6v 550 DC motor Part - Page 1
Forum section: electronics / beginners

author: Pinak
author_rank: Newbie
timestamp: March 21, 2025, 08:17:22 pm
content: Hi Friends. what is this part back on a 6v DC motor of my kids ride on bike (pic attached). i need to replace this with 12v motor now. Do i need to change the motor only or including this circuit? this circuit come along with motor itleslf or i have to buy separately. Thanks in advance

author: amyk
author_rank: Super Contributor
timestamp: March 22, 2025, 07:01:01 am
content: PCB with EMI suppression capacitors.

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 22, 2025, 08:23:30 am
content: If you replace a 6V motor with a 12V motor that have the same power rating, you will halve the power of the bike.

author: CaptDon
author_rank: Super Contributor
timestamp: March 22, 2025, 07:33:26 pm
content: No you won't halve the power, power is power. However you have to look at the specifics. A 15 amp rated 6 volt motor will consume 90 watts of energy but the true output will be diminished by the rated efficiency. A very similar output motor designed for 12 volts would only draw 7.5 amps again consuming 90 watts BUT if the 12 volt motor is connected to 6 volts its output could be half or significantly less than half of what it would produce when run at its design of 12 volts. Is the O.P. converting the bike to 12 volts or just putting in the wrong motor?

author: coppercone2
author_rank: Super Contributor
timestamp: March 22, 2025, 07:47:34 pm
content: it looks like you should put some conformal coating on that PCB. Like brush on from MG chemicals, after you clean it. looks like its getting dirtty

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 22, 2025, 08:06:46 pm
content: Quote from: CaptDon on March 22, 2025, 07:33:26 pmI was trying to simplify at the maximum.Children(that grow and learn fast) +need to replace this with 12v motor(needs more speed by doubling the Vcc) +Do i need to change the motor only or including this circuit(the bike comes with a 6Vcc circuitry... and battery, so is this the only thing that i have to change) +this circuit come along with motor itleslf or i have to buy separately(have i anything else to buy for the upgrade) = have you already changed the battery and the controller ?

author: Pinak
author_rank: Newbie
timestamp: March 23, 2025, 05:08:51 am
content: Quote from: CaptDon on March 22, 2025, 07:33:26 pmcoverting to 12 v

author: Pinak
author_rank: Newbie
timestamp: March 23, 2025, 05:09:55 am
content: Quote from: Coordonnée_chromatique on March 22, 2025, 08:06:46 pmthanks for the reply. yes battery and controller changed for 12v, now need to change the motor. currently using 550 6v dc motor. it will be risky to run 6v motor with 12v (or i should try with 9v using PWM?) Another problem is that current motor pulley is 11 teeth with D shaft which is not availavle arround me

author: MarkT
author_rank: Frequent Contributor
timestamp: March 23, 2025, 09:52:26 am
content: If you reuse that PCB first check that the (black) electrolytic capacitor voltage rating is high enough - if its only 6.3 or 10V it will need to change to 16V rated part. Note electrolytic capacitors are polarized and must be fitten the right way round or will pop. The ceramic discs are likely already 50 or 100V rated so should be fine.