improving performance of a cheap rc car in low budget

Started by sharmasumit668, September 27, 2010, 11:23:10 PM

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sharmasumit668

Hi! I am Sam(Sumit) from Faridabad......
I have bought a cheap Rs. 500 rc electric car and I want to improve its performance.
I wish to increase it's speed(i want it very very fast) and want to drift.
how much would a brushless motor cost and where can i buy it near my home?
how much battery power would i need to increase its speed.
i don't have much knowledge ,so please..."no technical names"
my budget is Rs. 700 ....
please tell in detail.......
you can contact me on
sharmasumit668(at)gmail(dot)com

anwar

Welcome to RC India :)

It would be really surprising if you found a brushless motors and the brushless speed controller (ESC) to go with it for that budget.  Plus, motors are chosen based on purpose and size of the vehicle, so without such details, no one can even make guesses.

Also, it seems that you have posted this question within 20 minutes of registering here.  If you take bit of time and go through our "Gems" list, or just search the forum for RC shops, you will find our "mega list of RC shops", which would be useful to you.
Hangar : Please see my introduction.
RC India forum and me : About this forum.

traxxrc1

#2
first thing -
your vehicle is a toy grade. so you cannot upgraade it with ease as it is nearly impossible to find a motor of the that size.
brushless motor will cost at least 1500 rupees and esc for atleast 1800,
so noway near your budget
even then if u put a brushless motor init your cars gears and all other parts will come out of the body.
also u do anything but you wont be able to hit even 20kmph with any toygrade.
what i can suggest you is get some AA size NiMh and make your own battery pack to provide better current.(use high quality one like from SONY made for digi cameras), because your car might have come with cheap quality NiCd with extremely low capacity
this battery will cost around 500 rupees.

one more thing -
if you have good knowledge about electronics try designing a circuit of your own with a higher voltage capability and use it with your same stock motor.(most probably your motor can handle upto 6V easily).

think of getting a new motor only after you have increased the voltage with a  new circuit

dont put a ver high voltage battery in it(7.2/8.4V) as your  circuit will burn.

your car might be using a 4 cell battery , what i can say is that most probably your car can handle upto 5 cell battery(6V). that would increase performance a little
some special tips that wont cost you a buck---
*lubricate your cars gears with a engine oil
*reduce the weight of your car by removing extra show parts
*breakin your motor---see this post
    http://www.rcindia.org/cars/electric-motor-breakin-guide/
*if your tires have spike or some irregularities, smoothen them up, or get new tires which are   plain.
*shift your battery from undermount to the front part of your car, this will make it drift nicely
* Get a pinion gear of your motor's shaft size with more no. of teeths than the one you are using right now.
this can greatly increase the speed by compromising with accelereation
*properly wire your circuit, replace thin wires on the circuit with thick wires
<a properly wired brushed motor can outperform a poorly wired brushless motor>

BY ALL THESE STEPS YOU CAN SPEDEN UP YOUR CAR BY 20-30%

i personnaly found these trick and made by first toy monster truck hit around 20kmph
look, there are no special controls for drifting a hobby grade vehicle as well, they are drifted by the massive acceleration they have and the slick tyres which provide a lot less friction

Low friction + High Power = drift
burnout never possible with that quality of car
rear part, bottom(probably white coloured disc with tooths/spikes)
just where the motor head<pinion gear> is situated
noway for that,
either you can have high speed or more torque,

only way is that get a high quality motor
high quality can be a brushed motor with a better winding
now it depends on where u live, most electronics market will have motor but it depends whether your car has a better motor or the new one would be better, in most cases they both will be same quality chinese motors.

high quality brushed motors are RC car brushed motors. they are much efficient than regular motors.
try findind if u can get one of your size and voltage requiremnts. a brushed one will cost around Rs.700 while a brushless for around Rs.1600.
however almost all rc motor are designed for 7.2V .
they would not perform very good at your cars voltage 
i dont know about faridabad, i live in ghaziabad and can tell u about delhi,
buy it online if you really want to
one thing i can tell you is that instead of spending your money here,

SAVE,

and buy a used electric vehicle(this is the cheapest)

i have a gas vehicle for sale<a bit expensive>
would you like to buy it??
its pics are there in cars section in the post "some more pics of my collection"<black one>
My Introduction-
I am 17 Years old, born in bristol(UK), lived 2 years in US (San Antonio,texas), then shifted to homecountry, and here from last 12 years.
Right now i am studying in class 12
Have been in this hobby from childhood since i was born in an environment in which you can find a RC car every next door.
Whatever i know is my SELF GAINED EXPERIENCE 

When you want to buy batteries, go to reliance digital, ask them for camera cells of NiMh type(AA size), each of 1.2V, and connect them in series in desierd no.(see your science book to know about series connection).
they would be rechargeable
and ya KODAK sells a pack for 500 rupees wherein they have 4 AA NiMh rechargeable cells with a charger included, try finding it

try upgrading your car one by one, step after step
with the new battery first of all your runtime will incerase, also it will increase the speed by 3-5kmph.

dont even think to put a 7.2V pack.
are you running your car on dry cells? how many?
if you buy from local electronics shops---
take the motor out of the car, go to the shop and ask him to give you a motor of same size and voltage but some better rpm (he probably might know its rpm), fix the capacitor from the old motor to the new motor(it is a brown color disc b/w the 2 terminals of your motor) as the new motor might not have one.

