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  1. #1
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    e revo pinion and spur ?

    I'm looking for help with my pinion & spur setup ? Is robinsion raceing gen3 slipper clutch a good setup and how many teeth is good, They only offer 60 & 65 T for spur and the pinions from 11 -28 T
    Im runniung a 1/10 scale e revo I changed from brushed to brushless Mamba max system 2200kv !
    It seems however loose I leave the slipper clutch and go up to 5 or 6 s I can't keep the front end down or spur gears to last awhile... Please help
    I want to enjoy my basher but not break it every few run's

  2. #2
    RC Turnbuckle Jr. 87 GN's Avatar
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    a good break in & the stock slipper is ok if you lock it down. only way you can kind of keep the front end down is detune the ESC & throttle control..
    Robinsion make a good slipper, just have not used it... I think there is a little work to get it to fit...

    I would keep the plastic spur & get a good gear mesh.. start gearing at 18 to 20 pinion & 54 spur.. for 2/3s...

    A temp gun is kind of a must have.....

    Hot motor + cool esc = under geared.
    Cool motor + hot esc = over geared
    Everything warm just right..

    Motor ~ 180/190*F (82/88*C) maximum, ideally 140/160*F (60/71*C), temps can be 10*F higher inside the motor
    ESC ~ pretty much same temps / Fan comes on @ 150*F (65*C)
    Lipo's ~ 140*F (60*C) max, ideally 100/120*F (38/49*C).........



    Diff ratio

    4s = 40 mph
    5s = 50 mph
    6s = 60 mph

    change the cell count, spur & pinion count, & tire size.


    BrianG speed chart:

    http://www.scriptasylum.com/rc_speed/top_speed.html

    Copy / paste: Import this:


    Differential Ratio: 2.8461538461538463
    Transmission Ratio: 1.8333333333333333
    Other Ratio: 1
    Spur Tooth Count: 54
    Pinion Tooth Count: 21
    Total Voltage: 22.20
    Motor KV: 2200
    Tire Diameter (inches): 5.9
    Tire Ballooning (inches): 0
    Motor Current Draw: 0
    Motor Coil Resistance: 0.006
    Spur/Pinion Ratio: 3 : 1
    Total Ratio: 15.65385 : 1
    Tire Circumference (inches): 18.54 inches (470.8 mm)
    Rollout: 1.18:1
    Total Motor Speed: 48840 RPM
    Vehicle Speed: 54.76 mph (87.97 km/h)
    Effective KV Value: 2200
    KT constant: 0.61 oz-in/A
    Last edited by 87 GN; 11-20-2012 at 09:14 PM.
    Would you go flip my truck back over??

  3. #3
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    Thank you I will give that a try once I pick up A new spur, I already ordered the robinsion raceing setup !
    When detuning the esc. Do I have to aslo drag the throttle curve all the way down and turn punch control -100% ?
    then oviously have to relearn the controler throttle !

  4. #4
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    anyother companys that you would suggest for the spur and pinion combo ? Maybe I'm using the wrong pitches together ?

  5. #5
    RC Turnbuckle Jr.
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    you will have to play with the settings to see what works for you but not to crazy . you want the power to come on smooth too much punch and curve and when the power kicks in it will hit hard! i ran 40% punch and some throttle curve and from a roll with 18-54 it wheelies no problem. with my modified merv with too hard of settings when the power hits it will either flip or spin the tires at any speed.
    with the steel spur make sure you run hardened steel pinions plastic spur is preferred because it's an inexpensive weak link .better to waste a plastic spur than the driveline or transmision . make sure to set the slipper properly

  6. #6
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    thanks guys, If any more input please dont hold back

    Everytime a friend of mine tried using a metal pinion with a plastic spur he would just rip all the teeth off the spur everytime
    I'm pretty sure we had the mesh correct but maybe the pitch was off ?
    which metal and plastic spure can be used ?

  7. #7
    RC Turnbuckle Jr. 87 GN's Avatar
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    .8 mod Pinion Gear with 5mm Bore (32 pitch)
    came with your truck if it was new. 0.8-P/Pitch 54-T/Tooth Spur
    Would you go flip my truck back over??

  8. #8
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    yes it was but, I kept stripping spurs gears and not only me installing them but a friend that has been with the hobby for awhile r/c.. I'm wondering which pinion and spur will be good with the robinison raceing setup spur 60 or 65 t and pinion 11-28 t

  9. #9
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    then how to set the slipper so i can get maxium speed without the truck just flipping over !

  10. #10
    RC Turnbuckle Jr. 87 GN's Avatar
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    Slipper Clutch Break-In
    The E-Revo Brushless Edition’s slipper clutch requires a break-in procedure
    to ensure consistent operation with the extremely high power output of
    the included Castle Creations Mamba Monster brushless motor system. The
    slipper clutch has been adjusted to the correct initial setting for break-in.
    Follow these steps to ensure maximum performance and life from your
    slipper clutch:
    1. Make your first runs with the model using the stock gearing and 6- or
    7-cell NiMH packs, or 2S LiPo packs.
    2. Drive normally. The slipper clutch should slip momentarily when
    accelerating aggressively on high-traction surfaces (you will hear a
    whirring sound when the slipper clutch allows the spur gear to slip).
    3. If excessive slippage is noticed (slipping that lasts for more than 3
    seconds under hard acceleration), or the slipper clutch slips anytime
    the throttle is applied at any lever, stop driving immediately. Let the
    slipper clutch cool for 10-15 minutes. When the clutch is cool, test-drive
    the vehicle again. If you still experience excessive slippage, allow the
    slipper to cool once more, then tighten the slipper nut turn (turn the
    nut clockwise) and repeat the break-in process. Do not adjust the slipper
    clutch before it has cooled.
    4. Continue to run the vehicle and monitor slipper clutch performance as
    noted above, and readjust if necessary. When the run is complete, the
    slipper should be fully broken in.
    After break-in, the slipper clutch is ready for any type of driving, with any
    batteries up to 6S Lipo. Set the slipper clutch so it only slips for a moment
    (if at all) under hard acceleration in high-traction conditions. If excessive
    slippage is noticed, stop driving immediately. Continuing to drive with a
    loose slipper will cause damage to the slipper unit. You must let the slipper
    cool down to ambient temperature before tightening the slipper nut and
    resuming driving.

    http://traxxas.com/sites/default/fil...KC1491-R00.pdf
    Would you go flip my truck back over??

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