motor and esc

[Rckid97]

i love the slash 4x4 on stock set up but i feel like it is under powered a bit so i would like to upgrade to a better system but now sure what is the best bang for my buck?

[crusey]

http://www.funshobby.com/index.php/p...+SHIPPING.html

Or similar

Cheers

[Rckid97]

do you run this combo? does anyone else?

[BrabusBen]

I do, on Cruseys advice and it's great, reliable, VERY powerful, good on 2s/3s and waterproof - by far best bang for buck - cost me less than £85 (around $100-110 depending on ex.rates) need to make sure your lipos are high enough C and mAh rated as this set up draws ALOT of power

[Rckid97]

i have a 25c 5800 2s? and is the combo the best or the motor and a diff esc?

[BrabusBen]

No, the esc is perfect but the motor has a high amp draw - Cruseys measured it at around 140A peaks if I remember correctly. I use my old 2S 4000mAh 25C and they are holding up well, but 3s is a 40C 5000mAh minimum. Your 2S batteries will be pushed to their limit (25x5.8 = 145A theoretical delivery) but should just hold up. The lower kV motors have a lower peak current draw. The 401, as I mentioned draws max 140 ish but the box says they recommend an esc that can provide 120A continuous, so the 140A is a peak draw - the esc can take that (has burst draw max of 720A for 10seconds at a time). If you are worried you could get a different motor with a lower current draw but personally I reckon this is about the best set up you could get for the money and worth taking the chance

My esc never gets above about 90-100F compared with 160F on the motor - so its coping no problems, my batteries don't even get warm.

My batteries with their 25x4=100A max delivery should die fairly soon but I use them as back up batteries and I've got more than 30 runs out of each or them with no problems, when they go I'll just get higher rated ones then ;0)

[Rckid97]

so basically they will work but they will be pushed to the limit?

if you were to suggest another motor what would you say? this is only if im putting my batts at risk

[BrabusBen]

Possibly one of the castles - but needs to be sensor less - In the uk castle is just too expensive - a 3800 motor costs as much as two complete WP-SC8 and tenshock 3400 sc systems - all other decent motors are around the same price so I didn't consider others. I'll have to leave that answer to the USA guys as I have never tried another motor (although the esc, on it's own, gave the stock motor a nice boost and I've read of many people sticking with stock motor - it does tend to get a bit warm tho) - I do think you will be ok with those batts tho - just no guarantee ;0)

[Rckid97]

alright i have no heat probs! i run this http://traxxas.com/forums/showthread...a-heatsink-fan

and what is the difference between sensored and sensorless

[BrabusBen]

alright i have no heat probs! i run this http://traxxas.com/forums/showthread...a-heatsink-fan

and what is the difference between sensored and sensorless

Mmmmm difference between sensor ed and sensor less - I'm not entirely sure - sensored use a feedback from motor to esc to improve timing, I believe, and makes the motor much smoother at low speeds - not sure of true performance advantages tho, sensor less has no feedback and is always a bit rough at very low speeds (stock is sensor less)

I'd have to rely, again, on those more experienced than me to answer this question, but overall I don't think it makes that much difference, and, I believe, sensor less is preferred for racing - but I stand to be corrected if I'm wrong (which I may well be) ;0)

[Rckid97]

alright i think i will first get the esc and see if performance boosts then i will throw the motor on also! thanks for the help and what kind of speed increase am i looking at

[BrabusBen]

Few MPH, that's all, but the torque is amazing. With the stock motor you can't really gear it much higher because it WILL overheat, with the better motor you can gear higher - that's what gives you the speed - price up the two separate, if there is a big saving on buying the package I'd go for that - I bought separately - ordered the tenshock after only 2 runs on the stock motor because I wanted to get the most out of the awesome esc - you are unlikely to damage the batteries, just be running at the top end of their performance. If they are good quality lipos and not some junk Chinese ones (usually false C and mAh ratings) there should be no problems.

[Rckid97]

they are hobby people premiums? i think there good

[Rckid97]

also what kv should i get the motor in? 5200, 4600, 4000, 3500

[gordongekko]

for 3s lipo, go with 3500kv. for 2s, 4000 or 4600!!!!

[Rckid97]

well i have 2s but plan on running 3s in the near future

[Rckid97]

so its between 3500 and 4000?

[gordongekko]

go with the 3500... you can change you gearing to have same speed than the 4000... but the 4000, with 3s, will bring you more than 40 000 rpm, wich is, i think, a little bit high for a bl motor (i think cc motor can go up to 60 000, but cc is high end motor, with a chinese motor, i suggest to keep it below 40 000)

but i'm still experimenting with mine ( 4000 kv...it's a toro motor, but it's the same). i'm geared with 18t pinion... speed is where i want to be (i have big tire on mine... 2.8 trencher on buggy rim) but motor is hot... i should have gone with 3500 kv and running 3s... i will try 3s with smaller gearing (13t pinion) but i am waiting on a ir thermo i just ordered to keep track of temp.

anyway, good luck.. i'm sure someone with more experience with tenshock/toro motor can give you a better angle to wich motor you should get

[Rckid97]

i think i will go wit 350 because i do plan on running a 3s soone! and with this new motor will cvds need to be upgraded?