If you buy from a RC hobby shop-
tell him the dimension of your motor, and take the one he gives you,he might ask you about the turns of motor that you require, try getting the highest turn motor because thats what your car circuit can support, lower turn=faster speed but your cars' circuit will burn up with that motor.
the rc motor will come with every thing like the capacitor presoldered
i can t tell you about a new battery pack untill you tell me what is the voltage of the car rght now.
I STILL SUGGEST TRY SAVING SOME MONEY AND BUY A USED ELECTRIC FOR ABOUT 4000

this will do atleast 30kmph,will be highly upgradeable, easy to do stunts and tricks, and will not look CHILDISH

I'll be back.

traxxrc1

even then if u put a brushless motor init your cars gears and all other parts will come out of the body.
also u do anything but you wont be able to hit even 20kmph with any toygrade.
what i can suggest you is get some AA size NiMh and make your own battery pack to provide better current.(use high quality one like from SONY made for digi cameras), because your car might have come with cheap quality NiCd with extremely low capacity
I'll be back.

traxxrc1

this battery will cost around 500 rupees.

one more thing -
if you have good knowledge about electronics try designing a circuit of your own with a higher voltage capability and use it with your same stock motor.(most probably your motor can handle upto 6V easily).

think of getting a new motor only after you have increased the voltage with a  new circuit

dont put a ver high voltage battery in it(7.2/8.4V) as your  circuit will burn.

your car might be using a 4 cell battery , what i can say is that most probably your car can handle upto 5 cell battery(6V). that would increase performance a little
I'll be back.

iamahuman

Even I started like this.My budget was 15k,beefed up to 25k after a lot of pleading with my dad.

A bl motor would kill your car.As Arpit said,the batteries seem to be the only way.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

some special tips that wont cost you a buck---
*lubricate your cars gears with a engine oil
*reduce the weight of your car by removing extra show parts
*breakin your motor---see this post
   http://www.rcindia.org/cars/electric-motor-breakin-guide/
*if your tires have spike or some irregularities, smoothen them up, or get new tires which are   plain.
*shift your battery from undermount to the front part of your car, this will make it drift nicely
* Get a pinion gear of your motor's shaft size with more no. of teeths than the one you are using right now.
this can greatly increase the speed by compromising with accelereation
*properly wire your circuit, replace thin wires on the circuit with thick wires
<a properly wired brushed motor can outperform a poorly wired brushless motor>

BY ALL THESE STEPS YOU CAN SPEDEN UP YOUR CAR BY 20-30%

i personnaly found these trick and made by first toy monster truck hit around 20kmph
I'll be back.

traxxrc1

hey gandhar, your initial budget was 15k mann, his is ".7k"
I'll be back.

traxxrc1

I'll be back.

iamahuman

should be getting it in 10 days or so.Will order it very soon.Waiting for traxxas guys to confirm that it is in stock.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

I'll be back.

sharmasumit668

buddy my tires are smooth but I don't know the technique of drifting.
I have only two controls on my remote......one for direction(left and right only) and forward and backward

sharmasumit668


traxxrc1

look, there are no special controls for drifting a hobby grade vehicle as well, they are drifted by the massive acceleration they have and the slick tyres which provide a lot less friction

Low friction + High Power = drift
I'll be back.

traxxrc1

I'll be back.

sharmasumit668

Quote from: arpitsingh4063 on September 28, 2010, 01:24:33 PM
some special tips that wont cost you a buck---
*lubricate your cars gears with a engine oil
*reduce the weight of your car by removing extra show parts
*breakin your motor---see this post
    http://www.rcindia.org/cars/electric-motor-breakin-guide/
*if your tires have spike or some irregularities, smoothen them up, or get new tires which are   plain.
*shift your battery from undermount to the front part of your car, this will make it drift nicely
* Get a pinion gear of your motor's shaft size with more no. of teeths than the one you are using right now.
this can greatly increase the speed by compromising with accelereation
*properly wire your circuit, replace thin wires on the circuit with thick wires
<a properly wired brushed motor can outperform a poorly wired brushless motor>

BY ALL THESE STEPS YOU CAN SPEDEN UP YOUR CAR BY 20-30%

i personnaly found these trick and made by first toy monster truck hit around 20kmph

where are the gears of the rc car..
any way to increase acceleration without compromising with top speed...?
any way to increase speed+acceleration ????

traxxrc1

rear part, bottom(probably white coloured disc with tooths/spikes)
just where the motor head<pinion gear> is situated
I'll be back.

traxxrc1

noway for that,
either you can have high speed or more torque,

only way is that get a high quality motor
I'll be back.

sharmasumit668

where can i get a high quality motor and how much will it cost..

sharmasumit668


traxxrc1

high quality can be a brushed motor with a better winding
I'll be back.

sharmasumit668

where can i get it and how will it cost...
how much will both a high quality brushed motor and brushless cost in Faridabad...and any nearby store?

traxxrc1

now it depends on where u live, most electronics market will have motor but it depends whether your car has a better motor or the new one would be better, in most cases they both will be same quality chinese motors.

high quality brushed motors are RC car brushed motors. they are much efficient than regular motors.
try findind if u can get one of your size and voltage requiremnts. a brushed one will cost around Rs.700 while a brushless for around Rs.1600.
however almost all rc motor are designed for 7.2V .
they would not perform very good at your cars voltage
I'll be back.

traxxrc1

i dont know about faridabad, i live in ghaziabad and can tell u about delhi,
buy it online if you really want to
I'll be back.

traxxrc1

one thing i can tell you is that instead of spending your money here,

SAVE,

and buy a used electric vehicle(this is the cheapest)

I'll be back.