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Old 11-29-2006, 04:42 PM   #1
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Default recent electric convert needs advice

after many weekends spent with my revo 3.3, i've decided to make the move to electric. constantly retuning turned from being a one-time chore to being a constant annoyance. "idles high, running to rich, damn..engine just cut off, turn this..tweak that, quarter turn...crap...was that a quarter turn?!?"

i recently purchased a rustler with the new xl-5 esc (to cure my curiousity on electrics). after a weekend, i've been surprisingly pleased with the stock performance, worry-free start up, etc. these past couple of days, i was looking to upgrade my rusty with a new motor, esc, turnbuckles, cvds, and shocks. after looking at the price tag, upgrades, and the stock rusty, i just couldn't bring myself to upgrade the car.

i just bought a team associate rc10t4 kit (with the factory team "bling") that had all the upgrades i had in mind. it will still need a motor, esc, and servo...so i guess i was hoping you all could offer some suggestions.

i am leaning towards the mamba max 4600, mamba max 5700, or the novak super sport plus 8.5. i'd like to stay around the 220 price range, any suggestions, opinions are welcome!

as far as the servo, i'm not sure what would offer the best balance of torque and value. obviously, leaning towards a metal gear.

any advice, opinions, suggestions?
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Old 11-30-2006, 11:43 AM   #2
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I put the Mamba Max/5700 in my MF2 and it was simply ballistic. Almost too fast for racing. I had to dial out 20% of my throttle endpoint to keep the thing on the track. The 4600 might be a better choice for a truck.
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Old 11-30-2006, 05:35 PM   #3
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Quote:
Originally Posted by Paul_67
I put the Mamba Max/5700 in my MF2 and it was simply ballistic. Almost too fast for racing. I had to dial out 20% of my throttle endpoint to keep the thing on the track. The 4600 might be a better choice for a truck.
were you running lipos or 6/7 cell nimh? i have to fight that "more power" urge!
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Old 11-30-2006, 06:14 PM   #4
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Do you plan on racing? I run a Novak GTB 7.5 system in my T4 and it has plenty of power for racing. As for the servo I would suggest at least 100oz of torque. I personally run a KO propo 2123 which is by far the best servo I have ever used but they come with a hefty price tag.
If you are looking at the novak I would suggest the GTB over the ss+ I have owned both and the GTB has alot smoother of a power band. I have not tried the Mamba system so I cannot comment on that esc.
Also if you plan on racing check out what the local guys are running at the track and go with that.
I used to race gas so I feel your pain when it comes to the tunning part.
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Old 11-30-2006, 07:14 PM   #5
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A decent budget servo would be the JR Z590M. My son runs one in his T4 (stock class) and its just fine. We also run them in our B4s. If you want to upgrade from the Z590M, a Futaba S9402, Futaba S9405, Airtronics 94357 are all real good servos along with the KO mentioned above - Of course the price tag goes up with these as well.
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Old 11-30-2006, 07:23 PM   #6
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I agree with going for the GTB over the SS if going Novak. Running a 6.5 in a T4 and a 7.5 in a XXXT. Very smooth and never a problem. Can't comment on the Mamba either.
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Old 12-02-2006, 08:34 PM   #7
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so i think i managed to sort this all out.

brushless motor/esc: mamba max 4600
servo: airtronics 94357Z

the tranny is 2.60:1, 2.2 tire diameter, 87 on the spur, and 24 on the pinion. this gives me a rollout ratio of 0.733.

should i get a smaller pinion gear? will i be running this too hot?!?
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Old 12-02-2006, 08:42 PM   #8
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i am thinking that a range between 15-18 would offer a fair balance of acceleration and performance, while keeping the motor cool.

what do you all think?
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Old 12-02-2006, 09:22 PM   #9
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The main pinions I use on my T4 are a 18-22. When I ran brushed I ended up using a 19 most all the time. Running a gtb/6.5 now and I generally am at a 22 with the throttle epa limited so it is smooth on the bottom and not insane on the top end.
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Old 12-03-2006, 12:23 AM   #10
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How is the heat of the motor when using the 22t pinion? I've been using a 18t-19t on my 7.5.
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Old 12-03-2006, 01:28 AM   #11
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I really like the Hitec 645 servo, plenty of uumph, fast enough, and they have a great warranty, and are priced very reasonable ($35-$47). I just put a sphere competition speed control into my t4, but have not made the switch to brushless motors, yet, I am however thinking of getting a Velociti 7.5 for it.
HTH
Rod

Last edited by gatermaxx; 12-04-2006 at 11:42 AM.
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Old 12-03-2006, 09:23 AM   #12
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Quote:
Originally Posted by trashedmaxx
How is the heat of the motor when using the 22t pinion? I've been using a 18t-19t on my 7.5.
I just went and looked and I guess it's a 21 I end up running alot on our somewhat slick track to control spinning. As for motor heat, I limit the throttle epa down significantly and the motor just gets a little warm is all since it never reaches a true full throttle. The last track I ran at was a big 1/8 scale track and I ran a 20 tooth pinion with epa limited a little and it was just warm again. I would rather have a 7.5 instead of the 6.5
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Old 12-04-2006, 05:58 AM   #13
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Quote:
Originally Posted by monocog
were you running lipos or 6/7 cell nimh? i have to fight that "more power" urge!
I was using 6 cell 4200's with a 19t pinion. Heat was not a problem at all.
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Old 12-04-2006, 11:27 AM   #14
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Default Thank You All!!

i would like to thank everyone for all their advice, suggestions, and opinions! i purchased the mamba max 4600v, 18t pinion, and the airtronics erg vr servo.

the "kit route" was more expensive than the "rtr route, but i now have a better understanding of the vehicle and a higher quality/performance car.
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Old 12-05-2006, 07:58 AM   #15
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For the servo, I run Futaba 9451 in everything. Plenty of torque, and too fast. On my 4wd I have the speed dialed down to 68%, but I would rather have to fast and set it up where I want it, than to have one to slow. for $75 it is a great servo and has a 1 yr warranty.
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