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Thread: dynamite Lipo's

  1. #1
    RC Racer
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    dynamite Lipo's

    I got some dynamite speedpack 5200mah 7.2v 2s 50c batterys.Anyone ever trid them?What kind of top speeds can I expect with stock gearing with these?

  2. #2
    RC Turnbuckle Jr. 87 GN's Avatar
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    Middle to high 30's, do you have the 54 spur? That should get it into the 40's easy...
    Would you go flip my truck back over??

  3. #3
    RC Racer
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    My ERBE is in the mail on the way too me.Does it come with an extra spur?Man high 30's aint much at all.I figured snce it had a mid C rating I would get up to at least 40,cause man........,the bats were $100 a piece.

  4. #4
    RC Turnbuckle Jr. 87 GN's Avatar
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    you paid.....gulp..
    yes it comes with a 54 spur, & go buy a 21 pinion & you are low 50 mph.. just watch your temps.

    change the last two ## in the p/n for the tooth count...

    Part Number: RRP8721
    Manufacturer: Robinson Racing
    Hardened .8 mod 21T Pinion Gear with 5mm Bore (32 pitch)


    (mah x c rating / 1000 = amps),

    The more amps the better / minimun of 120 amps.

    The ESC will only draw the amount of amps it needs.

    Higher the mAh the longer the runtime.
    For brushless systems 8000 mAh about 45 min & a 5000 mAh about 30 min.
    Times are longer for brushed systems.

    Batts in series double the voltage:
    2x 2s 20c 5000mah = 4s 20c 5000mah

    Batts in parallel double the mah capacity:
    2x 2s 20c 5000mah = 2s 20c 10,000mah.

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

    Motor ~ 180/190*F maximum, ideally 140/160*F, temps can be 10* higher inside the motor
    ESC ~ pretty much same temps / Fan comes on @ 150*F
    Lipo's ~ 140*F max, ideally 100/120*F
    Last edited by 87 GN; 02-11-2012 at 05:53 PM.
    Would you go flip my truck back over??

  5. #5
    RC Racer
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    Thats a little relief.......thank God.I found a lhs opened on sunday.I hope they carry that spur in stock.I can deal with low 50's for top speed.Thanks!!!!!

  6. #6
    RC Racer
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    whoops.I meant to say pinion.So the pinion is all I need and Im set right?

  7. #7
    RC Turnbuckle Jr. 87 GN's Avatar
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    Nope if you don't have Castle Link you really need it to set the LVC 3.4v per cell..
    & a few other programs if you want to change punch control..etc....


    http://traxxas.com/forums/showthread...stleLink-Guide
    Would you go flip my truck back over??

  8. #8
    RC Racer
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    Well its a good thing I ordered the castle link when I ordered my ERBE.Being that I did and if I do what you say is needed to be done I should be set I hope.

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