I’m not buying them, I was suspicious from the start, like $10 was too good of a bargain.

That esc was sold in the UK branded as either macgregor or multiplex and when powering it on it acted like a micro switch with no throttle till just over 50% then full throttle. I had bought 10 thinking i was getting a good price though they ended up in the bin as they where unusable. Got them for £60

If this is the esc it appears to be they have absolutely no low end response. I seem to recall their throttle start point is half throttle. I have an unused one I’ll give away for the price of shipping.
They might work fine for FE’s but I can’t use them.

Seen here Greg
On FB marketplace from the Brock township.

Please post photos of the ESC

At just over £5 worth getting a couple at least Ronald.

Selling for $10 cdn

A good solid brushed esc for less than £5 is one of these. I use them in all my brushed boats from scale to speedboats and they are fantastic. 320amp? No they certainly are not though I've pulled 60amp safely out of them on a 3s lipo at full throttle with no air flow and never had an issue. They are waterproof too. Fwd/Rev they are 50/50 and can be programmed on a generic program card. I've had 1 out of maybe 50 fail and that was my own error.

Highly recommended. My second cheap recommendation is IDST 70amp Bluetooth esc. It connects to an app so you can set everything up exactly how you want. It allows you to adjust whilst you sail and gives good telemetry feedback live

Not heard of them but a search shows that the Himark Hm-50 is sold by Howes Models over here in the UK.

How much is he selling them for? Worth a punt if cheap enough.

I prefer to stick with the HobbyWing range of ESCs.

Chris

There is a local person selling these HM- 50 ESC

Has anyone used them? And good or bad reviews?

50A Marine Boat ESC Electric Speed Controller Waterproof!

£37.99
The Brushed 50Amp is a Brushed Speed Control designed specifically for use in RC model boats. This Brushed speed controller has a 50Amp motor limit and has proportional forwards and reverse functions

Marine ESC-50. The hm-50 esc allows remote control of boat electric motors from an RC system. When connected with motor, it is capable of supplying up to 50 amps (forward) or 20a (backwards) of continuous motor current. Its integrated battery eliminator circuit (BEC) powers the receiver from the motor battery, with automatic cutoff of the motor power to preserve receiver power as the battery becomes depleted. It is small and powerful, waterproof, can be used for different type of boat.
working voltage 5-10 cells, 6-12volts