stub axle
    • 2 x Losi LOSA6942 Sealed Ball-Bearings 4/diff
    • 1 x Dub2108 Du-Bro Flat Washer 2.5mm for the yoke to attach to centre cvd conversion
    • 1 x KYO96644 Kyosho 8 X 10mm Shim Set you need 8mm shims for this diff and 6mm
    • 2 x Traxxas 5454 Steel Stub Axles if you using traxxas cvd's
    Rock n Rolla !

  3. #163
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    Quote Originally Posted by craig.mitch316 View Post
    Still waiting on parts to arrive...I thought I would include this in my new build thread.

    Where I live it rains quite a bit and have sweltering humid summers. I am not a big fan of the outwears shroud so I went the Plasti Dip route. Note* Doing this mod to your ESC will void your warranty.

    First of all I cut the switch off...I kept having problems with it. This way I am forced to unplug my batteries when finished using my truck. I just soldered the 2 wires together to bypass the switch.



    I then went and used electrical tape to cover the heat sink and plugs to protect while coating with Plasti Dip:





    My advice is don't coat to thick or you will have issues trying to fit the ESC back into the cover.

    This has proven to be very successful in running in wet conditions with no issues what so ever. I knowingly can go drive my truck with confidence now and not worry about killing my ESC.

    I have been running this mod for about 5 months now with no heat issues or any issues with my ESC
    Doing this mod tomorrow bro. I got my hands on a cheap Mamba monster ESC , so I will use that to build my weather proof erbe. I bought black plastic dip, but I am tempted to take it back and exchange it for the red, since it will reveal the spots that need to be coated better than black. What do you think ?

  4. #164
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    Quote Originally Posted by Revoroller View Post
    Doing this mod tomorrow bro. I got my hands on a cheap Mamba monster ESC , so I will use that to build my weather proof erbe. I bought black plastic dip, but I am tempted to take it back and exchange it for the red, since it will reveal the spots that need to be coated better than black. What do you think ?
    You wont regret the mod bro...I've never submerged my ESC totally in water but have played in wet conditions with no issues whatsoever (It can rain for days on end here in Brisbane sometimes and a lot in summer); playing in wet grass or mud has never been an issue. Red was the only colour I could get at the time of the mod. Red you will probably see easier when doing.

    My advice is coat it thin or you wont get your ESC back in its case...I need to do my new servo as its not waterproof...I think its splash resistant.
    Rock n Rolla !

  5. #165
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    i'll second that! great work buds...
    Quote Originally Posted by BAD RC View Post
    This thread should be in a magazine! I don't own a ERBE, but your tech write up is AWESOME!!!
    if you're not fast, you're last.

  6. #166
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    Quote Originally Posted by craig.mitch316 View Post
    You wont regret the mod bro...I've never submerged my ESC totally in water but have played in wet conditions with no issues whatsoever (It can rain for days on end here in Brisbane sometimes and a lot in summer); playing in wet grass or mud has never been an issue. Red was the only colour I could get at the time of the mod. Red you will probably see easier when doing.

    My advice is coat it thin or you wont get your ESC back in its case...I need to do my new servo as its not waterproof...I think its splash resistant.
    Thanks bro!

  7. #167
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    Quote Originally Posted by kevfrostbite View Post
    i'll second that! great work buds...
    Cheers mate...I'm glad you find the info provided useful .
    Rock n Rolla !

  8. #168
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    Exclamation D-Day LST2 diff test 3

    This is a continuation of post #146

    This is video footage from 24/09/2012 which is what I called test 3.

    At the end of the video I show you the race temp strip so you can get an idea of temps reached with 19/58 gearing.

    I did a solid set of battery run with 2/3s from start to finish; the truck never had a break until the end...I was testing the impact the 19 pinion had with motor temps.

    Esc settings were changed from original settings from the first test.

    Punch set @ 30% and toque control set @ 7.5.

    This is some skate park bashing and grass speed runs.
    Last edited by craig.mitch316; 10-22-2012 at 01:42 AM.
    Rock n Rolla !

  9. #169
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    Where did the heatsink come from?
    Xerun 150A 2200kv ERBE
    Dewalt 14.4v Summit

  10. #170
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