00:00RC motor control need fix? Burn cheap pots constantly.
00:05Found best WH138-1 speed regulator options every RC car builder need.
00:11Tested 5 deals today.
00:13First up, 2-piece pack.
00:16Full resistance options from B5K up to B500K.
00:20Built-in switch clicks solid, cut power clean.
00:24$4 price tag.
00:255-star rating across almost 5,000 sales means 0 dud rate.
00:31Perfect if spare part needed immediately.
00:34Second deal, 5-piece multi-pack.
00:37$1.86 total.
00:40Unbeatable value.
00:42Pack include values up to B1M.
00:45Resistance curve smooth enough for throttle trims.
00:48Almost 5,000 sold, 4.6 rating.
00:52Buy this if running fleet of chassis.
00:54Third pick, 20mm long shaft version.
00:58$2.07 price.
01:01Shaft length fit thick custom 3D printed dashes without rub.
01:054.9 rating with $4,700 sold.
01:09Worth cash if standard dials sit too deep inside chassis.
01:13Fourth option, single unit order.
01:16B5K to B500K spectrum.
01:20$88.
01:22Flawless 5-star rating on over 4,000 orders.
01:25Dial track feel tight, no dead band on throttle curve.
01:29Best option if builder need one solid replacement without box clutter.
01:34Fifth choice, dedicated B500K single unit.
01:38$0.65 flat.
01:40Dirt cheap, solid build, perfect 5-star rating.
01:44High resistance value ideal for fine-tuning auxiliary RC winches or crawler ESC limits.
01:51Pocket change price make no-brainer backup.
01:54Links live in description below.
01:56Smash like, subscribe for more bench tests.
02:00See next build.
