Hangkai Electric Outboard Motor on Rowing Solutions RS CAT16

Testing the 2.2kW Hangkai motor on my 16-foot catamaran on the Sammamish River. Motor was converted from tiller control to remote control. Achieved close to 8mph top speed.

[@MoneyPitBoating]

Man! Your catamaran SLICES through the water...It looks soooo efficient compared to ours! Bravo!

[@bobkart]

Thanks guys! Thinking of adding solar panels at some point.

[@MoneyPitBoating]

@@bobkart Make sure to pay attention to the weight. The flexible panels seem to weigh about 1/4 of the framed ones. Don't make the same mistake we did!

[@bobkart]

@@MoneyPitBoating Good Advice! I'm looking at the Renogy flexible 175Wp model. I think I can get six of them on a canopy. Maybe more if I have 'leaves' that fold out.

[@belekas565]

What a nice cat.wit outbord!!!🤝🇩🇰

[@MCPDaviSound]

Wish you had shown how you modified it for remote control!

[@bobkart]

The steering part is shown in my other Hangkai video. Just a tilt tube and tie rod and tie rod ends, then a steering arm attached to the motor shaft via locking collar. For the throttle and forward/reverse, I removed the tiller arm, then built extension cables between the helm and the motor controller (under the cowl). The tiller arm I attached under the seat. You can see my right hand turning the throttle. For forward/reverse I just connected to a simple on/off switch, switch off is forward and switch on is reverse. Then I mounted the switch just right of the steering wheel.

[@inkbydjtattat8628]

How do you make the extension cables for the throttle controller or where can I order ? ✨

[@DeksZagreb]

@bobkart Hi Bobkart! Did you use a 48V or a 60V battery to reach the top speed of 8 mph? Could you compare the power consumption of the Hangkai and the Epropulsion Navy 6 at the speed of 8 mph? I am offered an used Epropulsion Navy 6 and a brand new Hangkai 2.2kW like yours for an old wooden boat which currently has a 7HP diesel engine. I am worried that the Epropulsion Navy 6 might be slightly too heavy and could consume more electricity since it has an angled prop shaft. What do you think? The boat can't do more than 8mph anyway due to its size and weight, so the Hangkai might be a cheaper coice.

[@bobkart]

Hi Deks, 7.5mph is probably a better representation of the speed with the Hangkai. It was the 48V model, and I'm using 16S LFP cells (51.2V nominal). Hangkai was using 2200W at that speed (full power). ePropulsion Navy 6.0 Evo uses roughly that same amount of power at that same speed, maybe a touch less due to a more efficient propeller design. Not sure what you mean by "angled prop shaft" as the Evo uses direct drive. But maybe the Navy 6 you'd get is the non-Evo model, which does have gears between the motor and prop. The Navy 6 is a better motor overall than the Hangkai, so if price is at all close, I'd go with the Navy. You want to make sure the Navy shaft length is appropriate for your transom. The Hangkai has a really short tiller arm and a very sensitive throttle, and you have to hold the throttle position (or use the Hold button, but then the motor is not safe if you go overboard). I think you're looking at a 40-pound difference between the Hangkai and the Navy 6.

[@DeksZagreb]

@@bobkartThe used ePropulsion 6.0 has a 90 degree shaft gearbox and weighs around 80 lbs, I guess it is an older version. The owner is still considering the price, it will be close to €2k (the $ and € are almost the same). The Hangkai which I could buy new comes in two versions, a 60V version labeled like 10 and a 48V version labeled 8. The guys at Hangkai probably meant these motors should substitute 10HP or 8HP gasoline engines. They are both rated as 2200W BLDC motors but there are no pictures of the internals to see which controller is inside. The motors could be the same with a different controller. The 48V could have a 45A controller limit and the 60V could be 40A, that would be close to 2.2kW but with a slightly higher speed of the 60V prop. They are both around €630 and weigh a bit less than 30 lbs. I have a good 60V 40Ah battery, made with M50LT cells. It is a 2.4kWh pack so it could run for more than an hour on full power or a couple of hours at half power. If it reaches the speed of 8 mph at 60V at full power that would be great. The speed of 7 kts is more than enough. The ePropulsion could reach higher speeds but then again a larger capacity battery would be needed. The Hangkai is definitely lighter and cheaper. I could buy two Hangkai motors and another battery for the price of the ePropuslion motor alone. What bothers me is the realiability. I am buying this for my dad who is already 85 and I am not around all the time when he is at sea. So it would be best to find something he can use with ease and safely. Thanks for a good reply, I really appreciate it.

[@mikenicolosi7699]

this motor above is also only 600usd haswing 3000 usd also watercooled yhey havr8hp 2400usd and 10hp 3100usd plus shipping

[@sharonbraselton4302]

whaler 11 poly ctaft 3 meter

[@mikenicolosi7699]

this is 8hp 2200watts 48v the haswing 10hp is 48v 140amps as the hangkia 8hp is 50 amps ansd haswing 6000watts but 3000usd

[@Rlnds4175]

👌

[@cyrilpicard7724]

Hello. I'm considering buying a 10hp 60V 2200w Hangkai engine to play on the Mediterranean coast. Have you had any issues with your hangkai engine?

