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  1. #1
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    Upgrades Needed for Brushless?

    I'm thinking of trading my Rustler for a 4-Tec and putting the MM5700 in. What mods need to be done to a stock 4-Tec in order to handle brushless power?

  2. #2
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    I have a Novak 4.5 system in mine and I haven't needed anything as of yet. The only thing that I've done so far is upgraded to the aluminum stub axle carriers (just because) and I've been conservative with my gearing. There are alot of responses to this question on here if you look at some of the other topics. From what I have read, the priority upgrades are: foam bumper, gear differentials, and plenty of tires. I hope this helps.

  3. #3
    RC Turnbuckle Jr.
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    The 4.5 is more powerful than a 5700, correct? If so this is promising for the 4-Tec, I'd like to have one as well (wouldn't trade one of my Rustlers for it, though) with a MM in it. Seeing how incredible the 5700 is in a Rustler I'd love to see it making a 4-tec move!

  4. #4
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    I'm keeping the Rustler in the end. I'm gonna try the 5700 in the Tec that I bought and if I like it, I might get another Mamba!

  5. #5
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    Your going to want to keep extra parts on hand. Get the RPM rear shock tower to.
    No one ever really dies.

  6. #6
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    only problem i had with puttin my mamba5700 in my tec was a laggin front diff i was getting 70/30 power ratio 70 being in the rear. it moves pretty good but im gettin some bad interference and my servo is out of wack.
    fight for what you believe, no matter the risk

  7. #7
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    Anyone know what kind of gearing I should use with the 5700?
    I was thinking something like 25/84.
    Is that about right?
    I have 12, 15, 17, 19, 21, 23, and 25 tooth pinions, along with 78, 84, and 90 tooth spurs.

  8. #8
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    i was using 32/84 i believe ran kinda good but i would say like 23 would be better.
    fight for what you believe, no matter the risk

  9. #9
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    32/84? That seems kind of high for the 5700. I think I'll just try 25/84.
    BTW, what kind of speeds did you get with your 5700, and on what batteries?

  10. #10
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    Quote Originally Posted by shook2000
    32/84? That seems kind of high for the 5700. I think I'll just try 25/84.
    BTW, what kind of speeds did you get with your 5700, and on what batteries?
    on the 4tec the output ratio is 2.13 on the rustler/pede/bandit its 2.73 so you can gear the 4tec higer.
    i was getting about 40-45mph on a 6cell gp3300 with 32/84 gearing running kinda hot but that was only 2 or 3 high speed runs before my servo started going crazy.

    i get about 38mph on a 6cell gp3300 and about 55-60 with 2 gp3300s in a series that with my rustler tho.
    fight for what you believe, no matter the risk

  11. #11
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    Hmmm, I'm thinking I'm gonna have to try the 4-Tec on 12 cells sometimes...

  12. #12
    RC Turnbuckle Jr.
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    Quote Originally Posted by R_C_Fan
    gear differentials
    sorry to be dumb where do you get those? off a nitro 4 tec? thanks
    I memorized pi to 200 digits!

  13. #13
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    Go to my website at www.geocities.com/the_tec_alliance to learn about the nitro gear diff upgrade.

    To be honest, the differentials were the first thing to die on my 4-tec. And that was with a stock motor. The metal they use for the adjustment screw is really soft and strips easily. Going to gear diffs was the best upgrade I have done yet.
    All side view mirrors should say "Objects in mirror are LOSING!"

  14. #14
    RC Turnbuckle Jr.
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    Quote Originally Posted by NitroRustlerDriver
    Go to my website at www.geocities.com/the_tec_alliance to learn about the nitro gear diff upgrade.

    To be honest, the differentials were the first thing to die on my 4-tec. And that was with a stock motor. The metal they use for the adjustment screw is really soft and strips easily. Going to gear diffs was the best upgrade I have done yet.
    do you have any pictures of how to? a picture is worth 1000 words! so its not just a drop in
    I memorized pi to 200 digits!

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