Need some advice regards a 12v to 24v ride-on conversion plz

Need some advice regards a 12v to 24v ride-on conversion plz

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Wezaa

Original Poster:

3 posts

86 months

Thursday 7th September 2017
quotequote all
Hi, friend bought my son a cheap Chinese ride-on.
It has a Bluetooth remote for parental control too.
It is 12v with 2x 6v batteries.

I have replaced all of the batteries, replacing with 4x 6v 5ah batteries. (I went with 4x 6v due to the space available to put the batteries, could fit 2x 12v into the car.)

I wired it all up and it was great, for about 10 mins, then a pop and an electrical burning smell.
Disconnected the batteries and took a look, the control board is toast, a resistor popped and the board is burnt. It is one of these boards
It's a "Wellye Children's electric toy car 2.4G Bluetooth remote control, reveiver with smooth start function 12V" (I have found and ordered a replacement from China)



There is a 10a fuse that is between the positive (red) connector of the battery and the positive connection to this controller box. Yet the box still fried before the fuse did. I guess that means the voltage was too much for the control box?

Could anyone please reccomend a suitable 24v replacement that would work for this car? It has 3x 12v motors. One of each back wheel for forward/reverse and one connected to the steering column for steering via the Bluetooth parental remote.
I would still like to have a working remote for this if possible.

Or is there a way I can limit the voltage to the board but have the full 24v going to the motors?

Or maybe a way I can use a 24v board for say an electric scooter and also add a parental control unit?

Thank you.

lufbramatt

5,424 posts

141 months

Thursday 7th September 2017
quotequote all
Not suprized it went pop putting double the voltage through it!

Could wire the batteries in parallel (2 pairs in parallel, then wire the pairs together in series) to keep the voltage at 12v but double the capacity.

Edited by lufbramatt on Thursday 7th September 09:25

Wezaa

Original Poster:

3 posts

86 months

Thursday 7th September 2017
quotequote all
Yeah, I watched loads of YouTube video where it worked, but I guess its was too much for this cheap Chinese thing.
Seems most people upgrade to 18v.

Reason I wanted to up the voltage was to give it more power as its very slow and badly moves on grass. The voltage upgrade worked well. Had way more power and speed, but obviously it killed it.

If worst comes to worst I can simply treat it as having 2 sets of batteries for double the run time.
I just really want to get it working with more power.
Order 2 replacement board. Gonna try it on 18v and see what happens.

Do you have any ideas as to why the board would go pop before the fuse busted?
I think it might be a circuit breaker blade fuse rather than a normal fuse as its in a sealed box.

sgrimshaw

7,405 posts

257 months

Thursday 7th September 2017
quotequote all
A 12V car battery and starter motors will sort the performance out

https://www.youtube.com/watch?v=uYF9AvlkbbM

Wezaa

Original Poster:

3 posts

86 months

Thursday 7th September 2017
quotequote all
It already runs on 12v. It's just 2x 6v connected in series making 12v.
I saw a number of YouTube vids where people have upgraded them to 18v or 24v. I wanted to go to 24v but it killed the controller board.

firestormxtreme

2 posts

202 months

Sunday 21st January 2018
quotequote all
Hi any luck in getting 24v working, I just did the same thing you did and blew a capacitor/resistor but the car still works on the original 2 6v batteries
I want to connect the 24v back up but don’t want to completely brake the car as it still functions

Brasco22

1 posts

65 months

Monday 24th June 2019
quotequote all
My son got this 12v (2 6v) car as a gift and he loves it but it’s so slow. I don’t mind throwing a couple bucks at it to make it faster but also want everything to still work(radio, volt meter and charger) So my plan is to mimic what is has now and upgrading to 2 12v batteries, 1 weelye rx30 24v control box, 2 24v motors, 3 20amp fuses, 24v charger and some 12 g wire. Does this sound right or am I over doing it. If anybody can help would appreciate it. Thanks in advance. Here is a pic of how it came.