[@bobkart]

Hi Cyril, the issues I have with this motor are related to the tiller control. The tiller arm is too short, making small steering correction difficult, and the twist throttle is very sensitive. The throttle movement range is just ninety degrees, making it difficult to make small throttle adjustments. I have about 8 hours and 40 miles on the motor, and in that time it has not had any kind of failure.

[@loucl8226]

Hi Bobkart, What are your thoughts on changing the Rotor blades to get a higher speed and what do you think about a 48v 120ah lithium battery for that motor is it enough? And how long will it last on max speed

[@bobkart]

No doubt a different pitch prop would perform marginally better for most any given boat/loading/conditions. Determining what pitch to change to could be challenging, as likely will be sourcing an alternative prop. Possibly they could be 3D printed? Then there's the idea of a different shape prop (rake, cup, ...). Lots of variables and difficult to test anything but a few combinations. That degree of prop design is usually reserved for experts. I'm certainly not up for it. 48 volts times 120 amp-hours comes to 5,760 watt-hours. Probably more if your nominal voltage is higher than 48 volts (like 51.2 volts for 16S LFP). Dividing 5,760 watt-hours by 2,200 watts yields a bit over 2.6 hours.

[@loucl8226]

@@bobkart thank you Sir perfect answer

[@bleezham]

Hi Bobkart, how has the motor been? I am considering hooking this up to a 48V 20AH Lifep04 battery I have from another project. The trolling motors we have stink for the electric only lakes so if this is anything decent would be great. Other options are expensive torqueedo etc. Hoping this is actually something, if you can take a video with the cowling off I would love to see what motor . Wonder how upgradable this would be with a motor and esc . Thanks!

[@bobkart]

Hi again DBC! I've put about eight hours and fifty miles on this motor. No issues. I no longer use it on 'Electra' (this five-meter cat), as I've moved on to the ePropulsion motor shown in my more recent videos. Assuming 2200W power consumption by this motor, at 50V that would draw 44 amps. So a 20Ah battery will only run for ~25 minutes at full throttle. No doubt you could get hours of running at low power though. On the cowling/motor, keep in mind that the electric motor on this is all below the waterline. Only the motor controller is under the cowl. There's no driveshaft/gears going down the 'leg' of the outboard, instead it's just power cables from the controller to the motor.

[@sharonbraselton4302]

50 mile ràge at 5 tó 8 hoúrß

[@mikenicolosi7699]

sorry above engine 850usd 8hp 2.2kw 50amps max

[@mikenicolosi7699]

please do video of this motor like you did evo 6,0

[@bobkart]

Sorry Mike, the Hangkai motor is off the boat and I'm not likely to put it back on. Maybe there's something specific you're trying to find out about the Hangkai motor that I can help with?

[@danielsv17]

@@bobkartwhat was the top mph you got with this motor?

[@bobkart]

@@danielsv17 Not quite 8mph. I'll call it 7.5mph.

[@phatmeow7764]

hello what is the estimated weight of your 16-foot cat?

[@bobkart]

Roughly 400kg in the configuration shown (~900 pounds). This includes my weight (~100kg).

[@TheJomama91199]

Which size hangkai is this HP rating I mean?

[@bobkart]

This is what they call the 8hp model. 48 volts, 2200 watts. So around 45 amps drawn. But don't expect eight actual horsepower to come out of this thing: 2.2kW is just under 3hp.

[@Paul68Luis]

Can you adjust the motor lower into the water or is that position fixed?

[@bobkart]

In this video I have the motor adjusted all the way down. This motor works like most trolling motors in that the shaft to the propeller can slide/lock in the transom bracket, so height adjustments can be made without changing the transom height. But because my remote steering linkage mounts in part to the transom (the tilt tube), making a height adjustment like that will require the locking collar on the sliding shaft for the steering mechanism to be moved accordingly. Lastly, on this boat I've made alternate transom mounting holes, so the entire transom can be moved to a different height. This more involved approach to motor height adjustment sidesteps the need to relocate the steering mechanism locking collar, as the motor stays in the same position relative to the motor's transom bracket. But obviously this change is only to specific alternate heights, and more involved than just sliding the shaft relative to the transom bracket.

[@Paul68Luis]

@@bobkart thanks for the quick reply. I know your application is pretty specific that it has to be at a certain height for the mechanism to work. Could I drop the top section all the way down if I just hang it off the transom? Thanks again.

[@bobkart]

@@Paul68Luis It should be okay to lower the motor all the way down on the sliding shaft. Only issue would be if that puts it so much below the water surface that you prematurely hit bottom. There are lesser issues like slightly increased drag with more of the motor/shaft in the water, and potentially pushing at the wrong angle due to more leverage of the motor against the boat when it's so far underwater. Best to have it only as low as it needs to be to avoid ventilation. Or maybe I'm not understanding your question.

[@Paul68Luis]

@@bobkart thanks again for the quick reply. Sellers are pretty vague with spec so I was hoping for some input from an end user. Gonna use one for a sailboat. Currently using a haswing 55lb 12 model to get in and out of the harbour so I’m hoping this is going to be an upgrade. :)

[@bobkart]

@@Paul68Luis You should get around 4x the thrust from this versus the Haswing. My most negative point of feedback for this motor is the very sensitive throttle. Good Luck!

[@toddlong8672]

Is that a 2 stroke electric motor

[@bobkart]

Hi Todd, that's an electric outboard motor, not a two-stroke, so no gasoline used. The battery is the blue block of cells in the center of the deck.