[Rckid97]

3500* not 350

[Rckid97]

just saw the toro and sc 401 combo is that better

[akesj1]

just a suggestion, but anyone one that installed the MMM/2650 Castle system has been pleasently impressed. It will 100% outperform a stk 3s system when geared proper on 2s , it will run cool with up to 4s batteries.

anyone that tries my kids setup 2s, 22/54 thinks its at least a 3s , 4 or 5 buddies have switched and are amazed

[Rckid97]

i would like to get that system but its so expensive! maybe i will try to find it used cause i was a little sketchy about getting a Chinese motor combo

[Rckid97]

and do i get the mamba monster esc or mamba max pro?

[vxlrocket]

and do i get the mamba monster esc or mamba max pro?

either is fine. I use both...i actually prefer the mmp.

[Carbonmaxx]

I completely agree with Akesj1, I'm super happy with mamba monster 2650 combo. I run mine on 3s and the power is just astonishing. You can pick up a used mamba monster combo on eBay and have it shipped to the UK to save some money. You will be extremely happy with that setup if you think the velineon is not providing enough power, also you can also waterproof the mamba monster like I did.....good luck with what you choose.

[Rckid97]

Alright rocket I will go with mmp esc and will a 2s 25c5800 Mah provide enough power to even show a hint of its power?

[El Sob]

You cannot forget about the Castle 2400 system! I have it in both of my trucks. It is a great system and runs cool if geared correctly. I have it geared higher in one truck for speed runs and I am extremely happy. I do suggest the MMP for your esc. Of is very durable and works great! It will run almost any motor well.

[CodenameTRX1]

Hey guyzz... I run a stock slash4x4 with 11t pinion. If I want to run 11.1 lipo,can I stay with this gear? Also, do I need cooling fan and or heat sinks?

[Rckid97]

El sob what is the difference between 2500 and 2650? Whichbwill run best on 2s

[Rckid97]

which will run best on 2s*

[crusey]

Assume you mean the 1415 2400kv and 1512 2650kv ?

Neither are suited for running on 2s

Cheers

[Rckid97]

what about 2 2s? and how do i run them together

[crusey]

Either of those motors will work fine on 4s

You would connect the two packs using a series adapter

Does not really sound like you know what you want

Cheers

[vxlrocket]

Rckid97, try to think about it this way...there are 2 ways to get where you want to go.

1) higher kv rating (rpm per 4.20V) with less voltage. this means less battery, less weight, a little less torque, and generally more heat. these are the 3500kv motors on up. So if you ran a 3800 or 4000kv on up, you could run them with a 2S and always be faster than the velineon was with the same voltage.

2) lower kv rating (rpm per 4.20V) with more voltage. this means you have more weight, more power because generally the lower kv motors use a larger can, and are more effecient to run on more voltage. it also means that you can gear them higher as a result.
so...as a rule of thumb if you wanna find out how fast you're gonna be in regards to a velineon do this equasion.

(kv) x (v) = rpm so...we can say a 3500 x 12.6V (a 3S lipo)=44100rpm. now, take that same equasion and plug in 2400. 2400x16.8(4S)=40320rpm. so, now we are pretty close in rpm. now we factor in the power difference and the ability to gear significantly higher on the 2400, and now we have a motor that not only runs cooler, but has significantly more power....and now, will have more top end because of how high you can gear it. ...that in a nutshell is the question that you need to answer.

you can go just as fast with a higher kv motor, but you'll have to watch your gearing more. the lower kv motor requires more voltage but that's easy enough to take care of. castle sells the series adapters in deans, and traxxas might in traxxas style connectors...not sure, but they are easy to make.

also, when you're talking about the size difference in the 1406 (velineon size and castle cm-36 sizes) to 1410 (3800size ) to 1415,(2400 size) the 1512(2650) and the 1515(2200) the power difference is significant..always keep that in mind when determining what kind of motor you're deceiding.

[CodenameTRX1]

Hey.. Vxlrocket, dude , u sound like u could write a book on this stuff. That's awesome. I got a real easy one for ya. I run a stock slash4x4 with an 11t pinion. Am I safe to run 11.1v lipo without any cooling hardware? And also, is that pinion ok? Thanx

[vxlrocket]

Hey.. Vxlrocket, dude , u sound like u could write a book on this stuff. That's awesome. I got a real easy one for ya. I run a stock slash4x4 with an 11t pinion. Am I safe to run 11.1v lipo without any cooling hardware? And also, is that pinion ok? Thanx

it all depends on where you live and how heavy you are on your trigger and also what you like to drive on...street? grass? dirt? i don't know if i could run a 3S on a velineon motor in 100 degree heat even with an 11t pinion and not have some sort of heat issue after or near a full pack. my best advise for you is to purchase a temperature gauge and just bring it in every 5-7 minutes to get a reading. rule of thumb is you never want your motor to exceed 200 degrees. ideal is to keep it under 180.

[CodenameTRX1]

Thanx. I'm around Houston Tx. So it's hot durring the summer. I try my best to bash in the dirt. We got a homemade track and I don't like grass. I'll get a temp gun, sounds great.

[Rckid97]

i think for now im gunna get the tenshock combo in 4000? but later in like a couple months get the mmp and 2400, or 2650

[MITCH316]

Interesting post...loads of valuable information in here.