sixelaaaa

1 posts

58 months

Saturday 25th January 2020
quotequote all
hello guyz.i have a 12v 2 motor power wheel.i want to upgrade to 24v.everyone suggest weelye rx board.my question is do i have to change the steering wheel motor too or the board has 12v outpout for the motor and the music lights etc?thank you

Jeepride

1 posts

56 months

Wednesday 4th March 2020
quotequote all
This thread is 2 months old, i am hoping to find answers

I brought my son a 12v jeep ride on with dual 9000rpm motors in the rear

recently I have put a second 12 volt battery in to increase the capacity of the battery amps per hour.
keep in mind that this jeep has been rained on!
it lasted months after installing the second battery before the original motors (9000RPM) over heated and shut of the reset fuse, 10 seconds later it turns back on.
so I replaced the 9000rpm motors (because i thought they were at fault) with 12000RPM motors.
it all works sweet and well but the motors get hot and the control box gets warm and it shuts off.
now since it has been rained on, would it be possible for the control box to be corroded and not working properly or is the original control box weelye RX23 12volt not power enough for the 12000rpm motors?

I found heaps of different control boxes RX18, RX23, RX 40 and etc but i cant find specs on them..do i need a better control box or maybe mine is fried from water and just get the same weelye RX23?

cheers guys

Thebrute8732

1 posts

56 months

Tuesday 31st March 2020
quotequote all
Hey! Im planning on doing this conversion (but to 18v using a power tool battery). You can get a voltage converter that outputs 12vs and feed that to the control board. Then use relays triggered by the board's motor output to close the circuit on the 18v feeding the motors. I would keep the fuses (30-40A) and im also going to add an esc so i can back it down if i need. I plan to make a youtube video of the whole process and document so ill try to keep yall informed. But basically, your board needs 12vs. Traditional power wheels dont have boards so the normal 18V or 24V conversions are no big deal. The chinese ones are more advanced and anything more than 12vs will fry the board. Hopefully my experiment works as I have not found anyone else online who has a solution.

SamE30

37 posts

196 months

Wednesday 22nd April 2020
quotequote all

How did you go with this?

I have a Chinese Defender that currently doesn’t work and was planning on trying an 18v Makita Powerpack.

I get the voltage converter to board but don’t quite get the step back up to the motors through the controller


Thebrute8732 said:
Hey! Im planning on doing this conversion (but to 18v using a power tool battery). You can get a voltage converter that outputs 12vs and feed that to the control board. Then use relays triggered by the board's motor output to close the circuit on the 18v feeding the motors. I would keep the fuses (30-40A) and im also going to add an esc so i can back it down if i need. I plan to make a youtube video of the whole process and document so ill try to keep yall informed. But basically, your board needs 12vs. Traditional power wheels dont have boards so the normal 18V or 24V conversions are no big deal. The chinese ones are more advanced and anything more than 12vs will fry the board. Hopefully my experiment works as I have not found anyone else online who has a solution.

Munkeyfeet

468 posts

187 months

Saturday 2nd May 2020
quotequote all
Did anyone find a solution?

We have a Chinese official Range Rover evoque 12v. The gearbox went on one side so I bought the same size motor (550v) but with a higher rpm of 30000 where the originals were 12000. It works well for 30 secs, then cuts out, then works again and so on.

Assuming it’s overloading the battery as it’s now drawing a lot more power in a shorter space. Any recommendations on batteries or can i do a more complicated overhaul that will allow a 18v lipo drill battery upgrade.

AnielG

2 posts

54 months

Sunday 3rd May 2020
quotequote all
Had also a car with 15k rpm, , have bought a complete upgrade kit, motors, cables, receiver, etc. And works perfectly.
Have added another battery of 12v 7Ah, and put it parallel, drove around 1,5 hour without any issues... next to that, removed all the pins from the front hood, and stored another 2 spare batteries, if it runs out.
Kids Power Wheels 12V DIY Harness Transform Complete Set of Remote Control Circuit Board Wires Switch, replacement parts.
https://a.aliexpress.com/_B0LDqU
You have different options, as I initially ordered the wrong one, and couldn’t connect low/high speed and the lights/radio/meter of the car.

