RC India

RC Models => Cars => Topic started by: ritvik93 on December 31, 2010, 01:54:05 PM



Title: Reverse does not work all the time
Post by: ritvik93 on December 31, 2010, 01:54:05 PM

im new in the rc club and i bought a maisto monster drift car just to see if i like rc cars....well i do......
but its giving me a problem,,,,it randomly doesnt reverse when i want it to......sometimes it works flawlessly and then suddenly it doesnt reverse.........
plus i want to know where can i buy a beginner hobby grade car in chandigarh or some trusted online site!
tq in advance


Title: Re: Reverse does not work all the time
Post by: anwar on December 31, 2010, 01:58:51 PM
Hi Ritvik... welcome to RC India :)

I split out the topic, since it is a unique issue and unrelated to the thread you posted it on.  Hopefully someone here will be able to figure out what is going on.

You should post much more detail though, like what car (brand and model) it is, what radio you are using etc. If it is toy grade, then it would not be surprising, as compared to hobby grade.


Title: Re: Reverse does not work all the time
Post by: ritvik93 on December 31, 2010, 02:01:51 PM
hey thanks for splitting the topic

um well its a maisto monster drift car......its awd....and i guess its something in the middle of toy grade and hobby grade !?
p.s. if you want i can post some pics of the chip and the car


Title: Re: Reverse does not work all the time
Post by: asinghatiya on December 31, 2010, 02:04:45 PM
Hi Ritvik, same problem with my son's maisto Hummer and one more rc car, actually this I guess is a Radio's range issue. Just notice it happened mainly when you move ahead more than a certain distance, you will face this issue and uniquely only with reverse.  :headscratch:

Btw welcome to RC India.  :)


Title: Re: Reverse does not work all the time
Post by: gokemidoro on December 31, 2010, 02:25:24 PM
ritvik93,

Firstly, I want to welcome you, though I do not live in India!

Your Maisto is indeed a toy-grade RC. I had a chance to look up some forums, and your model seems to have issues not just with reverse, but steering, as well. I'm skeptical at this point, that your model even has what is known as
proportional steering, which means the steering moves a corresponding amount that you move the steering wheel on your transmitter. Non- proportional steering will go immediately to full right or left, with the slightest amount of input at the transmitter's steering wheel.
Your reverse problem is traced to a bad connection on the circuit board. There is nothing that can be done about it, except to replace it with a hobby-grade RC.

Sorry for the bad news, but I feel you should know what you are up against, and that it would be in your best interest to go hobby-grade, as soon as you are able. Don't let this episode sour you on RC as a whole, as hobby-grade is a very satisfying pastime, and it does allow you to "customize" your car, truck, boat, plane, heli, or what ever RC you decide to do! ;D

Good luck in future, with whatever you decide! It is my hope you will become another hobby-grade devotee! :thumbsup:


Title: Re: Reverse does not work all the time
Post by: traxxrc1 on December 31, 2010, 03:56:02 PM
i agree with gokemidoro, if its a toy, then its a malfunctioning, if its hobby grade, then it could be the overheat protection(as in T Tr electric cars) where you cant reverse the car immediately after forward running to prevent excessive current draw by the motor.


Title: Re: Reverse does not work all the time
Post by: puneet on December 31, 2010, 04:52:13 PM
hi

i am not very sure if this problem is restricted to only toy grade cars,my HPI sprint to sport car also gives the same problem

till now i am clue less about the solution.

regards

puneet


Title: Re: Reverse does not work all the time
Post by: ritvik93 on December 31, 2010, 04:52:36 PM
@asinghatiya : Thanks for the info!! Looks like im not the only one with this issue then :P
@gokemidoro : im also thinking of upgrading a a hobby grade car......the thing is i cant find any indian site to buy one or some local hobby store where i can go.............:/
@traxxrc: hmmm.....can you suggest me some site where i can buy an hobby grade rc car for beginners...which dont have $100 0.o as shipping charges to india or some indian site!


Title: Re: Reverse does not work all the time
Post by: traxxrc1 on December 31, 2010, 05:55:08 PM
Tell of your final budget, i have different ranges of car to offer you at good prices, atleast cheapest in india


Title: Re: Reverse does not work all the time
Post by: gokemidoro on December 31, 2010, 06:07:27 PM
There you go, ritvik93!!

traxxrc1 isn't a forum hero for nothing!!  :thumbsup: :thumbsup: :thumbsup:

Steer him to something nice, traxx!! ;D


Title: Re: Reverse does not work all the time
Post by: traxxrc1 on December 31, 2010, 09:46:40 PM
Sure gokemidoro, i will try offering him the best, thanks


Title: Re: Reverse does not work all the time
Post by: gokemidoro on January 01, 2011, 03:09:44 AM
puneet,

You will be seeing some mods and useful info on HPI Sprint 2's in Rocky Balboa's thread, keep an eye out- there might be something in there you can use, or something that will answer a question you may have!!

Stay tuned!!! :thumbsup:


Title: Re: Reverse does not work all the time
Post by: roopeshkrishna on August 12, 2011, 09:30:36 AM
Ritvik..i accidentally came this post, and please try these attempts once before giving up..stay calm, and open the outer cover(body), carefully. take a piece of paper and a pen, and notice the size of screws, if there any differences in screw size and length.if so, can mark it with a marker pen. examine, inside for, the FWD and REV controls, means , may be controlled by a simple proportional servo, actuating two switches, one for FWD, and REV, or may be pulse based ESC, or may be CPU based ESC.in a conventional servo based switching , there must be a delay circuit, or a braking circuit, to avoid over current surge, in a sudden motor stopping, or reversing.this will neutralize the reverse mod, in a sudden reverse application. you can overcome this by adding two high amp read switches, instead of company one. make sure all connecting links are in its feasible working lengths, and do any adjustments if it needs.its easy and inexpensive.if it is equipped with a PWM, or CPU based ESC, the problem may be due to radio signal loss, or weak signal.you can overcome this problem, easily, but, t of all make sure what is the working frequency of the car. if it in to MGz, fix a simple FM or PPM or a PCM booster just before your antenna. its a simple circuit, can wire on a piece of a card board.and sizes about a 50 paisa coin. works nicely from 6 volts to 16 volts. and if it is in to GHZ, can add a SST driver in your car. before this radio alteration, check the transmission strength, with a field meter, and make sure it is in with feasible range. you can also increase the range of the TX by changing its final stage biasing.