Next project is to connect everything on a Arduino board, with ecs, so I can have a RC controller and remote connected with servo for steering, as it now complete right or left

Munkeyfeet

468 posts

187 months

Wednesday 6th May 2020
quotequote all
Thanks for this, great link.

Which would I need for this:

https://www.outdoortoys.co.uk/maxi-range-rover-hse...

It has low/high speeds and also music/lights etc.

AnielG

2 posts

54 months

Sunday 10th May 2020
quotequote all
Would look for the RX37, can handle most power.
Officially they are from Wellye/weelye, look around if you can find them elsewhere, as most of the items take some time to arrive from china.
Ass not all are “official” I would also lookup the pin /connector layouts, so it would match you current cabling, so you only have to replace the receiver.
But here a link
https://a.aliexpress.com/_B0MYKo

Munkeyfeet

468 posts

187 months

Thursday 14th May 2020
quotequote all
Thank you, I have now ordered that part.

How did you sort the batteries out and link them together?

Your help has been excellent so thanks for taking the time to help 🙌

russellkt

1 posts

54 months

Tuesday 19th May 2020
quotequote all
Picking up on a really old post. After way too many hours of searching, I'm so happy to find some like minded people that want to give their kids a little more oomph. Here are the options I've come up with:

1) Go the easy way and get https://eastcoastpowerup.com/ESC_LED_Kits/24v_Best... but they are out of stock and I have not heard back from the Company if they are planning on carrying again.

2) Using the 24v circuit board like the weeleye RX30 which you can now find on amazon but this does not give any control over acceleration and ultimate power output. Based on the 12v the acceleration is way to tame for my and my boy's tastes. Not sure but also a wire/fuse upgrades might be in order. Should allow remote function to still work

3) Like Thebrute8732 mentioned which is a hybrid of the way power wheels and Best Choice products are controlled. Lower voltage going to the circuit board and then use the outputs to trigger two relays fed with the full power like https://www.instructables.com/id/Two-Relay-DC-Moto... or https://www.instructables.com/id/DC-Motor-Controll...

4) Get rid of circuit board all together and just run like power wheels using two relays or a two channel relay module. Same downsides apply which is when going to 24v lots of stress will be placed on components as it's only full power or full brake to the motors.

5) Go all the way in, rewire to feed something like a programmable programmable scooter esc speed controller feeding two relays as mentioned before. Allows you to change acceleration rates and max power. Another benefit is a low voltage cutoff which is crucial for most power tool batteries.

6) Same as 5) except use a motor driver like the cyton 30a smart drive and add mcu of choice to allow all sorts of fun including but not limited to driving wheels in opposite directions(skid steer)

I have not decided what route I'm going to go but will update when I do.

markhaines

103 posts

113 months

Friday 22nd May 2020
quotequote all
Realise this is a really old post but have just stumbled across it trying to achieve same thing - did anyone get it working in the end?

I'm looking to replace the 12v battery in a chinese 12v car with an 18v drill battery *without* blowing up the control board that does the lights / music / remote control.

Cheers

markhaines

103 posts

113 months

Friday 22nd May 2020
quotequote all
...if I went down the relay route would something like this do the job:
https://www.amazon.co.uk/Gebildet-Harness-Color-la...

Neonjer11

2 posts

43 months

Tuesday 27th April 2021
quotequote all
So I know this is an old thread but new info and more explaining of the rx30 has come out over the years. Here a video https://youtu.be/b_Ajbs-E7O0 giving the full layout and operation of the 12v rx19 and rx30 conversion. Keep in mind these can be installed in any rideon if you wanna do the work. Enjoy